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:
Jun. 28, 1988
Filed:
Apr. 15, 1987
Applicant:
Inventors:
James K Davis, Greensboro, NC (US);
Robert W Connelly, Greensboro, NC (US);
Assignee:
Burlington Industries, Inc., Greensboro, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210634 ;
Abstract
Dyes are removed from waterless dye compositions by mixing the dyeing composition, composed of one or more dyes in a high-boiling, nonionic liquid, with an extraction solvent that is immiscible with the high-boiling liquid, yet solubilizes the dye. The dye laden extraction solvent is separated as a separate phase from the high-boiling, nonionic liquid medium.