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Alkyd Resin

  • Polymers
  • CAS 67762-15-6
  • IUPAC: Alkyd resin (linseed oil-modified)

Alkyd Resin (CAS 67762-15-6) appears in 1 of the 1,812 car-care products CarCareTruth tracks (as of June 2026).

Not classified as a GHS health hazard at product use concentrations. Alkyd resins are film-formers in paints and restorers; no systemic toxicity at typical exposure levels. The linseed-oil base contributes the self-ignition risk from applicator disposal (see boiled-linseed-oil ingredient).

Alkyd resins (CAS 67762-15-6) are polyester-based polymeric binders synthesized from polyols, dibasic acids, and fatty acids (commonly linseed, soybean, or tung oil). Linseed oil-modified alkyd resins crosslink through oxidative polymerization (air-drying), forming a durable, flexible film on porous substrates. In trim restorers and penetrating oils, the alkyd binder is the long-duration component — it polymerizes into the surface pores of plastic, rubber, and GRP, providing genuine durability rather than a temporary surface coating.

Alkyds are not classified as GHS health hazards at product concentrations. The primary safety consideration is the self-ignition risk associated with the linseed-oil fatty acid component: applicator rags soaked in alkyd-containing products can self-ignite through exothermic oxidative crosslinking if improperly discarded.

Health & environment profile

VOC
no
Prop 65 listed
no
Asthmagen
no
EPA Safer Choice
no
Aquatic toxicity
no
Biodegradable
no
Bioaccumulative
no
Persistent
no
Ozone depleting
no
Microplastic
no
PFAS
no
Env. score
3/5
Purpose: Film-forming binder in penetrating oil restorers and primers; crosslinks via oxidative polymerization to form a durable flexible film on porous surfaces

Common questions about Alkyd Resin

What is Alkyd Resin used for in car care?
Film-forming binder in penetrating oil restorers and primers; crosslinks via oxidative polymerization to form a durable flexible film on porous surfaces
Is Alkyd Resin a VOC?
No. Alkyd Resin is not classified as a volatile organic compound (VOC).
Is Alkyd Resin on California's Proposition 65 list?
No. Alkyd Resin is not on California's Proposition 65 list.

1 product contain this

Related

Health and environment notes translate the manufacturer Safety Data Sheet, the GHS classification, and authoritative regulatory listings (California Prop 65, EPA). Not medical advice. They describe the ingredient itself; whether a hazard applies to a finished product depends on its concentration and how it's used.