KR950014175A - Thermoplastic Polyetherester Block Copolymer - Google Patents

Abstract

The present invention relates to a thermoplastic polyether ester convex copolymer, and more particularly, to a polyether ester block copolymer having excellent heat resistance and hydrolysis resistance represented by the following structural formula (I).

In the above formula, D is a radical from which two hydroxy groups are removed from C ₂ to C ₈ saturated aliphatic diols and cyclic diols alone or in a mixture of two or more, and diol compounds include ethylene glycol, 1, 2-propanediol, 1, 3-propanediol, 1, 4-butanediol, 1, 5-pentanediol, 1, 6-hexanediol, 1, 4-cyclohexanedimethanol, R is an aromatic, aliphatic and cyclic dicarboxyl with a molecular weight of 500 or less Acids alone, or radicals from which two carboxyl groups have been removed from a mixture of two or more, dicarboxylic acid compounds include terephthalic acid, isophthalic acid, orthophthalic acid, adipic acid, suberic acid, azeraic acid, sebacic acid, 1,4-cyclohexane Dicarboxylic acid or a lower alkylester product thereof, G is a polyetherglycol having a molecular weight of 400-4000 alone or a mixture of two or more thereof, and a radical having two hydroxy groups removed therefrom. Ethylene glycol, polypropylene glycol, polytetramedylene glycol, m is an integer of 20-200, n and x are integers of 1-10, y is an integer of 50-100.

Description

Thermoplastic Polyetherester Block Copolymer

Since this is an open matter, no full text was included.

Claims (5)

The polyether ester block copolymer represented by following structural formula (I). Wherein D is a radical from which two hydroxy groups are removed from a mixture of C ₂ to C ₈ saturated aliphatic diols and cyclic diols alone or two or more, and diol compounds include ethylene glycol, 1, 2-propanediol, 1 , 3-propanediol, 1, 4-butanedione, 1, 5-pentanediol, 1, 6-hexanediol, 1, 4-cyclohexanedimethanol, R is an aromatic, aliphatic and cyclic dica with a molecular weight of 500 or less As a radical in which two carboxyl groups have been removed from lenic acid alone or in a mixture of two or more thereof, dicarboxylic acid compounds include terephthalic acid, isopral acid, orthophthalic acid, adipic acid, suberic acid, azeraic acid, sebacic acid, 1, 4-cyclocarboxylic dicarboxylic acid or a lower alkyl ester product thereof, G is a polyetherglycol compound having a molecular weight of 400 to 4000, or a mixture of two or more thereof, and having two hydroxy groups removed therefrom. Play And ethylene glycol, polypropylene gwilren glycol, polytetramethylene glycol, m is an integer of 20~200, n and x is an integer of 1~10, y is an integer from 50 to 100. In preparing a polyether ester block copolymer, a hard segment is formed using a dibasic acid component and a low molecular weight diol component, and then a polyester convex copolymer having a soft segment formed using the basic acid and polyether glycol is synthesized. A method for producing a polyether ester block copolymer, wherein the ε-caprolactone is formed by ring opening polymerization. The method of claim 1, wherein the polyester block copolymer is a method for producing a polyether ester block copolymer, characterized in that the hard segment contains 50 to 95% by weight. The method according to claim 1, wherein the epsilon -caprolactone is contained in an amount of 10 to 60% by weight based on the total polyetherester convex copolymer composition. The dicarboxylic acid component according to claim 1, wherein terephthalic acid, isophthalic acid, adipic acid, 1,4-cyclohexane dicarboxylic acid or a lower alkyl ester thereof is used, and diol component is ethylene glycol, 1 , 4-butanediol, 1, 4-cyclohexanediol, a polyether glycol component, polypropylene glycol or polytetramethylene glycol, characterized in that for producing a polyether ester botox copolymer. ※ Note: The disclosure is based on the initial application.