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:
Sep. 11, 1979
Filed:
Dec. 30, 1975
Raymond Defago, Riehen, CH;
Ciba-Geigy AG, Basel, CH;
Abstract
A transfer printing process for dyeing or optically brightening hydrophilic fibrous material and blends of hydrophilic and synthetic fibrous material with sublimable reactive disperse dyes or fluorescent brighteners, which process comprises the use of inert carriers that are treated with at least one reactive disperse dye or fluorescent brightener, which, during the heat treatment of the transfer printing process, has a vapor pressure higher than 10.sup.-5 Torr at temperatures above 160.degree. C., and treating the material to be printed with at least two compounds, one of which has a boiling point higher than 120.degree. C. and a solubility or dispersibility in water of at least 25 g/l at 25.degree. C., direct or with the aid of an auxiliary solvent or dispersant, and under the transfer conditions of the dyes or fluorescent brighteners is sparingly volatile, and the other is an acid acceptor, or with at least one compound that combines both functions simultaneously.