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Curable reactive silicone composition, cured product thereof and uses of composition and cured product

A technology of curing reaction and composition, which is applied in the fields of curing reactive silicone composition and its cured product, and heating and melting adhesive materials, which can solve the problems of low adhesiveness of the adherend and achieve high adhesiveness, Excellent gap filling performance and high adhesive strength

Active Publication Date: 2021-07-23
DOW TORAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In Patent Document 1, a silicone-based pressure-sensitive adhesive composition with a high solid content concentration containing such a high-energy ray-activated catalyst is described, but the composition has adhesion to an adherend in an uncured state. The problem of low connectivity
[0005] On the other hand, in Patent Document 2, a composition containing a linear polyorganosiloxane and a branched polyorganosiloxane curable by a photoactive catalyst is described, but the composition exists in The problem of low adhesion to adherends in the cured state

Method used

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  • Curable reactive silicone composition, cured product thereof and uses of composition and cured product
  • Curable reactive silicone composition, cured product thereof and uses of composition and cured product
  • Curable reactive silicone composition, cured product thereof and uses of composition and cured product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～9、 comparative example 1～8

[0390] Using the following components, each component was heat-mixed uniformly with the composition (parts by mass) shown in Table 1, and the hardening reactive silicone composition of the Example and the comparative example was prepared. In each structural formula, Me is a methyl group, and Vi is a vinyl group.

[0391] As (A) component, the following components were used.

[0392] a1-1: (Me 3 SiO 1 / 2 ) 0.46 (SiO 4 / 2 ) 0.54 (HO 1 / 2 ) 0.05

[0393] a1-2: (Me 3 SiO 1 / 2 ) 0.48 (SiO 4 / 2 ) 0.52 (HO 1 / 2 ) 0.04

[0394] a2-1: (ViMe 2 SiO 1 / 2 ) 0.046 (Me 3 SiO 1 / 2 ) 0.394 (SiO 4 / 2 ) 0.56 (HO 1 / 2 ) 0.05

[0395] As (B) component, the following components were used. In addition, the following components starting with B'-1 were used as comparative components.

[0396] B-1: ViMe 2 SiO(Me 2 SiO) 151 SiMe 2 Vi

[0397] B-2: ViMe 2 SiO(Me 2 SiO) 830 SiMe 2 Vi

[0398] B'-1: ViMe 2 SiO(Me 2 SiO) 45 SiMe 2 Vi

[0399] B'-2: ViMe 2 SiO(Me 2 SiO) 47...

Embodiment 10

[0410] The curable reactive silicone composition was prepared according to the following steps 1-4, and it was carried out until sheeting.

[0411] The configuration of the twin-screw extruder used for sheeting and the overall configuration of sheeting are shown in Figure 9 and Figure 10 .

[0412] [Step 1: The step of mixing (A) component and (B) component to obtain a hot-melt solid component]

[0413] Put 2.50 kg of xylene, 6.45 kg of (a1-1) component (white solid at 25°C), and (a2-1) component (white at 25°C) into a cylindrical metal tank (barrel). Solid state) 0.42 kg and (B-2) component 3.13 kg were dissolved and mixed at room temperature using a motor type stirring device.

[0414] The obtained solution was continuously fed at a rate of 10 kg / hr from an input portion provided on the most upstream side of a twin-screw extruder which continuously rotates the screws. Here, the set temperature of the input part was 150 degreeC. Simultaneously, a vacuum pump is used to...

Embodiment 11～19

[0427] The kneaded melts obtained in Examples 1 to 9 above were laminated between two peelable films. Next, the laminate was stretched between rolls controlled at a temperature of 80° C. to form a sheet made of a hot-melt curable reactive silicone composition with a thickness of 1 mm and laminated between two release films. The laminated body is cooled by air cooling.

[0428] As a result of separating the peelable film from the obtained laminate, a bubble-free, flat, homogeneous and transparent sheet made of a hot-melt curable reactive silicone composition was obtained.

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Abstract

The present invention provides a curable reactive silicone composition which has sufficient toughness and adhesive force to temporarily fix various base materials, even when in an uncured state, and has thermal melting properties, has excellent formability for example as a sheet, and furthermore rapidly cures as a result of high energy irradiation, enabling a high adhesive strength to be achieved; a method for producing a sheet of the compound; a cured product of the compound, having high adhesive strength due to pressure bonding; and uses of the above. A curable reactive silicone composition which comprises: (A) MQ resin; (B) a chain-structured organopolysiloxane which comprises at least two aliphatic unsaturated carbon-carbon bond-containing groups and which has a siloxane polymerization degree in the range of 80-3000; (C) organohydrogenpolysiloxane; and (D) a hydrosilylation catalyst that is activated by high energy irradiation, wherein the amount of component (A) included is 55-90 mass%, exclusive, of the total mass of components (A)-(C), the composition is nonfluxional at 25 DEG C, and has thermal melting properties.

Description

technical field [0001] The present invention relates to a curing reactive silicone (Silicone) composition and its cured product, a heat-melt adhesive material formed from the composition, a laminate using the composition or its cured product, and the like . Moreover, this invention also relates to the manufacturing method of the said laminated body. The invention also relates to a method of manufacturing a sheet formed from a cured reactive silicone composition. Background technique [0002] Silicone materials are used in various applications because of their excellent properties such as heat resistance, chemical resistance, and electrical insulation. Silicone materials can be formed on various substrates such as plastics, metals, glass, ceramics, paper, and wood, and are used in daily necessities, medical supplies, and electronic products. For example, a silicone material formed on a substrate is used as an adhesive material. Specifically, it is used as an adhesive for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08L83/05C09J7/38C09J11/06C09J183/04C09J183/05C09J183/07B32B27/06B32B27/28H01L31/048
CPCC08L83/04C09J7/38C09J183/04H01L31/048Y02E10/50C09J2483/00B32B7/12B32B2457/20B32B27/34B32B2255/26B32B29/08B32B2307/732B32B2250/20B32B27/285B32B15/14B32B9/005B32B15/082B32B27/32B32B27/38B32B2270/00B32B5/26B32B2457/12B32B27/365B32B29/02B32B27/10B32B27/12B32B2457/202B32B27/304B32B7/06B32B15/085B32B2255/10B32B5/024B32B27/16B32B2457/206B32B27/308B32B27/306B32B29/005B32B27/286B32B27/302B32B27/325B32B15/088B32B2605/18B32B2255/06B32B2457/204B32B2250/26B32B27/281B32B2255/02B32B27/36B32B2605/00B32B9/045B32B27/288B32B27/283B32B15/09B32B15/12B32B2255/12B32B27/08B32B2250/24B32B17/10C08G77/20C08K5/56C08L83/00C08G77/12B32B37/1207B32B38/0012B32B2038/0028B29C55/005B29C55/023B29K2083/00B29L2007/002B29L2009/00B32B17/10036B32B17/10798B32B17/10917B32B37/1284B32B38/06B32B2037/1215B32B2305/72B32B2307/54B32B2310/0806B32B2383/00C08L2203/16C08L2205/025C08L2205/03
Inventor 西嶋一裕中村昭宏古川晴彦吉武诚今泉彻尾崎弘一
Owner DOW TORAY CO LTD
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