Method for producing polyurethane, epoxy carboxylate composition, polyurethane, and polyurethane resin composition
US11203659B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2017 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | Oct 9, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for producing a polyurethane according to the present invention including: a first step wherein an epoxy carboxylate compound (X) is obtained by reacting (a) an epoxy compound that includes a halogen atom content of 10 ppm by mass or less, while having only two epoxy groups and no hydroxyl group in each molecule, (b) an unsaturated aliphatic monocarboxylic acid that has an ethylenic unsaturated group in each molecule, while having no aromatic ring, and (c) an aromatic monocarboxylic acid that has no ethylenic unsaturated group in each molecule; and a second step wherein the epoxy carboxylate compound (X) obtained in the first step is reacted with a diisocyanate compound (Y).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.