Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB33922/31A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Schweiz AG
Original Assignee
Gesellschaft fuer Chemische Industrie in Basel CIBA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gesellschaft fuer Chemische Industrie in Basel CIBAfiledCriticalGesellschaft fuer Chemische Industrie in Basel CIBA
Publication of GB373558ApublicationCriticalpatent/GB373558A/en
White and coloured reserves under aniline black are produced by printing goods prepared with an aniline black solution with a reserve containing a sparingly volatile, strongly basic organic derivative of ammonia, either alone or in admixture with a suitable vat dyestuff, an alkali carbonate and the reducing agent necessary for fixing the vat dyestuff. Organic derivatives of ammonia specified are: piperazine, diethylethylenediamine and triethanolamine. In examples: (1) a white fabric impregnated with a solution of sodium chloride, sodium ferrocyanide and aniline hydrochloride is printed with a reserve consisting of British gum powder, water and triethanolamine, and is then steamed, oxidized, washed and dried, yielding a white effect on a black ground; (2) the reserve contains in addition Ciba Blue 2BD paste, potassium carbonate and sodium formaldehyde sulphoxylate, whereby a blue effect on a black ground is obtained. Specifications 285,041 and 302,252, [both in Class 15 (ii), Dyeing, Processes &c. for], are referred to.
GB33922/31A1931-01-141931-12-07An improved process for producing white and coloured reserves under aniline black
ExpiredGB373558A
(en)