Resin, Synthetic Rubber, and Artificial and Synthetic Fibers and Filaments Manufacturing (U.S., NAICS 3252)

A Histometrics rollup primer for public-market and private investors. Figures are reported federal facts with citations; statements about the future are labeled as judgments. This level synthesizes two child industries — resin and synthetic rubber (32521) and man-made fibers (32522).

1. Overview

This is the polymerization band of the chemical industry — the plants that take petrochemical and wood-pulp building blocks and chain small molecules into long ones. Three products come off that same basic process: plastic resin (the pellets that become packaging, pipe, and car parts), synthetic rubber (the elastomers in tires, seals, and roofing), and man-made fiber (the polyester, nylon, and spandex the world wears, drives on, and filters through). NAICS (North American Industry Classification System) code 3252 groups all three because they are made the same way — cracking or dissolving a feedstock, polymerizing it, then pelletizing or spinning it — on the same Gulf Coast, often inside the same integrated companies [1].

For an investor the whole level shares one spine: capital-intensive, continuous-process, deeply cyclical commodity chemistry priced off oil and gas, where the U.S. enjoys a cheap-feedstock edge and China sets the marginal price on commodity grades. Together the level shipped about $129.7 billion of product in 2022 and directly employs about 114,000 people [1].

The honest framing up front: there is no pure "resin-rubber-and-fiber" stock, and no pure play on any one of the three either. Every public route bundles these polymers with other chemicals, fuels, or tires — and many of the real production leaders are private. The distinctive value of looking at the level, rather than a single company, is seeing how the three halves diverge in size, direction, ownership, and even trade posture — which is what Section 2 lays out.

2. What's inside — the two children and how they differ

NAICS 3252 contains exactly two industries [1]:

• 32521 — Resin and Synthetic Rubber Manufacturing: the polymer that becomes plastic (polyethylene, PVC — polyvinyl chloride, polypropylene) plus the elastomers that become tires and seals (SBR — styrene-butadiene rubber, BR — polybutadiene, EPDM — ethylene-propylene-diene monomer, butyl). The commodity-plastics giant of the level, with a small specialty-rubber tail [2].
• 32522 — Artificial and Synthetic Fibers and Filaments Manufacturing: the man-made fibers — polyester, nylon, acrylic, spandex, olefin, plus cellulosics (rayon, acetate, lyocell) — spun through a spinneret and sold on to textile, carpet, auto, and nonwovens makers [3].

They are made from the same petrochemical spine and often by the same firms, but as businesses they pull apart on almost every axis that matters to an investor:

The one-line summary: resin-and-rubber is the big, commodity, publicly-touchable, export-facing bulk of the level in a hard down-cycle; fibers is a small, more-concentrated, import-competing niche that is shrinking and restructuring in private hands. They rhyme on feedstock and cyclicality but part ways on scale, ownership, and which direction the trade winds blow.

One subtle point on ownership overlap. The two children report 1,195 and 107 firms, which would sum to 1,302 — yet the level counts only 1,291 [1]. The gap of ~11 firms exists because a handful of companies make both polymer families and are counted once at the level. The clearest examples are the specialty majors Eastman and Celanese, which run engineered-plastics and fiber (acetate tow) operations. The straddle is now measurable: Eastman's Fibers segment produced $1.05 billion of 2025 sales — about 12% of the company — at a 27% EBIT margin, while the rest of Eastman sits in the resin child [13]. The same integrated firms span resin and fiber, which is exactly why they appear in both children's investable tables below.

3. How big it is

Federal ground-truth figures for the combined level (NAICS 3252), preferred over market-research estimates [1]:

The rollup is unusually clean: the children sum to the level almost exactly on receipts ($122.9B + $6.8B = $129.7B), employment (100,164 + 13,925 = 114,089), and establishments (1,438 + 129 = 1,567) [1][2][3]. These are large, high-wage, continuous-process plants — ~73 workers each at ~$89,000 average pay [1].

Concentration. At the level, the four largest firms held 30.9% of revenue, the top eight 42.0%, the top twenty 58.5%, and the top fifty 74.0% in 2022 [1]. The Herfindahl-Hirschman Index (HHI — a standard concentration gauge where 1,500+ signals moderate concentration) was just 338.8 [1].

That low HHI is doubly misleading, and the reason is instructive at the rollup level. First, as in each child, one NAICS code lumps together many distinct polymer markets (polyethylene, PVC, SBR, polyester, nylon, spandex) that do not compete with each other; individual product markets are dominated by two or three producers and are far more concentrated than the blended number suggests [2][3]. Second — and this is unique to a rollup — combining industries that don't compete at all mechanically lowers measured concentration: the level's HHI of 338.8 sits below both children's (resin/rubber 371.8, fibers 712.4), and the level's CR4 of 30.9% sits below both children's too (32.7% and 44.4%) [1][2][3]. Even folding in the highly concentrated fiber industry pulls the aggregate down, because the arithmetic mixes unrelated markets. The pattern is fractal: one level further down, 32521's HHI of 371.8 likewise sits below both of its children's (resin 424, rubber 473), for the same reason [2]. Only the fiber child escapes the artifact — because 32522 is a single-child pass-through with nothing to blend, its 712.4 is a real industry number [3]. Treat the level HHI as an accounting artifact, not a read on market power.

Undercount caveat. This is not an industry undercounted by tiny or informal operators — the opposite of a restaurant or building-trades census. These are large, capital-intensive, high-wage plants, and federal statistics capture them well. Three distortions run the other way. (1) The $129.7 billion is domestic factory shipments only; U.S. consumption of both plastics and fiber is far larger because enormous volumes arrive embedded in imported yarn, fabric, apparel, tires, and finished goods — global "market size" estimates in the hundreds of billions are not comparable to this figure [3]. (2) A large share of output — especially rubber — is produced captively inside vertically integrated tire complexes (Bridgestone, Michelin) and giant petrochemical sites (ExxonMobil's Baton Rouge, Dow's Freeport), where the polymer unit is embedded in a much larger operation and easy to under-appreciate [2]. (3) Because the biggest producers are vertically integrated, the fiber/polymer boundary is porous — some fiber-related output can be reported under the adjacent resin code [3]. If anything, the federal line understates the strategic footprint of U.S. polymer capacity. A distortion the other direction: the count treats a foreign major's U.S. subsidiary (Formosa, INEOS, SABIC, Arlanxeo, Indorama) as a domestic "firm," overstating how many independent decision-makers actually set capacity [2][3].

On the dollar figure. The $129.7 billion is a 2022 number — a high-price year at the tail of the post-pandemic boom. Resin, rubber, and fiber prices have all since fallen with the down-cycle (Section 8), so current-dollar sales are lower. In physical terms the children have diverged: resin volumes have been roughly flat in 2024–2025 even as prices softened, while the Federal Reserve's industrial-production index for synthetic rubber stood at 80.46 in 2025 on a 2017=100 basis — roughly a fifth below its 2017 baseline, a genuine physical contraction rather than a price effect [2][9].

4. The investable universe — where value concentrates across the children

Value is overwhelmingly concentrated in the resin-and-rubber child (~95% of receipts), and that is also where public access is best. The fiber child is a rounding error on the level's sales and is mostly walled off behind a single small-cap, diversified chemical firms, foreign listings, and private/restructured ownership. No listed company is a pure play on any of the three products.

Resin & synthetic rubber (the ~95% you can mostly buy): the cleanest public routes are diversified U.S. chemical majors [2] —

Indirect resin exposure runs through integrated oil majors (ExxonMobil, NYSE: XOM; Shell, NYSE: SHEL) and the private Chevron Phillips Chemical joint venture (Chevron, NYSE: CVX / Phillips 66, NYSE: PSX) [2]. Synthetic rubber barely registers in any listed U.S. name — and the public route narrowed further in 2025. Goodyear sold its Houston and Beaumont polymer-chemicals plants plus its Akron research site to private-equity firm Gemspring for $650 million in October 2025, retaining only Niagara Falls and Bayport; GT is now primarily a tire bet rather than a rubber bet [8]. To own rubber deliberately you now buy a foreign listing (Zeon, Tokyo: 4205; Saudi Aramco, Riyadh: 2222.SR — parent of Arlanxeo, the world's largest rubber producer) or go private (Kraton/DL Chemical, Lion Elastomers, Gemspring) [2].

Man-made fibers (the ~5% you mostly can't): the ownership map is a different world [3] —

That table carries the level's sharpest lesson about fiber: the listed pure-play loses money while the fiber business embedded in a diversified major earns 27% margins [12][13]. In this level, scale, integration, and a defensible niche — not fiber exposure as such — are what pay.

Bottom line for a stock picker: the investable center of gravity of this entire level is the diversified U.S. chemical major — you are buying the resin cycle, with rubber as a tiny specialty tail and fiber (for Eastman and Celanese) as a small segment inside the same companies. For a private investor, the more targeted opportunities across all three products sit in the tiers around the polymer makers — compounders, recyclers, elastomer specialists, and NGL (natural-gas-liquids) feedstock midstream — and, uniquely for fiber, in distressed and restructured debt, since the recent Chapter 11 filings converted lenders into owners of real, cash-generating plants.

5. How the money works

All three products run the identical commodity-petrochemical playbook: spread and utilization.

Margin is a spread. A producer earns the gap between the selling price of the polymer and the cost of the monomer feedstock going in, minus energy and conversion cost — watched the way a refiner watches the crack spread. LyondellBasell puts the magnitude plainly: feedstock and energy were approximately 70% of its total cost of sales over the three years through 2025 [5]. The feedstock chains differ by product (natural gas liquids → ethylene/propylene → resin; butadiene + styrene → rubber; paraxylene, benzene, ammonia, acrylonitrile, or wood pulp → fiber), but the logic is the same, and the firms that own the whole chain — the "integrated" players — capture margin at each step and ride out downturns far better than a standalone converter buying monomer on the open market [2][3].

Utilization is the swing variable. These are fixed-cost-heavy plants; profit depends on running them near full. New capacity arrives in giant, lumpy, multibillion-dollar increments, so the industry regularly overshoots demand and then spends years digesting the excess — the source of its deep cyclicality [2][3].

The shared U.S. feedstock edge is real but not uniform. Cheap shale ethane has historically put U.S. crackers $200–300 per tonne of ethylene below naphtha-based rivals in Europe and Asia, which is pure upside for resin [2]. But butadiene — the backbone monomer of tire rubber — is a co-product of cracking, and light-ethane cracking yields far less of it than naphtha: EIA process assumptions show 0.0178 metric tons of butadiene per metric ton of ethane feedstock versus 0.0476 for naphtha [10]. So the very feedstock shift that advantages U.S. resin tightens butadiene supply for U.S. rubber makers. When this level's "cheap-feedstock advantage" is cited as a shared strength, that caveat belongs with it.

Specialty beats commodity — across all three. Commodity grades (bulk polyethylene, tire SBR, staple polyester) are low-margin and exposed to Asian imports; specialty grades (engineered plastics; butyl/EPDM/HNBR rubber; recycled content, high-tenacity industrial yarns, branded performance fibers) carry higher margins and stickier customers. The durable margin in every child lives in the specialty tier — which is why the survivors in all three are retreating from commodity volume toward defensible niches [2][3].

But the trade posture splits the children — sharply. Resin is a net exporter: the U.S. makes far more polyethylene than it consumes (~40% of output is exported), so producer earnings ride global demand, foreign rivals' costs, and tariff retaliation [2]. Fiber is the mirror image — a net importer whose domestic staple producers survive largely because antidumping duties hold back subsidized imports [3]. One child's earnings depend on keeping export markets open; the other's depend on keeping imports out. That is the sharpest economic contrast at the level, and it means the same trade shock (a tariff war) can help one child and hurt the other.

How deep is the current trough? Deep in both children, but it shows up differently. On the resin side, Dow's Packaging & Specialty Plastics segment earned roughly a 4.1% EBIT margin in 2025, down from about 10.9% in 2024 [4]; LyondellBasell's Olefins & Polyolefins–Americas segment earned about an 11.7% EBITDA margin, down from about 21.2% [5]; and ExxonMobil described 2025 chemical margins as "deeply bottom-of-cycle," with Chemical Products earnings falling from $2.6 billion in 2024 to $800 million in 2025 [6]. Westlake reported U.S. natural-gas and ethane prices up 51% and 33% respectively in 2025 while its Performance and Essential Materials selling prices fell 4% and volumes fell 6% — rising inputs into falling realizations, the worst configuration for a spread business [7]. On the fiber side the same trough reads as segment shrinkage and solvency stress rather than compressed commodity spreads: Eastman's Fibers EBIT fell 38% in 2025 on destocking even in the defensible acetate-tow niche [13], and Unifi ran a negative gross margin in its Americas segment [12].

6. What drives demand

The children answer to different masters, which is why they don't move in lockstep — but both ultimately ride the auto, construction, and consumer cycles [2][3]:

Resin & rubber:

• Packaging — the largest resin end market (~35–41%) — food/beverage containers, film, bottles. Tied to consumer staples, so relatively defensive [2].
• Building & construction — ~18–22% — PVC pipe, siding, insulation — cyclical and rate-sensitive [2].
• Automotive — lightweighting plastics (~8–10% of resin) and tires; tires consume ~70% of SBR/BR volume and tire-making absorbs ~45% of all synthetic rubber, split between steadier replacement demand and cyclical original-equipment demand. Downstream softness transmits upstream quickly: Goodyear's worldwide tire volume fell 4.7% in 2025, including a 6.3% decline in replacement units [8]. The EV (electric-vehicle) transition is a probable net tailwind for replacement rubber, as heavier, higher-torque EVs wear tires faster (judgment) [2].

Fibers:

• Apparel & home textiles — the largest fiber end market; fashion-cyclical [3].
• Nonwovens / filtration / hygiene — wipes, diapers, medical fabrics — structurally growing and less fashion-cyclical [3].
• Automotive & industrial — seatbelts, airbags, tire cord, ropes, geotextiles, composites [3].

The common thread is that both children face slow developed-market growth, Chinese overcapacity on commodity grades, and substitution pressure — resin from recycled content and packaging-reduction rules, rubber from natural, recycled, and bio-based elastomers, fiber from recycled and bio-based alternatives [2][3]. Polyester alone is ~57% of all fiber made worldwide, and China controls well over 60% of production, so where the marginal tonne is made shapes prices for every U.S. producer [3].

7. Regulation

All plants in this level are petrochemical facilities under the Clean Air Act, Clean Water Act, and Toxic Substances Control Act (TSCA), and share the EPA's (Environmental Protection Agency) tightening air-toxics rules. The 2024 Hazardous Organic NESHAP ("HON") update is the shared spine: it covers roughly 220 facilities, is expected to cut more than 6,200 tons of toxic air emissions annually, and mandates fenceline monitoring for six toxics including 1,3-butadiene, benzene, and ethylene oxide, with sharp emission cuts effective July 15, 2024 [2][11]. Compliance is not costless: Dow has flagged an ethylene-oxide unit it may close by late 2026 [2]. From there the end-of-life front splits by product:

• Resin faces materials / plastic-waste policy — the faster-moving front. Extended Producer Responsibility (EPR) laws shift packaging-waste cost onto companies that put plastic on the market (Colorado's program started January 2026); a UN Global Plastics Treaty is under negotiation; and PFAS (per- and polyfluoroalkyl substances) restrictions plus recycled-content mandates tilt economics toward recycled resin and pressure virgin-plastic volumes [2].
• Rubber faces tire-chemistry scrutiny — notably 6PPD and its transformation product 6PPD-quinone (linked to fish kills), drawing regulatory attention in California and elsewhere, which could reshape tire-compound demand over time [2].
• Fiber's defining lever is trade remedies — antidumping (AD) and countervailing duty (CVD) orders on fine-denier polyester staple from China, India, Korea, and Taiwan (in force since 2018, continued in 2024) are what keep domestic staple producers alive. The rising risk is microplastics/microfiber regulation (the proposed federal Fighting Fibers Act of 2025, state shedding rules, a 2025 EPA petition) plus PFAS limits on textile finishes [3].

8. Consolidation

All three products are in the same late-cycle phase — rationalize weak, high-cost (mostly Western) capacity, concentrate around advantaged feedstock and specialty technology, and wait for the cycle to turn — but the register differs by child [2][3]:

Resin & rubber (managing a deep cyclical downturn) [2]:

• 2025 was the first year since 2010 the U.S. added no new ethylene capacity; the drought breaks in 2026 with the Chevron Phillips/QatarEnergy Golden Triangle project in Texas.
• Dow cut its dividend 50% in July 2025 (~$990M/yr saved), launched a $1B cost program, moved to cut ~4,500 jobs, and is shutting higher-cost European assets.
• LyondellBasell agreed to sell four European plants while buying the rest of Sasol's Louisiana ethane cracker (~$2B) — trimming Europe, doubling down on advantaged U.S. capacity.
• Westlake closed a ~1.0-billion-lb/yr PVC plant in Mississippi in December 2025 [7].
• On the rubber side, Goodyear sold most of its polymer-chemicals business to Gemspring for $650 million in October 2025, exiting merchant rubber to focus on tires [8]; Trinseo had already exited SBR/BR entirely (sold to Synthos, 2021); Kraton was taken private by DL Chemical (~$2.5B, 2022); and Lion Elastomers is winding down butadiene-based rubber at Orange, Texas.

Fibers (an outright restructuring wave) [3]:

• Global overcapacity (especially China) crushed commodity margins and drove nylon maker Ascend through Chapter 11 (filed April 2025, emerged December 2025) and spandex maker The Lycra Company into a prepackaged Chapter 11 to shed ~$1.2B of debt.
• The pressure has reached the specialty end too: Eastman's Fibers EBIT fell 38% in 2025 on destocking [13], and Celanese announced the intended closure of its Lanaken acetate-tow plant, citing declining demand and regulatory uncertainty [14] — notable because Celanese and Eastman are precisely the firms that straddle both children.
• Survivors are retreating from commodity grades toward recycled, specialty, and integrated positions.

Same story, three registers: resin is loudly cutting costs and dividends in a cyclical trough; rubber is quietly shedding commodity capacity into private-equity hands and moving upmarket; fiber is running it through bankruptcy court and closing plants. In all three, expect continued asset sales, plant closures, and — for fiber especially — lender-driven ownership changes rather than large public-company mergers.

9. Risks

The children share most risks, weighted differently:

• Cyclicality and overcapacity — the defining risk for all three. Global additions (China, Middle East) depress prices and utilization for years; earnings swing violently, as the 2025 segment margins in Section 5 show [2][3][4][5][6].
• Feedstock and energy prices — the U.S. edge depends on cheap ethane/gas, and it can flip fast: Westlake reported U.S. gas and ethane prices up 51% and 33% in 2025 even as its selling prices fell [7]. A narrowing spread versus oil-linked rivals erodes resin and fiber margins; for rubber, the same light-feed shift can starve butadiene supply [2][3][10].
• Chinese and Middle Eastern competition — new integrated capacity floods commodity grades in every child; the West is ceding the commodity end [2][3].
• Trade-policy whiplash — but pointing opposite ways. With ~40% of polyethylene exported, tariffs and retaliation hit resin directly; fiber, by contrast, depends on import duties staying in place, and would be hurt if AD/CVD orders lapsed or input costs rose [2][3].
• Regulation, liability, and substitution — EPR, a possible plastics treaty, and recycled-content rules threaten virgin-resin volumes; 6PPD pressures rubber; microplastics/PFAS rules and recycled alternatives pressure fiber; and HON compliance, pollution litigation, and flammable-monomer incidents carry cost and reputational risk across the level [2][3][11].
• Leverage and solvency in the trough — several producers entered the down-cycle over-indebted; Dow's 2025 dividend cut and the Ascend/Lycra Chapter 11s show even sizable producers feel real strain in a deep, extended downturn [2][3][4].
• Capital intensity and stranding — new plants cost billions and last decades; a wrong demand or policy bet is expensive to unwind [2][3].

10. How to invest and the outlook

Public routes. The practical way to own this level is the diversified U.S. chemical major — Dow (DOW), LyondellBasell (LYB), Westlake (WLK) for commodity-resin and feedstock exposure, Celanese (CE) and Eastman (EMN) for a specialty tilt (and, in Eastman's case, the level's only meaningful listed fiber exposure, at $1.05B of Fibers sales and a 27% EBIT margin in 2025 [13]). These trade as the cycle: cheap-looking valuations and high dividend yields near the trough often coincide with falling earnings and — as Dow showed in 2025 — dividends that can be cut. Integrated-oil exposure (XOM, SHEL, CVX/PSX) is more diluted but steadier. Synthetic rubber and man-made fiber barely register in these names; after Goodyear's October 2025 sale of most of its polymer-chemicals plants to Gemspring, a tire stock is now even less of a rubber play [8], so owning rubber deliberately means a foreign listing (Zeon 4205, Kumho, Saudi Aramco 2222.SR — parent of Arlanxeo) or private ownership. For a fiber tilt the purest listed name remains small-cap Unifi (UFI) — a volatile, execution-dependent story currently running at a loss [12] — with scale only available through foreign listings (Indorama, Toray, Hyosung TNC, Lenzing, Nan Ya/Formosa). NGL-midstream companies are a related, lower-beta way to play the shared U.S. shale-feedstock advantage across the whole level.

Private routes. Building new world-scale capacity is a project-finance and strategic-JV game for majors and foreign nationals — not accessible to most. The realistic private plays sit around the polymer core in all three products: plastics compounders and formulators, recycling and advanced-recycling ventures (favored by tightening EPR), PE-backed elastomer specialists (Lion Elastomers, Gemspring's former Goodyear assets), equipment and logistics serving the Gulf Coast export machine, and — uniquely for fiber — distressed and restructured debt, since the Ascend and Lycra Chapter 11s converted lenders into owners of real, cash-generating assets. Notably, the actual pure-play rubber and fiber assets mostly change hands privately, as the Kraton, Trinseo, Goodyear/Gemspring, Invista, Ascend, and Lycra transactions show.

Near-term outlook (judgment). The level is working through the bottom of a hard cycle across all three products, and the 2025 numbers make the trough concrete rather than rhetorical: single-digit segment margins in resin, chemical earnings down two-thirds at ExxonMobil, rubber output roughly a fifth below its 2017 base, and fiber restructuring in court [4][6][9][13]. Expect continued margin pressure, more high-cost (largely European and Asian) closures, and consolidation around cheap U.S. feedstock; the 2026 startup of new Gulf Coast resin capacity adds supply into a still-soft market, which could delay a pricing recovery [2]. The durable bull case is structural and shared: the U.S. retains a low-cost feedstock position, packaging, replacement-tire, and hygiene/nonwovens demand are relatively defensive, and rationalization eventually tightens supply — so the survivors with the best-integrated, lowest-cost U.S. assets should earn strong returns when the cycle turns. The durable bear case is that Chinese self-sufficiency, Middle East mega-projects, and materials/textile regulation structurally cap both volumes and the U.S. cost edge. Which force dominates is the central judgment call — and the answer may differ by child: resin's fate hinges on the global commodity-plastics glut and export access; rubber's on whether specialty technology and captive tire integration can defend margin as commodity grades leave the West; fiber's on whether trade protection and a shift to recycled and specialty grades can stabilize a shrinking, restructuring domestic base.

---

Sources

1. Histometrics ingested federal ground-truth dataset for NAICS 3252 and its children 32521/32522 — U.S. Census Bureau, 2022 Economic Census (receipts $129.68B, firm count 1,291, concentration ratios CR4/CR8/CR20/CR50, HHI 338.8) and 2023 County Business Patterns (employment 114,089, establishments 1,567, annual payroll $10.20B).
2. Histometrics primer, Resin and Synthetic Rubber Manufacturing (NAICS 32521) — synthesizing 2022 Economic Census / 2023 County Business Patterns; sub-industry splits for 325211 plastics resin and 325212 synthetic rubber; American Chemistry Council resin statistics; Dow, LyondellBasell, Westlake, ExxonMobil, Eastman, Celanese, Trinseo, Goodyear company filings; EIA ethane and butadiene-yield data; Chemical & Engineering News; Global Plastic Laws (EPR / UN treaty / PFAS); Rubber News / Tire Business; U.S. EPA HON rule (2024); OSHA 1,3-butadiene standard; BLS rubber price analysis; Zeon, Kraton (DL Chemical), Arlanxeo (Saudi Aramco), Lion Elastomers, Gemspring corporate sources.
3. Histometrics primer, Artificial and Synthetic Fibers and Filaments Manufacturing (NAICS 32522) — a single-child pass-through to 325220; synthesizing 2022 Economic Census / 2023 County Business Patterns; Chemical Market Analytics (OPIS) and Market Research Future (global polyester / China capacity); Unifi, Eastman, and Celanese Form 10-K filings; U.S. International Trade Commission and Federal Register (fine-denier polyester staple AD/CVD orders, 2018/2024); Chemical & Engineering News and Sourcing Journal (Ascend and The Lycra Company Chapter 11s, 2025–2026); Jenner & Block / Beyond Plastics (microfiber regulation, Fighting Fibers Act of 2025, EPA microplastics petition).
4. Dow Inc. — Form 10-K FY2025 (Packaging & Specialty Plastics segment results; 2025 dividend cut, cost-savings and job-reduction program). https://www.sec.gov/Archives/edgar/data/1751788/000175178826000018/dow-20251231.htm
5. LyondellBasell Industries N.V. — Form 10-K FY2025 (feedstock and energy ~70% of cost of sales; Olefins & Polyolefins–Americas segment results). https://www.sec.gov/Archives/edgar/data/1489393/000148939326000012/lyb-20251231.htm
6. ExxonMobil Corporation — Form 10-K FY2025 (Chemical Products segment earnings $2.6B → $800M; "deeply bottom-of-cycle" commentary). https://www.sec.gov/Archives/edgar/data/34088/000003408826000045/xom-20251231.htm
7. Westlake Corporation — Form 10-K FY2025 (2025 natural-gas and ethane cost increases; Performance and Essential Materials price and volume changes; Aberdeen, Mississippi PVC plant closure). https://www.sec.gov/Archives/edgar/data/1262823/000126282326000016/wlk-20251231.htm
8. Goodyear — sale of polymer-chemicals business to Gemspring ($650M, October 2025), retained facilities, and 2025 tire volume decline — company announcement and Form 10-K FY2025. https://news.goodyear.com/2025-05-22-Goodyear-Announces-Sale-of-Chemical-Business; https://www.sec.gov/Archives/edgar/data/42582/000162828026006708/gt-20251231.htm
9. Federal Reserve Bank of St. Louis, Industrial Production: Synthetic Rubber (NAICS 325212), FRED Series IPG325212A, 2025 (production index 2017=100). https://fred.stlouisfed.org/series/IPG325212A
10. U.S. Energy Information Administration, Industrial Demand Module Documentation, 2022 (butadiene yields by feedstock: 0.0178 mt/mt ethane vs 0.0476 naphtha). https://www.eia.gov/outlooks/aeo/nems/documentation/industrial/pdf/IDM_2022.pdf
11. U.S. Environmental Protection Agency, Final Rule Announcement: Stronger Clean-Air Standards for Chemical Plants (HON rule; ~220 facilities, 6,200+ tons of emissions reduction, fenceline monitoring). 2024. https://www.epa.gov/newsreleases/biden-harris-administration-finalizes-stronger-clean-air-standards-chemical-plants
12. Unifi, Inc. — Form 10-K, fiscal year 2025 (net sales ~$560M; Americas segment negative 5.8% gross margin; Repreve). https://www.sec.gov/Archives/edgar/data/100726/000095017025111331/ufi-20250629.htm
13. Eastman Chemical Company — Form 10-K FY2025 (Fibers segment sales $1.05B, EBIT $283M / 27% margin, EBIT down 38%). https://www.sec.gov/Archives/edgar/data/915389/000091538926000013/emn-20251231.htm
14. Celanese Corporation — Lanaken acetate-tow plant closure announcement (declining demand and regulatory uncertainty). 2025. https://www.sec.gov/Archives/edgar/data/1306830/000130683025000203/a202510xxex991projectwhite.htm