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An anti-graffiti coating composition

A composition and coating technology, applied in the direction of coating, etc., can solve the problems of inconvenient removal of graffiti, damage to the coating film, and unsatisfactory anti-graffiti performance

Active Publication Date: 2020-07-14
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of the problems mentioned in the aforementioned background technology: the existing silicone-modified anti-graffiti coatings and silicone-based anti-graffiti coatings usually contain organic solvents, the VOC content cannot well meet environmental protection requirements, and the anti-graffiti performance is not enough Ideal, especially graffiti removal is inconvenient, needs to be removed with a solvent and is likely to damage the coating film when removed, the invention provides a coating composition

Method used

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  • An anti-graffiti coating composition
  • An anti-graffiti coating composition
  • An anti-graffiti coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5 and comparative example 1-4

[0180] The raw material components of the coating compositions of each example and comparative example are shown in Table 1 below.

[0181] In Table 1, wt% is based on the total weight of the coating composition.

[0182] Table 1 each embodiment and the raw material component of comparative example

[0183]

[0184]

[0185] According to the above table, the raw materials of component A and component B were mixed separately to obtain the coating composition. Wherein, in Examples 1-4 and Comparative Examples 2-4, the dynamic viscosity difference between component A and component B at 25° C. is not more than 500 mPa·s.

[0186] The coating compositions of the above-mentioned embodiments and comparative examples are only different in raw materials, and are all applied to the substrate by the same method and solidified to form a film, specifically including:

[0187] (1) Mixing: fully stir and mix component A and component B to obtain a mixture;

[0188] (2) Curing: The o...

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Abstract

A coating composition, which is one-component or two-component, comprising an alkoxy- functional silicone resin, a hydroxy silicone oil having a dynamic viscosity of not more than 1,000 mPas at 25 DEGC, an aminosilane, and a catalyst, wherein the alkoxy-functional silicone resin and the hydroxyl silicone oil are in different components in a two-component coating composition. The coating composition herein is silicone-based and has excellent anti-graffiti and anti-stick properties. Moreover, the coating composition can be solvent free.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an anti-graffiti coating composition. Background technique [0002] In recent years, the damage caused by graffiti has attracted more and more attention. In public places, whether it is public transportation, such as subways, trains, buses, or public facilities, such as bus shelters, utility poles, and exterior walls, various sprayed graffiti and small advertisements posted at will can be seen everywhere, which not only affects City appearance, but also caused some damage to the building structure. At present, countries spend a lot of money on removing graffiti in public places, but it is impractical to reduce the amount of graffiti. On the other hand, in indoor homes, children's nature is to scribble on the walls of the home, and marker pens and oil-based pens are usually more corrosive than spray paint, which has caused great trouble to parents. Therefore, there is a need to develop ...

Claims

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Application Information

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IPC IPC(8): C09D183/06C09D183/04
CPCC09D183/04C08G77/16C08G77/18C08K5/5419C08K5/57C08L83/00
Inventor 沙圣刚
Owner WACKER CHEM GMBH
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