Cationic electrodepositable compositions of blocked polyisocyanates and amine-epoxy resins containing diorganotin bis-mercaptides and bis-carboxylates as catalysts
US4981924A · kind A · utility
9Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Sep 11, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D5/4457
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotins of the formula EQU R.sub.2 Sn[X--R.sup.1 --OH].sub.2 where PA1 R is a C.sub.1 -C.sub.8 alkyl or an aryl group, PA1 R.sup.1 is a C.sub.2 -C.sub.9 divalent hydrocarbyl group which may contain a hydroxyl substituent, and PA1 X is a linking group which may be --S-- or --O.sub.2 C--. Also disclosed are cationic electrodepositable (CED) compositions containing such catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.