High functionality aminoacrylate-acrylate urethanes derived from the addition of a secondary-amine amino alcohol to a multifunctional acrylate
US10577453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2016 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Jun 3, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/343
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aminoacrylate-acrylate urethane comprises at least one urethane function bonded to an aminoacrylate group, this group having a plurality of acrylate groups and being derived from the reaction of a) a hydroxylated aminoacrylate bearing one or more acrylate groups with b) a polyisocyanate. The aminoacrylate a) is produced by the addition of a1) an amino alcohol bearing a hydroxyl group and a secondary amine group to a2) at least one multifunctional acrylate, with a2) being in stoichiometric excess relative to the secondary amine groups of said amino alcohol a1).A method for preparing the urethane acrylate comprises preparing the aminoacrylate a) by a Michael addition reaction. The aminoacrylate-acrylate urethane may be used in curable compositions, more particularly as a synergist, and also to cured finished products from the urethane acrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.