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Preparation of a fluorine-containing silicone modified anti-graffiti coating

A fluorosilicon modification, anti-graffiti technology, applied in anti-corrosion coatings, anti-fouling/underwater coatings, electrophoretic coatings, etc., can solve problems such as good tank liquid circulation stability, good production efficiency, and unstable tank liquid circulation. , to achieve the effect of good bath stability, good decorative effect, smooth and bright board surface

Active Publication Date: 2021-01-12
HAOLISEN CHEM TECH (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, powder epoxy coating is generally used for spraying, and its disadvantages are that it is not oleophobic and sticky, and the production efficiency is low.
Although electrophoretic coatings have high efficiency and low cost, general electrophoretic coatings have the same problems as powder coatings, that is, they are not oleophobic and sticky, or after passing through, add fluorine-containing or silicon-containing additives to meet the hydrophobic and oleophobic effect. Liquid circulation is extremely unstable, and various paint film defects are prone to appear after circulation
There is a lack of an electrophoretic coating that meets high performance and high functionality, and has good bath circulation stability and excellent original paint stability

Method used

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  • Preparation of a fluorine-containing silicone modified anti-graffiti coating
  • Preparation of a fluorine-containing silicone modified anti-graffiti coating
  • Preparation of a fluorine-containing silicone modified anti-graffiti coating

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0028] Preparation Example 1 Preparation of fluorine-containing organosilicon ring-modified oxyacrylic resin

[0029]

[0030] In a flask with stirring, condenser and dropping funnel, add bisphenol A epoxy resin with epoxy equivalent of 188, polycaprolactone diol, PPG-400, dibutyltin dilaurate, bisphenol A. Methyl isobutyl ketone, heat up to 100°C, add dimethylbenzylamine, continue to heat up to 135°C and stir for 1.5 hours until the epoxy equivalent is 1000±100, add half-blocked polyisocyanate dropwise at 130-140°C After half an hour to complete the dropwise addition, continue to stir for 1 hour, then drop the temperature to 115°C and drop the mixed solution (methyl methacrylate, n-butyl acrylate, styrene, azobisisobutyronitrile, PMTFPS, benzoyl peroxide ), after 3 hours of dropwise addition and heat preservation for half an hour, add propylene glycol monobutyl ether, cool down to 115°C, add N-methylethanolamine, and react at 115°C for 3 hours to obtain a fluorosilicone-mo...

preparation Embodiment 2

[0031] Preparation Example 2 Preparation of blocked aliphatic isocyanate curing agent:

[0032] 25 parts methyl isobutyl ketone

[0033] 40 parts hexamethylene diisocyanate

[0034] 35 parts n-butanol

[0035] Add methyl isobutyl ketone and hexamethylene diisocyanate into a reaction vessel with a stirrer and a condenser according to the formula amount, blow nitrogen, raise the temperature to 75°C, add n-butanol dropwise, finish dropping in 1 hour, and keep warm After 2 hours, cool down to below 45°C and discharge to obtain the blocked aliphatic isocyanate curing agent.

preparation Embodiment 3

[0036] Preparation Example 3 Preparation of Fluorosilicone Modified Emulsion

[0037]

[0038] Add the fluorosilicone-modified cyclopropane resin and the blocked aliphatic isocyanate curing agent into the reaction vessel according to the formula quantity and stir for 1 hour to mix evenly, then add the neutralizer (lactic acid and sulfamic acid are dissolved in deionized water in advance) and stir After 1 hour, deionized water was added to the reaction vessel at one time and stirred at high speed for 2 hours. The temperature of the reaction vessel was controlled below 45° C. during the whole preparation process to obtain the fluorosilicon modified emulsion.

[0039]The fluorosilicon modified emulsion obtained in the above example 3 is matched with the HLS high-performance black slurry according to 6:1 to form an electrophoresis tank solution with a solid content of 12%, and it is matured in the electrophoresis tank for 24 hours. The electrophoresis voltage is 160V, and the te...

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Abstract

The invention relates to preparation of fluorine-containing organosilicone modified anti-graffiti paint, in particular to preparation of organosilicone polyester modified cyclopropyl resin. The resin,namely cationic resin, can be used in both aqueous paint and electrophoretic paint, plays an anti-graffiti self-cleaning role in the electrophoretic paint, and is prepared from a fluorine-silicon modified emulsion and high-performance color paste in a ratio of 6:1. The preparation has the advantages that paint products have high storage stability; the paint has high salt spray resistance, high weather resistance and high functionality after electrophoretic coating, and is applicable to painting of kitchens and places with high self-cleaning requirements; the paint is water-based two-componentanti-graffiti electrophoretic paint, and is convenient to apply, environmentally friendly and safe to use; the surfaces of boards are smooth and bright, the functionality is high, and the stability of tank liquor is also high; coatings have high mechanical property, acid-alkali resistance, weather resistance and salt-pray resistance.

Description

technical field [0001] The invention relates to coatings, in particular to the preparation of a fluorine-containing organosilicon modified anti-graffiti coating. Background technique [0002] After decades of development, electrophoretic coatings have been widely used in the automotive industry, building materials, hardware, home appliances, furniture and other metal coating fields due to their advantages of high efficiency, energy saving and low pollution. Kitchen appliances are also beginning to favor electrophoretic coatings, especially range hoods. The prior art generally uses powdered epoxy coatings for spraying, and its disadvantages are that it is not oleophobic, sticky and has low production efficiency. Although electrophoretic coatings have high efficiency and low cost, general electrophoretic coatings have the same problems as powder coatings, that is, they are not oleophobic and sticky, or after passing through, add fluorine-containing or silicon-containing addit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D5/44C09D5/08C09D5/16
CPCC09D5/08C09D5/1662C09D5/4484C09D151/08
Inventor 胡浩东刘薇薇赵颖陈海波贾龙娟刘铭郭战良
Owner HAOLISEN CHEM TECH (JIANGSU) CO LTD
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