Dimensional stabilizing, cell opening additives for polyurethane flexible and rigid foams
US6046249A · kind A · utility
10Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1999 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Jun 23, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for preparing a polyurethane flexible or rigid foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opener characterized in that the cell opener comprises the reaction product of a C1-C20 hydrocarbyl group-containing organic acid anhydride and a substituted phenol which may be alkoxylated or an alkoxylated primary alcohol, optionally reacted in the presence of a tertiary amine urethane catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.