Air-drying acrylate lacquer binders
US4146519A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1978 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Feb 9, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Air-drying lacquer binders comprising copolymers of copolymerised units of PA1 20 to 55% by weight of styrene, PA1 5 to 30% by weight of glycidyl (meth)acrylate, and PA1 0 to 50% by weight of at least one (meth)acrylic acid ester having from 1 to 10 C-atoms in the alcohol component, Which copolymers have been esterified to acid numbers of from 0 to 10 with from 22 to 50% by weight of air-drying fatty acids, based on the quantity of copolymer and drying fatty acids and dicarboxylic acid anhydride, and the hydroxyl groups thereby formed have subsequently been reacted with from 0.5 to 3% by weight of dicarboxylic acid anhydride, based on the quantity of copolymer and drying fatty acids and dicarboxylic acid anhydride, characterized in that the binders have acid numbers of from 5 to 15, these final acid numbers being made up of the acid numbers of from 0 to 10 obtained by the esterification with drying fatty acids and the acid numbers of from 1 to 15 obtained from the reaction with the dicarboxylic acid anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.