20-03-2014 дата публикации
Номер: US20140080987A1
A fluoroelastomer comprising a copolymer of fluoroolefin monomers selected from one or more of the group consisting of 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene and 1-chloro-3,3,3-trifluoropropene, and ethylenically unsaturated co-monomers; wherein the fluoroelastomer has a glass transition temperature (Tg) of from about −60° C. to about 53° C. A process of making the fluoroelastomer. 1. A fluoroelastomer comprising a copolymer comprising a) fluoroolefin monomers selected from one or more of the group consisting of 2 ,3 ,3 ,3-tetrafluoropropene , 1 ,3 ,3 ,3-tetrafluoropropene and 1-chloro-3 ,3 ,3-trifluoropropene , and b) ethylenically unsaturated co-monomers; wherein the fluoroelastomer has a glass transition temperature (Tg) of from about −60° C. to about 53° C.2. A fluoroelastomer consisting essentially of a copolymer comprising a) fluoroolefin monomers selected from one or more of the group consisting of 2 ,3 ,3 ,3-tetrafluoropropene , 1 ,3 ,3 ,3-tetrafluoropropene and 1-chloro-3 ,3 ,3-trifluoropropene , and b) ethylenically unsaturated co-monomers; wherein the fluoroelastomer has a glass transition temperature (Tg) of from about −60° C. to about 53° C.3. The fluoroelastomer of claim 1 , wherein the ethylenically unsaturated co-monomers are selected from one or more of the group consisting of ethylene claim 1 , propene claim 1 , butylene claim 1 , cyclopentene claim 1 , cycloheptene claim 1 , cyclooctene and hexafluoropropylene.4. The fluoroelastomer of claim 3 , wherein all the ethylenically unsaturated co-monomers together are present in an amount of from about 30 to about 95 mole percent of all the monomers of the copolymer.5. The fluoroelastomer of claim 4 , wherein the mole ratio of all the fluoroolefin monomers together to all the ethylenically unsaturated co-monomers together is from about 1:0.8 to about 1:4.3.6. The fluoroelastomer of claim 5 , wherein the copolymer comprises curing site monomers.7. The fluoroelastomer of claim 6 , wherein ...
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