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Organic hydrophilic resin for odorless hydrophilic coating, coating composition and application thereof

A technology of hydrophilic coating and hydrophilic resin, which is applied in the direction of coating, etc., can solve the problems of coating, poor punching performance, and large wear of abrasive tools without considering the problem of coating odor, so as to reduce the risk of coating odor , good brewing performance, and the effect of reducing the adsorption of peculiar smell

Active Publication Date: 2018-06-12
GUANGZHOU HUMAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Most of the current patented technologies propose solutions to the odor problem of inorganic systems, such as CN1800281A, CN1267571A and CN101020799A, but the inorganic system itself has obvious adsorption of odor, and there are congenital defects such as large abrasive wear and poor punching performance.
For the odor problem of pure organic systems, there are few corresponding patented technologies. CN103254353A mainly aims at the odor when the process is baked and the air conditioner turns on the heating mode, but does not consider the odor problem of the coating during the curing process and the coating's effect on odor Adsorption problem
The temperature in the curing process is higher, and the temperature of the drying tunnel can reach above 300°C, which is the most likely to cause peculiar smell to the coating. At present, the coating equipment of most manufacturers will over-baked the coating, which often leads to the peculiar smell of the coating.
Moreover, most of the organic hydrophilic coating products currently on the market have this problem.

Method used

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  • Organic hydrophilic resin for odorless hydrophilic coating, coating composition and application thereof
  • Organic hydrophilic resin for odorless hydrophilic coating, coating composition and application thereof
  • Organic hydrophilic resin for odorless hydrophilic coating, coating composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) The organic hydrophilic resin A for the odorless hydrophilic coating comprises the following components by mass: 5 parts of acrylic acid; 10 parts of p-styrenesulfonic acid; 0.2 part of IBOA; 0.2 part of sodium persulfate; 1 part; balance water.

[0042] Dissolve sodium persulfate in water to make a 1% initiator solution, add the remaining water and butyl glycol ether into the reaction kettle, heat to 80°C, add acrylic acid, p-styrenesulfonic acid and IBOA while stirring, After being stirred evenly, start to add the initiator solution dropwise, finish the dropwise addition within 2 hours, continue heating and stirring for 5 hours, obtain the organic hydrophilic resin A for odorless hydrophilic coating after cooling, and measure it with gel permeation chromatography (GPC). The obtained molecular weight was 210,000.

[0043](2) The coating composition comprises the following components in parts by mass: 35 parts of resin A; 0.1 part of titanate coupling agent; 0.05 p...

Embodiment 2

[0046] (1) Organic hydrophilic resin B for an odorless hydrophilic coating comprises the following components by mass: 20 parts of acrylic acid; 2 parts of sodium vinyl sulfonate; 0.5 part of IBOA; 0.5 part of potassium persulfate; 3 parts of isopropanol ; water balance.

[0047] Dissolve potassium persulfate in water to make a 0.5% initiator solution, add the remaining water and isopropanol to the reaction kettle, heat to 70°C, add acrylic acid, sodium vinyl sulfonate and IBOA while stirring, and wait to stir After uniformity, the initiator solution was added dropwise, and the dropwise addition was completed within 3 hours, and then continued heating and stirring for 4 hours, and after cooling, the organic hydrophilic resin B for an odorless hydrophilic coating was obtained, with a molecular weight of 260,000.

[0048] (2) The coating composition comprises the following components in parts by mass: 48 parts of resin B; 0.5 part of zirconate coupling agent; 0.1 part of fatty a...

Embodiment 3

[0051] (1) The organic hydrophilic resin C for an odorless hydrophilic coating comprises the following components by mass: 10 parts of sodium methacrylate; 10 parts of allylsulfonic acid; 2 parts of IBOA; 0.1 part of potassium persulfate; 5 parts of ethanol portion; water balance.

[0052] Dissolve potassium persulfate in water to make a 0.1% initiator solution, add remaining water and ethanol to the reaction kettle, heat to 75°C, add sodium methacrylate, allyl sulfonic acid and IBOA while stirring, wait until After stirring evenly, start to add the initiator solution dropwise, finish the dropwise addition within 1 hour, then continue to heat and stir for 6 hours, and after cooling, an organic hydrophilic resin C for an odorless hydrophilic coating is obtained, with a molecular weight of 500,000.

[0053] (2) The coating composition comprises the following components in parts by mass: 50 parts of resin C; 0.2 parts of aluminate coupling agent; 0.2 parts of fatty acid polyoxyet...

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Abstract

The invention belongs to the technical field of coatings, and discloses an organic hydrophilic resin for an odorless hydrophilic coating, a preparation method thereof, and a coating composition and application based on the same. The coating composition forms an odorless organic coating with excellent hydrophilicity on the metal surface, and does not produce peculiar smell during baking curing and post-processing, and can be applied to the field of metal surface treatment, especially the surface treatment of aluminum foil, such as Surface treatment of air-conditioning heat exchanger fin aluminum foil. The composition and mass parts formula of the resin are as follows: 5-20 parts of (meth)acrylic acid (ester) monomer; 2-10 parts of sulfonic acid monomer; 0.1-2 parts of adhesion-promoting monomer; 0.1-2 parts of initiator parts; 1 to 10 parts of solvent; the balance of water; the total amount of the above components is 100 parts by mass. In the present invention, monomers for improving adhesion are copolymerized in resin, and a metal coupling agent is compounded to obtain a coating composition based on the above resin, which ensures coating adhesion and hydrophilicity and simultaneously realizes odorlessness.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an organic hydrophilic resin for an odorless hydrophilic coating, a preparation method thereof, and a coating composition and application based thereon. The coating composition forms an odorless organic coating with excellent hydrophilicity on the metal surface, and does not produce peculiar smell during baking curing and post-processing, and can be applied to the field of metal surface treatment, especially the surface treatment of aluminum foil, such as Surface treatment of air-conditioning heat exchanger fin aluminum foil. Background technique [0002] Most of the fin materials used in air-conditioning heat exchangers are coated aluminum foil, and hydrophilic coating is currently the most commonly used coating treatment method. Its main function is to prevent condensed water from forming bridges between the fins and blocking the air path during the operation of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/14C08F220/06C08F228/02C08F220/28C08F283/06C09D125/18C09D133/02C09D143/00C09D133/14C09D151/08
Inventor 陈兴耀黄艳轶李月峰金兴菊魏小飞
Owner GUANGZHOU HUMAN CHEM
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