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:
Jan. 13, 1976
Filed:
Oct. 05, 1973
Dara Ardeshir Jilla, Collinsville, VA (US);
Martin Processing Co., Inc., Martinsville, VA (US);
Abstract
A process is disclosed for coloring a polyester material, which comprises impregnating the same by padding, printing or cascading with an aqueous solution or printing paste of one or more acid dyes incorporated with both (a) an organic nitrogen compound and (b) an organic carboxylic acid, drying the impregnated polyester material and then exposing same to dry heat at a temperature between 150.degree.C. and 230.degree.C. for a period of 5 to 60 seconds, thereby effecting fixation of said acid dye or dyes on the polyester material and uniform distribution thereof within the polyester material. The organic nitrogen compound with which the polyester material is treated is an alkyleneamine, an alkanolamine, or an alkylamine. Suitable lengths (in the direction of travel) of the polyester yarn or other form of polyester material undergoing the said impregnation is contacted in a precise, controlled manner according to a predetermined pattern to produce any desired variegated pattern contour in the final dyed polyester material. The process is preferably carried out continuously. The acid-dyed polyester material in various forms is also a part of the invention.