US 7,612,000 B2 · Modacrylic shrinkable fiber and method for manufacturing the same

Abstract

A modacrylic shrinkable fiber according to the present invention is containing a polymer composition obtained by mixing 50 to 99 parts by weight of a polymer (A) containing 40 wt % to 80 wt % of acrylonitrile, 20 wt % to 60 wt % of a halogen-ontaining monomer and 0 wt % to 5 wt % of a sulfonic-acid-containing monomer, and 1 to 50 parts by weight of a polymer (B) containing 5 wt % to 70 wt % of acrylonitrile, 20 wt % to 94 wt % of an acrylic ester and 1 wt % to 40 wt % of a sulfonic-acid-containing monomer containing a methallylsulfonic acid or metal salts thereof or amine salts thereof, in which a total amount of the polymer (A) and the polymer (B) is 100 parts by weight. In this way, a modacrylic shrinkable fiber that has a favorable color development property after dyeing and a high shrinkage ratio even after dyeing is obtained.

Claims12

Dependent claims

A modacrylic shrinkable fiber manufactured from a spinning solution comprising a polymer composition obtained by mixing

50 to 99 parts by weight of a polymer (A) comprising 40 wt % to 80 wt % of acrylonitrile, 20 wt % to 60 wt % of a halogen-containing monomer and 0 wt % to 5 wt % of a sulfonic-acid-containing monomer, and
1 to 50 parts by weight of a polymer (B) comprising 5 wt % to 70 wt % of acrylonitrile, 20 wt % to 94 wt % of an acrylic ester and 16 wt % to 40 wt % of a sulfonic-acid-containing monomer comprising a methallylsulfonic acid or metal salts thereof or amine salts thereof, and no halogen-containing monomer;
a total amount of the polymer (A) and the polymer (B) being 100 parts by weight;
wherein the modacrylic shrinkable fiber is capable of being dyed in deep colors at a temperature equal to or lower than 80° C. and achieving a post-dyeing shrinkage ratio treated in dry heat at 130° C. for 5 minutes of equal to or larger than 20%.

1 more element

A method for manufacturing a modacrylic shrinkable fiber, wherein

spinning is performed using a spinning solution obtained by dissolving in acetone
50 to 99 parts by weight of a polymer (A) comprising 40 wt % to 80 wt % of acrylonitrile, 20 wt % to 60 wt % of a halogen-containing monomer and 0 wt % to 5 wt % of a sulfonic-acid-containing monomer, and
1 to 50 parts by weight of a polymer (B) comprising 5 wt % to 70 wt % of acrylonitrile, 20 wt % to 94 wt % of an acrylic ester and 16 wt % to 40 wt % of a sulfonic-acid-containing monomer comprising a methallylsulfonic acid or metal salts thereof or amine salts thereof, and no halogen-containing monomer;
a total amount of the polymer (A) and the polymer (B) being 100 parts by weight;
drawing is performed, and
dyeing is performed at a temperature equal to or lower than 80° C., thus obtaining a modacrylic shrinkable fiber having a post-dyeing shrinkage ratio being treated in dry heat at 130° C. for 5 minutes of equal to or larger than 20%.

3 more elements

Dependencies are inferred from the claim text.

Modacrylic shrinkable fiber and method for manufacturing the same

Life of this patent

Modacrylic shrinkable fiber and method for manufacturing the same

Life of this patent

Abstract

Claims12