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AQUEOUS POLYMERIZATION OF FLUORINATED MONOMER USING POLYMERIZATION AGENT COMPRISING HIGH MOLECULAR WEIGHT FLUOROPOLYETHER ACID OR SALT AND FLUOROPOLYETHER ACID OR SALT SURFACTANT
AQUEOUS POLYMERIZATION OF FLUORINATED MONOMER USING POLYMERIZATION AGENT COMPRISING HIGH MOLECULAR WEIGHT FLUOROPOLYETHER ACID OR SALT AND FLUOROPOLYETHER ACID OR SALT SURFACTANT
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机译:使用包含高分子量氟代聚烯烃酸或盐和氟代聚烯烃酸或盐表面活性剂的聚合剂,对含氟单体进行水聚合
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摘要
A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, the polymerization agent comprising: fluoropolyether acid or salt thereof having a number average molecular weight of at least about 800 g/mol; and fluorosurfactant having the formula: [R1—On-L-A−]Y+ wherein: R1 is a linear or branched partially or fully fluorinated aliphatic group which may contain ether linkages; n is 0 or 1; L is a linear or branched alkylene group which may be nonfluorinated, partially fluorinated or fully fluorinated and which may contain ether linkages; A− is an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion, and phosphonate; and Y+ is hydrogen, ammonium or alkali metal cation; with the proviso that the chain length of R1—On-L- is not greater than 6 atoms.
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机译:一种方法,包括在含有引发剂和聚合剂的水性介质中聚合至少一种氟化单体,以形成含氟聚合物颗粒的水性分散体,该聚合剂包括:数均分子量为至少约800g的氟聚醚酸或其盐。 / mol;以及具有式[R 1 -On-L-A +] Y +的含氟表面活性剂,其中:R 1是直链或支链的部分或完全氟化的脂族基团,其可以包含醚键; n为0或1; L为直链或支链的亚烷基,其可以是非氟化的,部分氟化的或完全氟化的并且可以包含醚键; A&减;是选自羧酸根,磺酸根,磺酰胺根阴离子和膦酸根的阴离子基团; Y +为氢,铵或碱金属阳离子;条件是R 1 -On-L-的链长不大于6个原子。
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