FIELD: chemistry of polymers. SUBSTANCE: tetrafluoroethylene, perfluorovinyl ether, vinylidene fluoride, perfluorovinyl ether is preferably selected from group consisting of perfluoromethylvinyl ether and perfluoropropylvinyl ether. Fluoroelastomers are prepared by copolymerization of said monomers in aqueous emulsion in the presence of microemulsion of perfluoropolyoxyethylenes or perfluoropolyoxyalkylenes. Fluoroelastomers include iodine and/or bromine atoms in chain at end positions. Fluoroelastomers are used for manufacturing sealing rings. Novel fluoroelastomers have high resistance to polar solvents and bases, exceptional shrinkage parameters at high temperatures, low vitrification temperature and good processability. EFFECT: improved properties of the elastomers. 8 cl, 2 tbl
Title | Year | Author | Number |
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CURABLE FLUOROELASTOMER, MIXTURE CONTAINING PERFLUOROELASTOMER AND INDUSTRIAL PRODUCT | 2002 |
|
RU2301235C2 |
FLUOROELASTOMER | 1994 |
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FLUOROELASTOMERS | 2005 |
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PERFLUOROELASTOMER VULCANIZED BY PEROXIDE METHOD, PERFLUOROELASTOMER-CONTAINING MIXTURE AND INDUSTRIAL ARTICLE | 2002 |
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THERMOPROCESSIBLE TETRAFLUOROETHYLENE COPOLYMER | 1994 |
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FLUOROELASTOMERS | 2001 |
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PERFLUORO-ELASTOMER COMPOSITIONS | 2005 |
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RU2383563C2 |
PERFLUORODIOXOLS, METHOD OF PREPARING THEREOF (VARIANTS), PERFLUORODIOXOLE HOMOPOLYMERS AND COPOLYMERS, THERMALLY PROCESSIBLE TETRAFLUOROETHYLENE COPOLYMERS | 1994 |
|
RU2139866C1 |
FLUOROVINYL ETHERS AND POLYMERS PREPARED THEREFROM | 2001 |
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RU2269506C2 |
FLUORINATED THERMOPLASTIC ELASTOMERS AND METHOD OF PREPARATION THEREOF | 1995 |
|
RU2158273C2 |
Authors
Dates
1998-11-27—Published
1994-03-29—Filed