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:
Apr. 24, 1984
Filed:
Oct. 02, 1981
Applicant:
Inventor:
Stephen Y Lin, Wausau, WI (US);
Assignee:
Reed Lignin, Inc., Greenwich, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07G / ; C09K / ; D06P / ;
U.S. Cl.
CPC ...
8528 ; 8560 ; 8589 ; 8933 ; 1061 / ; 1061 / ; 106316 ; 2601 / ; 527403 ;
Abstract
Dispersants, especially well suited for use in thermosol dyeing processes, are produced by reacting methylol hydroxybenzene compounds with sulfonated lignin derivatives. The dispersants have high levels of heat stability and low staining characteristics, coupled with desirable dye reduction, foaming, milling and viscosity-reducing properties. Dyestuffs, dye pastes, and dye baths, as well as methods utilizing them, are provided.