Siloxane copolymer mixtures useful as foam stabilizers in high resilience polyurethane foam
US4309508A · kind A · utility
14Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Siloxane copolymer mixtures comprising a minor amount of certain high molecular weight (e.g., 4000 to 30,000) siloxane-oxyalkylene copolymers and a major amount of certain low molecular weight (e.g., 300 to 1100) siloxane-oxyalkylene copolymers or cyanoalkylsiloxanes in specifically defined mixture ratios; a process for producing high resilience polyurethane foam utilizing as a foam stabilizer said siloxane copolymer mixtures; and the foams derived therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.