发明名称 |
AQUEOUS DISPERSION OF LOW MOLECULAR WEIGHT POLYTETRAFLUOROETHYLENE, LOW MOLECULAR WEIGHT POLYTETRAFLUOROETHYLENE POWDER, AND METHOD FOR PRODUCING LOW MOLECULAR WEIGHT POLYTETRAFLUOROETHYLENE |
摘要 |
Disclosed is an aqueous dispersion of a low molecular weight polytetrafluoroethylene, which contains an easily removable surfactant, while having good dispersion stability. Specifically disclosed is an aqueous dispersion of a low molecular weight polytetrafluoroethylene [PTFE] containing a tetrafluoroethylene [TFE] unit, or containing a TFE unit and a modified monomer unit copolymerizable with the TFE unit. This aqueous dispersion of a low molecular weight PTFE is characterized in that a fluorine-containing compound represented by the general formula (1) below is contained in an amount of 70-9000 ppm relative to the aqueous dispersion, and the average primary particle diameter of the low molecular weight PTFE is 100-350 nm. X-(CF2)m-Y (1) (In the formula, X represents H or F; m represents an integer of 3-5; and Y represents -SO3M, -SO4M, -SO3R, -SO4R, -COOM, -PO3M2 or -PO4M2 (wherein M represents H, NH4 or an alkali metal, and R represents an alkyl group having 1-12 carbon atoms).) |
申请公布号 |
WO2009020187(A1) |
申请公布日期 |
2009.02.12 |
申请号 |
WO2008JP64240 |
申请日期 |
2008.08.07 |
申请人 |
DAIKIN INDUSTRIES, LTD.;YAMANAKA, TAKU;TSUDA, NOBUHIKO;TSUJI, MASAYUKI;SAWADA, YASUHIKO |
发明人 |
YAMANAKA, TAKU;TSUDA, NOBUHIKO;TSUJI, MASAYUKI;SAWADA, YASUHIKO |
分类号 |
C08F14/26;C08F2/26;C08F2/38;C08F6/22;C08J3/16;G03G9/08 |
主分类号 |
C08F14/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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