Polymers containing cyclobutanediol and 2,2-bis(hydroxymethyl)alkylcarboxylic acid
US10526444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Nov 10, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D167/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a free flowing aqueous composition comprising (a) at least one polyester consisting of the residues of 2,2,4,4-tetramethylcyclobutane-1,3-diol; 2,2-bis(hydroxymethyl) dimethylolpropionic acid; and at least one polycarboxylic acid and/or a derivative thereof selected from the group consisting of 1,2-cyclohexanedicarboxylic, 1,3-cyclohexanedicarboxylic, 1,4-cyclohexanedicarboxylic and adipic acid, wherein said polyester has an acid number in the range of 10 to 100 mg KOH/g, a hydroxyl number in the range of 20 to 120 mg KOH/g and a number average molecular weight of 500 to 5000; (b) at least one neutralizing agent; and (c) water. The composition is useful in aqueous coating compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.