ORGANIC POLYSILOXANE-MODIFIED GRAFT COPOLYMER
PROBLEM TO BE SOLVED: To obtain an organic polysiloxane-modified graft copolymer containing a graft chain derived from both macromonomers of an organic polysiloxane and a poly(ethylene-butylene) and to provide a method for producing the copolymer. SOLUTION: A mixture of ethylhexyl acrylate, polydime...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
04.07.2000
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To obtain an organic polysiloxane-modified graft copolymer containing a graft chain derived from both macromonomers of an organic polysiloxane and a poly(ethylene-butylene) and to provide a method for producing the copolymer. SOLUTION: A mixture of ethylhexyl acrylate, polydimethylsiloxane having a ω-methacryloyloxypropyl end group, poly(ethylene-butylene) having a ω- methacryloylurethane end group, toluene and 2,2-azobisisobutyronitrile is heated and polymerized with stirring at 70 deg.C for 24 hrs in a nitrogen atmosphere and subsequently cooled to room temperature to terminate the reaction. The obtained polymer solution is poured into methanol and the solvents are evaporated under reduced pressure to give a graft copolymer containing a poly(2-ethylhexyl acrylate) segment, an urethane-functional poly(ethylene-butylene) graft chain and a methacryloyloxypropyl-functional polydimethylsiloxane graft chain as an extremely viscous polymer. The copolymer is useful as an adhesive material and a release coating. |
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Bibliography: | Application Number: JP19990361490 |