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Resin system capable of realizing automatic oxidation, automatic initiation and radiation curing and preparation method thereof

A technology of radiation curing resin and auto-oxidation, applied in the preparation of organic compounds, organic chemical methods, epoxy resin coatings, etc., can solve the problems of increasing investment costs, the coating surface cannot be fully dried and enlarged, etc.

Active Publication Date: 2012-12-05
GUANGDONG HUARUN PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ideally, the radiation-curable coating composition can be fully cured in air under the effect of natural light within an acceptable length of time, but oxygen inhibition, for example, will result in insufficient drying of the coating surface in contact with the air (curing). ) or delayed drying
In order to solve this problem, the reaction can be carried out under the condition of isolating oxygen, but this needs to increase the production equipment, thus increasing the investment cost and making the construction operability of the coating composition reduce; or the concentration of the free radical initiator can be increased, make it possible to maintain a suitable concentration of reactive species even on the surface with the greatest oxygen concentration, but this also inevitably amplifies the problems associated with free radical initiators

Method used

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  • Resin system capable of realizing automatic oxidation, automatic initiation and radiation curing and preparation method thereof
  • Resin system capable of realizing automatic oxidation, automatic initiation and radiation curing and preparation method thereof
  • Resin system capable of realizing automatic oxidation, automatic initiation and radiation curing and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0138] In a particularly preferred embodiment of the present invention, at least a part of the matrix resin in the autoxidisable, self-initiating, radiation-curable resin system is a component having the following formula (II):

[0139]

[0140] in,

[0141] R 1 for CH 2 =CH- or CH 2 =C(CH 3 )-;

[0142] -OCOR 1 ’ is an average iodine value of at least 100g I 2 Unsaturated fatty acid residues of unsaturated fatty acids per 100g of fatty acids, where R 1 ' is the alkenyl moiety of said unsaturated fatty acid;

[0143] R 2 Be the divalent residue with following formula (III) structure:

[0144]

[0145] in,

[0146] D stands for -S-, -S-S-, -SO-, -SO 2 -, -CO 2 -, -CO-, -O- or a divalent alkyl group having 1 to 10 carbon atoms,

[0147] Each Y represents a halogen, or optionally substituted monovalent C 1 -C 10 Hydrocarbyl,

[0148] Each m represents 0, 1, 2, 3 or 4,

[0149] n represents an integer from 0 to 4;

[0150] R 3 Indicates optionally substi...

Embodiment 1

[0275] Example 1: Autoxidisable, self-initiating radiation-curable epoxy resin systems

[0276] Step a. Preparation of epoxy resin modified by autoxidisable compound, radiation curable compound

[0277] Drop into 1.16g tetramethylammonium chloride, 32.4g acrylic acid and 14.02g linoleic acid in the head tank, and mix well. Drop into 196.08g epoxy resin and 0.46g p-hydroxyanisole in reaction bottle, and mix homogeneously. Then, at a temperature of 80 to 120° C., drop the mixed solution in the header tank into the reactor. After the dropwise addition was completed, the resulting reaction mixture was kept at 80˜120° C., and the acid value of the mixture was tested. When the acid value of the reaction mixture was lower than 1 mg KOH / (g reaction mixture), the temperature was lowered to obtain an epoxy resin modified by unsaturated fatty acid and acrylic acid.

[0278] Step b. Preparation of 184 half-blocked TDI

[0279] Under the protection of nitrogen, put 0.03g of dibutylti...

Embodiment 2a

[0282] Example 2a. Determination of the properties of the autoxidisable, self-initiating radiation-curable epoxy resin systems of the present invention

[0283] The drying time, coating hardness, coating adhesion, coating flexibility, coating Layer odor, coating yellowing resistance, and coating heat loss at 25 to 270°C.

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Abstract

The invention provides a resin system capable of realizing automatic oxidation, automatic initiation and radiation curing and a preparation method thereof, relates to a coating obtained by resin capable of realizing automatic oxidation, automatic initiation and radiation curing and provides a coating composition of the resin system capable of realizing automatic oxidation, automatic initiation and radiation curing. The resin system capable of realizing automatic oxidation, automatic initiation and radiation curing disclosed by the invention comprises a segment capable of realizing radiation curing and a segment realizing automatic oxidation, so that the coating obtained by curing the resin system containing two groups has favorable balanced hardness and flexibility and adhesive power and overcomes the contradiction between the hardness and the flexibility and the adhesive power, which is difficult in solving for a long term.

Description

technical field [0001] The present invention relates to an autoxidisable, self-initiating, radiation-curable resin system, a method for its preparation, and a coating obtained from the above-mentioned autoxidisable, self-initiating, radiation-curable resin system. The present invention also relates to a coating composition comprising the above-mentioned autoxidisable, self-initiating, radiation-curable resin system. Background technique [0002] Radiation polymerization is a process in which active species such as free radicals or ions are generated from radiation-sensitive substances such as photoinitiators or monomers under the action of radiation energy such as UV light, thereby initiating chain polymerization of monomers. As a specific application of radiation polymerization, radiation-curing coatings have been particularly popular since they came out in the 1960s because of their energy saving, environmental friendliness, and fast curing rate. In addition, compared wit...

Claims

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Application Information

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IPC IPC(8): C07D303/24C07B43/00C07C269/02C07C271/28C09D167/06C09D163/10C09D175/14C09D171/00C09D4/02C09D4/06
Inventor 陈能昌王韬陈晓锐段刚
Owner GUANGDONG HUARUN PAINT CO LTD
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