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Polyether modified organosilicon acrylate, preparation method thereof and release agent

A polyether modification and acrylate technology, applied in the field of release agents, can solve the problems of not achieving the expected effect, affecting the stability of the formula, and poor compatibility.

Active Publication Date: 2020-04-21
SHANGHAI PHICHEM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when using traditional silicone acrylate to adjust the required heavy peeling effect, the combination of silicone resin and non-silicone resin is usually used to increase the peeling force. The more non-silicone resin is used, the heavier the peeling force will be. , but due to the poor compatibility between silicone resin and non-silicone resin, the use of this method has great limitations and will affect the stability of the formula
However, if the heavy peeling effect is obtained by reducing the amount of silicon coating, it may cause uneven coating and the risk that the expected effect cannot be achieved

Method used

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  • Polyether modified organosilicon acrylate, preparation method thereof and release agent
  • Polyether modified organosilicon acrylate, preparation method thereof and release agent
  • Polyether modified organosilicon acrylate, preparation method thereof and release agent

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preparation example Construction

[0043] see figure 1 , the embodiment of the present invention also provides a preparation method of polyether modified silicone acrylate, comprising:

[0044] S100, provide low hydrogen silicone oil, the chemical structure of the low hydrogen silicone oil is:

[0045]

[0046] Wherein, 4n is any integer within the range of 30 to 80.

[0047] S200, under the conditions of an inert gas, the first catalyst, and the first polymerization inhibitor, react low-hydrogen-containing silicone oil with allyl polyoxyalkylene epoxy ether to obtain epoxy hydrocarbon-based silicone, the low-hydrogen-containing silicone oil The molar ratio of the silicon-hydrogen bond to the carbon-carbon double bond in the allyl polyoxyalkylene epoxy ether is 1:1-1:2, and the structure of the allyl polyoxyalkylene epoxy ether is:

[0048]

[0049] Wherein, both M and N are any integers within the range of 0-32, and M+N is any integer within the range of 4-32.

[0050] S300, under the conditions of the ...

Embodiment 1

[0077] Add 1 mass part of tetramethyldihydrodisiloxane, 15.6 mass parts of octamethylcyclotetrasiloxane and 1 mass part of solid acid catalyst Amberlyst 35 to a 500 ml three-necked reaction flask equipped with mechanical stirring, condenser and thermometer , control the temperature of the oil bath at 30°C, and stir for 12h. Use a Buchner funnel to filter out the solid acid catalyst, then distill off low boiling point substances at 120°C and 1.3kPa, and finally filter to obtain a colorless and transparent low-hydrogen silicone oil with a number average relative molecular weight of 4700.

[0078] Weigh 250g of the above-mentioned low hydrogen-containing silicone oil, add 121.42g of allyl polyoxyalkylene epoxy ether (molecular weight is 560) (SiH:C=C molar ratio is 1:1), 1.486g of isopropyl chloroplatinic acid Alcohol solution (platinum accounts for 8ppm of the total mass of low-hydrogen silicone oil and allyl polyoxyalkylene epoxy ether), blow nitrogen and stir, control the temp...

Embodiment 2

[0082] Add 1 part of tetramethyldihydrodisiloxane, 11 parts of octamethylcyclotetrasiloxane and 1 part of solid acid catalyst Amberlyst 35 to a 500 ml three-necked reaction flask equipped with a mechanical stirrer, a condenser tube and a thermometer to control oil The bath temperature was at 30°C and stirred for 12h. Use a Buchner funnel to filter out the solid acid catalyst, then distill off low-boiling substances at 120°C and 1.3kPa, and finally filter to obtain a colorless and transparent low-hydrogen silicone oil with a number average relative molecular weight of 3300.

[0083] Weigh 250g of the above-mentioned low hydrogen-containing silicone oil, add 143g allyl polyoxyalkylene epoxy ether (molecular weight is 560) (SiH:C=C molar ratio is 1:1), 1.493g chloroplatinic acid isopropanol solution (Platinum accounts for 8ppm of the total mass of low-hydrogen silicone oil and allyl polyoxyalkylene epoxy ether), blow nitrogen and stir, and control the temperature at 80°C. After 2...

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Abstract

The invention provides polyether modified organosilicon acrylate and a preparation method thereof, and a release agent. The chemical structural formula of the polyether modified organosilicon acrylateis shown in the specification, wherein Me is methyl, the chemical structural formula of R is shown in the specification, 4n is any integer in the range of 30-80, M and N are any integers in the rangeof 0-32, and M+N is any integer in the range of 4-32. The polyether modified organosilicon acrylate not only can be subsequently applied to the release agent to realize curing, but also can provide enough release effect in a release agent formula.

Description

technical field [0001] The invention relates to the technical field of release agents, in particular to a polyether-modified silicone acrylate, a preparation method thereof, and a release agent. Background technique [0002] The release agent is to prevent the formed composite product from sticking to the mold, and a type of isolation film is applied between the product and the mold, so that the product can be easily released from the mold, while ensuring the surface quality of the product and the mold are intact. Organosilicon compounds have unique properties such as good oxidation resistance, low toxicity, low surface energy, good wettability with substrates, wide range of temperature applications, low migration to adhesives, and incompatibility with organic polymers. It has become a release material with excellent performance and is widely used in the anti-adhesive processing technology of various paper products. Silicone anti-adhesive coating is currently the most widely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46C08G77/12C08G77/08B29C33/64
CPCC08G77/46C08G77/12C08G77/08B29C33/64
Inventor 吴胜密江彭胜刘陈红张志鹏孙培旸
Owner SHANGHAI PHICHEM MATERIAL CO LTD
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