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Method for packaging silicone compounds

A technology of silicone polymer and silicone composition, applied to the gap between the outer surfaces, the field of sleeve filled with silicone composition, can solve the problem that the permanent movement of the piston cannot be ensured

Active Publication Date: 2020-06-12
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, in every case, the polybutene / wax mixture did not ensure the necessary permanent mobility of the piston

Method used

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  • Method for packaging silicone compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] filling

[0055] In order to study the efficiency of this method, a commercially available from Wacker Chemie AG, Munich, Germany under the trade name 6000 of a commercially available acetate crosslinked silicone sealant was filled into commercially available empty sleeves consisting of polyethylene type E310 from Fischbach KG, Engelskirchen, Germany. The empty sleeve was filled using a commercially available filling system and sealed with a Type K02 HDPE piston from Fischbach. Immediately before this, α,ω-bis(trimethylsiloxy)polydimethylsiloxane with a viscosity of 12 500 mPas was applied to the outer circumference of the piston wall with a brush. The amount of oil applied was 0.2 g. Therefore, an application rate of about 0.01 g / cm is achieved 2 .

[0056] store

[0057] Subsequently, the 10 sleeve system samples thus obtained were stored for 8 weeks in a climate-controlled cabinet as follows: starting from 23° C. and 50% atmospheric humidity, they were first...

Embodiment 5

[0074] filling

[0075] The experiment according to Example 1 was repeated with the modification that instead of α,ω-bis(trimethylsiloxy)polydimethylsiloxane with a viscosity of 5000 mPas, α,ω-bis( trimethylsiloxy) polydimethylsiloxane.

[0076] store

[0077] Samples were stored as described in Example 1. The average values ​​of the measurements are listed in Table 1.

Embodiment 6

[0079] filling

[0080] The experiment according to Example 1 was repeated with the modification that instead of the α,ω-bis(trimethylsiloxy)polydimethylsiloxane with a viscosity of 60 000 mPas, α,ω-bis( trimethylsiloxy) polydimethylsiloxane.

[0081] store

[0082] Samples were stored as described in Example 1. The sleeves were subjected to the tests described in Example 1. The average values ​​of the measurements are listed in Table 1.

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Abstract

The invention relates to a method for packaging silicone compounds in hollow cylindrical containers, which are closed off by a piston, characterized in that in the interspace between the inner wall ofthe hollow cylindrical container and the outer surface of the piston, a silicone polymer (A) having a viscosity of 5000 mPa to 10000 mPa, measured at 25 DEG C, is introduced. The invention further relates to cartridges filled with silicone compounds, and to a method for sealing the interspace between the inner surface of the hollow cylindrical container and the outer surface of the piston.

Description

technical field [0001] The present invention relates to a method for packaging a silicone composition in a hollow cylindrical container sealed with a piston, to a cartridge filled with a silicone composition, and to a method for sealing a hollow cylindrical container The clearance method between the inner surface of the piston and the outer surface of the piston. Background technique [0002] Methods of filling RTV-1 sealants are known. They are often filled in containers for simplified applications. It is particularly common to be enclosed in a sleeve consisting of polyethylene. In this case, the prior art is a cylindrical sleeve sealed with a piston at the bottom end. These pistons must protect the RTV-1 sealant in the sleeve as effectively as possible from the penetration of atmospheric humidity. In addition, the piston, which usually also consists of polyethylene or polypropylene, has to meet further important requirements. For example, the piston should be placed i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D83/00C08L83/04
CPCC08G77/04B65D83/0005C08L83/04B65D81/3841B65D85/70
Inventor 乌韦·施姆彼得·舍尔莱
Owner WACKER CHEM GMBH