Radiation-curable urethane (meth)acrylates with residual isocyanate groups
US11001731B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Dec 14, 2016 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jul 25, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/8175
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to urethane (meth)acrylates comprising residual isocyanate groups which are obtained from the reaction of: a) at least one di- or poly-isocyanate, and b) at least one hydroxyl-functional (meth)acrylic acid ester of at least one polymer chain which comprises: at least one (meth)acryloyl group, at least one free hydroxyl group and at least one polymer chain, wherein the equivalent ratio of OH groups to NCO groups is 0.05:1 to 0.66:1, a process for preparing thereof and their use in radiation-curable coating composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.