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:
Sep. 21, 1999
Filed:
Nov. 07, 1997
Applicant:
Inventors:
Eric B Stephens, Roebuck, SC (US);
Mark E Ragsdale, Duncan, SC (US);
Assignee:
Milliken Research Corporation, Spartanburg, SC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; D06P / ; D06P / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
524167 ; 524190 ; 524583 ; 524585 ; 534729 ; 8403 ; 8508 ; 8509 ; 8512 ; 8513 ; 8514 ; 8518 ; 8576 ; 8647 ;
Abstract
Disazo chromphores having at least two different poly(oxyalkylene) substituents are linked together by a covalent bond or by an intervening connecting group to form dimers. The preferred poly(oxyalkylene) substituents are straight chain polymers consisting of ethylene oxide and propylene oxide. The disazo colorants are useful for coloring thermoplastic resins such as polypropylene and polyethylene and show improved extraction, migration, clarity and thermal stability characteristics as compared to standard monoazo colorants.