USE OF ETHYLENE-TETRAFLUOROETHYLENE CARBOXYLIC ACIDS AND SALTS AS SURFACTANTS FOR AQUEOUS EMULSION POLYMERIZATION OF FLUORINATED MONOMER
申请人:Qiu Weiming
公开号:US20100160550A1
公开(公告)日:2010-06-24
Provided are polyfluorinated carboxylic acids and their salts containing an ethylene-tetrafluoroethylene moiety. The polyfluorinated carboxylic acids and salts are useful as surfactants in polymerization processes.
Ethylene-Tetrafluoroethylene Carboxylic Acids and Salts
申请人:Qiu Weiming
公开号:US20100160584A1
公开(公告)日:2010-06-24
Polyfluorinated carboxylic acids and their salts containing an ethylene-tetrafluoroethylene moiety, which are useful as surfactants in a process for the dispersion polymerization of fluorinated monomer in an aqueous polymerization medium.
US8058375B2
申请人:——
公开号:US8058375B2
公开(公告)日:2011-11-15
[EN] ETHYLENE-TETRAFLUOROETHYLENE CARBOXYLIC ACIDS AND SALTS<br/>[FR] ACIDES ÉTHYLÈNE-TÉTRAFLUOROÉTHYLÈNE CARBOXYLIQUES ET SELS CORRESPONDANTS
申请人:DU PONT
公开号:WO2010075354A1
公开(公告)日:2010-07-01
Polyfluorinated carboxylic acids and their salts containing an ethylene-tetrafluoroethylene moiety, which are useful as surfactants in a process for the dispersion polymerization of fluorinated monomer in an aqueous polymerization medium.
聚氟碳羧酸及其盐含有乙烯四氟乙烯基团,可用作在含水聚合介质中进行氟单体分散聚合过程中的表面活性剂。
Reactions of 3,3,4,4-tetrafluorohexa-1,5-diene. Part II. Cyclisation to a four-membered ring in the thermal addition of pentafluoroiodoethane
作者:P. Piccardi、M. Modena、L. Cavalli
DOI:10.1039/j39710003959
日期:——
Pentafluoroiodoethane reacts at 210–220° with 3,3,4,4-tetrafluorohexa-1,5-diene to give unusual cyclisation products having a four-memberedring, contrary to analogous reactions of perfluoroalkyl iodides with hexa-1,5-diene and in spite of the unfavourable entropy change to give highly strained ring structure. Also minor amounts of an isomeric saturated monoadduct containing a five-membered ring and