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Preparation method of green and environment-friendly polyether polyurethane material

A polyether polyurethane, green and environmental protection technology, applied in the field of polyurethane, can solve the problems of reducing the flexibility of the molecular chain, high price, many solvents, etc., and achieve the effect of abundant stock and low price

Pending Publication Date: 2022-05-20
杭州金波医药科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of polyether-polyester block copolymers requires many solvents, consumes a lot of energy, and has low yields.
More seriously, the introduction of polyester blocks at the end of the polyether chain will reduce the flexibility of the molecular chain, thereby affecting the properties of polyurethane such as high elasticity
On the other hand, special isofluranes and chain extenders with ester bonds / acetals need to undergo multi-step small molecule reactions to obtain, which is cumbersome and expensive, and is not suitable for large-scale production

Method used

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Examples

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Embodiment 1

[0036] Such as figure 1 As shown, the embodiment of the present invention provides a kind of manufacturing method of the polyether type polyurethane material of environment-friendly type, comprises the following steps:

[0037] Treat the raw materials of polyether polyurethane materials, and weigh 20 parts of isocyanate, 10 parts of light calcium carbonate, 15 parts of acetone, 10 parts of attapulgite, 1 part of catalyst, 1 part of stabilizer, deionized water Appropriate amount, reserve;

[0038] The processing step of described light calcium carbonate is as follows:

[0039] Preliminary screening of coarse light calcium carbonate to remove impurities and larger particles;

[0040] Grinding the light calcium carbonate after screening;

[0041] The ground light calcium carbonate is sieved to obtain a particle size of 400-500 mesh.

[0042] The processing step of described attapulgite is as follows:

[0043] mixing attapulgite with deionized water equivalent to 8-10 times t...

Embodiment 2

[0057] Such as figure 1 As shown, the embodiment of the present invention provides a kind of manufacturing method of the polyether type polyurethane material of environment-friendly type, comprises the following steps:

[0058] Treat the raw materials of polyether polyurethane materials, and weigh 25 parts of isocyanate, 13 parts of light calcium carbonate, 18 parts of acetone, 13 parts of attapulgite, 3 parts of catalyst, 3 parts of stabilizer, deionized water Appropriate amount, reserve;

[0059] The processing step of described light calcium carbonate is as follows:

[0060] Preliminary screening of coarse light calcium carbonate to remove impurities and larger particles;

[0061] Grinding the light calcium carbonate after screening;

[0062] The ground light calcium carbonate is sieved to obtain a particle size of 400-500 mesh.

[0063] The processing step of described attapulgite is as follows:

[0064] mixing attapulgite with deionized water equivalent to 8-10 times...

Embodiment 3

[0078] Such as figure 1 As shown, the embodiment of the present invention provides a kind of manufacturing method of the polyether type polyurethane material of environment-friendly type, comprises the following steps:

[0079] Process the raw materials of polyether polyurethane materials, and weigh 30 parts of isocyanate, 16 parts of light calcium carbonate, 20 parts of acetone, 16 parts of attapulgite, 5 parts of catalyst, 5 parts of stabilizer, deionized water Appropriate amount, reserve;

[0080] The processing step of described light calcium carbonate is as follows:

[0081] Preliminary screening of coarse light calcium carbonate to remove impurities and larger particles;

[0082] Grinding the light calcium carbonate after screening;

[0083] The ground light calcium carbonate is sieved to obtain a particle size of 400-500 mesh.

[0084] The processing step of described attapulgite is as follows:

[0085] mixing attapulgite with deionized water equivalent to 8-10 tim...

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Abstract

The invention belongs to the technical field of polyurethane, and discloses a preparation method of a green and environment-friendly polyether polyurethane material, the raw materials of the material are mainly composed of isocyanate, light calcium carbonate, acetone and attapulgite, the isocyanate is easy to react with compounds containing reactive hydrogen atoms: amine, water, alcohol, acid and alkali, and the light calcium carbonate is easy to react with the attapulgite. The light calcium carbonate reacts with all strong acids to generate water and corresponding calcium salts, acetone is miscible with water and can be miscible with most organic solvents such as ethanol, diethyl ether, chloroform, oils, hydrocarbons and the like, degradation of polyether polyurethane is facilitated, attapulgite minerals are abundant in stock in nature, the raw materials are simple and easy to obtain, the price is low, and the method is suitable for industrial production. The stock in the nature is abundant, and the green and environment-friendly concept is met; compared with a method for introducing ester bonds or acetal into isocyanate or a micromolecule chain extender, the degradable polyurethane prepared by the method disclosed by the invention does not need an additional micromolecule pre-synthesis step.

Description

technical field [0001] The invention belongs to the technical field of polyurethane, and more specifically relates to a method for making a green and environment-friendly polyether polyurethane material. Background technique [0002] The vast majority of polyurethanes currently used are non-degradable under natural conditions, and it is difficult to recycle them. Many countries in the world have legislated to restrict the use of disposable non-degradable plastics, which has greatly promoted the research and development of degradable polyurethane technology. [0003] The development of degradable polyurethane can be divided into several stages such as blending with natural materials, blending after modification, copolymerization with natural materials, and molecular chain design according to the chronological order and the degree of technological development. Molecular chain design is a method of preparing degradable polyurethane by degradable design of the soft segment (pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08K3/26C08K3/34C08K9/04
CPCC08K3/26C08K3/346C08K9/04C08K2003/265C08L75/08Y02P20/10
Inventor 黄迪
Owner 杭州金波医药科技有限公司
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