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UV curable silicone release agent

A technology of silicone and release agent, applied in the direction of coating, etc., can solve the problems of low yield, complicated reaction process, poor surface curing, etc., to achieve improved surface curing, good release effect, and good surface curing Effect

Active Publication Date: 2021-07-23
郝建强 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction process is relatively complicated, the yield is not high, and there is also the problem of poor surface curing in the case of thin layer coating

Method used

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  • UV curable silicone release agent
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  • UV curable silicone release agent

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Embodiment Construction

[0040]The UV-curable silicone release agent (photoswitchable silicone release agent) of the present invention has good storage stability at room temperature, and will not be cured by moisture when exposed to the air, but UV light can quickly cause moisture Curing and UV curing belong to the UV / moisture dual-curing system. Different from the ordinary UV / moisture dual-curing system, the photoswitchable silicone release agent described in the present invention will only cause moisture after UV irradiation. solidified.

[0041] In the UV-curable silicone release agent described in the present invention, the moisture curing catalyst employed therein may be a synthetic (meth)acryloyloxyalkylureido double-terminated polydimethylsiloxane, wherein Among the catalyst catalysts used:

[0042] Commonly used organotin compounds include: dibutyltin dilaurate, dibutyltin diacetate, dibutyltin diethylhexanoate, dibutyltin dioctoate, dibutyltin dimethylmaleate, dibutyltin maleate, dioctyltin ...

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Abstract

The invention discloses a UV-curable silicone release agent. The release agent has good storage stability at room temperature, and it will not be moisture-cured when exposed to the air, but UV light can quickly trigger moisture curing and UV curing. It belongs to the UV / moisture dual curing system, which is different from ordinary UV / Moisture dual-cure systems are different in that moisture curing is initiated only after UV exposure. The specific composition is (meth)acryloyloxyalkylureido double-capped polydimethylsiloxane, mercapto silicone oil, organotin catalyst capable of forming a complex with mercapto silicone oil, and a photoinitiator. Compared with ordinary UV-curable silicone, the release agent of the invention is beneficial to eliminate the polymerization inhibition effect of oxygen on the surface of the silicone, improve the surface curability of the silicone, and the cured product has a good release effect.

Description

technical field [0001] The invention belongs to the field of photocurable materials, and in particular relates to a UV-curable organic silicon release agent. Background technique [0002] Silicone release agent is the most commonly used release agent in the field of protective film. It is generally composed of vinyl silicone oil, hydrogen-containing silicone oil, platinum catalyst and solvent. It is coated on PET film and cured at a high temperature above 130 degrees. . Due to high curing temperature and high energy consumption, heat-labile substrates often affect product quality due to thermal deformation. [0003] UV curing silicone release agent is energy-saving and environmentally friendly, and the temperature rises less during the curing process. It is the best alternative to solve the problem of thermal deformation. There are two types of UV curing silicone release agents, cationic curing and free radical curing. Cationic curing type release agent is not affected by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08C09D5/20C08G77/388
CPCC08G77/388C08L2205/025C09D5/20C09D183/08C08L83/08
Inventor 郝建强
Owner 郝建强
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