POLYMER LATEX FOR USE IN CONSTRUCTION APPLICATIONS
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United States of America Patent
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Issued Date -
Dec 22, 2022
app pub date -
Dec 7, 2020
filing date -
Dec 7, 2020
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Abstract
The present invention relates to a polymer latex obtained by aqueous emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising
- a) vinyl aromatic compounds;b) conjugated dienes;c) hydroxyalkyl esters of ethylenically unsaturated acids in an amount of 2 to 10 wt.-% based on the total weight of monomers; andd) ethylenically unsaturated carboxylic acids or salts thereof in an amount of 0 to 0.15 wt.-% based on the total weight of monomers;wherein the weight ratio of vinyl aromatic compounds to conjugated dienes is at least 1.3:1 and the polymer latex comprises 2 to 10 wt.-% based on total weight of monomers of non-ionic surfactants having an HLB of 17 to 19 and to constructions materials, preferably cementitious compositions comprising same.
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