Polyester polyol as well as preparation method and application

A polyester polyol and polyol technology, applied in the field of polyurethane materials, can solve the problems of long synthesis steps, product flexibility, low temperature resistance and mechanical properties, and increase the difficulty of synthesis process control, so as to improve hardness and synthesis Simple method, convenient and efficient synthetic route
CN110724249AActive Publication Date: 2020-01-24WANHUA CHEM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WANHUA CHEM GRP CO LTD
Publication Date
2020-01-24

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Abstract

The invention discloses polyester polyol as well as a preparation method and application. The polyester polyol is prepared from the following components in parts by mass through a condensation polymerization reaction: A) 100 parts of dibasic acid or derivatives thereof; B) 50-500 parts of polyol containing a double bond; and C) 0-200 parts of small molecule dibasic alcohol without a double bond. The preparation method for the polyester polyol is used for preparing through a conventional condensation polymerization reaction. The invention further provides application of the polyester polyol topreparation of photocurable polyurethane resin. The polyester polyol disclosed by the invention has the technical advantages that the polyester polyol has relatively high content of double bond; and all performance of the photocurable polyurethane resin can be improved and the dosage of active monomer acrylates can be reduced or acrylates are not added into a resin system in a resin preparation process, so that the influences on the performance of the resin, caused by the acrylates, are reduced.
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Description

technical field

[0001] The invention relates to a polyester polyol, in particular to a polyester polyol, a preparation method and application, and belongs to the technical field of polyurethane materials. Background technique

[0002] Urethane acrylate is an important class of photocurable cross-linked polyurethane resin. It is based on polyurethane, and the end of the molecular chain introduces double bonds through acrylation. bond crosslinking reaction. Its molecular structure mainly includes a urethane segment, a polyol main chain, and an acrylate hydroxyalkyl ester segment, and the curing characteristics are determined by the acrylate located in the segment. Urethane acrylates combine the advantages of both acrylic and polyurethane resins.

[0003] The polymerizable double bonds of urethane acrylate oligomers are generally located at the end of the molecular chain. In order to increase the double bond content of photocurable urethane acrylate, improve the curing rate a...

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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