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A kind of vinyl benzophenone macromolecular photoinitiator and preparation method thereof

A technology of p-hydroxybenzophenone and vinyl acetate resin, applied in the field of benzophenone macromolecular photoinitiator and its preparation, can solve the problems of poor system compatibility, low performance photoinitiation efficiency, and high surface mobility , to achieve good adhesion, excellent color development, and reduce surface migration

Active Publication Date: 2021-07-02
CHANGZHOU GREEN PHOTOSENSITIVE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned problems of low photoinitiation efficiency of traditional small molecule photoinitiation performance, poor compatibility with the system, and high surface mobility

Method used

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  • A kind of vinyl benzophenone macromolecular photoinitiator and preparation method thereof
  • A kind of vinyl benzophenone macromolecular photoinitiator and preparation method thereof
  • A kind of vinyl benzophenone macromolecular photoinitiator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (a) 4.5 parts of MDI and 2 parts of tin isooctoate are dissolved in 40 parts of ethyl acetate, and 2 parts of N-methyldiethanolamine are dissolved in 20 parts of ethyl acetate and added to the constant pressure dropping funnel, controlled The dropping speed is 4-5s / drop, and after magnetic stirring at room temperature for 4 hours, the reaction is stopped when the hydroxyl group disappears by infrared detection, and the ethyl acetate solution of the intermediate product PU-1 is obtained.

[0027] (b) Dissolve 1.7 parts of p-hydroxybenzophenone in 20 parts of ethyl acetate and add it to the constant pressure dropping funnel, control the dropping speed of 4-5s / drop, and add dropwise to the acetic acid of the completely dissolved PU-1 In the ethyl ester solution, the molar ratio of PU-1 to p-hydroxybenzophenone is 1:1. After the dripping, continue to stir magnetically for 0.5h, and then use a constant pressure dropping funnel to continue dripping 1 part of hydroxy ternary 1...

Embodiment 2

[0029] (a) 4 parts of TDI, 2 parts of stannous octoate are dissolved in 40 parts of ethyl acetate, 2 parts of N-methyldiethanolamine are dissolved in 20 parts of ethyl acetate and join in the constant pressure dropping funnel, control The dropping speed is 4-5s / drop, and after magnetic stirring at room temperature for 2 hours, the infrared detection detects that the hydroxyl group disappears and the reaction is stopped, and the ethyl acetate solution of the intermediate product PU-1 is obtained.

[0030] (b) Dissolve 1.5 parts of p-hydroxybenzophenone in 20 parts of ethyl acetate and add it to the constant pressure dropping funnel, control the dropping speed of 4-5s / drop, and add dropwise to the acetic acid of the completely dissolved PU-1 In the ethyl ester solution, the molar ratio of PU-1 to p-hydroxybenzophenone is 1:1. After the dripping, continue to stir magnetically for 0.5h, and then use a constant pressure dropping funnel to continue dripping 1 part of hydroxy ternary ...

Embodiment 3

[0032] (a) Dissolve 4.5 parts of HDI and 2 parts of dibutyltin dilaurate in 40 parts of ethyl acetate, 2 parts of N-methyldiethanolamine in 20 parts of ethyl acetate and add them to the constant pressure dropping funnel , control the dropping speed to 4-5s / drop, and stir magnetically at room temperature for 3 hours, and stop the reaction when the hydroxyl group disappears by infrared detection, and obtain the ethyl acetate solution of the intermediate product PU-1.

[0033] (b) Dissolve 1.6 parts of p-hydroxybenzophenone in 20 parts of ethyl acetate and add it to the constant pressure dropping funnel, control the dropping speed of 4-5s / drop, and add dropwise to the acetic acid of the completely dissolved PU-1 In the ethyl ester solution, the molar ratio of PU-1 to p-hydroxybenzophenone is 1:1. After the dripping, continue to stir magnetically for 0.5h, and then use a constant pressure dropping funnel to continue dripping 1 part of hydroxy ternary 10 parts of ethyl acetate solu...

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Abstract

The invention relates to a vinyl benzophenone macromolecular photoinitiator and a preparation method thereof. The preparation method uses N-methyldiethanolamine and diisocyanate to synthesize an isocyanate-terminated product containing a carbamate structure. The intermediate PU‑1, reacting PU‑1 with hydroxy tribasic chloroacetic resin and p-hydroxybenzophenone in turn to obtain the target product PV‑PU. This macromolecular photoinitiator that the present invention makes, its general structural formula is as (I), because contain benzophenone and tertiary amine structure simultaneously on the same molecular chain, can improve photosensitive decomposition and produce active species efficiency, again because It also contains vinyl chloride and polyurethane structure, which not only increases the compatibility with the initiator system, greatly reduces the surface migration of photoinitiators, but also has excellent color development for pigments and good adhesion to substrates, and can be used as a chlorine Vinegar resin is used as a special functional material, and it can be widely used in UV light curing, wood varnish, PVC substrate, ink printing and other fields.

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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/48C08G18/65C08G18/62C08G18/32C08F283/10C08F283/01C08F283/00C08F220/18C08F220/32C08F222/14C08F222/20C08F2/44C08K3/26
CPCC08F2/44C08F2/48C08F283/008C08F283/01C08F283/105C08G18/3215C08G18/3275C08G18/6275C08K3/26C08K2003/265
Inventor 张玉贞华叶莹
Owner CHANGZHOU GREEN PHOTOSENSITIVE MATERIALS CO LTD
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