Vinyl chloride-vinyl acetate resin-based benzophenone macromolecular photoinitiator and preparation method thereof

A technology of p-hydroxybenzophenone and chloroacetate resin is applied in the field of benzophenone macromolecular photoinitiator and its preparation, and can solve the problems of high surface mobility, poor system compatibility, low performance photoinitiation efficiency and the like , to achieve the effect of reducing surface migration, good adhesion and excellent color development
CN110615861AActive Publication Date: 2019-12-27CHANGZHOU GREEN PHOTOSENSITIVE MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU GREEN PHOTOSENSITIVE MATERIALS CO LTD
Publication Date
2019-12-27

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Abstract

The invention relates to a vinyl chloride-vinyl acetate resin-based benzophenone macromolecular photoinitiator and a preparation method thereof. The preparation method comprises the following steps: synthesizing an isocyanate-terminated intermediate PU-1 containing a carbamate structure from N-methyldiethanolamine and diisocyanate, and reacting the PU-1 with hydroxyl ternary vinyl chloride-vinyl acetate resin and p-hydroxybenzophenone in sequence to obtain the target product PV-PU. The macromolecular photoinitiator prepared by the preparation method has a general formula structure shown as formula (I) shown in the specification. The same molecular chain contains benzophenone and tertiary amine structures at the same time so that the efficiency of generating active species through photosensitive decomposition can be improved; meanwhile, the photoinitiator contains a vinyl chloride-vinyl acetate structure and a polyurethane structure so that compatibility with an initiating system is improved, surface migration of the photoinitiator is greatly reduced, the color developing property on pigment is excellent, the adhesive force on a substrate is good, and the photoinitiator can be usedas a special functional material for vinyl chloride-vinyl acetate resin and can be widely applied to the fields of UV photocuring, wood lacquer, PVC base materials, ink printing and the like.
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Description

technical field

[0001] The invention relates to a vinyl benzophenone macromolecular photoinitiator and a preparation method thereof. Background technique

[0002] UV curing technology is a representative start in the development of coatings, adhesives and inks. It is a new green technology that came out in the 1960s. It uses light (ultraviolet or visible light) as an energy source to trigger a chemical reaction. The rapid transformation of a liquid substance into a solid state. Compared with traditional solution molding, UV curing technology is summarized as having "5E" characteristics: Efficient, Enabling, Economical, Energysav-ing and Environmental friendly ). Photocuring systems usually include reactive monomers, prepolymers and photoinitiators. Under ultraviolet radiation, the photolysis reaction of the photoinitiator generates active species to initiate the polymerization of monomers and prepolymers. With the continuous development of science and technology and the ...

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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