C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 27/18 (2006.01) C08L 71/02 (2006.01) C09D 127/18 (2006.01) C09D 171/02 (2006.01) H01M 4/62 (2006.01)
Patent
CA 2216404
The present invention provides an aqueous polytetrafluoroethylene dispersion composition characterized in that the composition comprises 30 to 65 wt. % of polytetrafluoroethylene and a polyoxyethylene alkyl ether in an amount of 2 to 10 wt. % based on the polytetrafluoro- ethylene, the polyoxyethylene alkyl ether being represented by the formula RO (CH2 CH2 O) nH wherein R is a saturated or unsaturated hydrocarbon group having 8 to 18 carbon atoms, and n is 5 to 18, having a cloud point of over 45 °C to not higher than 85 °C- and containing 65 to 70 wt. % of ethylene oxide in the molecule.
La présente invention concerne une composition de dispersion aqueuse de PTFE caractérisée en ce qu'elle comporte de 30 à 65 % en poids de PTFE et de 2 à 10 % en poids (par rapport au PTFE) d'un alkyléther de polyoxyéthylène représenté par la formule générale: RO(CH2CH2O)nH, dans laquelle R est un hydrocarbyle C8-C18 saturé ou non et n est un nombre de 5 à 8, composition dont le point de trouble dépasse 45 DEG C mais pas 85 DEG C et dont la molécule a une teneur de 65 à 70 % en poids d'oxyde d'éthylène.
Hayashi Tadao
Miura Toshiro
Daikin Industries Ltd.
Marks & Clerk
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