Title:
長期安定な油-PTFE分散液及びその製造方法
Document Type and Number:
Japanese Patent JP2011509321
Kind Code:
A
Abstract:
The invention relates to the field of chemistry and relates to long-term stable oil PTFE dispersions, such as can be used, for example, in transmissions or bearings, and a method for the production thereof. The object of the present invention is therefore to disclose a long-term stable oil PTFE dispersion as well as a simple and cost-effective method for the production thereof. The object is attained with an oil PTFE dispersion comprising PTFE particles and a monoolefinically or polyolefinically unsaturated oil, wherein molecules of the olefinically unsaturated oil are covalently/chemically coupled to PTFE (primary) particle surfaces via radical reactions, and wherein a permanent charge separation between the PTFE particle surfaces and the coupled oil molecules is present and a fine dispersion of the PTFE particles in the oil or oil mixture is present. The object is furthermore attained through a method in which the modified PTFE (emulsion) polymers are mixed with persistent perfluoro (peroxy) radicals jointly with an olefinically unsaturated oil and subsequently the modified PTFE (emulsion) polymers are subjected to a mechanical stress.
Inventors:
Dieter Lehmann
Application Number:
JP2010540093A
Publication Date:
March 24, 2011
Filing Date:
December 09, 2008
Export Citation:
Assignee:
Leibniz-Institut fuer Polymerforschung Dresden e.V.
International Classes:
C08L51/00; C08F259/08; C08J3/02; C08J3/28; C10M145/22; C10M147/02; C10M177/00; C10N20/06; C10N30/00; C10N40/02; C10N40/04; C10N70/00
Domestic Patent References:
| JP2007510028A | 2007-04-19 | |||
| JP2007510029A | 2007-04-19 | |||
| JP2001514285A | 2001-09-11 | |||
| JPH1121577A | 1999-01-26 | |||
| JP2003113390A | 2003-04-18 |
Other References:
化学大辞典１ 縮刷版, vol. 第３９刷, JPN6013006595, 15 June 2006 (2006-06-15), JP, pages 225, ISSN: 0002460821
Attorney, Agent or Firm:
Toshio Yano
Takuya Kuno
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Takuya Kuno
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard