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Crosslinked microparticle, hydrophilic treatment agent, method for coating hydrophilic capsule and hydrophilic capsule

A hydrophilic treatment agent and cross-linking technology, which is applied in the field of cross-linkable particles, can solve the problems of not meeting the hydrophilicity persistence and not considering the hydrophilicity persistence.

Active Publication Date: 2007-11-14
NIPPON PAINT SURF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] These disclosed technologies do not take into account the persistence of hydrophilicity under the adhesion of pollutants such as palmitic acid
In addition, for N-methylolacrylamide, etc., it is only a component that is mixed in the hope that the particles will be crosslinked, and the amount of N-methylolacrylamide, etc. is relatively small, so that the obtained hydrophilic crosslinked polymer particles cannot Satisfies the persistence of hydrophilicity in the case of adhesion of pollutants

Method used

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  • Crosslinked microparticle, hydrophilic treatment agent, method for coating hydrophilic capsule and hydrophilic capsule
  • Crosslinked microparticle, hydrophilic treatment agent, method for coating hydrophilic capsule and hydrophilic capsule
  • Crosslinked microparticle, hydrophilic treatment agent, method for coating hydrophilic capsule and hydrophilic capsule

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Embodiment

[0087] Examples are given below to describe the present invention in more detail, but the present invention is not limited to these examples.

[0088] Production Example 1 Preparation of Crosslinkable Microparticles

[0089]70 mass parts of N-methylol acrylamide and 30 mass parts of methoxy polyethylene glycol monomethacrylate (the number of repeating units is 100 polyethylene chains) dissolved in 200 mass parts of methoxy The monomer solution formed in propanol and the solution formed by dissolving 1 mass part of "ACVA" (an azo initiator produced by Otsuka Chemical Co., Ltd.) in 50 mass parts of methoxy propanol were obtained from different At 105° C., dropwise added to 150 parts by mass of methoxypropanol under a nitrogen atmosphere for 3 hours, then heated and stirred for 1 hour to polymerize. In the obtained dispersion liquid, the average particle diameter of the crosslinkable fine particles was 250 nm, the water swelling ratio of the crosslinkable fine particles was 1.10...

manufacture example 7

[0101] A monomer solution formed by dissolving 80 parts by mass of acrylic acid and 20 parts by mass of 2-hydroxyethyl acrylate in 300 parts by mass of pure water and a monomer solution formed by dissolving 1 part by mass of ammonium persulfate in 50 parts by mass of pure water The solutions were added dropwise to 300 parts by mass of ion-exchanged water at 70°C from different ports under a nitrogen atmosphere for 90 minutes, then heated and stirred for 1 hour to polymerize, and then added to , to prepare an acrylic resin with a solid content of 10% by mass. In the obtained acrylic resin, the acid value of the solid content was 620, and the hydroxyl value of the solid content was 110.

manufacture example 8

[0103] A solution formed by dissolving 60 parts by mass of acrylic acid and 40 parts by mass of sodium styrene sulfonate in 300 parts by mass of pure water and a solution formed by dissolving 1 part by mass of ammonium persulfate in 50 parts by mass of pure water, respectively From different ports, under nitrogen atmosphere, add dropwise to 300 parts by mass of ion-exchanged water at 80°C for 90 minutes, then heat and stir for 1 hour to polymerize, add ion-exchanged water to prepare a solid Composition is 10% acrylic resin. In the obtained acrylic resin, the acid value of solid content was 470.

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Abstract

The invention provides crosslinkable microparticles, which form a hydrophilic coating layer having excellent hydrophilicity, hydrophilicity maintenance after the adhesion of contaminants and adhesion on metallic surfaces such as aluminum or aluminum alloy.The crosslinkable microparticles are obtained by the copolymerization of monomer components comprising: (a) 30-95 wt% of a monomer represented by the following formula 1; (b) 5-60 wt% of a monomer having a polyoxyalkylene chain and polymerizable double bond; and (c) 0-50 wt% of other polymerizable monomers. In formula 1, R1 represents H or methyl group, and R2 represents CH2 or C2H4. Particularly.

Description

technical field [0001] The present invention relates to cross-linkable microparticles, a hydrophilic treatment agent, a coating method of a hydrophilic coating, and a hydrophilic coating. Background technique [0002] Various surface treatments are carried out on the surface of metal materials. Aluminum and its alloys, in particular, are light in weight and have excellent workability and thermal conductivity, so they are widely used in heat exchangers. [0003] When cooling air conditioners, etc., for the radiator of the heat exchanger, the moisture in the air adheres to the surface of the radiator to form condensed water. The water droplets cause filling, which increases the ventilation resistance and reduces the exchange efficiency of the heat exchanger. , In addition, there are also problems such as pollution caused by noise and scattering of water droplets. In order to prevent such a problem, the surface of the heat sink has been hydrophilized. [0004] In recent year...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/04C09D133/00B05D7/24C08F220/28C08F220/54C08F220/58C08F290/04C08J5/22C09D101/28C09D125/08C09D125/18C09D129/04C09D133/02C09D133/14C09D133/24C09D155/00
CPCC08F220/06C08F220/14C08F220/18C08F220/56C08F226/06C09D133/10C09D133/26C08F216/1433C08F220/306
Inventor 饭田美和印部俊雄牛尾朗
Owner NIPPON PAINT SURF CHEM