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Special reactive type high-activity leveling agent for epoxy powder coatings as well as preparation method and application of leveling agent

An epoxy powder, reactive technology, applied in powder coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor resin compatibility, poor substrate wettability, etc., to improve the compactness of the coating and improve the durability Solvent performance, effect of leveling improvement

Inactive Publication Date: 2015-06-03
TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of poor resin compatibility and poor wettability of the substrate in traditional leveling agents and powder coatings in the prior art, and to provide a kind of liquid that can not only play the role of leveling, anti-shrinkage cavity, and increase gloss, Reactive high-activity leveling agent special for powder coatings capable of improving solvent resistance of coating film and preparation method thereof

Method used

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  • Special reactive type high-activity leveling agent for epoxy powder coatings as well as preparation method and application of leveling agent
  • Special reactive type high-activity leveling agent for epoxy powder coatings as well as preparation method and application of leveling agent
  • Special reactive type high-activity leveling agent for epoxy powder coatings as well as preparation method and application of leveling agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A special reactive type high activity leveling agent for epoxy powder coatings, its raw material constituents and weights are respectively:

[0024]

[0025] The preparation method of the above-mentioned special reactive type high activity leveling agent for epoxy powder coatings, the steps are as follows:

[0026] The butyl acetate and butyl acrylate of the above weight are sucked into the reaction kettle under negative pressure, and the stirrer is started to heat and reflux while maintaining a balanced state;

[0027] (2) Mix azobisisobutyronitrile, butyl methacrylate, hydroxypropyl acrylate, isooctyl acrylate, and maleic anhydride evenly, suck them into the additive dropping tank, and control the dropping rate and reaction kettle temperature , The dropwise addition is completed within 2 hours, and then the reaction is continued at 100-105°C for 3-6 hours, and then distilled under reduced pressure until there is no distillate, and weighed under cooling.

Embodiment 2

[0029] A special reactive type high activity leveling agent for epoxy powder coatings, its raw material constituents and weights are respectively:

[0030]

[0031] The preparation method of the above-mentioned special reactive type high activity leveling agent for epoxy powder coatings, the steps are the same as in Example 1.

Embodiment 3

[0033] A special reactive type high activity leveling agent for epoxy powder coatings, its raw material constituents and weights are respectively:

[0034]

[0035] The preparation method of the above-mentioned special reactive type high activity leveling agent for epoxy powder coatings, the steps are the same as in Example 1.

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Abstract

The invention relates to a special reactive typehigh-activityleveling agent for epoxy powder coatings as well as a preparation method and an application of the leveling agent. Theleveling agent comprises the raw materials in parts by weight as follows: 900-950 parts of butyl acrylate, 300-800 parts of butyl acetate, 10-50 parts of maleic anhydride, 10-50 parts of hydroxypropyl acrylate, 10-50 parts of 2-ethylhexyl acrylate, 10-50 parts of butyl methacrylate and 10-40 parts of azobisisobutyronitrile. The leveling agent is mainly prepared into a solid leveling agent in the later period to be applied to the powder coatings, and polar groups such as hydroxyl groups, anhydride and the like are introduced, so that thecompatibility with epoxy resin in the powder coatings and the wettability of the coatings and substrates are promoted, and the coatings have excellent leveling and brightening effects; in addition, active groups, namely, carboxyl groups, participate in a curing reaction, so that the compactness of the coatings is improved, thesolvent resistance of films is improved, and theleveling agent is suitable for the various epoxy powder coatings.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis and relates to powder coatings, in particular to a special reactive high-activity leveling agent for epoxy powder coatings and its preparation method and application. Background technique [0002] The traditional leveling agent is made of monomers such as butyl acrylate and methyl methacrylate as raw materials, which are polymerized into a polymer with a specific viscosity, and then mixed with an inorganic carrier to play a leveling role in powder coatings. role. Since polybutyl acrylate is a thermoplastic substance and does not contain strong polar groups in the molecule, there are inevitably defects. First of all, thermoplasticity makes it easy to bleed out in the coating film; secondly, the absence of strong polar groups makes it poor in wettability to the substrate and poor in anti-shrinkage cratering ability. Therefore, in order to better improve this situation and obtain a dense...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/06C09D163/00C09D5/03C08F220/18C08F222/06C08F220/28C09D7/47
Inventor 陈超王焱石生敏赵金祥
Owner TIANJIN XIANGSHENG NEW MATERIALS CO LTD
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