Silated polyvinyl alcohol process
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United States of America Patent
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-
Jul 30, 1991
Issued Date -
N/A
app pub date -
Oct 1, 1990
filing date -
Sep 25, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A silated polyvinyl alcohol with a degree of substitution (D.S.) between 0.005 and 0.5 is prepared by reacting polyvinyl alcohol with a silating agent. Preferred silating agents are 3-glycidoxypropyltrimethoxysilane or vinyltrimethoxysilane. An alkali metal or ammonium salt of the silated polyvinyl alcohol can self-crosslink in the presence of atmospheric carbon dioxide to form a water resistant film which is soluble in caustic.
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