STYRENE BUTADIENE LATEX BINDER FOR WATERPROOFING APPLICATIONS
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United States of America Patent
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Jan 14, 2021
app pub date -
May 7, 2018
filing date -
May 8, 2017
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Abstract
The present disclosure relates to compositions comprising a copolymer derived from polymerizing monomers comprising a vinyl aromatic monomer, butadiene, and an acid monomer, in the presence of a chain transfer agent. The chain transfer agent can be present in an amount sufficient to reduce the theoretical glass transition temperature (Tg) of the copolymer by at least 5° C. compared to a copolymer polymerized using identical monomers in the absence of the chain transfer agent. The compositions can be used to prepare compositions such as coatings that have improved water resistance. Methods of making the copolymers are also provided.
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