Isocyanate-terminated prepolymer and polyurethane foam prepared therefrom
US5114989A · kind A · utility
35Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1990 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Nov 13, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to an isocyanate-terminated prepolymer prepared from a polyisocyanate comprising 4,4'-methylene diphenyldiisocyanate and polyoxyalkylene polyol wherein the polyol has an average functionality of from about 2 to about 4, a hydroxyl equivalent weight of from about 2200 to 3500 and containing oxyethylene residues in from about 40 to about 68 percent by weight; and the use thereof in the manufacturing of flexible polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.