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A kind of hydrocarbon-based modified mdq type silicone resin and its preparation method and application

A silicone resin and modified technology, applied in the direction of coating, etc., can solve the problems of not meeting high adhesion performance and low peeling performance at the same time, and achieve the effect of small peeling force and good adhesion

Active Publication Date: 2022-05-03
GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the problem of high adhesion performance and low peeling performance that cannot be satisfied simultaneously in the existing release agent, and to provide a kind of hydrocarbon-based modified MDQ type silicone resin, which is used as a release agent additive

Method used

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  • A kind of hydrocarbon-based modified mdq type silicone resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a hydrocarbon-modified MDQ type silicone resin, which is prepared according to the following method:

[0038] In the reaction equipment equipped with a stirrer, a thermometer, and a reflux condenser, add 670 parts by mass of tetramethyldihydrodisiloxane (10 mol of silicon hydrogen), 1344 parts by mass of n-octene (12 mol of C=C double bonds), Karstedt 2.0 parts by mass of the catalyst (with a Pt content of 10 ppm), reflux reaction at 65-70° C. for 2 hours, and then evacuated at 160° C. / 10 mmHg for 2 hours to obtain dioctyltetramethyldisiloxane.

[0039] Dioctyltetramethyldisiloxane (2mol) of 716 parts by mass and 208 parts of ethyl orthosilicate (1

[0040] mol), 240 parts by mass (4mol) of acetic acid, reflux reaction at 70-75°C for 4 hours, and then vacuumize at 160°C / 10mmHg for 2 hours to obtain octyl-modified polysiloxane with Q-type structure.

[0041] React 776 parts by mass of octyl-modified polysiloxane (1mol) with Q-type structure, 533...

Embodiment 2

[0044] This embodiment provides a hydrocarbon-modified MDQ type silicone resin, which is prepared according to the following method:

[0045] In the reaction equipment equipped with a stirrer, a thermometer, and a reflux condenser, add 670 parts by mass of tetramethyldihydrodisiloxane (10 mol of silicon hydrogen), 2016 parts by mass of dodecene (12 mol of C=C double bond), Karstedt Catalyst 2.7 parts by mass (Pt content 10ppm), reflux reaction at 65-70°C for 2 hours, and then evacuated at 160°C / 10mmHg for 2 hours to obtain dodecyltetramethyldisiloxane.

[0046]940 mass parts of dodecyltetramethyldisiloxane (2mol) and 208 parts (1mol) of ethyl orthosilicate, 240 mass parts (4mol) of acetic acid, reflux reaction at 70-75 ° C for 4 hours, and then Vacuum at 160° C. / 10 mmHg for 2 hours to obtain dodecyl-modified polysiloxane with Q-type structure.

[0047] 1000 parts by mass of dodecyl-modified polysiloxane (1mol) with Q-type structure and 11864 parts by mass of octamethylcyclote...

Embodiment 3

[0050] This embodiment provides a hydrocarbon-modified MDQ type silicone resin, which is prepared according to the following method:

[0051] In the reaction equipment equipped with a stirrer, a thermometer, and a reflux condenser, add 670 parts by mass of tetramethyldihydrodisiloxane (10 mol of silicon hydrogen), 2692.8 parts by mass of hexadecene (12 mol of C=C double bonds), Karstedt Catalyst 3.4 parts by mass (Pt content 10ppm), reflux reaction at 65-70°C for 2 hours, then evacuated at 160°C / 10mmHg for 2 hours to obtain hexadecyltetramethyldisiloxane.

[0052] 1165.6 parts by mass of hexadecyltetramethyldisiloxane (2mol) and 208 parts (1mol) of ethyl orthosilicate, 240 parts by mass (4mol) of acetic acid, were refluxed at 70-75°C for 4 hours, and then Vacuum at 160° C. / 10 mmHg for 2 hours to obtain a hexadecyl-modified polysiloxane with a Q-type structure.

[0053] 1224 parts by mass of hexadecyl-modified polysiloxane (1mol) of Q-type structure and 5392 parts by mass of o...

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Abstract

The invention provides a hydrocarbon group modified MDQ type silicone resin and its preparation method and application. Hydrocarbyl modified MDQ type silicone resin of the present invention, its chemical structure is represented by MDQR, wherein, M is Me 3 SiO 1 / 2 A chain segment composed of functional groups, D is Me 2 A chain segment composed of SiO functional groups, Q is SiO 4 / 2 Composed of chain segments; R is a hydrocarbon group with 8 to 20 carbon atoms; wherein, the molar ratio of each functional group in the hydrocarbon group modified MDQ type silicone resin is Q:D:M:R=1:80~800:0 ~3:1~4; the molecular weight of the hydrocarbon-modified MDQ type silicone resin is 6000~60000. The release agent prepared by using the hydrocarbon-modified MDQ silicone resin of the present invention has a very small peeling force, and the coating amount is 0.8-1.2g / m 2 In the case of , the peel force is lower than 20mN / 25mm, and it has good adhesion, and the residual adhesion rate is greater than 80%.

Description

technical field [0001] The invention belongs to the technical field of organosilicon, and in particular relates to a hydrocarbon-modified MDQ type silicone resin and a preparation method and application thereof. Background technique [0002] Coating release agent on the surface of plastic film, paper and other substrates, and making release film, release paper and other release products after curing. [0003] The release coating is a layer of isolation layer applied between the substrate and the pressure-sensitive adhesive to prevent the pressure-sensitive adhesive on the pressure-sensitive composite product (such as label, tape) from sticking to the substrate. The adhesive force between the adhesive and the substrate ensures that the pressure-sensitive adhesive can be peeled off from the substrate smoothly, but the label will not fall off or the release film will not be detached due to too low peeling force. Release coatings can also be used in the fields of processing ind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/04C08G77/06C09D183/04C08J7/043C08L67/02
CPCC08G77/04C08G77/06C09D183/04C08J7/0427C08G77/70C08J2367/02
Inventor 黄振宏武振刚邓俊杰
Owner GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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