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. 14, 1989
Filed:
Jul. 07, 1987
Applicant:
Inventor:
John H Hansen, Greensboro, NC (US);
Assignee:
Burlington Industries, Inc., Greensboro, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
8584 ; 106 1819 ; 4273933 ; 427223 ; 81271 ; 8181 ;
Abstract
Nylon/cotton blend fabrics containing at least 40% by weight of nylon are rendered flame resistant and durable to multiple launderings in a two step process in which a THP/urea precondensate/ammonia polymer network is formed within the cotton fiber structure then durability is enhanced in a second step 1 which a flame resistant cyclic phosphonate ester and a THP salt plus urea are applied. Durability up to 50 multiple washings and continued flame resistance for these nylon/cotton blend fabrics are reported.