The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2015
Filed:
Dec. 01, 2011
Applicants:
Detlef Bumann, Alsbach-Haehnlein, DE;
Albert Drexler, Hoechst/Odw., DE;
Ricardo Luiz Willemann, Shanghai, CN;
Inventors:
Detlef Bumann, Alsbach-Haehnlein, DE;
Albert Drexler, Hoechst/Odw., DE;
Ricardo Luiz Willemann, Shanghai, CN;
Assignee:
Evonik Röhm GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
B32B 1/08 (2006.01); B29C 47/00 (2006.01); C08L 81/06 (2006.01); C08J 3/20 (2006.01); F16L 57/06 (2006.01); B32B 23/00 (2006.01);
U.S. Cl.
CPC ...
B29C 47/0004 (2013.01); C08L 81/06 (2013.01); C08J 3/20 (2013.01); C08J 2381/06 (2013.01); C08J 2427/18 (2013.01); B29C 47/0045 (2013.01); F16L 57/06 (2013.01);
Abstract
The invention relates to an improved blend of polyphenylsulfone (PPSU) and polytetrafluoroethylene (PTFE) for producing friction-reducing tapes (anti-wear tapes) used as a friction-reducing intermediate layer in flexible fluid pipes, e.g. oil pipes.