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Waste polyurethane foam aminolysis recycling method

A foam aminolysis and polyurethane technology, applied in the field of polyurethane, can solve the problems of polyurethane foam pollution and other problems, and achieve the effect of good strength and good dimensional stability

Inactive Publication Date: 2013-04-03
绍兴广佳庄鑫建材制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies of the prior art, and provide a waste polyurethane foam aminolysis recycling method, which decomposes waste polyurethane products through chemical recovery methods and processes and utilizes them, so as to solve the pollution problem caused by polyurethane foam to the environment. Decompose polyurethane rigid foam, semi-rigid foam, soft foam, and elastomer produced during the production of polyurethane foam, and recycle them to achieve the purpose of "turning waste into treasure" to reduce costs and increase efficiency

Method used

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  • Waste polyurethane foam aminolysis recycling method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: A method for recycling waste polyurethane foam by aminolysis, adding 500 grams of triethanolamine to a 1500 ml three-necked bottle with a stirring, heating and temperature control device, and adding 2.5 grams of tetrabutyl titanate, heating After reaching 150-250°C, cut 500 grams of recycled polyurethane waste (hard polyurethane foam) into small pieces, slowly add it to triethanolamine, and stir while heating. After about 12 hours, all the foam will dissolve, and the vacuum will remove the low After 30 minutes, 940 g of recovered product A was obtained.

Embodiment 2

[0020] Example 2: A method for recycling waste polyurethane foam by aminolysis. The recyclate obtained in Example 1 and A obtained above was formulated into a combined polyether for rigid polyurethane foam and a foaming test was carried out. The results are shown in Table 1.

[0021] Table one: embodiment 2 test result

[0022]

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Abstract

The invention relates to a waste polyurethane foam aminolysis recycling method, which comprises: a, removing surface attachments of waste polyurethane products; b, carrying out cutting or mechanical crushing on the surface attachment-removed waste polyurethane products into small blocks; c, preparing a mixture of regeneration polyol and aromatic amine; and d, preparing the mixture of the regeneration polyol and the aromatic amine into combination polyether for hard foam, and carrying out foaming. According to the present invention, a chemical recovery method is adopted to decompose waste polyurethane products, and processing utilization is performed, such that an environment pollution problem caused by the polyurethane foam is solved.

Description

Technical field: [0001] The invention relates to the technical field of polyurethane, and more specifically relates to the aminolysis recovery and utilization method of waste polyurethane products produced in the production of polyurethane chemical industry and polyurethane products. Background technique: [0002] The recycling of polyurethane products has been paid more and more attention by the world government. In the United States, it is promoted by the Polyurethane Recycling Committee (PURRC) set up by the Polyurethane Branch of the American Plastics Industry Association (SPI); in Japan, it is promoted by the Japan Polyurethane Industry Association (PUII) , Polyurethane Raw Material Industry Association and Foam Industry Association jointly promote; in Europe, it is jointly promoted by the European Isocyanate Association (ISOPA) and the European Chemical Industry Association. [0003] At present, polyurethane materials in my country have been widely used in various indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/28C08L75/08
CPCY02W30/62
Inventor 山柏芳傅东海李志生唐江
Owner 绍兴广佳庄鑫建材制造有限公司
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