Initiation system for the anionic polymerization of (meth)acrylic monomers
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United States of America Patent
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Oct 14, 1997
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N/A
app pub date -
Jun 7, 1995
filing date -
Jul 19, 1991
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Abstract
A diblock copolymer obtained by polymerizing acrylic, methacrylic or nonacrylic vinyl monomers in the presence of a polymerization initiating amount of an initiation system including (1) at least one functional initiator and (2) an alkali metal alcoholate. The alcoholate has the formula: R'OM' in which M' is an alkali metal and R' has the formula: R.sup.1 (OR.sup.2).sub.m in which R.sup.1 is a linear or branched alkyl radical containing from 1 to 6 carbon atoms or an arylalkyl radical, R.sup.2 is a linear or branched alkylene radical containing from 2 to 4 carbon atoms, and m is the integer 1, 2 or 3.
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