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:
Mar. 20, 1979
Filed:
Sep. 06, 1977
Applicant:
Inventors:
Raymond G Spain, Huntington Beach, CA (US);
Albert L Miller, Torrance, CA (US);
Assignee:
HITCO, Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G / ;
U.S. Cl.
CPC ...
428367 ; 427394 ; 4274 / ; 4274 / ; 428375 ; 428392 ;
Abstract
A water soluble sizing for fibrous carbonaceous material consists of either 1,3-diglycidyl-5,5-dimethylhydantoin or 1,3-diglycidylhydantoin. The carbonaceous material is sized by immersion in an aqueous solution of the sizing having a concentration of 0.1-10%, preferably 1-2%, by weight, followed by drying. In addition to being highly water soluble, non-toxic and non-flammable, the sizing provides excellent filament control so as to minimize fuzzing during subsequent handling of the carbonaceous material and is compatible with an epoxy resin matrix system.