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US 2011/0034624 A1Published application
Inter-crosslinked polymeric microparticles
Assignee3M Innovative Properties Company
InventorsChi-Ming Tseng, Jingjing Ma, Paul Sedgwick, Peter B. Hall
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Abstract
Adhesives containing inter-crosslinked polymeric microparticles are described. The polymeric microparticles include an acrylic polymer. The present disclosure also relates to water-based emulsions containing polymeric microparticles and a suitable inter-crosslinking agent as well as methods of making adhesives from such water-based emulsions.
Claims22
A water-based emulsion comprising
- (a) polymeric microparticles comprising the reaction product of a mixture of
- (i) an alkyl (meth)acrylate;
- (ii) a vinyl carboxylic acid;
- (iii) a polyalkylene glycol (meth)acrylate functional oligomer;
- (iv) an ionic monomer;
- and
- (v) a multi-functional crosslinking monomer;
- (b) a multi-amine inter-crosslinking agent;
- and
- (c) a neutralizer dispersed in water.
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An adhesive comprising polymeric microparticles inter-crosslinked by a multi-amine inter-crosslinking agent;
- wherein the polymeric microparticles comprise the reaction product of a mixture of
- (i) an alkyl (meth)acrylate;
- (ii) a vinyl carboxylic acid;
- (iii) a polyalkylene glycol (meth)acrylate functional oligomer;
- (iv) an ionic monomer;
- and
- (iv) a multi-functional crosslinking monomer.
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Dependencies are inferred from the claim text.