Coating compositions comprising isocyanate-functional polymers containing a terminal thioalkyl group
US4222909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1978 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Jun 20, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/062
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Low molecular weight isocyanate-functional acrylic polymers are provided, which contain at least 10% by weight of copolymerized isocyanatoalkyl (meth)acrylate, are substantially free of toxic monomeric isocyanates, and have the following general structure: ##STR1## where R is alkyl or aryl, PA1 R.sub.1 is hydrogen or methyl; PA1 X is COO--A--NCO or a mixture of COO--A--NCO and at least one of phenyl, COOR.sub.2, ##STR2## Cl, H; where A is an alkylene group having 2-6 carbon atoms, and PA2 R.sub.2 is an alkyl group having 1-18 carbon atoms; PA1 and n is 2-400. These polymers can be crosslinked and are useful in a variety of applications such as finishes, pigment surface treatments and dispersants, and rheology control agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.