Paste anhydride curing system for cast epoxy resin bodies and method for making the same
US4657992A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1986 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Feb 18, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The instant invention provides a method for making a cast epoxy resin body and the epoxy formulation therefor wherein the formulation includes a two part system. Component A of the system when mixed with Component B in a ratio of 10 to 40 parts of Component B to 100 parts of Component A undergoes a polymerization reaction to form the solid body. Component A consists essentially of from 40 to 70% by weight epoxy novolac polymer, from 30 to 50% by weight vinyl 3-cyclohexene diepoxide and from 0 to 20% by weight 3,4 epoxy cyclohexylmethyl-3,4-epoxy cyclohexane carboxylate. Component B of the system is a paste anhydride consisting essentially of a mixture of a partially hydrolyzed aryl tetracarboxylic acid dianhydride and an alicylic dicarboxylic anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.