| 摘要 |
Stable, fluid polyvinyl alcohol-containing microgels in water having a Brookfield viscosity of 1.15 to 1000 centipoises may be prepared more economically from a dry blend which comprises (A) a polymer mixture consisting of at least about 0.5% by weight of polyvinyl alcohol and one or more polysaccharide selected from the group consisting of up to about 99.5% by weight of starch and up to about 33% by weight of sodium carboxymethylcellulose, said polyvinyl alcohol having a Hoeppler viscosity of about 4 to 150 centipoises and having at least about 50 mole percent of the monomeric units present as vinyl alcohol units, (B) water-soluble, solid titanium salt of a hydroxy carboxylic acid of 2 to 10 carbon atoms in an amount which provides about 0.05 to 10 parts by weight of tetravalent titanium ions per 100 parts of polymer mixture, and (C) about 0.05 to 20 parts by weight of water-soluble, solid hydroxy carboxylic acid of 2 to 10 carbon atoms per 100 parts of polymer mixture.
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