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Hydroxyl polyether modified siloxane and preparation method thereof

A hydroxy polyether and siloxane technology, used in coatings, biocide-containing paints, antifouling/underwater coatings, etc., can solve problems such as difficult cleaning, strong adhesion of stains on the surface of the coating, and needs to be improved.

Active Publication Date: 2019-06-07
GUANGZHOU SILOK POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, polyether-modified silicone polymers are one of the key directions in the research of silicone additives for coatings. At present, the existing polyether-modified silicone polymers are used as leveling agents, hand feeling agents and surface treatment of pigments. The agent has been widely used, but the polyether modified organosilicon polymer currently used commercially still needs to be improved in its leveling performance and wear resistance. In addition, the coating surface has strong stain adhesion and is not easy to clean; the present invention Designed to provide a better hydroxypolyether modified siloxane, improving its scratch and abrasion resistance, and also has easy cleaning and leveling properties at the same time

Method used

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  • Hydroxyl polyether modified siloxane and preparation method thereof
  • Hydroxyl polyether modified siloxane and preparation method thereof
  • Hydroxyl polyether modified siloxane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1, the preparation of polymer 9

[0056]

[0057] The synthetic route is as follows:

[0058]

[0059] Reagents: Compound a-9 was purchased from Shenyao (Xianghe) Technology Co., Ltd.; Compound b-9 was prepared according to the method reported by Kuryla W C ([J].The Journal of Organic Chemistry,1965,30(11):3926-3929) ; Chloroplatinic acid was purchased from Shanghai Yansheng Co., Ltd.

[0060] Specific preparation method:

[0061] In the 1000mL four-necked flask with stirrer and thermometer, first add 400g of compound b-9 and 4mLspeier catalyst (1g chloroplatinic acid is dissolved in 120mL anhydrous isopropanol and fully stirred to obtain), N 2 Start stirring under protection, slowly increase the temperature to 90°C, activate at this temperature for 1.5 hours, then continuously drop 200g of compound a-9 into the system, control the reaction temperature between 100-110°C, and react after the dropwise addition 3-4 hours, continuous sampling for infrare...

Embodiment 2

[0065] Embodiment 2, the preparation of the cleanable wear-resistant topcoat containing compound 9

[0066] Reagents: UV resin and acrylate were purchased from Taiwan Changxing Resin, defoamer BYK141, dispersant BYK164, anti-sedimentation agent BYK204, and initiator BP-184 were purchased from Shanghai Buding Chemical Co., Ltd. Fully mix and disperse 600g of 100% UV resin, 50g of acrylate, 5g of defoamer BYK141, 8g of dispersant BYK164, and 20g of initiator BP-184; then add anti-scratch filler powder, anti-sedimentation powder, and matting powder 1 In the prepared mixture, continue to disperse evenly; add 25g of polymer 9 and 5g of anti-settling agent BYK204 into the mixture prepared in step 2, continue to disperse fully, and prepare a cleanable and wear-resistant topcoat.

Embodiment 3

[0067] Embodiment 3, abrasion resistance test

[0068] Comparative sample: The comparative sample was prepared according to the method described in Example 2 of patent CN102002316A.

[0069] Test sample: prepared according to the method described in Example 2.

[0070] Test method: According to the method of ASTM1044, put the grinding wheel CS-10F into the Tabor wear test device, rotate the sample to be evaluated for 500 revolutions under the applied load of 500g, compare the haze of the sample before and after the test, and calculate the haze change ( ΔH), the wear resistance was evaluated based on the following criteria: ΔH≤5.0, good wear resistance; 5.0<ΔH<10.0, poor wear resistance; 10.0≤ΔH, extremely poor wear resistance.

[0071] Test results: ΔH≤5.0 of the sample of the test example, good wear resistance; while 5.0<ΔH<10.0 of the sample of the comparative example, poor wear resistance.

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Abstract

The invention relates to the technical field of polymers, in particular to hydroxyl polyether modified siloxane and a preparation method thereof. The invention specifically relates to a polymer as shown in a formula (1), which has good waterproof effect, wear resistance and stain resistance and is suitable for being used in the polymer manufacturing industry.

Description

technical field [0001] The invention belongs to the technical field of polymer compounds, and in particular relates to the preparation and application of a hydroxyl polyether modified siloxane in the coating industry. Background technique [0002] Silicone additives have become an indispensable component in the field of polymers because they can improve the production process of polymer materials, maintain the storage stability of polymer materials, improve their construction technology, improve product quality, and endow coatings with some special functions. point. Reasonable and correct selection of silicone additives can reduce costs and improve benefits. Silicone additives used in coatings mainly include silicone oil emulsion or dispersion, silicone elastomer emulsion or dispersion, silicone resin, organic resin modified silicone resin, fluorosilicone polymer, polyether modified silicone polymer, etc. Their main functions in coatings are leveling, anti-scratch, anti-st...

Claims

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Application Information

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IPC IPC(8): C08G77/46C09D7/65C09D7/47C09D5/16
Inventor 孙东明罗文景梁凯付磊刘吉灵
Owner GUANGZHOU SILOK POLYMER
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