Process for the continuous production of aqueous polyurethane dispersions and their use as a coating composition or as an adhesive
US4857565A · kind A · utility
21Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Sep 8, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a continuous process for the production of aqueous polyurethane dispersions by continuously mixing solutions of polyurethanes or isocyanate prepolymers dissolved in an organic solvent with water and subsequently continuously removing at least a portion of the solvent using a circulation-type evaporator. The present invention is also directed to the production of coatings or adhesives by applying the aqueous polyurethane dispersions to a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.