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Biodegradable UV (ultraviolet)-curable resin as well as preparation method and application thereof in coating material for paper

A technology of curing resin and ultraviolet light, which is applied in the direction of paper coating, 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, Effect of good stress-strain properties, high tensile strength

Inactive Publication Date: 2015-03-04
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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  • Biodegradable UV (ultraviolet)-curable resin as well as preparation method and application thereof in coating material for paper
  • Biodegradable UV (ultraviolet)-curable resin as well as preparation method and application thereof in coating material for paper
  • Biodegradable UV (ultraviolet)-curable resin as well as preparation method and application thereof in coating material for paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0034]Step (1): Get 10 grams of ethylene glycol as an initiator, 0.1 gram of stannous octoate as a catalyst, and 75 grams of lactide, and add them to a slender glass reaction tube with a neck, nitrogen gas, and then vacuumize. Sinter and seal the glass of the reaction nozzle with the flame of an alcohol torch; then react the polymerization tube in an oil bath at 135°C for 18 hours, break the polymerization tube after cooling, and dissolve the block polymer in chloroform, and then dissolve it with excess pure ethanol The polymer was precipitated from chloroform and dried under vacuum at room temperature to obtain degradable ethylene glycol‐polylactide.

[0035] Step (2): Get 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-butylhydroquinone as a polymerization inhibitor, and 8...

Embodiment 2

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

[0045] Step (1): Get 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, add to In the glass reaction tube with a slender neck, nitrogen gas is passed, and after vacuum treatment, the glass of the reaction tube is sintered and sealed with the flame of an alcohol torch; then the reaction tube is reacted in an oil bath at 150°C for 24 hours, and then broken after cooling Polymerization tubes were obtained by dissolving blocky polymers in chloroform, and then the polymers were precipitated from chloroform with excess pure ethanol, and after vacuum drying at room temperature, degradable 2-methyl-1,4-butanediol- Polylactyl-glycolide.

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

Embodiment 3

[0050] Prepare degradable UV curable resin (UV-DPU3) and its coating material (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 slender glass reaction tube with a neck, and pass nitrogen gas. Then after vacuum treatment, the glass at the mouth of the reaction tube was sintered and sealed with the flame of an alcohol torch; then the reaction tube was reacted in an oil bath at 130°C for 36 hours, and after cooling, the polymer tube was broken to obtain a block polymer dissolved in chloroform. The polymer was precipitated from chloroform with excess pure ethanol, and after vacuum drying at room temperature, the degradable 1,4-butanediol-polylactide was 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-...

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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, its preparation method and its application in paper coating materials; the resin is especially suitable for the preparation of paper coating and coating materials. Background technique [0002] UV curing (UV Curable) technology is a chemical crosslinking reaction initiated by light, which has great advantages, including (1) fast curing speed, the reaction can be completed within a few tenths of a second, energy saving and low cost; ( 2) Environmentally friendly, almost 100% of the components can be cross-linked and polymerized; (3) Suitable for coating heat-sensitive substrates, 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 industrial new technology in paper coating products, showing a very broad market ...

Claims

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Application Information

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Patent Type & Authority Applications(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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