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 JP5602637
Kind Code:
B2
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:
October 08, 2014
Filing Date:
December 09, 2008
Export Citation:
Assignee:
Leibniz * institute フュア Polymer フォルシュング Dresden エーファウ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
Attorney, Agent or Firm:
アインゼル Felix-Reinhardt
Takuya Kuno
Takuya Kuno