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Sulfur-containing benzophenone modified hyperbranched self-initiation light-curable resin

A technology of sulfur-containing benzophenone and light-curable resin, which is applied in applications, coatings, inks, etc., can solve the problems of easy yellowing of the cured coating, slow curing rate, and easy migration to the surface, so as to overcome the curing rate Slow, excellent flexibility, high self-initiation efficiency

Inactive Publication Date: 2021-11-30
SHAOGUAN HEZHONG CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it still has disadvantages such as slow curing rate, easy yellowing of the cured coating, easy migration to the surface, strong volatility, large heat loss, production of toxic substances and strong pungent odor during use.

Method used

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  • Sulfur-containing benzophenone modified hyperbranched self-initiation light-curable resin
  • Sulfur-containing benzophenone modified hyperbranched self-initiation light-curable resin
  • Sulfur-containing benzophenone modified hyperbranched self-initiation light-curable resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of the second generation of hyperbranched polymer HPB-p, the steps are as follows: by 26.8 parts of trimethylolpropane (TMP), 80.5 parts of 2,2-dimethylolpropionic acid (DMPA), 25.0 parts of xylene, 0.4 Parts of catalyst p-toluenesulfonic acid were added to a four-necked flask equipped with a stirrer, a thermometer, an addition funnel, and a reflux water separator, and heated to 150-170°C under a nitrogen atmosphere for reflux reaction at normal pressure for 4 hours. When the detected acid value was lower than At 25mgKOH / g, add 161.0 parts of 2,2-dimethylolpropionic acid, 0.8 parts of p-toluenesulfonic acid and 30.0 parts of xylene respectively, reflux at 150-170°C for 2 hours, and then reduce the pressure to 1.2KPa Stop the decompression after reacting for 2 hours, and stop the reaction when the detected acid value is lower than 20mgKOH / g; distill the xylene under reduced pressure, add 50.0 parts of acetone after cooling, dissolve completely, add 80.0 parts ...

Embodiment 2

[0053] Preparation of the second generation of hyperbranched polymer HPB-b, the steps are as follows: by 26.8 parts of trimethylolpropane (TMP), 89.7 parts of 2,2-dimethylolbutyric acid (DMBA), 30.0 parts of xylene, 0.45 Parts of catalyst p-toluenesulfonic acid were added to a four-necked flask equipped with a stirrer, a thermometer, an addition funnel and a reflux water separator, heated under nitrogen protection to 105-120°C under normal pressure and refluxed for 4 hours, when the detected acid value was lower than At 25mgKOH / g, add 179.4 parts of 2,2-dimethylolpropionic acid, 0.9 parts of p-toluenesulfonic acid and 40.0 parts of xylene respectively, and react under normal pressure at 140-170°C for 2 hours, and then reduce the pressure to 1.2KPa Stop the decompression after reacting for 2 hours, and stop the reaction when the detected acid value is lower than 20mgKOH / g; evaporate the xylene under reduced pressure, add 80.0 parts of acetone after cooling, dissolve completely, ...

Embodiment 3

[0055] Preparation of isocyanate-acrylic acid functional monomer MDI-HEA: Add 150.0 parts of MDI and 0.08 parts of DBTDL to a four-necked flask equipped with a reflux condenser, a thermometer, a dropping funnel and a stirrer, stir to raise the temperature, and slowly Add dropwise a mixture of 70.0 parts of β-hydroxyethyl acrylate, 0.1 parts of hydroquinone and 50.0 parts of acetone. After the addition is complete, raise the temperature to 45-50°C to continue the reaction for 4 hours, and then take samples every 30 minutes to detect the NCO value of the system , when the detected NCO value is half of the initial value, the reaction is stopped, and the temperature is lowered to 40°C to prepare the isocyanate-acrylic acid functional monomer MDI-HEA.

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Abstract

The invention relates to sulfur-containing benzophenone modified hyperbranched self-initiation light-curable resin and a preparation method thereof. The self-initiation UV resin provided by the invention takes TMP as a core, has a hyperbranched three-dimensional structure, and contains a plurality of functional active groups, a plurality of sulfur-containing benzophenone photo-initiation groups and a plurality of branched chain bulk alkane groups. The resin has pigment bearing performance, high solid content, low viscosity and storage stability. The self-initiation efficiency is high, and the defects of low curing rate, easy yellowing of a coating, surface migration, strong volatility, large heat loss, generation of harmful substances and pungent smell and the like of an additional BP initiator are overcome. The sulfur-containing benzophenone hyperbranched self-initiation light-curable resin prepared by the invention has excellent flexibility, adhesive force, chemical resistance, heat resistance, aging resistance, oil resistance, wear resistance, pollution resistance and impact strength, is odorless in coating, and can be used for UV colored floor coatings, UV wood coatings, UV alloy coatings, UV circuit board ink, UV plastic coatings and the like.

Description

technical field [0001] The invention relates to a modified self-initiating photocurable resin, in particular to a sulfur-containing benzophenone-modified hyperbranched self-initiating photocurable resin and a preparation method thereof, belonging to the technical field of synthetic resins. Background technique [0002] In recent years, environmentally friendly coatings, including high solids and solvent-free coatings, water-based coatings, powder coatings and light-curing coatings, have achieved rapid development. Light curing technology has the advantages of fast curing, high production efficiency, room temperature operation, low energy consumption, low VOC, environmental protection, high quality, economy, and is suitable for a variety of substrates. It has been widely used in printing, packaging, advertising, building materials, decoration, electronics, etc. , communications, computers, stores, automobiles, aviation, aerospace, instrumentation, sports, health and many othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/02C08G83/00C09D167/06C09D187/00C09D11/101
CPCC08G63/91C08G63/02C08G83/005C08G83/006C09D167/06C09D187/00C09D11/101
Inventor 许钧强孙小光周强富康伦国姚东生郭红桥
Owner SHAOGUAN HEZHONG CHEM CO LTD
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