Process to produce polycarbamate, polycarbamate produced thereby and a coating composition comprising the polycarbamate
US10005723B2 · kind B2 · utility
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Key dates
| Filing date | Aug 15, 2014 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Aug 15, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process to prepare polycarbamate comprising adding urea to a polyol in the presence of at least one catalyst selected from the group consisting of compounds having the following formula MmZn; wherein M is a trivalent metal, and Z is an anionic functionality or a functionality capable of forming a covalent bond with M and wherein n times a valence number of Z equals X and m times three equals Y wherein the absolute value of X equals the absolute value of Y is provided. Also provided are a polycarbamate produced according to the process and a coating composition comprising the polycarbamate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.