- ▸ Coatings: Chemical- and heat-resistant coatings and linings.
- ▸ Adhesives: High-temperature adhesive formulations.
- ▸ Electrical laminates: Resin for electrical laminates.
- ▸ Composites: Binder for high-performance composites.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Epoxy phenol novolac resin (CAS 9003-36-5), a multifunctional epoxy resin derived from a phenol-formaldehyde novolac backbone. Its higher epoxy functionality yields densely crosslinked networks used in chemical- and heat-resistant coatings, adhesives, electrical laminates, and composites.
Frequently Asked Questions
What is epoxy novolac resin?
Epoxy novolac resin (EPN, CAS 9003-36-5) is a multifunctional epoxy resin derived from a phenol-formaldehyde novolac backbone. Its higher epoxy functionality yields densely crosslinked cured networks. It is used in chemical- and heat-resistant coatings, adhesives, electrical laminates, and composites.
What is the difference between epoxy and epoxy novolac?
Standard bisphenol-A epoxies are typically difunctional, while epoxy novolac resins carry multiple epoxide groups per molecule from their novolac backbone. The higher functionality gives epoxy novolac denser crosslinking and improved chemical and heat resistance after cure. Select based on the chemical/thermal performance your application requires.
How is novolac resin made?
A phenolic novolac is made by reacting phenol with formaldehyde under acidic conditions at a formaldehyde-deficient ratio, producing a multi-ring phenolic backbone; that novolac is then epoxidized with epichlorohydrin to make epoxy novolac resin. The result is the multifunctional EPN supplied here. Epoxy equivalent weight is a key specification on the CoA.
What grade and identity does RawSource supply?
We supply epoxy phenol novolac resin referenced to CAS 9003-36-5 under HS 3907.30 (epoxide resins), with a lot-specific datasheet reporting epoxy equivalent weight, viscosity, and functionality. Cite the CAS on RFQs to ensure correct material. Request the current data sheet for the grade quoted.
How is epoxy novolac resin supplied in bulk?
RawSource supplies EPN to coatings, adhesive, laminate, and composite manufacturers in drums, IBC totes, and bulk formats. Packaging, MOQ, and specification are confirmed at quotation against the datasheet; pricing is by quote, not list. Submit a bulk RFQ with your required volume and target epoxy equivalent weight.