D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
8/31.07
D06P 3/10 (2006.01) C09B 67/26 (2006.01) D06P 3/82 (2006.01)
Patent
CA 1186457
Abstract of the disclosure: Certain reactive dyestuffs of commercial constitution are available in a form which does not react with natural or synthetic polyamide fibers and have therefore to be converted to their reactive form before being able to undergo a covalent bond with the fiber material. The methods hitherto applied in the practice for this purpose are unsatisfactory because they either do not produce a sufficient amount of reactive dyestuff under the prevailing conditions, or due to susceptibility of the converted form to hydrolysis portions of the dyestuff are inactivated, thus resulting in dyestuff losses in both cases. In accordance with the invention these drawbacks are overcome by converting first the dyestuffs into their fiber-reactive form, before dyeing or printing, by treating them under correspondingly typical conditions, for example in an alkaline medium, and chemically stabilizing then this converted form by alteration of the pH, for example to the acidic range. The dyestuff formulations so obtained are then used for the dyeing or printing of natural or synthetic polyamide fibers in a neutral to acidic pH range This is the decisive condition for acceptable yields as compared to the hitherto known operation modes.
404551
Glander Siegfried
Schon Franz
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
LandOfFree
Process for the pad-dyeing or printing of textile material... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the pad-dyeing or printing of textile material..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the pad-dyeing or printing of textile material... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1274567