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:
Jul. 31, 1990
Filed:
Jul. 07, 1989
Applicant:
Inventors:
Mounir M Ghali, Dublin, CA (US);
Winston L Hedges, Livermore, CA (US);
Assignee:
Hexcel Corporation, Dublin, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528480 ; 528490 ; 528496 ; 528497 ; 528498 ; 528503 ; 524319 ; 524323 ; 524326 ; 524366 ; 524376 ; 524379 ; 524380 ; 427 44 ;
Abstract
Polyethersulfone is densified by preparation of a homogeneous paste with a semi-solvent, which may be drawn off by heating and vacuum, from an emulsion prepared from the paste. The resulting PES is substantially densified, with a reduced surface area. The densified PES can be added in significant amounts to thermosetting resin preparations, without a substantial increase in of viscosity.