logo

For the Inventor, By the Inventor

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.:

US 5321059 B1

PDFFull Text
Date of Patent:
Jun. 14, 1994

Filed:

Nov. 09, 1992

Process for preparing polytetrafluoroethylene granular powder containing

Applicant:
Inventors:

Norimasa Honda, Settsu, JP;

Kazuhide Sawada, Settsu, JP;

Kenjiro Idemori, Settsu, JP;

Hirokazu Yukawa, Settsu, JP;

Assignee:

Daikin Industries, Ltd., Osaka, JP;

Attorney:

Armstrong, Westerman, Hattori, McLeland & Naughton

Primary Examiner:

Paul R Michl

Assistant Examiner:

P Niland

Int. Cl.
CPC ...
C08K / ; C08K / ; C08J / ; C08L / ;
U.S. Cl.
CPC ...
523212 ; 523213 ; 523214 ; 524546 ;
Abstract

A process for preparing a filler-containing PTFE granular powder, which comprises mixing uniformly a PTFE powder having an average particle size of not more than 100 .mu.m and a (semi-)hydrophilic filler which is surface-treated with an organosilane of the formula: ##STR1## in a two-phase liquid medium comprising water and a water-insoluble organic liquid having a surface tension of not more than 35 dynes/cm at 25.degree. C. Accordingly to the process, the separation of filler can be avoided, and a colorless molded article can be provided.

Find Patent Forward Citations

Honda, Norimasa. (1994). Process for preparing polytetrafluoroethylene granular powder containing (U.S. Patent No. 5321059). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5321059

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…