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Pigment composite particle, weather resistant coating composition and weather resistant structure employing the same

A technology of composite particles and pigments, used in pigment pastes, reflective/signal coatings, coatings, etc., can solve problems such as cracking of organic pigments, poor weather resistance, and reduced film performance

Inactive Publication Date: 2019-03-05
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the formed coating film is irradiated with ultraviolet light, the organic pigments in the coating film will crack, resulting in a decrease in the performance of the coating film
Taking the current commercially available products (such as products of BASF, Senec, etc.) as an example, after 1000 hours of ultraviolet light irradiation, ΔE>2, the weather resistance is not good

Method used

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  • Pigment composite particle, weather resistant coating composition and weather resistant structure employing the same
  • Pigment composite particle, weather resistant coating composition and weather resistant structure employing the same
  • Pigment composite particle, weather resistant coating composition and weather resistant structure employing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Take 0.6g of tetraethoxysilane (Tetraethoxysilane; TEOS), 0.3g of organic pigment particles (BASF PaliogenL0086), add 3g of isopropanol (IPA) and mix evenly, then add 0.24g, 0.1N hydrochloric acid, and then carry out sol at room temperature -After about 2 hours of sol-gel reaction, the temperature was raised to about 80° C., and the reaction was continued for 2 hours to prepare a dispersion of pigment-containing composite particles.

Embodiment 2

[0078] The preparation method is the same as in Example 1, except that tetraethoxysilane (TEOS) is replaced by methyltriethoxysilane (MTES). It is formulated as a dispersion liquid containing pigment composite particles.

Embodiment 3

[0080] The preparation method is the same as in Example 1, except that 0.24g, 0.1N hydrochloric acid is replaced by 0.24g, 1N hydrochloric acid, and after the sol-gel reaction is carried out at room temperature for about 2 hours, the temperature is changed to about 60°C, and the reaction is continued After 2 hours, a dispersion liquid containing pigment composite particles was prepared.

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Abstract

The present invention provides a pigment composite particle. The pigment composite particle is a covalently bonded product of a crosslinking structure having silicon-oxygen bonds and a plurality of organic pigment particles. The plurality of organic pigment particles are dispersed in the crosslinking structure. The chemical structure of the organic pigment particle includes C=O and one or more structures selected from the groups defined in the specification. A weather resistant coating composition and a weather resistant structure employing the same are also provided.

Description

technical field [0001] The invention relates to a pigment composite particle, a weather-resistant coating and a weather-resistant structure containing the same. Background technique [0002] Organic pigments are generally directly added to resins to make paints. However, after the formed coating film is irradiated with ultraviolet light, the organic pigments in the coating film will crack, resulting in a decrease in the performance of the coating film. Taking the current commercially available products (such as products of BASF, Senec, etc.) as an example, after 1000 hours of ultraviolet light irradiation, ΔE > 2, and the weather resistance is not good. [0003] Therefore, there is an urgent need to develop novel pigments with improved weather resistance. Contents of the invention [0004] According to one embodiment, the present invention provides a pigment composite particle, which is a covalently bonded product of a cross-linked structure having silicon-oxygen bond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/41
CPCC09D7/41C09D5/004C08K5/0041C09D7/63C09B67/0033C09B67/009C09D133/04C09B67/0097C09D5/00C09D17/003C09D17/002C09B5/62C09D7/20
Inventor 傅怀广刘邦弘巫诚恩陈丽雯
Owner IND TECH RES INST