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:
Dec. 05, 1989
Filed:
Jun. 21, 1988
Hans-Ulrich von der Eltz, Frankfurt am Main, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
Process for dyeing textile wovens or knits made of polyester fibers or mixtures thereof with other fibers in jet dyeing machines. The recently developed jet dyeing machines with aerodynamic fabric transport permit a drastic shortening of the liquor ratio and of the addition of higly concentrated dye solutions or dispersions directly into the driving gas circulation system under isothermal conditions. However, the prerequisite is dyes in finished form. According to the invention, it has now been found that the costly finishing treatment is dispensible when non-finished disperse dyes are dissolved highly concentratedly in suitable, preferably water-miscible, ecologically and toxicologically safe organic solvents, and these solutions are metered with the aid of the new technology specifically into the circulating gas stream to form a dispersion of the dyes which then produces a level dyeing on the textile material.