Liquid MDI adducts wtih improved freeze stability
US6482913B1 · kind B1 · utility
2Cited by
47References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2000 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Feb 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/725
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to liquid polyisocyanate compositions having improved freeze stability. These liquid polyisocyanate compositions have an NCO group content of 15 to 30%, and comprise (A) an allophanate-modified MDI and having an NCO group content of 16 to 32.5%, (B) a low molecular weight branched aliphatic dihydroxy compound, and (C) an epoxide functional compound which is present in an amount of 0.01 to 1% by weight, based on the combined weight of components (A) and (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.