Transesterification cure of thermosetting latex coatings
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United States of America Patent
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Nov 9, 1993
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app pub date -
Feb 25, 1992
filing date -
Nov 7, 1990
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Abstract
Ambient and heat cured thermosetting emulsion protective coatings are produced by copolymerizing ethylenic monomers including beta-hydroxyl monomers and carboxyl ester monomers to provide a catalyst activated transesterification cure between the hydroxyl groups and the carboxyl ester groups. The transesterification catalyst comprise oxirane functionality in combination with certain classes of nucleophilic compounds. The oxirane functionality can be a catalytic epoxy compound or copolymerized glycidyl monomer or both.
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