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Composition containing polyaspartic acid ester

A technology of aspartic acid ester and composition, which is applied in polyurea/polyurethane coatings, devices for coating liquid on the surface, coatings, etc., can solve the problems of polyaspartic acid ester yellowing and other problems, and achieve yellowing Inconspicuous, high color stability, anti-yellowing effect

Pending Publication Date: 2022-06-24
COVESTRO DEUTSCHLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a general disadvantage of polyaspartic ester-based coatings and elastomers is the tendency of polyaspartic esters to show significant yellowing during storage, which is undesirable during formulation, storage and use

Method used

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  • Composition containing polyaspartic acid ester
  • Composition containing polyaspartic acid ester
  • Composition containing polyaspartic acid ester

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Embodiment

[0093] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. When the definitions of terms in this specification conflict with the meanings commonly understood by those skilled in the art to which the invention belongs, the definitions set forth herein shall prevail.

[0094] All numerical values ​​used in the specification and claims to express amounts of ingredients, reaction conditions, etc. are understood to be modified by the term "about" unless otherwise indicated. Accordingly, unless indicated to the contrary, the numerical parameters set forth herein are approximations that can vary depending upon the desired properties sought to be obtained.

[0095] As used herein, "and / or" refers to one or all of the referred elements.

[0096] As used herein, "comprising" and "comprising" encompass only the recited element as well as instances where ...

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Abstract

The invention relates to a composition containing polyaspartic acid ester, a two-component coating containing the composition, a coating method and application of the coating, and a product obtained by coating with the coating. The composition containing the polyaspartic acid ester comprises the following components: a, the polyaspartic acid ester; b, thiol with an active hydrogen group; and c. Optionally an antioxidant in an amount of not more than 3% by weight, relative to the total weight of the composition; and the molar ratio of the sulfydryl group of the thiol in the component b) to the amino group of the polyaspartic acid ester in the component a) is 0.060-0.720. The composition is high in color stability and not prone to yellowing.

Description

technical field [0001] The present invention relates to a polyaspartate-containing composition, a two-component coating comprising the composition, a coating method and application of the coating, and a product coated with the coating. Background technique [0002] Coatings and elastomers containing polyaspartate can be widely used in a variety of substrates to provide protection and improve the performance of the substrate. Today, polyaspartate-containing coatings are widely used in industrial coatings because of their excellent corrosion resistance, abrasion resistance, chemical resistance and weather resistance. However, a common disadvantage of polyaspartate-based coatings and elastomers is the tendency of polyaspartate to undergo significant yellowing during storage, which is undesirable during formulation, storage, and use. . [0003] In the prior art, by adding sterically hindered phenol antioxidants such as 3,5-di-tert-butyl-4-hydroxytoluene, and organic phosphite ...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D7/48B05D7/24
CPCC09D175/02C09D7/48B05D7/24C08L2201/08C08K5/378C08K5/37C08K5/372C08K5/526C08K5/13
Inventor 李金旗朱德勇邓妍徐飞
Owner COVESTRO DEUTSCHLAND AG
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