Air curable water-borne urethane-acrylic hybrids
US6239209A · kind A · utility
50Cited by
37References
71Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1999 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Feb 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/92
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The polyurethane-acrylic hybrid interpenetrating polymer network is formed by blending a polyurethane prepolymer having acid or amine salt forming groups, air curable ethylenic unsaturation and terminal isocyanate groups or both terminal isocyanate groups and terminal vinyl groups, with one or more vinyl monomers, inert to isocyanate functionality, dispersing the prepolymer/vinyl monomer blend into water, chain extending the terminal isocyanate groups of the prepolymer with one or more active hydrogen containing compound, and reacting the vinyl monomers by free radical polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.