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Silicone adhesive composition and use thereof

A technology of silicone adhesive and composition, applied in the direction of film/sheet-like adhesive, adhesive, pressure-sensitive film/sheet, etc., can solve problems such as use limitation, achieve performance improvement, easy industrialization, elongation excellent rate

Active Publication Date: 2021-08-20
DOW TORAY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, polysiloxane-based pressure-sensitive adhesives are usually commercialized by dissolving them in organic solvents, so their uses are limited.

Method used

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  • Silicone adhesive composition and use thereof
  • Silicone adhesive composition and use thereof
  • Silicone adhesive composition and use thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0156] The method for preparing the silicone adhesive composition of the present invention is not particularly limited, and is performed by uniformly mixing the respective components. A solvent may be added as needed, and it may be prepared by mixing at a temperature of 0 to 200°C using a known stirrer or kneader.

[0157] The polyorganosiloxane composition of the present invention forms a coating film by coating on a base material, and heats it at a temperature of 80 to 200°C, preferably at a temperature of 90 to 190°C to form a cured product. As the coating method, gravure coating (gravure coat), offset coating (offset coat), gravure offset coating (offset gravure), roll coating, reverse roll coating, air knife coating, curtain coating and comma coating can be exemplified Blade coating.

[0158] [Range of pressure-sensitive adhesiveness and adhesion]

[0159] The silicone adhesive composition of the present invention is characterized in that a cured layer obtained by curin...

Embodiment 1～11、 comparative example 1～3

[0201] Examples and comparative examples of the present invention are described below. In addition, "making it harden" in each Example / Comparative Example means that each composition is completely hardened by each hardening condition.

[0202] (Preparation of Curing Reactive Silicone Adhesive Composition)

[0203] Using the components shown in Table 1, the curing-reactive silicone adhesive compositions shown in Examples and Comparative Examples were prepared. In addition, all % in Table 1 is mass %.

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Abstract

Provided are: a silicone adhesive composition which has a viscosity allowing the composition to be applied even when a solvent content is low, and which has excellent curability through a hydrosilylation reaction, has practically sufficient adhesive force by curing, ensures that a cured adhesive layer has excellent in mechanical strength and elongation and forms a pressure-sensitive adhesive layer having practically sufficient adhesiveness; and a use thereof. This silicone adhesive composition contains: (A) a cyclic organopolysiloxane having at least two aliphatic unsaturated carbon-carbon bond-containing groups only at a molecular chain end thereof; (B) a linear organohydrogenpolysiloxane having silicon bonded hydrogen atoms only at both molecular chain ends thereof; (C) an organopolysiloxane resin; and (D) an organopolysiloxane having at least one aliphatic unsaturated carbon-carbon bond-containing group at a site other than a molecular chain end thereof, and having at least three aliphatic unsaturated carbon-carbon bond-containing groups in a molecule, wherein the ratio of the number of moles of the silicon bonded hydrogen atoms in component (B) to the number of moles of the aliphatic unsaturated carbon-carbon bond-containing groups in components (A) and (D) is within a range of 0.70-1.30, and the substance amount in the aliphatic unsaturated carbon-carbon bond-containing group of component (D) in a total of 100 g of components (A)-(D) in the composition is within a range of 0.001-0.030.

Description

technical field [0001] The present invention relates to a silicone adhesive composition. Furthermore, the present invention relates to uses such as an adhesive layer obtained by curing the composition, an elastic adhesive member, a laminate including the adhesive layer obtained by curing the composition, and the like. Background technique [0002] Compared with acrylic and rubber-based pressure-sensitive adhesive compositions, polysiloxane-based pressure-sensitive adhesive compositions are superior in electrical insulation, heat resistance, cold resistance, and adhesion to various adherends. Excellent, so it is used for heat-resistant adhesive tapes, electrical insulating adhesive tapes, heat-sealing tapes, plating masking tapes, etc. These polysiloxane-based pressure-sensitive adhesive compositions are classified into an additional reaction-curable type, a condensation reaction-curable type, a peroxide-curable type, and the like according to the curing mechanism. Since it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J183/05C09J183/07C09J7/38
CPCC09J183/04C09J7/38C09J2483/00C09J2203/318C09J2301/312C08G77/20C08G77/12C08G77/70C08L83/04C08L83/00C09J7/20C09J2203/326C09J7/29C09J2301/302C09J183/06
Inventor J·小德格罗特古川晴彦饭村智浩E·S·蒋E·乔弗尔
Owner DOW TORAY CO LTD