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Compositions based on organosilicon compounds

A technology of organosilicon compounds and compositions, which is applied in the treatment of dyed organosilicon compounds, nanotechnology for materials and surface science, nanotechnology, etc., and can solve the problems that silicone rubber cannot be fully applied to food, etc.

Inactive Publication Date: 2012-02-01
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that the current granulated silicone rubber is not fully suitable for food and only obtains a hardness range of 60 to 80 Shore A

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0218] In a kneader operating at 150°C, in 100 parts of trimethylsiloxy End-blocked, viscosity 8×10 6 In the diorganopolysiloxane of mPa·s, firstly mix 50 parts, and the specific surface area produced in the gas phase by the pyrogenic method is 200m 2 / g of silica, then mixed with 1 part of trimethylsiloxy-terminated dimethylpolysiloxane with a viscosity of 96 mPa s, then mixed with 7 parts with one Si in each terminal unit Hydroxyl-bonded dimethylpolysiloxane with a viscosity of 40 mPa·s, and then remixed with 1 part of trimethylsiloxy-terminated dimethylpolysiloxane with a viscosity of 96 mPa·s, and mixed with 1% by weight specific surface area of ​​at least about 100m 2 / g and the average particle size of the primary particles is 13nm alumina powder (with The trade name Alu C was purchased from Degussa AG, Germany).

[0219] The mixture can now be pelletized or used as a mixture with good sheet integrity.

[0220]The mixture has good sheet integrity. It is characteri...

Embodiment 2

[0222] In a kneader operating at 150°C, in 100 parts of trimethylsiloxy End-blocked, viscosity 8×10 6 In the diorganopolysiloxane of mPa·s, firstly mix 50 parts, and the specific surface area produced in the gas phase by the pyrogenic method is 200m 2 / g of silica, then mixed with 1 part of trimethylsiloxy-terminated dimethylpolysiloxane with a viscosity of 96 mPa s, then mixed with 7 parts with one Si in each terminal unit Hydroxyl-bonded dimethylpolysiloxane with a viscosity of 40 mPa·s, and then remixed with 1 part of trimethylsiloxy-terminated dimethylpolysiloxane with a viscosity of 96 mPa·s, and mixed with 1% by weight specific surface area of ​​at least about 100m 2 / g and the average particle size of the primary particles is 13nm alumina powder (with The trade name Alu C was purchased from Degussa AG, Germany).

[0223] This mixture is now mixed with 1.5% 2,4-dichlorodibenzoyl peroxide (50% paste in silicone oil) on a roller mill. The mixture has good sheet integ...

Embodiment 3

[0225] In a kneader operating at 150°C, in 100 parts of trimethylsiloxy End-blocked, viscosity 8×10 6 In the diorganopolysiloxane of mPa·s, firstly mix 50 parts, and the specific surface area produced in the gas phase by the pyrogenic method is 200m 2 / g of silica, then mixed with 1 part of trimethylsiloxy-terminated dimethylpolysiloxane with a viscosity of 96 mPa s, then mixed with 7 parts with one Si in each terminal unit Hydroxyl-bonded dimethylpolysiloxane with a viscosity of 40 mPa·s, and then remixed with 1 part of trimethylsiloxy-terminated dimethylpolysiloxane with a viscosity of 96 mPa·s, and mixed with 1% by weight specific surface area of ​​at least about 100m 2 / g and the average particle size of the primary particles is 13nm alumina powder (with The trade name Alu C was purchased from Degussa AG, Germany).

[0226] This mixture is now mixed with 0.7% dicumyl peroxide (98% strength) on a roll crusher. For homogenization, the roll mill was cooled to 40°C.

[...

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Abstract

The invention relates to a composition comprising an organosilicon compound and an aluminum oxide powder having a specific surface area of ​​at least 50 m2 / g and an average primary particle size of 1 to 50 nm.

Description

technical field [0001] The present invention relates to a composition based on organosilicon compounds and aluminum oxide, a process for the preparation of the composition, a granule comprising or consisting of the composition and a process for the production of the granule. Background technique [0002] For automated extrusion or injection molding it is expedient to provide the silicone rubber in pellet form. The problem is that currently granulated silicone rubbers are not fully suitable for food and are only available in the Shore A hardness range of 60 to 80. [0003] EP-A 1028140 describes the preparation of granules consisting of silicone rubber with suitable additives. Contents of the invention [0004] The present invention relates to compounds comprising organosilicon compounds and having a specific surface area of ​​at least 50m 2 / g and the composition of alumina powder having an average primary particle size of 1 to 50 nm. [0005] The organosilicon compound...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K13/00
CPCC01P2006/12C08K3/22C09C1/407C01P2004/64C09C3/12B82Y30/00C08J3/24C08K5/14C08K7/14C08L83/04C08K2003/2227C08K2201/011
Inventor P·杰尔绍
Owner WACKER CHEM GMBH