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Bio-based polyurethane microporous elastomer, preparation method and application thereof

A microporous elastomer, bio-based technology, applied in applications, shoe soles, clothing, etc., can solve the problems of poor physical properties of polyurethane materials, and achieve the effects of low cost, rich raw material sources, and reduced consumption

Active Publication Date: 2013-07-03
ZHEJIANG HUAFON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above documents and patents mainly convert vegetable oil or plant fiber into macromolecular polyether or polyester polyol, and then use these macromolecular polyols to react with isocyanate to prepare polyurethane materials, but the polyurethane materials prepared by this method have poor physical properties , can only be applied to walls or insulation materials with relatively low requirements on physical properties

Method used

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  • Bio-based polyurethane microporous elastomer, preparation method and application thereof
  • Bio-based polyurethane microporous elastomer, preparation method and application thereof
  • Bio-based polyurethane microporous elastomer, preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0054] In a heatable reaction vessel equipped with a distillation column and conical distillation receiver, 6.9 kg of bio-based succinic acid and 5.9 kg of bio-based sebacic acid were added, followed by 3.6 kg of bio-based ethylene glycol and 3.6 kg of For bio-based 1,3-propanediol, turn on the stirring device and the nitrogen atmosphere protection device and raise the temperature to 140°C. During the reaction, the product water is removed by distillation. At this time, the acid value is about 40mgKOH / g. Then add 2.2g of catalyst tetraisopropyl titanate TIPT, lower the pressure to 10-15mbar, raise the temperature to about 220°C, continue the polycondensation reaction, and remove the product water by distillation during the reaction process. Measure the hydroxyl value and acid value of the mixture in the reaction vessel. When the hydroxyl value reaches 56mgKOH / g and the acid value reaches about 0.4mgKOH / g, cool the reaction vessel, lower the temperature to room temperature, and ...

Embodiment 2

[0056] In a heatable reaction vessel equipped with a distillation column and conical distillation receiver, 7.1 kg of bio-based succinic acid and 6.1 kg of bio-based sebacic acid were added, followed by 4.6 kg of bio-based ethylene glycol and 2.3 kg of For bio-based 1,2-propanediol, turn on the stirring device and the nitrogen atmosphere protection device and raise the temperature to 180°C. During the reaction, the product water is removed by distillation. At this time, the acid value is about 35mgKOH / g. Then add 2.0g of catalyst tetraisopropyl titanate TIPT, lower the pressure to 10-15mbar, raise the temperature to about 230°C, continue the polycondensation reaction, and remove the product water by distillation during the reaction process. Measure the hydroxyl value and acid value of the mixture in the reaction vessel. When the hydroxyl value reaches 28mgKOH / g and the acid value reaches about 0.4mgKOH / g, cool the reaction vessel, lower the temperature to room temperature, and ...

Embodiment 3

[0058] In a heatable reaction vessel equipped with a distillation column and conical distillation receiver, 6.6 kg of bio-based succinic acid and 5.6 kg of bio-based sebacic acid were added, followed by 2.6 kg of bio-based ethylene glycol and 5.2 kg of For bio-based 1,3-propanediol, turn on the stirring device and the nitrogen atmosphere protection device and raise the temperature to 160°C. During the reaction process, the product water is removed by distillation. At this time, the acid value is about 45mgKOH / g. Then add 2.2g of catalyst tetraisopropyl titanate TIPT, reduce the pressure to 10-15mbar, raise the temperature to about 240°C, continue the polycondensation reaction, and remove the product water by distillation during the reaction process. Measure the hydroxyl value and acid value of the mixture in the reaction vessel. When the hydroxyl value reaches 112.2mgKOH / g and the acid value reaches about 0.4mgKOH / g, cool the reaction vessel, lower the temperature to room tempe...

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Abstract

The invention provides a bio-based polyurethane microporous elastomer, a preparation method and application thereof, wherein the bio-based polyurethane microporous elastomer is a reaction product of a polyurethane resin A component and a polyurethane resin B component; the polyurethane resin A component is composed of following components in parts by weight: 100 parts of bio-based polyester polyol, 0.2-4 parts of catalyst, 0.1-3 parts of foaming agent, 0-3 parts of foam stabilizer silicone oil and 1-40 parts of bio-based chain extender; the polyurethane resin B component is a reaction productof bio-based polyester polyol and diisocyanate, in which the weight parts are as follows: 100 parts of diisocyanate and 34-92 parts of bio-based polyester polyol. The bio-based polyurethane microporous elastomer has rich material source, so that the cost is low; the physical and mechanical properties of the polyurethane microporous elastomer such as molding density, tensile strength and so on cansatisfy the demand of the normal polyurethane sole, so that the elastomer can be used for producing polyurethane soles without pollution; and the product is biodegradable after being abandoned, so asto not to damage environment.

Description

technical field [0001] The invention relates to a bio-based polyurethane microporous elastomer and its preparation method and application. Background technique [0002] The full name of polyurethane is polyurethane, which is a general term for macromolecular compounds containing repeated urethane groups on the main chain. It is a polymer compound obtained by the interaction of binary or polyvalent organic isocyanates and polyol compounds. According to its physical properties and uses, polyurethane can generally be divided into rigid polyurethane foam, flexible polyurethane foam, polyurethane elastomer and polyurethane coating. Due to its excellent performance, polyurethane is widely used in many fields such as construction, automobile, light industry, textile, petrochemical and so on. It is an emerging organic polymer material and is known as the "fifth largest plastic". [0003] Compared with ordinary shoe soles, shoe soles made of polyurethane microcellular elastomers hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/42C08G63/16C08J9/08C08J9/14C08L75/06A43B13/04C08G101/00
Inventor 朱彦温文宪郝智平刘旭章海飞金美金
Owner ZHEJIANG HUAFON NEW MATERIALS CO LTD