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Organopolysiloxane composition

A technology of polysiloxane and hydrogen polysiloxane, which is applied in the field of organopolysiloxane compositions, can solve the problems of high volatility, impracticality, and unsuitability for organosilicon materials, and achieve excellent solubility and practicability High, low odor effect

Active Publication Date: 2020-06-26
SHIN ETSU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compounds having an isocyanide group, including the compounds described in these, are generally highly volatile and odorous substances. Considering the problem of odor during curing and after curing, they are not suitable as organic compounds for the above-mentioned applications. Additives in silicon materials
[0005] In addition, when controlling the reaction of various organopolysiloxane compositions according to the purpose, if the amount of the isonitrile compound added is small relative to the platinum, it is difficult to control the reaction, so excessive addition becomes necessary. Nitrile compounds, even in trace amounts, emit an odor and are therefore impractical
[0006] In Patent Document 10, a novel isocyanide compound modified with organosilicon is reported as a ligand for a catalyst for hydrosilylation reaction, but it is used for metals other than platinum, and the purpose is to improve the activity of the catalyst. , no studies have been conducted as a control agent for platinum catalysts

Method used

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Examples

Experimental program
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Embodiment

[0143] Examples and comparative examples are shown below to describe the present invention in detail, but the present invention is not limited by the following examples. In addition, Me represents a methyl group.

Synthetic example 1

[0145] 57.1 g (0.56 mol) of acetic anhydride was placed in a 300 mL flask, and the inner temperature was cooled to 5°C. 51.5 g (1.12 mol) of formic acid was added dropwise thereto. After further stirring for 30 minutes in a cooled state, the inner temperature was raised to 40° C., and after stirring for 2 hours, the mixture was cooled to room temperature to obtain a reaction liquid.

[0146] 106.0 g (0.30 mol) of 3-aminopropyltris(trimethylsiloxy)silane and 120.0 g of tetrahydrofuran were charged in a 500 mL flask, and the inner temperature was cooled to -15°C. The above-mentioned reaction solution was added dropwise thereto at such a rate that the internal temperature did not exceed -5°C. After completion of the dropping, stirring was further carried out at -15°C for 2 hours. Next, volatile matter was removed by an evaporator to obtain 118.2 g of a crude N-formylated product.

[0147] 118.2 g of the above-mentioned crude N-formylation product, 120.0 g of methylene chloride...

Synthetic example 2

[0149] 26.5 g (0.26 mol) of acetic anhydride was placed in a 300 mL flask, and the inner temperature was cooled to 5°C. 23.9 g (0.52 mol) of formic acid was added dropwise thereto. After further stirring for 30 minutes in a cooled state, the inner temperature was raised to 40° C., and after stirring for 2 hours, the mixture was cooled to room temperature to obtain a reaction liquid.

[0150] Fill in a 500mL flask n Bu(Me 2 )SiO(Me 2 SiO) 3 Si(Me 2 )CH 2 CH 2 CH 2 NH 2 65.4 g (0.14 mol) and 100.0 g of tetrahydrofuran, and the inner temperature was cooled to -15°C. The above-mentioned reaction solution was added dropwise thereto at such a rate that the internal temperature did not exceed -5°C. After completion of the dropping, stirring was further carried out at -15°C for 2 hours. Next, the volatile matter was removed by an evaporator to obtain 69.1 g of an N-formylated crude product.

[0151] 69.1 g of the aforementioned crude N-formylation product, 120.0 g of dichl...

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Abstract

Provided is an organopolysiloxane composition comprising (A) an organopolysiloxane having at least two silicon atom-bonded alkenyl groups in each molecule, (B) an organohydrogenpolysiloxane having atleast two silicon atom-bonded hydrogen atoms in each molecule, (C) a platinum catalyst and (D) a specific isocyanide compound.

Description

technical field [0001] The present invention relates to an organopolysiloxane composition, and more specifically, to an organopolysiloxane composition to which an isonitrile compound has been added. Background technique [0002] In the hydrosilylation reaction, which is an addition reaction of a compound having an unsaturated group and a compound having an Si—H bond, various silicone materials are produced industrially using a platinum catalyst. In particular, in the case of using an organopolysiloxane having an alkenyl group and an organopolysiloxane having an S i-H bond, it is known that curing is performed by crosslinking by the above-mentioned addition reaction, thereby obtaining a polysiloxane having a silicone Unique physical properties of the material. [0003] Among the above-mentioned silicone materials, there are one-component type and two-component type according to the application. Especially, when the cured product is obtained by the above-mentioned addition re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08K5/5475C08L83/05
CPCC08L83/04C08G77/388C08G77/20C08G77/12C08L83/00C08K5/5475C08K5/56C08G77/08C08L2205/025C08L2205/03
Inventor 野田大辅作田晃司
Owner SHIN ETSU CHEM CO LTD
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