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.)
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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Filing date
Publication date
Application filed by Imperial Chemical Industries LtdfiledCriticalImperial Chemical Industries Ltd
Priority to ES0324948ApriorityCriticalpatent/ES324948A2/en
Publication of ES324948A2publicationCriticalpatent/ES324948A2/en
"Improvements introduced in the object of the main patent No. 313,958, granted on January 18, 1966, by:" Procedure for the mass coloration of linear synthetic polyesters ", characterized in that it comprises the mixture of one or more dyes or dyes of the formula: ** (See formula) ** wherein D represents a polycyclic dye radical containing at least three fused rings and lacking sulfuric acid groups; Y represents -NH- or -S-; R represents a hydroxyalkyl or hydroxyalkoxyalkyl radical; n represents an integer positive number not greater than 3; m represents a positive integer not greater than 4; and the benzene ring A can be replaced in an additional way by chlorine or bromide atoms, with said polyester, then melting the mixture and giving it the form of solid objects. (Machine-translation by Google Translate, not legally binding)
ES0324948A1966-03-311966-03-31
PROCEDURE FOR MASS COLORING OF LINEAR SYNTHETIC POLYESTERS.
ExpiredES324948A2
(en)