Thermoplastic polyester elastomer resin and preparation method therefor
AssigneeSK Chemicals Co., Ltd.
InventorsYoung-Man YOO, Jaesik KANG, Eun-Yeong HWANG
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Abstract
The present invention relates to a thermoplastic polyester elastomer resin, a preparation method therefor, and an article comprising same. The thermoplastic polyester elastomer resin may have excellent elasticity and compression-elastic recovery force while having high mechanical strength, elongation, etc. Accordingly, the thermoplastic polyester elastomer resin can be utilized in the manufacture of various articles (e.g. fibers, foams, shoe parts, etc.).
Claims15
A thermoplastic polyester elastomer resin, which comprises a repeat unit (a) represented by the following Formula 1;
- a repeat unit (b) represented by the following Formula 2;
- and a repeat unit (c) represented by the following Formula 3, and which satisfies the following Relationship 1:
- 0.3
- ≤
- y
- /
- z
- ≤
- 3
-
- 5
- [
- Relationship
-
- 1
- ]
- in Formulae 1 to 3, R1 to R3 are each independently a C1 to C12 linear, branched, or cyclic divalent aliphatic hydrocarbon group;
- or a C6 to C12 divalent aromatic hydrocarbon group, m is an integer of 2 to 6, n is an integer of 4 to 6, p is an integer of 10 to 30, t is an integer of 1 to 30, and s is an integer of 1 to 40, and
- in Relationship 1, y is the weight accounted for by the repeat unit (b) represented by Formula 2 in the thermoplastic polyester elastomer resin, and z is the weight accounted for by the repeat unit (c) represented by Formula 3 in the thermoplastic polyester elastomer resin.
A process for preparing a thermoplastic polyester elastomer resin, which comprises:
- (1-1) reacting a glycol component;
- a dicarboxylic acid component;
- and a high molecular weight glycol component to obtain a reactant;
- and
- (1-2) subjecting the reactant to a polycondensation reaction,
- wherein the thermoplastic polyester elastomer resin comprises a repeat unit (a) represented by the following Formula 1;
- a repeat unit (b) represented by the following Formula 2;
- and a repeat unit (c) represented by the following Formula 3, and satisfies the following Relationship 1:
- 0.3
- ≤
- y
- /
- z
- ≤
- 3
-
- 5
- [
- Relationship
-
- 1
- ]
- in Formulae 1 to 3, R1 to R3 are each independently a C1 to C12 linear, branched, or cyclic divalent aliphatic hydrocarbon group;
- or a C6 to C12 divalent aromatic hydrocarbon group, m is an integer of 2 to 6, n is an integer of 4 to 6, p is an integer of 10 to 30, t is an integer of 1 to 30, and s is an integer of 1 to 40, and
- in Relationship 1, y is the weight accounted for by the repeat unit (b) represented by Formula 2 in the thermoplastic polyester elastomer resin, and z is the weight accounted for by the repeat unit (c) represented by Formula 3 in the thermoplastic polyester elastomer resin.
(canceled)
Dependencies are inferred from the claim text.