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A kind of preparation method of polymer polyol with low odor and high weather resistance

A polymer and polyol technology, which is applied in the field of preparation of environmentally friendly, low-odor and bioactive polymer polyols, can solve the problems of unstable chemical properties, easy to block vacuum pipelines, and high toxicity.

Active Publication Date: 2021-03-09
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is a problem that is difficult to solve completely in the preparation process of polymer polyol: it will produce unpleasant smell
[0005] However, there are various deficiencies in the above-mentioned processes, such as high risk factor of peroxide initiator, unstable chemical properties, harsh storage conditions, high acid value of products caused by decomposition products, and strict requirements on operating and control conditions. , it is very easy to cause fouling of the reactor wall and the generation of product particles
At the same time, the decomposition product of azobisisobutyronitrile used is tetramethylsuccinonitrile, which is highly toxic. At present, the European Union has clearly banned this substance from being used in the production of polymerized polyols
In addition, it is very easy to block the vacuum pipeline, and the cleaning and disposal will cause great pressure on environmental protection and high cost

Method used

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  • A kind of preparation method of polymer polyol with low odor and high weather resistance
  • A kind of preparation method of polymer polyol with low odor and high weather resistance
  • A kind of preparation method of polymer polyol with low odor and high weather resistance

Examples

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Effect test

Embodiment example 1

[0033] In a 1000mL three-neck flask, put 2 parts of macromers and 22.5 parts of basic polyether polyols at the bottom of the kettle, and mix them thoroughly after nitrogen replacement. The internal temperature is controlled at about 100°C. The mixture of ethylene, 16 parts of acrylonitrile, 30 parts of basic polyether polyol, 4.5 parts of isopropanol and 0.5 part of azobisisobutyrate was added dropwise within 120 minutes. When the dimethyl diacid reaches 500ppm, add 0.5 part of titanate to the top material, mix it with the top material and add it to the reaction system together. After the addition is completed, raise the temperature to 120°C and perform aging for 1 hour to obtain a multi-component polymer. Alcohol reaction solution A1.

Embodiment example 2

[0035] In a 1000mL three-necked flask, put 5 parts of macromers and 19.5 parts of basic polyether polyols at the bottom of the kettle, and mix them thoroughly after nitrogen replacement. A mixture of ethylene, 16 parts of acrylonitrile, 30 parts of basic polyether polyol, 4.5 parts of isopropanol and 5 parts of azobisisobutyrate. During the dropping of the top material, the drop is completed within 120 minutes. When the dimethyl diacid reaches 600ppm, add 0.5 parts of titanate to the top material, mix with the top material and add to the reaction system together. After the addition is completed, the temperature is raised to 120°C, and aging is carried out for 1 hour to obtain a multi-component polymer. Alcohol reaction solution A2.

Embodiment example 3

[0037] In a 1000mL three-neck flask, 8 parts of macromers and 14 parts of basic polyether polyols were placed at the bottom of the kettle. After nitrogen replacement, they were fully mixed, and the internal temperature was controlled at about 100°C. From the top of the kettle, 24 parts of styrene were added. , a mixture of 16 parts of acrylonitrile, 30 parts of basic polyether polyol, 4.5 parts of isopropanol and 3 parts of azobisisobutyrate, during the dropping of toppings, when dimethyl tetramethylsuccinate reaches 800ppm 0.5 parts of titanates are added to the top material, mixed with the top material and added to the reaction system together. After the drop is completed, the drop is completed within 120 minutes, the temperature is raised to 120 ° C, and aging is carried out for 1 hour to obtain a polymer polyol Reaction solution A3.

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Abstract

The invention relates to a method for preparing a polymer polyol with low odor and high weather resistance. During the preparation process of the polymer polyol, titanate compounds are added to prepare a method for preparing the polymer polyol with low odor and high weather resistance. And the prepared polymer polyol has lower viscosity and higher stability.

Description

technical field [0001] The invention relates to the preparation of polymer polyols, in particular to a preparation method of environment-friendly, low-odor and biologically active polymer polyols. Background technique [0002] Polymer polyols, also known as polymer grafted polyether polyols, are an important variety of polyols used in polyurethane foams. The initial development of polymer polyols is based on two considerations: First, the use of vinyl monomers for polyether polyols Modification and filling to reduce costs: Second, it is used in soft foam formulations to improve the load-bearing performance of foam plastics. [0003] However, there is a problem that is difficult to solve completely in the preparation process of polymer polyol: it will produce unpleasant smell. The reason is mainly derived from the decomposition products of the initiator. However, the products produced with polymer polyols are closely related to people's lives, so it is very necessary to redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F212/08C08F220/44C08F8/14
CPCC08F8/14C08F283/06C08F212/08
Inventor 刘洋鞠昌迅李付国刘斌张秀秀黎源
Owner WANHUA CHEM GRP CO LTD