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:
Nov. 02, 1976
Filed:
Nov. 04, 1974
Applicant:
Inventors:
Robert Alden Lofquist, Richmond, VA (US);
John Christopher Haylock, Richmond, VA (US);
Assignee:
Allied Chemical Corporation, Petersburg, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06P / ; D06P / ;
U.S. Cl.
CPC ...
8165 ; 8169 ;
Abstract
A method of treating polycarbonamide fiber, such as nylon 6 yarn for carpets, has been discovered to increase dye fastness when the dyed fiber is exposed to ozone. The method is coating the fibers with a tertiary amine, or a substituted piperidine, morpholine, or piperazine compound. The compound must contain at least one moiety of straight or branched chain alkyl, alkenyl or aralkyl containing 6 to 24 carbon atoms.
Lofquist, Robert. (1976). Tertiary amines, substituted piperidine, morpholine or piperazine (U.S. Patent No. 3989455). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3989455
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile