Epoxy modified emulsion polymers
First Claim
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1. In an emulsion polymerization process the improvement comprising the steps of:
- providing a blend comprising on a weight basis, between 0.1% and 40% of an epoxy resin polymer, between 30% and 99.8% ethylenically unsaturated monomers, and between 0.1% and 30% oxirane containing ethylenically unsaturated monomers, and polymerizing said blend in an aqueous medium in the presence of polymerization catalysts to copolymerize said ethylenically unsaturated monomers with said oxirane containing ethylenically unsaturated monomers to form an oxirane polymer and provide an in situ emulsified blend of oxirane polymer and said epoxy resin polymer.
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Abstract
Emulsion polymers produced by polymerizing ethylenically unsaturated monomers in an aqueous medium can be substantially improved by incorporating into the monomer mixture a minor amount of blend of epoxy resin and glycidyl acrylate. The epoxy modified emulsion polymers are particularly useful as ambient or low temperature thermosetting latices for film-forming coatings.
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8 Claims
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1. In an emulsion polymerization process the improvement comprising the steps of:
providing a blend comprising on a weight basis, between 0.1% and 40% of an epoxy resin polymer, between 30% and 99.8% ethylenically unsaturated monomers, and between 0.1% and 30% oxirane containing ethylenically unsaturated monomers, and polymerizing said blend in an aqueous medium in the presence of polymerization catalysts to copolymerize said ethylenically unsaturated monomers with said oxirane containing ethylenically unsaturated monomers to form an oxirane polymer and provide an in situ emulsified blend of oxirane polymer and said epoxy resin polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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