Polyurethane foams based on mixed itaconic acid polyesters
US4032485A · kind A · utility
4Cited by
10References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1975 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Feb 27, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing polyurethane foams excellent in durability, elasticity and dimensional stability is disclosed. An unsaturated polyester is prepared through the reaction of an unsaturated dicarboxylic acid with a polyhydroxy compound having at least three reactive hydrogen atoms. The polyester is homopolymerized or copolymerized with other vinyl monomers to produce a homopolymer or a homocopolymer. The polymer or the copolymer is used either alone or together with the polyol as a polymer-polyol for the preparation of polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.