Low temperature, compatible mixtures of polyether prepolymers and flow modifiers
US4797226A · kind A · utility
2Cited by
16References
31Claims
0Family size
Inventor
Key dates
| Filing date | May 5, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | May 5, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/205
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There are provided low temperature, storage stable, liquid mixtures of (1) isocyanato-containing prepolymers obtained from the reaction of linear and/or slightly branched polyetherpolyols and a polyisocyanate characterized by a methylene group --CH.sub.2 -- bonded to two benzenoid nuclei, and (2) a non-hydroxyl-containing flow modifier which is compatible with the said prepolymer. Novel liquid mixtures thus prepared exhibit little tendency to crystallize or phase separate when stored for prolonged periods of time, i.e., well below room temperature for several days.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.