Unsaturated polyester-urethane prepolymer and its applications
US8609776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2007 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Jul 17, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ethylenically unsaturated prepolymer comprising an ending X which reacts by condensation being a hydroxyl and/or amine or free isocyanate group and optionally an ending X′ having ethylenic unsaturation, the prepolymer being the reaction product of a first component A comprising a mixture of i) a first ethylenically unsaturated resin carrying specific hydroxyl and/or amine reactive endings, and/or ii) optionally a second resin different from resin i), being an ethylenically unsaturated hydroxylated resin and/or a hydroxylated and/or aminated saturated resin, and/or iii) optionally a third reactive saturated resin, iv) optionally an unsaturated monoalcohol up to 30% in equivalents of the OH+NH2 total, and a second component B comprising a polyisocyanate with a functionality equal to 2 or greater than 2, A and B being in proportions to effectively avoid any gelling by crosslinking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.