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Double-liquid mixing type organopolysiloxane composition

A technology of polysiloxane and silane compounds, which is applied in the direction of adhesive additives, non-polymer adhesive additives, and other chemical processes, and can solve problems such as the position of the pasting substrate cannot be adjusted finely, and the bonding time is short. , to achieve the effect of good deep curing and long bonding time

Active Publication Date: 2013-10-23
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the rapid curing property of this composition is indeed greatly improved, but because the curing after mixing is too fast, there are disadvantages such as a short potable time for bonding, and the position cannot be finely adjusted after the substrate is pasted.

Method used

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  • Double-liquid mixing type organopolysiloxane composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] A reaction product of 2-ethylhexyl acrylate and dimethoxymethylsilane was added to 100 parts by mass of polydimethylsiloxane with a viscosity of 20,000 mPa·s at the end end-blocked with silanol groups ( Product name: OCMS-2, manufactured by Shin-Etsu Chemical Co., Ltd.) 3 parts by mass, 1,1,3,3-tetramethyl-2-[3-(trimethoxysilyl)propyl]guanidine 0.6 mass After the reaction, add 1 part by mass of methyltrimethoxysilane partial hydrolysis condensate (trade name: KC-89E, manufactured by Shin-Etsu Chemical Co., Ltd.), 1 part by mass of vinyltrimethoxysilane Parts were mixed completely under reduced pressure to obtain the first composition.

[0101] In addition, 2 parts by mass of ethyl acetoacetate and 0.2 parts by mass of dioctyltin ditertiary carboxylate were added to 100 parts by mass of polydimethylsiloxane terminated with silanol groups at the end with a viscosity of 20,000 mPa·s at 25°C. , mixed with a mixer to obtain the second composition.

[0102] Sample 1 was obt...

Embodiment 2

[0104] A reaction product of 2-ethylhexyl acrylate and dimethoxymethylsilane was added to 100 parts by mass of polydimethylsiloxane with a viscosity of 20,000 mPa·s at the end end-blocked with silanol groups ( Product name: OCMS-2, manufactured by Shin-Etsu Chemical Co., Ltd.) 3 parts by mass, 1,1,3,3-tetramethyl-2-[3-(trimethoxysilyl)propyl]guanidine 0.6 mass After the reaction, add 1 part by mass of methyltrimethoxysilane partial hydrolysis condensate (trade name: KC-89E, manufactured by Shin-Etsu Chemical Co., Ltd.), 1 part by mass of vinyltrimethoxysilane parts and 5 parts by mass of 3-aminopropyltriethoxysilane were completely mixed under reduced pressure to obtain the first composition.

[0105] In addition, 1 part by mass of ethyl acetoacetate and 0.2 part by mass of dioctyltin ditertiary carboxylate were added to 100 parts by mass of polydimethylsiloxane terminated with silanol groups at the end with a viscosity of 20,000 mPa·s at 25°C. , mixed with a mixer to obtain ...

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Abstract

The invention provides a dealcoholized double-liquid mixing type organopolysiloxane composition having moderate usable time and excellent curing properties in deep portions after mixing. The double-liquid mixing type organopolysiloxane composition contains a first composition and a second composition and is solidified by mixing the first and the second compositions. The first composition is a composition that contains the following components: (A) organopolysiloxane, (B) a compound selected from a ketene silyl acetal type compound, a 2-methyl dialkoxy silyl propionate and a partial hydrolysate of the ketene silyl acetal type compound and the 2-methyl dialkoxy silyl propionate, (C) an organic compound and / or a silane compound having more than one nitrogen atom in a molecule, and (D) a silane compound having more than two alkoxies in a molecule and / or partial hydrolytic condensation compound thereof. The second composition is a composition that contains the following components: (E) organopolysiloxane, (F) an organic tin catalyst, and (G) an ester compound.

Description

technical field [0001] The present invention relates to a dealcoholized two-liquid mixing type organopolysiloxane composition having a moderate pot life after mixing and excellent deep curability. Background technique [0002] As for the condensation-curable room-temperature rapid-curing organopolysiloxane composition, it is known that the cross-linking agent generated by hydrolysis is reduced to the limit with respect to the two-terminal hydroxyl organopolysiloxane as the base polymer. A one-component type composition with improved coupling speed and a two-component type composition in which both terminal hydroxyorganopolysiloxane as a base polymer and a crosslinking agent are packaged separately and mixed at the time of use. [0003] The one-component type of the above-mentioned composition only has a fast curing speed from the surface, and since it takes a certain time for deep curing, it is difficult to call it fast curing. Therefore, when rapid curing is required, a tw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08K5/101C09K3/10C09J183/06C09J11/06
Inventor 荒木正佐藤德夫
Owner SHIN ETSU CHEM IND CO LTD