Modified isocyanate compositions, their production and uses for polyurethane manufacture
US4448938A · kind A · utility
11Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1979 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Dec 6, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/7671
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Isocyanate compositions derived from diphenylmethane diisocyanate (MDI) which are a mixture of A) the reaction product of MDI with a polyether polyol or amine of molecular weight from 600 to 10,000 and B) a uretonimine modified MDI, the weight ratio of A to B being from 19:1 to 1:1. Also polyurethanes, especially elastomers prepared therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.