Degradable UV curable resin and its preparation method and application in paper coating material

A technology of curing resin and ultraviolet light, which is applied in the direction of coating, polyurea/polyurethane coating, etc., can solve the problems of pollution, coating and printing waste that cannot be degraded and recycled by itself, and achieve high Young's modulus and good stress‐ Strain properties, effects of high tensile strength

Inactive Publication Date: 2017-06-13
HESHAN ASTROS PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of UV-curable coating materials has no direct harm to the human body, but with the gradual expansion of its market share, it has become an important environmental pollution problem that the waste of coated printed matter cannot be degraded and recycled by itself, so the development has good application performance and at the same time There is a very urgent practical demand for photocurable coating resins with degradable properties

Method used

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  • Degradable UV curable resin and its preparation method and application in paper coating material
  • Degradable UV curable resin and its preparation method and application in paper coating material
  • Degradable UV curable resin and its preparation method and application in paper coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare degradable UV-curable resin (UV-DPU1) and its coating materials (UV-DPU1 coating) as follows:

[0034] Step (1): Take 10 grams of ethylene glycol as an initiator, 0.1 grams of stannous octoate as a catalyst, and 75 grams of lactide, add them to a slender glass reaction tube with nitrogen, and then vacuumize. The glass at the mouth of the reaction tube was sintered and sealed with an alcohol torch flame; then the polymerization tube was reacted in an oil bath at 135°C for 18 hours. After cooling, the polymerization tube was broken to obtain a block polymer dissolved in chloroform, and then an excess of pure ethanol The polymer is precipitated from chloroform and dried under vacuum at room temperature to obtain degradable glycol-polylactide.

[0035] Step (2): Take 25 grams of trimethylolethane, 12 grams of acrylic acid, 0.01 grams of concentrated sulfuric acid as a catalyst, 0.005 grams of 2,5-di-tert-butyl hydroquinone as a polymerization inhibitor, and 80 grams of t...

Embodiment 2

[0044] Prepare the degradable ultraviolet curing resin (UV-DPU2) and its coating material (UV-DPU2 coating) as follows:

[0045] Step (1): Take 30 grams of 2-methyl-1,4-butanediol as an initiator, 0.065 grams of stannous octoate as a catalyst, and a mixed monomer of 75 grams of lactide and 25 grams of glycolide, and add them to The glass reaction tube with a slender neck is filled with nitrogen, and after vacuum treatment, the glass at the reaction tube mouth is sintered and sealed with an alcohol burner flame; then the reaction tube is reacted in an oil bath at 150°C for 24 hours, and then broken after cooling Polymerization tube, the obtained block polymer is dissolved in chloroform, and then the polymer is precipitated from chloroform with excess pure ethanol, and after vacuum drying at room temperature, the degradable 2-methyl-1,4-butanediol is obtained. Polylactide-glycolide.

[0046] Step (2): Take 45 grams of trimethylolpropane, add 20 grams of methacrylic acid, 0.02 grams ...

Embodiment 3

[0050] Prepare the degradable UV-curable resin (UV-DPU3) and its coating materials (UV-DPU3 coating) as follows:

[0051] Step (1): Take 20 grams of 1,4-butanediol as an initiator, 0.08 grams of stannous octoate as a catalyst, and 120 grams of lactide monomer, and add them to a glass reaction tube with a slender neck. After vacuuming, the glass at the mouth of the reaction tube was sintered and sealed with an alcohol torch flame; then the reaction tube was reacted in an oil bath at 130°C for 36 hours. After cooling, the polymer tube was broken and the bulk polymer was dissolved in chloroform. Then the polymer is precipitated from chloroform with an excess of pure ethanol, and after vacuum drying at room temperature, the degradable 1,4-butanediol-polylactide is obtained.

[0052] Step (2): Take 30 grams of trimethylolethane, add 15 grams of 3,3-dimethacrylic acid, 0.03 grams of concentrated sulfuric acid as a catalyst, and 0.005 grams of 2,5-di-tert-butyl hydroquinone as a catalyst....

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Abstract

The invention discloses biodegradable UV (ultraviolet)-curable resin, a preparation method of the biodegradable UV-curable resin, and an application of the biodegradable UV-curable resin in a coating material for paper. The preparation method comprises the following steps: performing ring opening polymerization on aliphatic dibasic alcohol and cyclic ester monomers to prepare biodegradable bihydroxy poly cyclic ester; performing esterification reaction on trihydroxy alkane and an unsaturated carboxylic acid monomer to prepare a bihydroxy acrylate monomer; performing gradual addition polymerization on diisocyanate, polyether polyol, biodegradable bihydroxy poly cyclic ester, a bihydroxy vinyl monomer and a monohydroxy acrylate monomer to obtain the biodegradable UV-curable resin of which a side chain and a terminal group both contain polymerizable double bonds; and preparing a biodegradable UV-curable coating material for the paper by using the biodegradable UV-curable resin, an active diluent monomer, a photoinitiator, a leveling agent and a defoaming agent. The UV-curable resin coating material prepared by using the method disclosed by the invention has good stress-strain performance and relatively high tensile strength and Young modulus after being cured; and the coating material can be degraded in an alkaline phosphate buffer solution.

Description

Technical field [0001] The invention relates to an ultraviolet light curing resin, in particular to a degradable ultraviolet light curing resin, a preparation method thereof, and application in a coating material for paper; the resin is particularly suitable for preparing a coating material for paper coating. Background technique [0002] UV Curable technology is a chemical cross-linking reaction initiated by light. It has great advantages, including (1) Fast curing speed, which can complete the reaction within a few tenths of a second, saving energy and low cost; 2) Environmental protection, almost 100% of the components can be cross-linked and polymerized; (3) Suitable for heat-sensitive substrate coating, and can be applied to coating materials such as plastics, leather, textiles and paper that are not suitable for heating. Therefore, UV curing technology has become an important new industrial technology in paper coating products, showing a very broad market prospect. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/67C08G18/48C08G18/42C08G63/664C08G63/78C09D175/14C09D7/12
CPCC08G18/4018C08G18/428C08G18/4812C08G18/4825C08G18/4854C08G18/672C08G18/675C08G63/08D21H19/16C08G18/40
Inventor 邓国康冯庆民胡剑青赖淦荷
Owner HESHAN ASTROS PRINTING
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