Branched polyether ester elastomer material and preparation method thereof

A technology of ester elastomer and branched polyether, which is applied in the field of branched polyether ester elastomer materials and its preparation, to achieve the effects of favorable molding processing, high melt strength and strong fluidity

Active Publication Date: 2012-03-14
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

China CN 1480477A discloses a method for preparing a high-performance thermoplastic polyether ester elastomer with low hardness and high melting point, which contains short-chain polyester hard segments composed of dicarboxylic Polyether ester soft segment composed of alkylene ether glycol, this material has good comprehensive properties, but there are few reports on hyperbranched or crosslinked elastomers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 150g dimethyl terephthalate, 40g ethylene glycol, polyethylene glycol (molecular weight 1500g / mol) 10g and catalyst zinc acetate 0.2g are added in the polymerization kettle. (Note: this polymerization kettle is equipped with stirring device, nitrogen input device and fractionation device). The temperature was raised to 160°C, and the reaction was carried out for 4 hours until methanol no longer distilled out. In system, add pentaerythritol 2.3g, degree of branching regulator 2.5g (Ni(naph) 2 -BF 3 ·OEt 2 -Al(i-Bu) 3 The weight ratio with furan is 1.5: 1), antioxidant (168) 0.3g, antiaging agent UV-2340.2g, phosphite 0.1g, antiaging agent hexamethylphosphoric triamide 0.4g, temperature rises slowly to 230°C, the pressure was reduced to 0.01MPa, and the reaction was carried out for 1 hour. Subsequently, the temperature of the system was raised to 260° C., the pressure was lowered to 30 Pa, and the reaction was continued for 3 hours. Introduce nitrogen, increase the ...

Embodiment 2

[0042] 150g of dimethyl isophthalate, 200g of butanediol, 120g of polytetrahydrofuran ether glycol (molecular weight 2000g / mol) and 0.3g of catalyst calcium acetate cobalt were added in the polymerization kettle. (Note: this polymerization kettle is equipped with stirring device, nitrogen input device and fractionation device). The temperature was raised to 190 degrees, and the reaction was carried out for 4 hours until no methanol distilled out. In system, add xylitol 10.8g, degree of branching regulator 5.3g (Ni(naph) 2 -BF3 ·OEt 2 -Al(i-Bu) 3 The weight ratio with pyridine is 2:1), antioxidant (168) 1g, anti-aging agent UV-234 1g, phosphite 0.5g, temperature rose slowly to 230°C, pressure dropped to 0.01MPa, and reacted for 1 hour. Subsequently, the temperature of the system was raised to 260° C., the pressure was lowered to 30 Pa, and the reaction was continued for 3 hours. Introduce nitrogen, increase the pressure to 3MPa, discharge, draw strands, cool, pelletize, and...

Embodiment 3

[0044] 150g terephthalic acid, 150g ethylene glycol, polytetrahydrofuran ether glycol (molecular weight 2000g / mol) 150g and catalyst calcium acetate cobalt 0.5 are added in the polymerization kettle. (Note: this polymerization kettle is equipped with stirring device and nitrogen input device). The pressure was increased to 4MPa, the temperature was raised to 190°C, and the reaction was carried out for 2 hours. Add pentaerythritol 5.4g, branching degree regulator 3.0g (Ni(naph) 2 -BF 3 ·OEt 2 -Al(i-Bu) 3 The weight ratio with thiophene is 2.4: 1), antioxidant (168) 1g, antiaging agent hexamethylphosphoric triamide 1g, phosphite 0.5g, temperature rises slowly to 230 ℃, pressure drops to 0.01MPa, React for 1 hour. Subsequently, the temperature of the system was raised to 260° C., the pressure was lowered to 30 Pa, and the reaction was continued for 3 hours. Introduce nitrogen, increase the pressure to 3MPa, discharge, draw strands, cool, pelletize, and dry. The obtained co...

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Abstract

The invention relates to a branched polyether ester elastomer material and a preparation method thereof. The branched polyether ester elastomer material mainly comprises aromatic dicarboxylic acid dimethyl ester (or aromatic dicarboxylic acid, alfa, omega-aliphatic diol, polyether diol and polyol, wherein, the ingredient for branching is polyol. Compared with the prior art, the branched polyether ester elastomer material has special advantages of good hydrodynamic performance and easy film forming, the material is a Newtonian fluid and benefits for contour machining, and can be widely applied in membrane science.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a branched polyether ester elastomer material and a preparation method thereof. Background technique [0002] For more than 10 years, dendritic (branched) polymers have been used in many aspects of the biomedical field, from simple drug delivery carriers to complex medical imaging, including nanoscale biosensors, nanoscale catalysts, etc., dendritic Polymers have precise nanostructures, and their synthesis methods include divergent and convergent methods. The precise generations (or layers) and volume of the dendrimer are determined by the synthetic steps. The diameters of the dendrimers range from 10nm to 130nm from the G0 generation to the G10 generation, respectively. Different from ordinary polymers, dendrimers have the characteristics of low viscosity, high solubility, miscibility and high reactivity. At the same time, its volume and shape can also b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/78C08K5/524
Inventor 姚晨光
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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