Toughened mercaptosiloxane modified emulsion polymerized vinylic polymers

The impact strength of certain thermoplastic vinylic polymers is improved by polymerizing the corresponding monomers in an emulsion of a diorganosiloxane containing units of the formula HSR'SiRnO3-n/2. For example a styrene acrylonitrile copolymer containing 20 percent by weight of a dimethylsi...

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Bibliographic Details
Main Authors METTLER; CLAUDIA M, FALENDER; JAMES R, SAAM; JOHN C
Format Patent
LanguageEnglish
Published 31.01.1978
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:The impact strength of certain thermoplastic vinylic polymers is improved by polymerizing the corresponding monomers in an emulsion of a diorganosiloxane containing units of the formula HSR'SiRnO3-n/2. For example a styrene acrylonitrile copolymer containing 20 percent by weight of a dimethylsiloxane-3-mercaptopropylsiloxane copolymer having 1 mol percent mercaptosiloxane has an Izod notched impact strength of 10.8 foot pounds per inch.
Bibliography:Application Number: US19760679595