Aldimines based on 2-methyl-1,5-pentane diamine and their use for the production of polyurea coatings
US5545705A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Dec 14, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to aldimines corresponding to the formula EQU X.sub.1 --[N.dbd.CHCH(R.sub.1)(R.sub.2)].sub.2 wherein PA1 X.sub.1 represents the group obtained by the removal of the amino groups from 2-methyl-1,5-pentane diamine, PA1 R.sub.1 and R.sub.2 may be the same or different and represent optionally substituted hydrocarbon radicals, or R.sub.1 and R.sub.2 together with the .beta.-carbon atom from a cycloaliphatic or heterocyclic ring. The present invention relates to a clear, solvent-containing coating composition which contains PA1 a) an isocyanurate group-containing polyisocyanate which contains less than 5% by weight, based on the weight of component a), of allophanate and uretdione groups and PA1 b) an aldimine corresponding to the formula EQU X.sub.1 --[N.dbd.CHCH(R.sub.1)(R.sub.2)].sub.n wherein X.sub.1, R.sub.1 and R.sub.2 are as previously defined and PA1 c) 10 to 200% by weight, based on the weight of components a), b) and c), of a organic solvent containing only ester groups, wherein components a) and b) are present in an amount sufficient to provide an equivalent ratio of isocyanate groups to aldimine groups of 0.5:1 to 20:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.