Temporary protective coating
US6187849A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Mar 25, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D191/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a temporary, protective dry lubricating coating composition which when deposited and dried on a metallic substrate, is removable by contacting with an aqueous alkaline cleaning solution. The coating composition comprises (a) a wax present in an amount up to 20 weight percent; (b) a base-neutralized, acid functional polymer which is the polymerization reaction product of (i) a polymerizable, ethylenically unsaturated monomer having acid functionality and (ii) at least one polymerizable, ethylenically unsaturated monomer different from (i); and (c) an amine containing an acyclic moiety of from 8 to 30 carbon atoms, the amine being different from the base used to neutralize the acid functional polymer (b). The temporary protective coating is compatible with a wide range of adhesives and sealants used in the assembly of automobiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.