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

Active Publication Date: 2019-12-27
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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  • Vinyl chloride-vinyl acetate resin-based benzophenone macromolecular photoinitiator and preparation method thereof
  • Vinyl chloride-vinyl acetate resin-based benzophenone macromolecular photoinitiator and preparation method thereof
  • Vinyl chloride-vinyl acetate resin-based 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 magnetic stirring for 0.5h, and then use a constant pressure dropping funnel to continue dropping 1 part of hydroxy ternary 10 parts of ethyl acetate solutio...

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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.

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 Applications(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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