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. 21, 1978
Filed:
Sep. 06, 1977
James C Masson, Decatur, AL (US);
George Palethorpe, Durham, NC (US);
Monsanto Company, Decatur, AL (US);
Abstract
The method of preventing color-degrading interactions between certain optical brighteners and filaments made from a modacrylic polymer containing as a copolymer a halogenated ethylenically unsaturated monomer, the optical brightener preferably having the formula: ##STR1## where X and Y are basic groups selected from the group consisting of --NH.sub.2, --H(CH.sub.3).sub.2, and --N.sup.+ (CH.sub.3).sub.3 Z, where Z is selected from the group consisting of chloride, sulphate and bromide anions, n is 0 to 3, and R is an alkyl group containing 1 to 4 carbon atoms, wherein an aqueous liquid is applied to the filaments, the liquid containing 0.01 to 0.5 weight percent of a compound having the formula: ##STR2## wherein R is a member selected from the group consisting of an alkyl radical having 1 to 11 carbon atoms, a phenyl radical and an alkyl phenyl radical containing no more than eight carbon atoms.