Mold release agent composition for polyorganosiloxane adhesive and mold release plate using the composition

A polysiloxane and adhesive technology, applied in the direction of non-polymer adhesive additives, adhesive additives, film/sheet adhesives, etc., can solve the problem of increased peeling force over time

Active Publication Date: 2005-03-09
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve these problems, it is proposed that a phenyl group-containing polysiloxane adhesive and an addition reaction type polysiloxane release agent be combined so that it can be peeled off (for example, refer to Patent Document 4), but there are Problems such as increased peeling force over time

Method used

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  • Mold release agent composition for polyorganosiloxane adhesive and mold release plate using the composition
  • Mold release agent composition for polyorganosiloxane adhesive and mold release plate using the composition
  • Mold release agent composition for polyorganosiloxane adhesive and mold release plate using the composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] With 100 parts of fluoroalkyl-modified polydimethylsiloxane represented by the following formula as component (A) and label 1 in Table 1, as component (B), use trimethylsilane at both ends of the molecular chain Group-terminated, containing MeHSiO 2 / 2 23 parts of polymethylhydrogensiloxane with 95 mol% of units represented and a viscosity of 25 mPa·s, and 2 parts of 3-methyl-1-butyn-3-ol as component (D), mixed with toluene and heptane 900 parts of a mixture of alkanes (1:1 by weight) were diluted. Before coating on the substrate, a complex salt of platinum and vinylsiloxane as the component (C) was added in an amount of 100 ppm in terms of platinum to prepare a composition. The composition was treated under the aforementioned conditions, and the results are shown in Table 2.

Embodiment 2

[0080] 50 parts of the fluoroalkyl-modified polydimethylsiloxane represented by the following formula and the label 2-1 in Table 1 as the component (A), the fluoroalkane represented by the following formula and the label 2-2 in Table 1 50 parts of base-modified polydimethylsiloxane, as (B) component, both ends of the molecular chain are terminated with trimethylsilyl groups, containing MeHSiO 2 / 2 4 parts of polymethylhydrogensiloxane with 95 mol% units and a viscosity of 25 mPa·s; 2 parts of 3-methyl-1-butyn-3-ol as (D) component, used as (E) The ingredients were diluted with 900 parts of a mixture of toluene and heptane (1:1 by weight). Before coating on the substrate, a complex salt of platinum and vinylsiloxane as the component (C) was added in an amount of 100 ppm in terms of platinum to prepare a composition. The composition was treated under the aforementioned conditions, and the results are shown in Table 2.

Embodiment 3

[0082] With 100 parts of fluoroalkyl-modified polydimethylsiloxane represented by the following formula and number 3 in Table 1 as component (A), as component (B), use trimethylsilane at both ends of the molecular chain Group-terminated, containing MeHSiO 2 / 2 23 parts of polymethylhydrogensiloxane with 95 mol% units and a viscosity of 25 mPa·s, 2 parts of 3-methyl-1-butyn-3-ol as component (D), using toluene and heptane (by weight ratio 1:1) 900 parts of the mixture were diluted. Before coating on the substrate, a complex salt of platinum and vinylsiloxane as the component (C) was added in an amount of 100 ppm in terms of platinum to prepare a composition. Table 2 shows the results of treating the composition under the aforementioned conditions.

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Abstract

The release agent composition for a silicone adhesive comprises the following (A)-(D): (A) 100 pts.wt. fluoroalkyl-modified polydimethyl siloxane having at least two alkenyl groups and at least one fluoroalkyl group in one molecule, 0.02-0.20 mol / 100g alkenyl group content, 0.05-0.50 mol / 100g fluoroalkyl group content and 50-100,000 mPa*s viscosity at 25[deg.]C; (B) a polyorganohydrogensiloxane having at least three hydrogen atoms bonding to silicon atoms in one molecule, wherein the mol number of the hydrogen atoms bonding to the silicon atoms is equivalent to 0.5-5 times mol of the alkenyl group in the component (A) by pts.wt.; (C) a catalytic amount of a platinum group compound; and (D) 0.01-10 pts.wt. reaction controller.

Description

technical field [0001] The present invention relates to an addition-curable polysiloxane composition in which a base polymer containing siloxane units having fluorinated alkyl. The present invention also relates to a release agent for polysiloxane adhesives, characterized in that the base polymer used is blended with polymers having a high ethylene value and a low ethylene value, so that the peeling force is light and stable over time. Background technique [0002] A method of producing a material exhibiting releasability to adhesive substances such as pressure-sensitive adhesives by forming a releasable cured film on the surface of various substrates such as paper, plastic film, and synthetic fiber cloth has been known. As a material for forming such a peelable cured film, polysiloxane compositions are often used. For example, in Patent Documents 1 and 2, polyorganosiloxanes and polyorganohydrogensiloxanes containing alkenyl groups and polyorganohydrogensiloxanes are propo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/00C08G77/04C08J5/18C08K3/10C08L83/05C08L83/08C09J7/00C09J7/02C09J11/06C09J183/04
CPCC08G77/04C08J5/18C08L83/04C09J7/20
Inventor 小川匡彦黑田泰嘉
Owner SHIN ETSU CHEM IND CO LTD
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