Highly stable aqueous solution of partially saponified vinyl ester resin
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United States of America Patent
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Jun 3, 2003
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N/A
app pub date -
Sep 29, 1999
filing date -
Apr 1, 1997
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Abstract
An aqueous solution of partially hydrolyzed vinyl ester resin having an excellent stability and useful particularly as a secondary agent for suspension polymerization of vinyl compounds, wherein the partially hydrolyzed vinyl ester resin has a degree of hydrolysis of at most 70% by mole, it is contained in a concentration of at most 50% by weight, and it satisfies the equation: 1n y>0.042x+1.0, in which y is the cloud point (.degree. C.) of a 30% by weight aqueous solution of the partially hydrolyzed vinyl ester resin, and x is the degree of hydrolysis (% by mole) of the partially hydrolyzed vinyl ester resin.
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