Preparation method of non-isocyanate polyurethane and application of non-isocyanate polyurethane in spraying polyurea

A non-isocyanate and polyurethane technology, applied in the field of organic polymer materials, can solve the problems of high-pollution polyisocyanate pollution, high cost of amino-terminated polyether, and inconvenient application and development, and achieve low cost, excellent hydrolysis resistance, and reduced use The effect of isocyanate
CN102718964AInactive Publication Date: 2012-10-10GUANGXI UNIV FOR NATITIES
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGXI UNIV FOR NATITIES
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of non-isocyanate polyurethane and application of the non-isocyanate polyurethane in spraying polyurea. The preparation method of the non-isocyanate polyurethane comprises the following steps: (1) preparing a polyether diol diglycidyl ether intermediate; (2) preparing a heterogeneous loaded potassium carbonate and potassium iodide catalyst; (3) preparing polyether bicyclo carbonate; and (4) preparing the non-isocyanate polyurethane product. The invention has the advantages as follows: 1, the preparation method is low in energy consumption, free of pollution and low in cost and has a concept of environment friendliness, low-carbon economy and atomic economy; and 2. the prepared non-isocyanate polyurethane, as a amine resin for the spraying polyurea, has better chemical resistance, hydrolysis resistance and the penetration resistance and is superior to amino-terminated polyether in adhesion to substrate and leveling property.
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Description

technical field

[0001] The invention belongs to the field of organic polymer materials, in particular to the preparation of non-isocyanate polyurethane and its application in spraying polyurea. Background technique

[0002] Polyurethane plays a pivotal role in industry and life. At present, polyurethane coatings are mostly prepared by the reaction of polyisocyanate and polyol. However, highly toxic isocyanate materials are used in the preparation, and phosgene, a raw material for preparing polyisocyanates, is more toxic, which brings harm to human health and the environment.

[0003] Non-isocyanate polyurethane not only does not use highly toxic and moisture-sensitive polyisocyanate in the preparation process, but also makes up for the weak bond structure in traditional polyurethane from the molecular structure, and has excellent chemical resistance, hydrolysis resistance and permeability resistance. . With the promotion of "clean production process", non-isocyanate polyur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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