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Curable silicone composition and applications and uses thereof

A composition and organosilicon technology, which is applied in the direction of medical preparations containing active ingredients, cosmetics, and dressing preparations, etc., can solve the problems of complex film preparation, high cost, and large-scale and large-scale manufacturing processes.

Inactive Publication Date: 2019-02-05
MOMENTIVE PERFORMANCE MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although multilayer thin-film technologies offer good barrier properties and are used for electronic device packaging purposes, the complexity and high cost of thin-film preparation do not make them feasible in large-area and large-scale manufacturing processes

Method used

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  • Curable silicone composition and applications and uses thereof
  • Curable silicone composition and applications and uses thereof
  • Curable silicone composition and applications and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0161] Embodiment 1: the preparation of component (A-1)

[0162] A norbornene-terminated norbornenyl ethyl block copolymer (A-1) having a molecular weight of 3 kD was synthesized according to the following scheme:

[0163] Under nitrogen atmosphere, 100 mL of toluene and 5-vinylbicyclo[2.2.1]hept-2-ene (128.7 g , 1.07 mol). To this solution was added 0.289 g of Karstedt's catalyst (15 ppm, 2% by weight Pt). The whole apparatus was kept in an oil bath and the reaction temperature was kept at 50°C. 3-Phenyl-1,1,3,3,5-pentamethyltrisiloxane (257.51 g, 0.95 mol) was added dropwise in the dropping funnel over 1 hour. The reaction temperature was then raised to 80 °C and continued until all hydride was consumed. After the hydrosilylation polymerization was complete, unreacted starting materials, volatile compounds and solvents were stripped under reduced pressure. The final product was obtained in quantitative yield as a yellow liquid, decolorized with activated carbon, and the...

Embodiment 2

[0165] Embodiment 2: the preparation of component (A-2)

[0166] A norbornene-terminated phenylmethylsilicone norbornenylethyl block copolymer (component A-2) having a molecular weight of 140 kD was synthesized similarly to the method described in A-1.

[0167] Briefly, 150 mL of toluene and 5-vinylbicyclo[2.2.1]hept-2-ene (94 g, 0.78 mol) were added to a 500 mL three-neck round bottom flask. To this solution was added 0.225 g of Karstedt's catalyst (15 ppm, 2% by weight Pt). 3-Phenyl-1,1,3,3,5-pentamethyltrisiloxane (200 g, 0.74 mol) in a dropping funnel was added dropwise to the reaction mixture at 50° C. over 1 hour. The reaction temperature was then raised to 80 °C and continued until all hydride was consumed. After the hydrosilylation polymerization was complete, unreacted starting materials, volatile compounds and solvents were stripped under reduced pressure. The final product was obtained in quantitative yield as a yellow liquid, which was decolorized with activated...

Embodiment 3

[0169] Embodiment 3: the preparation of component (B-1)

[0170] Hydride terminated phenylmethyl silicone norbornenyl ethyl block copolymer (component B) was synthesized according to the following scheme:

[0171]Under a nitrogen atmosphere, 100 mL of toluene and 5-vinylbicyclo[2.2.1]hept-2-ene (200 g, 1.66mol). To this solution was added 0.529 g of Karstedt's catalyst (15 ppm, 2% by weight Pt). The whole apparatus was kept in an oil bath and the reaction temperature was kept at 50°C. 3-Phenyl-1,1,3,3,5-pentamethyltrisiloxane (506.47 g, 1.87 mol) was added dropwise in a dropping funnel over 1 hour. The reaction temperature was then raised to 80°C and the reaction was continued until all the 5-vinylbicyclo[2.2.1]hept-2-ene was consumed. After the hydrosilylation polymerization was complete, unreacted starting materials, volatile compounds and solvents were stripped under reduced pressure. The final product was obtained in quantitative yield as a yellow liquid, which was de...

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Abstract

A curable composition comprising (a) an organopolysiloxane comprising a curable functional group; (b) a cross-linker comprising a silyl hydride group or a thiol group; (c) a reaction accelerator; (d)optionally an inhibitor; and (e) optionally other additives. The curable composition exhibits high refractive index and optical clarity. The curable composition can be used to prepare a cured materialthat exhibits high refractive index, optical clarity, crack resistance, and low moisture vapor permeability.

Description

technical field [0001] The present invention relates to a curable silicone composition. In particular, the present invention relates to curable silicone compositions comprising organopolysiloxanes. Curable silicone compositions can be used to form cured materials that can exhibit one or more of high refractive index, good moisture vapor transmission, high heat resistance, crack resistance, and optical clarity. The curable compositions can be used in a variety of applications, including as sealants, encapsulants, barrier coatings, etc., and in a variety of environments including electronic devices. Background technique [0002] Many next-generation flexible printed electronic displays, such as organic light-emitting diodes (OLEDs), organic photovoltaic displays (OPVs), organic thin-film transistors (OTFTs), etc., are extremely sensitive to atmospheric moisture and oxygen, which limits the lifetime of display devices and their widespread use. commercialize. [0003] An exis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/50C08L83/14A61K8/89
CPCC08K5/56C08G77/50C08L83/00C08L83/14A61K8/891A61Q5/02A61Q5/12A61Q17/04A61K8/89A61K2800/81C08G77/80
Inventor 普拉纳比什·杜塔沙什卡拉·因杜哈拉·斯瓦米阿莫尔·穆利达劳·肯达勒曼纳夫·古普塔阿南塔拉曼·达纳巴兰
Owner MOMENTIVE PERFORMANCE MATERIALS INC
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