Vinyl polymer polyols made using epoxy resin-modified polyols
US4539378A · kind A · utility
12Cited by
15References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1984 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Sep 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/914
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vinyl polymer polyols made by polymerizing in situ via a free-radical mechanism one or more vinyl monomers in an epoxy resin-modified polyol are described. Preferably, styrene and acrylonitrile are copolymerized in a polyol made by adding epoxy resin to the alkoxylation of a polyol initiator having 3 to 4 hydroxyl groups. The vinyl polymer polyols of this invention give flexible polyurethane foams with greater load-bearing properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.