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    • 7. 发明授权
    • Crosslinked fluoropolymer networks
    • 交联氟聚合物网络
    • US08394870B2
    • 2013-03-12
    • US12504320
    • 2009-07-16
    • Ming-Hong HungBruno AmeduriGeorgi Kostov
    • Ming-Hong HungBruno AmeduriGeorgi Kostov
    • C08F16/24
    • C08F214/184C08F8/00C08F8/02C08F8/04C08F8/12C08F8/14C08F8/20C08F214/18C08F299/00C08F214/222
    • Disclosed herein is a crosslinked fluoropolymer network formed by the free radical initiated crosslinking of a diacrylate fluoropolymer The diacrylate copolymer is of formula CH2═CR′COO—(CH2)n—R—(CH2)n—OOCR′═CH2, wherein R is selected from the group consisting of i) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), ii) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, iii) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and iv) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin, R′ is H or —CH3, n is 1-4 and wherein said oligomer has a number average molecular weight of 1000 to 25,000 daltons. The source of the free radicals may be a photoinitiator or an organic peroxide.
    • 本文公开了通过二丙烯酸酯含氟聚合物的自由基引发交联形成的交联的氟聚合物网络。二丙烯酸酯共聚物具有式CH 2 = CR'COO-(CH 2)n -R-(CH 2)n -OOCR' = CH 2,其中R为 选自i)包含偏二氟乙烯和全氟(甲基乙烯基醚)的共聚单元的低聚物,ii)包含偏二氟乙烯和六氟丙烯的共聚单元的低聚物,iii)包含四氟乙烯和全氟(甲基)丙烯的共聚单元的低聚物 乙烯基醚),和iv)包含四氟乙烯和烃烯烃的共聚单元的低聚物,R'是H或-CH 3,n是1-4,并且其中所述低聚物的数均分子量为1000-25,000道尔顿。 自由基的来源可以是光引发剂或有机过氧化物。
    • 8. 发明申请
    • PROCESS FOR PRODUCING FLUOROPOLYMERS
    • 生产氟聚合物的方法
    • US20090186969A1
    • 2009-07-23
    • US12354218
    • 2009-01-15
    • Michael Cregg CoughlinMing-Hong Hung
    • Michael Cregg CoughlinMing-Hong Hung
    • C08K5/51
    • C08F14/18C07F9/091C08F2/26C08F2/20
    • An emulsion polymerization process for the production of non-elastomeric fluoropolymers is disclosed wherein at least one fluorosurfactant is employed as dispersant, said fluorosurfactant being a fluoroalkylphosphoric acid ester of the formula X-Rf-(CH2)n—O—P(O)(OM)2, wherein n is 1 or 2, X═H or F, M=a univalent cation, and Rf is a C4-C6 fluoroalkyl or fluoroalkoxy group. Optionally, a second dispersing agent may be employed in the polymerization, said second agent being a perfluoropolyether having at least one endgroup selected from the group consisting of carboxylic acid, a salt thereof, sulfonic acid and a salt thereof, phosphoric acid and a salt thereof.
    • 公开了用于制备非弹性体含氟聚合物的乳液聚合方法,其中使用至少一种含氟表面活性剂作为分散剂,所述含氟表面活性剂是式X-Rf-(CH2)nOP(O)(OM)2的氟代烷基磷酸酯, 其中n为1或2,XH或F,M =单价阳离子,Rf为C4-C6氟代烷基或氟代烷氧基。 任选地,在聚合中可以使用第二分散剂,所述第二试剂是具有至少一个选自羧酸,其盐,磺酸及其盐的端基的全氟聚醚,磷酸及其盐 。