Polyurethane dispersions useful for preparing thin wall articles
US5998540A · kind A · utility
16Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Oct 22, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are aqueous polyurethane dispersions prepared from polyester polyols having 0.95 to 1.5 equivalents of carboxylic functionality thereon per equivalent of polyol, the dispersions also containing a nonionic surfactant component wherein the ratio by weight of said carboxylic functionality to said nonionic surfactant component is 1:2.5 to 1:0.5. The dispersions are particularly adapted to the formation of thin wall articles exhibiting greatly improved properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.