Curable epoxy based compositions having reduced shrinkage during cure
US4739019A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1986 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Dec 8, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A curable composition is composed of PA0 (a) one or more epoxide group containing materials containing at least two epoxide groups per molecule; PA0 (b) a positive amount of an effectively thermoplastic polyester, which does not react into the curable composition and is present as a blended ingredient, which does not exceed 40 percent by weight based on the total weight of the epoxide and polyester components of the composition, said polyester having a weight average molecular weight of from about 1,000 to about 8,000, being non-reactive with the one or more epoxide group containing materials and being insoluble in the one or more epoxide group containing materials of (a); and PA0 (c) a curing agent adapted to cure the one or more epoxide group containing materials of (a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.