Composition and process for coating metallic substrates
US5378798A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1992 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Jul 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are polyamides which are the reaction product of (A) an acid component of which 15-99 wt. % comprises one or more saturated or unsaturated dibasic C.sub.28 -C.sub.44 carboxylic acid, 1-50 wt. % comprises one or more saturated or unsaturated monobasic C.sub.14 -C.sub.22 carboxylic acid, another 1-50 wt. % comprises one or more saturated or unsaturated C.sub.2 -C.sub.22 carboxylic acids, and optionally polybasic C.sub.2 -C.sub.14 and tribasic C.sub.42 -C.sub.66 carboxylic acids, and (B) an amine component of which 10-90 wt. % comprises diethylene triamine and/or one or more C.sub.2 -C.sub.6 alkylene diamines, and 10-90 wt. % comprises a poly(oxyalkylene) diamine whose molecular weight is 500-2000. The polyamides are solid at room temperature and fluid at elevated temperature so as to be capable of application as a protective coating to a substrate such as metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.