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A kind of organosilicon leveling agent that can improve coating recoating performance and its application

A technology of silicone leveling agent and coating, applied in the field of silicone leveling agent, can solve the problems of poor overcoating performance and poor adhesion of coatings

Active Publication Date: 2021-11-09
ZHUHAI DONGCHENG UV MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing silicone leveling agent is mainly used as a component to improve its leveling performance in coatings, etc., although it can also improve the effects of slipping, anti-shrinkage, and anti-blocking to a certain extent, but due to silicone The silicon atoms in the leveling agent are easy to migrate and arrange on the surface of the coating, resulting in poor recoating performance of these coatings, and poor adhesion between each layer when multiple layers of coatings are required

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 A silicone leveling agent is provided, its preparation raw materials include hydrogen-containing silicone oil and functional monomer; the silicone leveling agent is prepared by the following method: 20g of hydrogen-containing silicone oil, 9.8g of functional monomer and 0.005g of platinum Add the rhodium complex into the reactor, add 120ml of acetone and ethyl acetate mixed solvent (volume ratio 3:2) and stir to dissolve, and react at 60°C for 4 hours, cool down to room temperature, concentrate and dry.

[0042] The hydrogen-containing silicone oil is IOTA203 low hydrogen-containing silicone oil (hydrogen content 0.36wt%) from Anhui Aiyota Silicone Oil Co., Ltd.; the functional monomer is trifluoroethyl methacrylate (CAS: 352-87-4) .

[0043] This example also provides a coating with good recoating performance using the above-mentioned organic silicon leveling agent. 3.

[0044] Described acrylic resin is the RP002 type acrylic resin of BASF; Described epox...

Embodiment 2

[0045] Example 2 Provide a kind of silicone leveling agent, its preparation raw material comprises hydrogen-containing silicone oil and functional monomer; Described silicone leveling agent is prepared by the following method: 20g hydrogen-containing silicone oil, 6.5g functional monomer and 0.002g platinum Add the rhodium complex into the reaction kettle, add 120ml of acetone and ethyl acetate mixed solvent (volume ratio 3:2) and stir to dissolve, and react at 60°C for 3 hours, cool down to room temperature, concentrate and dry.

[0046] The hydrogen-containing silicone oil is IOTA203 low hydrogen-containing silicone oil (0.75 wt% hydrogen content) from Anhui Aiyota Silicone Oil Co., Ltd.; the functional monomer is trifluoroethyl methacrylate (CAS: 352-87-4) .

[0047] This example also provides a coating with good recoating performance using the above-mentioned organic silicon leveling agent. 8.

[0048] Described acrylic resin is the RP002 type acrylic resin of BASF; De...

Embodiment 3

[0049] Example 3 Provide a kind of silicone leveling agent, its preparation raw material comprises hydrogen-containing silicone oil and functional monomer; Described silicone leveling agent is prepared by following method: 20g hydrogen-containing silicone oil, 8g functional monomer and 0.004g platinum-rhodium Add the complex to the reaction kettle, add 120ml of acetone and ethyl acetate mixed solvent (volume ratio: 3:2), stir and dissolve, and react at 60°C for 3 hours, cool down to room temperature, concentrate and dry.

[0050] The hydrogen-containing silicone oil is IOTA203 low hydrogen-containing silicone oil (0.5 wt% hydrogen content) from Anhui Aiyota Silicone Oil Co., Ltd.; the functional monomer is trifluoroethyl methacrylate (CAS: 352-87-4) and glycidyl methacrylate (CAS: 106-91-2), the weight ratio is 0.8:1.

[0051] This example also provides a coating with good recoating performance using the above-mentioned organic silicon leveling agent. 3.

[0052] Described...

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PUM

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Abstract

The invention relates to the technical field of coatings, in particular to a silicone leveling agent capable of improving the overcoating performance of coatings and an application thereof. The coating includes a silicone leveling agent, and the preparation raw materials of the silicone leveling agent include hydrogen-containing silicone oil and functional monomers; the molecular structure of the functional monomers contains unsaturated double bonds and ester groups. The silicone leveling agent has good leveling performance, which can make all kinds of coatings level in a short time, shorten the construction time and improve the efficiency. It can also make the paint have a remarkable recoating effect, and can be applied to multi-layer painting processes such as brushing primers, intermediate paints, and top coats.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a silicone leveling agent capable of improving the overcoating performance of coatings and an application thereof. Background technique [0002] Leveling agent is a commonly used coating additive, which can promote the formation of a flat, smooth and uniform coating film during the drying and film forming process of the coating. A class of substances that can effectively reduce the surface tension of coating fluids and improve their leveling and uniformity. It can improve the permeability of the coating solution, reduce the possibility of spots and marks when brushing, increase the coverage, and make the film formation uniform and natural. Polyether polyester modified organosiloxane belongs to comb structure organopolysiloxane. Its compatibility is adjusted by polyether and polyester, and the longer the chain, the better the compatibility. The polyether modification is the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/385C09D7/47C09D133/04C09D163/00
CPCC08G77/385C09D133/04C09D7/47C08L63/00C08L83/08
Inventor 苏勇强刘强黄乐生
Owner ZHUHAI DONGCHENG UV MATERIALS