Process for the modification of polyamide fibers
Abstract
Abstract PROCESS FOR THE MODIFICATION OF SYNTHETIC POLYAMIDE FIBERS WHICH COMPRISES TREATING THE FIBERS AT A PH OF FROM 3 TO 11 INCLUSIVE AND AT A TEMPERATURE OF FROM 40*C. TO THE BOILING TEMPERATURE OF THE BATH WITH A COMPOUND OF THE FORULA: IN WHICH A1 REPRESENTS A NON-COLOURING, ALIPHATIC, AROMATIC OR HETEROCYCLIC RADICAL, W REPRSENTS THE RESIDUE OF AN ACYLATING AGENT CARRYING AN ATOM OR GOUP OF ATOMS CAPABLE OF REACTING WITH THE POLYAMIDE FIBERS, AND R REPRESENTS A HYDROGEN ATOM OR AN ALKYL GROUP HAVING 1 TO 4 CARBON ATOMS, THE AMOUNT OF COMPOUND (I) USED BEING BETWEEN 0.1% AND 20% BY WEIGHT OF THE POLYAMIDE FIBERS. THE TREATED FIBERS HAVE DIFFERENT PROPERTIES FROM UNTREATED POLYAMIDE FIBERS AND IN PARTICULAR THEIR AFFINITY FOR ACID DYESTUFFS IS REDUCED OR RENDERED PRACTICALLY NIL. A1-SO2-N(-R)-W
Inventors
- 👤 Marcel Georges Jirou
- 👤 Pierre Charles Victor Bouvet
Bibliographic Details
Claims Analysis
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