Liquid preparation of an anionic dye of the disazo class

Details Liquid preparation of an anionic dye of the disazo class Liquid preparation of an anionic dye of the disazo class

C - Chemistry, Metallurgy

09

B

8/25.2

C09B 67/36 (2006.01) C09B 67/26 (2006.01)

Patent

CA 1174809

Case 1-12693/= Liquid preparation of an anionic dye of the disazo class Abstract A liquid preparation of an anionic dye of the disazo class, which preparation contains the disazo dye, which in the form of the free acid corresponds to the formula Image dissolved in a solvent mixture which is miscible with water in any proportion and which consists of N,N,N',N'- tetramethylurea, at least one alkylene glycol ether and water, and alkyl- or alkanolamine in an amount sufficient to bring the pH value of the liquid preparation to 6.5 to 8.5, the dye being in the form of alkyl- or alkanolamine. This novel liquid preparation is a concentrated true solution which is stable in storage over several months at temperatures of between about -10°C and +60°C, and which is miscible with cold and warm water in any proportion. It is suitable in particular for dyeing and printing paper, including semi-cardboard and cardboard, the dyeing of these materials being possible, for example, in the pulp, or by brushing or immersion.

369938

Affiliated with

Also associated with

Rating

Liquid preparation of an anionic dye of the disazo class does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid preparation of an anionic dye of the disazo class, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid preparation of an anionic dye of the disazo class will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1168374