Differential acid dyeing of polyamide reacted with N-halogenatin

Details Differential acid dyeing of polyamide reacted with N-halogenatin Differential acid dyeing of polyamide reacted with N-halogenatin

1984-11-01

1986-07-29

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

811558, 811564, 528323, 811568, 528336, C08G 6948

Patent

active

046031782

ABSTRACT:
A method for producing a differentially dyeable polyamide is disclosed. The method comprises selectively reacting a polyamide's free amines with an N-halogenating agent. Polyamides produced according to the process of this invention will have distinct areas thereon that show varying degrees of receptivity to acid dyes and can thereby be differentially dyed using a single dyebath.

REFERENCES:
patent: 2727804 (1955-12-01), Lutgerhorst
patent: 3549306 (1977-12-01), Friedlander et al.
patent: 3707344 (1972-12-01), Becht et al.

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