公开(公告)号：US3764585A

公开(公告)日：1973-10-09

申请号：US3764585D

申请日：1972-05-03

Applicant: SNIA VISCOSA

Inventor： SICLARI F ,  PERAZZONI P ,  SILVESTRONI P

IPC: C08G69/42 ,  D06P1/62 ,  D06P3/24 ,  C08G9/04 ,  C08G9/24

CPC classification number: D06P3/242 ,  C08G69/42 ,  D06P1/625

Abstract: A method for obtaining synthetic polyamide yarns, more particularly polyamide yarns, is disclosed, which have a high affinity towards basic dyestuffs. The dyeability with basic dyestuffs is improved by adding to the polymerization mass, prior to, or during progress of, polymerization, an aromatic aldehyde having the general formula

WHEREIN M AND N ARE INTEGERS WHICH ARE 1 OR 2, THE GROUP SO3X indicates both a free sulphonic group or such a group salified with a member selected from the group consisting of ammonium ions, alkali metals and alkaline earth metals. Hypophosphorous acid, or an alkali metal salt thereof can also be added to improve the whiteness of the parts of the yarn or fabric which are not to be dyed.

Abstract translation: 公开了一种用于获得合成聚酰胺纱线，更特别是聚酰胺纱线的方法，其对碱性染料具有高亲和力。 碱性染料的染色性通过在聚合过程中加入到聚合物质中，在聚合过程中或在进行聚合过程中改进了通式为M和N为1或2的整数的芳族醛，SO 3 X既表示自由基 磺酸基或这样的基团，其与选自铵离子，碱金属和碱土金属的成员成盐。