Hydrophilic resin containing oxazolidone rings and coating composition containing same
US5276072A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Dec 4, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D5/4449
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Oxazolidone ring-containing epoxy resins (a) produced by the reaction between a diglycidyl ether or ester and an organic diisocyanate are reacted with (b) a first active hydrogen compound such as mono- or diols, mono- or dicarboxylic acids in less than a stoichiometric amount in terms of the active hydrogen atom relative to the epoxy group, and then with (c) a second active hydrogen compound such as amines or sulfide-acid mixtures or polycarboxylic acids in a stoichiometric amount relative to the remaining epoxy group. The resulting hydrophilic modified resin has an oxazolidone ring-containing backbone terminated with an ionizable group. A water-borne paints are formulated from the hydrophilic modified resin by dispersing in an aqueous medium containing a crosslinker and a neutralizing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.