Hydroxyl-functional copolymers of low molar mass with substantial side-chain branching, process for their preparation, and their use
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United States of America Patent
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Dec 22, 1998
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N/A
app pub date -
May 2, 1996
filing date -
May 2, 1995
priority date (Note) -
Expired
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Abstract
Low molar mass copolymers which can be prepared by reacting one or more glycidyl esters of saturated aliphatic monocarboxylic acids having a tertiary or quaternary .alpha. carbon atom, and at least two unsaturated copolymerizable monomers of which at least one has at least one COOH group, under the conditions of a free-radical copolymerization, whereby the weight-average molar mass of the copolymers is below 3500 g/mol and the proportion of branched side chains in the copolymer is at least 20% by mass are disclosed. Also disclosed are methods of making these copolymers and the use thereof in binder and coating systems.
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