Bio-based plasticizers

01Overview and value chain

Markers: [EC: EU REACH (phthalate substitution, SVHC) / FDA food-contact (21 CFR 178) / EPA TSCA chemical safety | OECD: Industrial biotechnology | Regulator: REACH (EU), FDA (USA), EPA (USA)]

Bio-based plasticizers replace petroleum-derived phthalate esters — DEHP, DBP, DINP, DIDP, the workhorse PVC plasticizers now under EU REACH Substances of Very High Concern (SVHC) authorisation and US EPA TSCA scrutiny for endocrine-disrupting and reproductive-toxicity effects — with renewable molecules whose feedstocks are agricultural (soybean oil, linseed oil, castor oil, starch, cashew nutshell liquid, citrus). Four dominant product families emerged by 2026: epoxidized soybean oil (ESO/ESBO), the volume leader at ~8.4% of China’s plasticizer consumption and the most widely deployed non-phthalate globally, used as a co-plasticizer and heat stabiliser in PVC wire/cable, food-contact packaging, and medical devices; isosorbide diesters (from starch → sorbitol → isosorbide), high-performance specialty plasticizers and monomers for polycarbonates and epoxy resins driven by BPA phase-out regulation; citrate esters (acetyl tributyl citrate ATBC, triethyl citrate TEC), food-contact-safe and used in medical PVC and children’s toys; and mass-balance bio-attributed resins (ISCC PLUS certified), where Arkema’s Pasir Gudang Malaysia acrylic + liquid polyester resins plant (ISCC PLUS certified February 28, 2025) and Lanxess’s sustainable Mesamoll® (bio-mass raw materials) represent the certified-renewable-carbon approach. Arkema’s Rilsan® Clear transparent polyamide unit in Singapore ($20 million investment, operational Q1 2026, tripled global capacity, 45-62% bio-based carbon from castor-oil-derived polyamide 11) and Lanxess’s Vulkanox 4060 (a sustainable alternative to the 6PPD tire antioxidant, REACH registration for volumes exceeding 1,000 tons, commercial production from mid-2026, unveiled at Tire Technology Expo 2026 in Hannover March 3-5) anchor the 2026 bio-attributed additives pipeline. Soybean oil dominates the ESO raw material mix (~58.6% of 2025 market share) and plasticizers lead application consumption (~41.9% of 2025 revenue share), with food and beverage packaging the dominant end-use as ESBO serves as both PVC gasket plasticizer and heat stabiliser in metal can closures.

The key directions of bio-based plasticizers are:

1. Epoxidized soybean oil (ESO/ESBO): the volume leader among non-phthalate plasticizers — produced by epoxidising soybean oil with hydrogen peroxide under acid catalysis (converting double bonds to epoxy groups), used as a co-plasticizer and heat stabiliser in PVC wire/cable, food-contact packaging, medical devices, coatings, synthetic rubber, and biodegradable TPS/PLA composites; approved for food-contact under FDA 21 CFR 178 and EU REACH; major producers Cargill (US), VVF (India), Shandong Longkou (China), and Equilex (Europe food-grade + technical-grade).
2. Isosorbide diesters (from starch → sorbitol → isosorbide): high-performance bio-based monomers and plasticizers driving BPA phase-out in polycarbonates and epoxy resins — Roquette’s POLYSORB® isosorbide (LP, PS, A grades, high-purity bio-based monomer for performance materials) is the dominant feedstock, with Arkema’s castor-oil-derived polyamide 11 (Rilsan® Clear, 45-62% bio-based carbon) and mass-balance resins consuming the downstream volumes.
3. Mass-balance bio-attributed resins (ISCC PLUS certification): Arkema’s ISCC PLUS certified Pasir Gudang Malaysia facility (acrylic + liquid polyester resins, certified February 28, 2025) and global mass balance roadmap — joining prior certifications in the US, Europe, and China — to progressively offer bio-attributed specialty resins and additives (high solids, waterborne, UV/LED/EB, polyester powders) with renewable content; Lanxess’s sustainable Mesamoll® with bio-mass raw materials follows the same certified-renewable-carbon model.
4. Sustainable rubber and tire additives (pelargonic acid, 6PPD alternatives): Lanxess Vulkanox 4060 (N,N’-dicyclohexyl-1,4-phenylenediamine, CCPD) — a sustainable alternative to the 6PPD antioxidant under regulatory pressure in the US and EU; Aflux SD silica processing agent from sustainable raw materials (SVHC-free); Neolone PH Max preservative combining phenoxyethanol with natural pelargonic acid from sunflower oil — both presented at Tire Technology Expo 2026 (Hannover, March 3-5) and in-cosmetics Global 2026 (Paris, April 14-16).

Sectoral value chain

[soybean / castor / starch / cashew nutshell feedstock] ──> [oil extraction / sugar refining]
                                                                          │
                                                              (crude oil / glucose)
                                                                          │
                                                                          ▼
[finished bio-based plasticizer drum / IBC] <─── [compounding & formulation] <─── [purification & distillation] <─── [chemical conversion (epoxidation / esterification / hydrogenation)]

Value chain levels

Cross-cutting technologies of the sector:

• Epoxidised soybean oil epoxidation (Epoxidized Soybean Oil ESBO Epoxidation): the dominant bio-based plasticizer conversion route — soybean oil + hydrogen peroxide under acid catalysis, solvent-free processes now dominant over solvent-based for green-chemistry reasons; epoxy values ≥6.0 for high-quality grades; double-bond-to-epoxide conversion significantly improves thermal stability, oxidation resistance, and PVC compatibility.
• Isosorbide diester from starch/sorbitol (Isosorbide Diester from Starch Sorbitol): Roquette POLYSORB® isosorbide (LP liquid plasticizer grade, PS and A polymer grades) — high-purity bio-based monomer from starch → sorbitol → isosorbide dehydration, used as both a plasticizer and a high-performance monomer for polycarbonates and epoxy resins driving BPA phase-out.
• Mass balance ISCC PLUS bio-attributed resins (Mass Balance ISCC PLUS Bio-Attributed Resins): Arkema’s certified chain-of-custody approach — substituting renewable for fossil naphtha at the cracker feed, then allocating the renewable carbon to specific products via ISCC PLUS mass balance; the Pasir Gudang Malaysia certification (February 2025) joins prior certifications in the US, Europe, and China, enabling Arkema to offer bio-attributed acrylic and liquid polyester resins with up to 100% biobased content.

02US

The US hosts the world’s largest ESO producer (Cargill) and is the regulatory driver of 6PPD and phthalate substitution via EPA TSCA and FDA 21 CFR 178 food-contact approvals.

Cargill ESO leadership, FDA food-contact pathway, EPA phthalate scrutiny

• Cargill (Minneapolis, MN): the largest US producer of epoxidized soybean oil (ESO/ESBO) — the dominant non-phthalate plasticizer globally at ~8.4% of China’s plasticizer consumption and the leading bio-based additive for PVC processing in North America; ESO serves the food-contact packaging sector (FDA 21 CFR 178 approval for can-end gaskets and cling film), wire and cable compounds, medical devices (IV bags, tubing), and biodegradable TPS/PLA composites; Cargill’s vertical integration from soybean crushing to ESO epoxidation anchors the US bio-based plasticizer supply chain.
• FDA 21 CFR 178 food-contact pathway: ESBO is cleared under FDA 21 CFR 178.3740 (plasticizers in polymeric substances) for food-contact PVC gaskets and cling films; acetyl tributyl citrate (ATBC) is cleared under 21 CFR 178.3790 and 21 CFR 175.300 for food-contact and resinous polymeric coatings; both pathways are the regulatory template every new bio-based plasticizer must qualify under to access the food-packaging end-use.
• EPA TSCA phthalate scrutiny: DEHP, DINP, and DBP are on the EPA TSCA Work Plan for Chemical Assessments (medium-high concern for reproductive toxicity); the EPA’s 2024-2026 risk evaluations under amended TSCA (2016 Frank R. Lautenberg Act) drive the substitution demand that ESO and ATBC fill — making FDA food-contact clearance and EPA TSCA risk evaluation the two regulatory levers shaping US bio-based plasticizer adoption.

03CN

China is both the world’s largest ESO producer (Shandong Longkou and the broader Shandong/Jiangsu chemical corridor) and the largest plasticizer consumer market, with ~8.4% of 2020 plasticizer consumption already in epoxy (ESO) grades — the highest non-phthalate share of any major economy.

Shandong Longkou ESO production, China plasticizer market structure, REACH-driven exports

• Shandong Longkou (Shandong province): Chinese ESO producer cluster centred on the Shandong and Jiangsu chemical corridor — product listings (环氧大豆油, CAS 8013-07-8, EINECS 232-391-0) specify epoxy value ≥6.0, light-yellow viscous oil, food-grade and technical-grade specifications; the cluster supplies both the domestic PVC wire/cable and food-packaging market and the EU REACH-driven export demand for non-phthalate plasticizers.
• Jiaao Enprotech (JIAAO ENPROTECH, China): a professional eco-friendly plasticizer manufacturer whose 2026 ESO technical literature describes solvent-free epoxidation processes now dominant over solvent-based methods, with epoxy plasticizers at ~8.4% of China’s 2020 plasticizer consumption (the second-largest category among non-phthalate options) — positioning China as the highest-non-phthalate-share major economy on volume basis.
• REACH-driven export demand: EU REACH SVHC authorisation on DEHP, DBP, and BBP (and the broader phthalate restriction trend) drives Chinese ESO and epoxy plasticizer exports to European PVC compounders and food-packaging manufacturers; the Made in China + REACH-compliant export combination anchors the Shandong/Jiangsu ESO cluster’s 2025-2026 growth trajectory.

04EU

The EU hosts the leading mass-balance bio-attributed resins platform (Arkema, France) and the leading sustainable rubber/tire additives pipeline (Lanxess, Germany), with EU REACH as the primary regulatory driver of phthalate substitution and SVHC authorisation.

Arkema mass balance ISCC PLUS, Lanxess sustainable Mesamoll + Vulkanox 4060

• Arkema (Puteaux, France, Euronext Paris: AKE, 2023 sales €9.5 billion, ~151 production sites, founded 2006): ISCC PLUS mass balance certification for its Pasir Gudang Malaysia acrylic and liquid polyester resins (OFPE) production site (certified February 28, 2025) — joining prior certifications in the US, Europe, and China, and supporting customers across coatings, adhesives for new energies, green mobility, and infrastructure with bio-attributed resins containing up to 100% biobased content; the $20 million Rilsan® Clear transparent polyamide unit in Singapore (operational Q1 2026) tripled global capacity for the flagship Rilsan®Clear G850 and G820 grades containing 45% and 62% bio-based carbon from castor-oil-derived polyamide 11; castor oil platform spans 100% bio-based polyamides, advanced oleochemicals, polyamide additives (60-100% renewable content as rheology modifiers), and instant adhesives (60% bio-based content); Laurent Tellier appointed Chief Operating Officer effective July 1, 2026.
• Lanxess (Cologne, Germany, XETRA:LXS, founded 2004): the sustainable version of Mesamoll® plasticizer (bio-mass raw materials) launched to market, supported by Products Carbon Footprint certificates and renewable-energy/sustainable-raw-material sourcing; Stabaxol® P 110 hydrolysis stabiliser for bio-based polyesters (PLA) improves hydrolytic stability several-fold at lower dosage; Vulkanox 4060 (N,N’-dicyclohexyl-1,4-phenylenediamine, CCPD) — sustainable alternative to the 6PPD tire antioxidant under regulatory pressure — with commercial production from mid-2026 and REACH registration for volumes exceeding 1,000 tons; Aflux SD silica processing agent from sustainable raw materials (SVHC-free, reduces rolling resistance/wear/wet-grip Payne effect); Neolone PH Max preservative combining phenoxyethanol with natural pelargonic acid from sunflower oil (in-cosmetics Global 2026, Paris, April 14-16); Tire Technology Expo 2026 (Hannover, March 3-5, 2026).
• Qualitative context (BASF, Roquette): BASF’s Hexamoll DINCH and biomass-balanced additives portfolio for architectural coatings, plus Ecoflex® biomass balance, represent the broad-chemicals approach to certified renewable carbon; Roquette Frères’ POLYSORB® isosorbide (LP, PS, A grades) is the dominant high-purity bio-based monomer feedstock from starch → sorbitol → isosorbide, consumed downstream by Arkema and other performance-polymer producers — both named as EU industry context rather than tabled because neither surfaced a 2026 plasticizer-specific commercial event on the scale of the Arkema ISCC PLUS or Lanxess Vulkanox 4060 milestones.

05Leading companies and research institutes

06Tech stack and innovations

The bio-based plasticizer stack rests on three orthogonal conversion routes — epoxidation of plant oils, starch-to-isosorbide dehydration, and mass-balance fossil-naphtha substitution — plus the emerging rubber/tire additives substitution (6PPD, pelargonic acid) that extends the bio-based additives platform beyond PVC into the tire industry.

1. Epoxidised soybean oil (ESO/ESBO) epoxidation:
   • The dominant non-phthalate plasticizer conversion route — soybean oil + hydrogen peroxide under acid catalysis, with solvent-free processes now dominant over solvent-based methods for green-chemistry reasons; the C=C double bonds in soybean oil’s triglyceride molecules are converted to epoxy groups, significantly improving thermal stability, oxidation resistance, and PVC compatibility.
   • High-quality grades achieve epoxy values ≥6.0; the resulting ESBO is approved for food-contact PVC (FDA 21 CFR 178.3740, EU 10/2011) and used at typical loadings of 3-10 phr as a co-plasticizer and heat stabiliser alongside primary plasticizers in wire/cable, food-packaging gaskets, medical IV bags, and biodegradable TPS/PLA composites.
2. Isosorbide diester from starch → sorbitol → isosorbide:
   • Roquette’s POLYSORB® isosorbide platform dehydrates sorbitol (itself hydrogenated from starch-derived glucose) to isosorbide — a rigid bicyclic diol that imparts high thermal stability, transparency, and potential biodegradability to polycarbonates, epoxy resins, polyester polyols, and polyurethanes; the LP grade is a liquid plasticizer, the PS and A grades are polymer-grade monomers.
   • The platform’s growth is fundamentally linked to BPA phase-out regulation — isosorbide partially replaces bisphenol A in polycarbonates and epoxy resins for automotive interiors, electronics, packaging, and medical devices, with the IndexBox 2026 market report projecting transition from premium specialty to mainstream category by 2035.
3. Mass balance ISCC PLUS bio-attributed resins:
   • Arkema’s mass balance approach substitutes renewable for fossil feedstock at the cracker inlet, then allocates the renewable carbon to specific products via ISCC PLUS chain-of-custody certification — enabling bio-attributed acrylic and liquid polyester resins with up to 100% biobased content without rebuilding the production infrastructure.
   • The Pasir Gudang Malaysia certification (February 2025) joins prior certifications in the US, Europe, and China, and supports customers across coatings, adhesives for new energies, green mobility, and infrastructure efficiency — the mass balance route is the most scalable path to bio-attributed specialty chemicals because it inherits existing cracker and resin plant capacity rather than requiring greenfield bio-refinery CapEx.

07Value chains and production pipelines

Industrial pipeline of bio-based plasticizers (EU REACH / FDA 21 CFR 178 / EPA TSCA)

┌───────────────────────────┐      ┌───────────────────────────┐
│ 1. Feedstock cultivation  │ ───> │ 2. Oil extraction /       │
│    (soybean, castor,      │      │    sugar refining         │
│    starch, cashew)        │      │                           │
└───────────────────────────┘      └───────────────────────────┘
                                                  │
                                                  ▼
┌───────────────────────────┐      ┌───────────────────────────┐
│ 4. Purification &         │ <─── │ 3. Chemical conversion    │
│    distillation           │      │    (epoxidation /         │
│    (ISCC PLUS mass        │      │    esterification /       │
│    balance)               │      │    hydrogenation)         │
└───────────────────────────┘      └───────────────────────────┘
              │
              ▼
┌───────────────────────────┐      ┌───────────────────────────┐
│ 5. Compounding &          │ ───> │ 6. End-use manufacturing  │
│    formulation            │      │    (PVC, rubber, coatings) │
└───────────────────────────┘      └───────────────────────────┘

Stage 1: Feedstock cultivation & extraction

Soybean oil (the dominant ESO feedstock at ~58.6% of 2025 raw material share) is crushed from soybeans in the US (Cargill’s vertical integration from Minnesota), Brazil, and Argentina; castor oil is extracted from castor beans (Arkema’s polyamide 11 feedstock, with the world’s largest bio-factory in Singapore); starch is wet-milled from maize or wheat (Roquette’s POLYSORB® isosorbide feedstock); cashew nutshell liquid is extracted from cashew processing waste (cardanol plasticizer feedstock).

Stage 2: Oil extraction / sugar refining

Mechanical pressing and solvent extraction yield crude soybean oil and castor oil; starch wet-milling yields glucose syrup, which is hydrogenated to sorbitol before further dehydration to isosorbide; mass-balance routes substitute renewable naphtha (tall oil, used cooking oil, bio-naphtha) for fossil naphtha at the steam cracker inlet — the ISCC PLUS chain-of-custody traces the renewable carbon from feed to product.

Stage 3: Chemical conversion

Epoxidation (soybean oil + H₂O₂ under acid catalysis → ESO, converting C=C double bonds to epoxy groups) — solvent-free processes now dominant; esterification (citric acid + butanol → acetyl tributyl citrate ATBC); hydrogenation and dehydration (glucose → sorbitol → isosorbide via Roquette POLYSORB® process); mass-balance feed substitution at the cracker (Arkema’s Pasir Gudang Malaysia certified February 2025).

Stage 4: Purification & distillation

Refining to food-grade (FDA 21 CFR 178.3740 for ESBO, 21 CFR 178.3790 for ATBC; EU 10/2011 food-contact) or technical-grade specifications; epoxy value ≥6.0 for high-quality ESO; ISCC PLUS chain-of-custody certification for mass-balance products (Arkema’s Pasir Gudang certification joining US/Europe/China certifications); Products Carbon Footprint certificates (Lanxess for Mesamoll® sustainable).

Stage 5: Compounding & formulation

Blending with PVC resin — ESO as co-plasticizer + heat stabiliser at 3-10 phr loading in wire/cable, food-packaging, medical IV bags; isosorbide as a monomer in polycarbonate and epoxy resin polymerisation (driving BPA phase-out); Vulkanox 4060 compounded into tire rubber as 6PPD alternative (commercial production mid-2026); Aflux SD compounded as silica processing agent; mass-balance acrylic resins formulated into coatings and adhesives.

Stage 6: End-use manufacturing & recycling

PVC wire/cable extrusion, food-contact packaging (can-end gaskets, cling film), medical device injection moulding, tire manufacturing (Vulkanox 4060, Aflux SD), coating application (mass-balance resins); end-of-life via mechanical recycling of PVC, Arkema’s Virtucycle® programme for advanced polymer recycling of Rilsan® polyamide 11, or composting of biodegradable TPS/PLA composites containing ESO.