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. 14, 1978
Filed:
Jul. 30, 1976
Helmut Beutler, Kelkheim, Taunus, DE;
Joachim W Lehmann, Kelkheim, Taunus, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
Exhaust process for the isothermal high-temperature dyeing of textile material made of hydrophobic synthetic fibers in a closed dyeing system with water-insoluble disperse dyestuffs, according to which the disperse dyestuff predispersed in water of 40.degree. to 60.degree. C is introduced into the aqueous bath free of dyestuff that is already circulating and heated together with the material to a dyeing temperature within the range of from 115.degree. to 140.degree. C and adjusted to pH 4 - 6, which comprises evaluating the number of the bath circulations per minute by measuring it and the amount of dyestuff exhausted onto the fiber at the same time, and introducing the predispersed dyestuff in doses into the dyebath, depending on the obtained measuring values.