Polyether polyamide elastomer

A technology of polyamide elastomer and polyether type, which is applied in the field of polyether type polyamide elastomer, which can solve the problems of poor transparency and achieve the effects of excellent impact resistance and low temperature flexibility

Inactive Publication Date: 2009-07-01
UBE IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since PTMG is crystalline, the transparency is also poor

Method used

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  • Polyether polyamide elastomer
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Examples

Experimental program
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Effect test

Embodiment

[0145] Now, the present invention will be described below with reference to Examples and Comparative Examples. However, the present invention is not limited to these Examples.

[0146] Physical properties were measured in the following manner.

[0147] 1) Relative viscosity (ηr) (0.5 wt / vol% m-cresol solution, 25°C):

[0148] The Ostwald viscometer measures the concentration in the special grade reagent m-cresol as a solvent to be 5g / dm 3 Relative viscosity at time.

[0149] 2) Terminal carboxyl group concentration ([COOH]):

[0150] To about 1 g of the polymer was added 40 mL of benzyl alcohol, and the resulting mixture was heated under nitrogen to dissolve the polymer. To the obtained sample solution was added phenolphthalein as an indicator, and the solution was titrated using an N / 20 potassium hydroxide-ethanol solution.

[0151] 3) Terminal amino concentration ([NH 2 ]):

[0152] About 1 g of the polymer was dissolved in 40 mL of a mixed solution of phenol and meth...

preparation Embodiment 1

[0176] Preparation Example 1: Preparation of PAE1

[0177] In a 70 L pressure vessel equipped with a stirrer, thermometer, torque gauge, pressure gauge, nitrogen inlet, pressure controller and polymer outlet, 14.000 kg of 12-aminododecanoic acid produced by UBE Industries Ltd., 0.986 kg Adipic acid of 4.628 kg of XYX type triblock polyether diamine (XTJ-542, produced by Huntsman Corp., total amine: 1.94 meq / g), 0.384 kg of isophorone diamine (product Name: VESTAMINIPD, manufactured by Degussa Japan Co., Ltd.), 6 g of sodium hypophosphite monohydrate, and 60 g of a heat-resistant agent (Tominox 917, manufactured by Yoshitomi Pharmaceutical Co., Ltd.). The gas inside the container was completely replaced with nitrogen. Then, while nitrogen gas was supplied at a rate of 186 liters / hour and the pressure inside the container was adjusted to 0.05 MPa, the container was heated from room temperature to 230° C. over 3.5 hours. While maintaining the pressure inside the vessel at 0.05 ...

preparation Embodiment 2

[0179] Preparation Example 2: Preparation of PAE2

[0180] In a 70 L pressure vessel equipped with a stirrer, thermometer, torque gauge, pressure gauge, nitrogen inlet, pressure controller and polymer outlet, 12.292 kg of 12-aminododecanoic acid produced by UBE Industries Co., Ltd., 1.246 kg Adipic acid, 6.000kg of XYX type triblock polyether diamine (XTJ-542, produced by Huntsman company, total amine: 1.94meq / g), 0.462kg of isophorone diamine (product name : VESTAMIN IPD, produced by Degussa Japan Co., Ltd.), 6 g of sodium hypophosphite monohydrate, and 60 g of a heat-resistant agent (Tominox 917, produced by Yoshitomi Pharmaceutical Co., Ltd.). The gas inside the container was completely replaced with nitrogen. Then, while nitrogen gas was supplied at a rate of 186 liters / hour and the pressure inside the container was adjusted to 0.05 MPa, the container was heated from room temperature to 230° C. over 3.5 hours. While maintaining the pressure inside the vessel at 0.05 MPa,...

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Abstract

Disclosed is a polyether polyamide elastomer particularly excellent in transparency while retaining properties such as dynamic physical properties, stiffness and resistance to fatigue from flexing. The polyether polyamide elastomer can be produced by polymerizing (A) a polyamide-forming monomer selected from (A1) an aminocarboxylic acid compound represented by the formula (1) and (A2) a lactam compound represented by the formula (2), (B) a diamine compound comprising (B1) a triblock polyether diamine compound represented by the formula (3) and (B2) at least one diamine compound selected from a branched saturated diamine having 6 to 22 carbon atoms, a branched alicyclic diamine having 6 to 16 carbon atoms and norbornanediamine, and (C) a dicarboxylic acid compound represented by the formula (4) with one another. H2N-R-COOH (1) wherein R represents a linking group having a hydrocarbon chain. (2) wherein R represents a linking group having a hydrocarbon chain. (3) wherein x represents a number ranging from 1 to 20, y represents a number ranging from 4 to 50, and z represents a number ranging from 1 to 20. HOOC-(R)m-COOH (4) wherein R represents a linking group having a hydrocarbon chain, and m represents 0 or 1.

Description

technical field [0001] The present invention relates to a polyether polyamide elastomer excellent in transparency, the polyether polyamide elastomer has a polyamide hard segment and a polyether soft segment. More specifically, the present invention relates to a thermoplastic elastomer that is particularly excellent in transparency while maintaining important practical properties of thermoplastic elastomers, such as melt moldability, low-temperature impact resistance, low-temperature flexibility, dynamic physical properties, stiffness, and bending fatigue resistance. and other polyether polyamide elastomers. Background technique [0002] Patent Documents 1 and 2 disclose a polyether-type polyamide elastomer comprising polyamide units, polyethylene oxide units, and dicarboxylic acid units. [0003] However, since a polyether polyamide elastomer comprising polyamide units, polyethylene oxide units, and dicarboxylic acid units exhibits high water absorption, it is used outdoors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/40B32B27/00B32B25/08
CPCB32B27/08B32B27/34C08G69/40B32B27/40B32B2437/02Y10T428/31562Y10T428/31725B32B27/00C08G65/325B32B25/08
Inventor 奥下洋司田中章一
Owner UBE IND LTD
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