Polyurethane composition
US4085165A · kind A · utility
10Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1974 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Dec 27, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane composition is produced by mixing (a) 100 parts by weight of prepolymer having terminal isocyanate groups and having a number average molecular weight in the range of from 800 to 20,000, (b) 5 - 30 parts by weight of a radical polymerizable vinyl compound, and (c) 0.05 - 1.0 part by weight of a radical initiator, adding (d) a curative selected from the group consisting of polyamine and polyol, and curing the resulting mixture by heating at 70 - 140.degree. C, the equivalent ratio of the active hydrogen of (d) to the isocyanate groups of (a) being in the range of from 0.8 to 1.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.