US 2010/0304115 A1 · SHAPE MEMORY POLYAMIDE AND METHOD OF PRODUCING SHAPE MEMORY POLYAMIDE FABRIC USING THE SAME

Abstract

Disclosed is a shape memory polyamide, produced by adding a polyvalent carboxylic acid and a polyvalent amine when polyamide is polymerized from e-caprolactam or hexamethylenediamine and adipic acid, and having an aromatic component which is introduced by one or more among the polyvalent carboxylic acid and the polyvalent amine and has a total amount ranging from 0.4 mol % to 10 mol % based on the amount of the raw material for polyamide. Also, a method of producing a shape memory polyamide fabric using the shape memory polyamide is provided. The polyamide fabric produced using the shape memory polyamide is a highly functional fabric which does not easily wrinkle and easily recovers its original shape even when wrinkled, and thus may be applied as material for various kinds of clothing.

Claims13

Dependent claims

A shape memory poly amide, produced by adding a polyvalent carboxylic acid and a polyvalent amine when polyamide is polymerized using e-caprolactam or hexamethylenediamine and adipic acid as a raw material thereof, and having an aromatic component which is introduced by one or more among the polyvalent carboxylic acid and the polyvalent amine and has a total amount ranging from 0.4 mol % to 10 mol % based on an amount of the raw material for the polyamide.

A method of producing a shape memory polyamide fabric, comprising:

adding a polyvalent carboxylic acid and a polyvalent amine when polyamide is polymerized, thus synthesizing a copolyamide prepolymer having an aromatic component, a total amount of which ranges from 0.4 mol % to 10 mol % based on an amount of a raw material for the polyamide;
subjecting the copolyamide prepolymer to weaving or knitting, thus producing a woven or knitted fabric;
and subjecting the woven or knitted fabric to heat treatment under conditions of (1) below and then to dyeing under conditions of (2) below:
Tg+40° C.<Tx<Tm−20° C. (1)
Tg<Td<Tx (2)
wherein Tg is a glass transition temperature of a copolyamide prepolymer, Tx is a heat treatment temperature, Tm is a melting point of a copolyamide prepolymer, and Td is a dyeing temperature.

3 more elements

Dependencies are inferred from the claim text.

Shape memory polyamide and method of producing shape memory polyamide fabric using the same

Life of this patent

Shape memory polyamide and method of producing shape memory polyamide fabric using the same

Life of this patent

Abstract

Claims13