Heat resistant emulsion polymer dispersion

Heat resistant emulsion polymer dispersion

  • CN 102,066,513 A
  • Filed: 06/08/2009
  • Published: 05/18/2011
  • Est. Priority Date: 06/23/2008
  • Status: Active Application
First Claim
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1. aqueous polymer dispersions, by the polyvinyl alcohol (PVOH) of complete hydrolysis (c) in the presence of, utilize comonomer (b) to make vinyl ester monomers (a) emulsion copolymerization and obtain,Wherein, described vinyl ester monomers (a) comprises first component (a1) t-carboxylic acid esters and second component (a2) vinyl acetate,Wherein, described comonomer (b) comprises:

  • (methyl) acrylamide derivative (b1), general formula are CH 2=CX-CO-NHY, Wherein, X is hydrogen or methyl, and Y is-(CH 2) n-O-Z group, wherein n is the integer in 1 to 6 scope, and Z be hydrogen or alkyl or acyl group with 4 carbon atoms at the most and Be different from (methyl) acrylamide derivative (b2) of (b1), general formula is CH 2=CX-CO-NHY, Wherein, X is hydrogen or methyl, Y be hydrogen or-(CH 2) n-O-Z group, wherein n is the integer in 1 to 6 scope, and Z has the alkyl or an acyl group of 4 carbon atoms at the most, Wherein, the polyvinyl alcohol of described complete hydrolysis (PVOH) (c) comprises the blend of the modification PVOH (X-PVOH) of standard-PVOH (S-PVOH) that the average hydrolysis degree is higher than the complete hydrolysis of 95mol% and the average complete hydrolysis of degree of hydrolysis in being higher than the 95mol% scopeWherein, based on the monomer total amount, described polymeric dispersions comprises the comonomer of 5wt.-% (b) at the most.

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