Phase stabilized polyester molding material
US4622354A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Oct 22, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to the discovery and development of a novel class of phase stabilization additives for thermoset polyester resins. The use of these materials imparts improved glass read out and superior homogeneity when compared to art-disclosed systems thus producing an overall improved Class A quality thermoset polyester resin surface finish for a variety of products. The phase-stabilizing agents or additives of the present invention comprise a select group of compounds from three classes: fatty acids, dimer acids, and polyester polyols. More specifically, the phase-stabilizing agents of the present invention comprises a compound selected from the group consisting of: PA1 (i) a saturated or unsaturated C.sub.5 to C.sub.28 fatty acid; PA1 (ii) a C.sub.20 to C.sub.54 dimer acid or trimer acid; or PA1 (iii) a polyester polyol having an average molecular weight of about 200 to about 6,500.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.