A kind of self-crosslinking water-based photocuring polyurethane and its preparation method and application

A photocuring and self-crosslinking technology, applied in the field of photocuring, can solve the problems of limited photoinitiation efficiency, limited degree of crosslinking and curing, and few double bond molecules, and achieve the effect of enhancing initiation efficiency, fast curing speed, and improving curing rate.
CN110835397BActive Publication Date: 2021-12-31JIANGSU BIOSURF BIOTECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU BIOSURF BIOTECH CO LTD
Publication Date
2021-12-31

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Abstract

The invention relates to a self-crosslinking water-based photocurable polyurethane and its preparation method and application. The polyurethane is mainly obtained by reacting components including polyols and isocyanates, and the polyols include unsaturated polyols containing tertiary amino groups and carbon-carbon double bonds, polyols containing photosensitive groups, polypolyols and carboxyl-containing polyols. alcohol. The polyurethane contains carbon-carbon double bonds and photosensitive groups at the same time, and can be spontaneously polymerized and cross-linked and cured under ultraviolet light irradiation without adding a photoinitiator. The structural design of the polyurethane of the present invention is relatively flexible, and the overall chemical structure and the composition of each unit can be adjusted according to requirements, so as to obtain a polyurethane coating film with excellent performance.
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Description

technical field

[0001] The invention belongs to the field of photocuring technology, and more specifically, the invention relates to self-crosslinking water-based photocuring polyurethane. Background technique

[0002] Ultraviolet light curing technology is a process technology that takes into account both environmental and economic benefits. Compared with traditional curing technology, it has the characteristics of short curing time, simple equipment, excellent coating performance, and environmental friendliness. It is widely used in aerospace, electronics, etc. , medical and health and other fields have been widely used. Among them, as a typical representative of the application of this technology, UV-curable coatings such as photo-curable polyurethane have the characteristics of low energy consumption, fast curing speed, and excellent coating performance, so they have achieved rapid development. Among them, water-based UV-curable polyurethane has the advantages of no pol...

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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