Self-emulsifiable isocyanate-terminated prepolymer, and aqueous coating composition and aqueous adhesive composition employing the self-emulsifiable isocyanate-terminated prepolymer
US5373050A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Nov 24, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2170/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a self-emulsifiable isocyanate-terminated prepolymer, having an average NCO functionality of from 2.0 to 3.5, which is prepared from: (a) a polyisocyanate mainly composed of at least one of aliphatic polyisocyanates, alicyclic polyisocyanates, and aromatic polyisocyanates, (b-1) a hydrophilic surfactant having at least one active hydrogen group capable of reacting with an isocyanate group, and (b-2) an aliphatic compound of 8 or more carbons, and/or a fatty acid ester in which the total of the carbons of a starting fatty acid and a starting hydroxyl-group-having compound is 8 or more, the aliphatic compound and the fatty acid ester having at least one active hydrogen group capable of reacting with the isocyanate group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.