Copolymers, compositions, and articles, and methods for making same
US4280979A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1979 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Sep 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31587
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel polyester diols are described containing aliphatically saturated divalent diacyl moieties and olefinically unsaturated divalent diacyl moieties in a mole ratio of 0.25:1 to 3:1; and divalent dioxy moieties which are linear and/or branched, preferably divalent branched dioxy moieties and divalent linear dioxy moieties in a mole ratio of 0.3:1 to 3:1, the diacyl moieties being bonded through ester linkage to the dioxy moieties in a mole ratio of at least 1.75 dioxy moieties per diacyl moiety, wherein the polyester diol is end-blocked essentially only by alcoholic hydroxyl groups and has an acid number of less than 3. The novel polyester diols are highly useful in the production of polyurethane/vinyl polymer copolymers by reaction with polyisocyanates and polymerizable ethylenically unsaturated monomers. The polyester diols can be used for this purpose by mixing same with the polymerizable ethylenically unsaturated monomer, a catalyst capable of catalyzing polyurethane-forming reactions of polyisocyanates and polyhydroxyl compounds and the resulting compositions can be used in batch or automated molding operations. The novel tough polyurethane/vinyl polymer copolymers, reinforce…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.