Siloxane oligomers, a process for their production and their use

a technology of siloxane oligomers and production processes, applied in the field of siloxane oligomers, can solve the problems of siloxane oligomers, release of considerable amounts of alcohol during the mixing process,
US20030018155A1Inactive Publication Date: 2003-01-23DEGUSSA AG
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
DEGUSSA AG
Publication Date
2003-01-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

Siloxane oligomers of the general formula I or II wherein at least one functionalized alkyl group is present per oligomer molecule. The siloxane oligomers are produced by oligomerization of halogenalkyltrihalogensilanes, and co-optionally co-oligomerized with (C1-C18)-alkyl-, phenyl-, aryl- or aralkyl-trihalogensilanes and / or silicon tetrachloride, in the presence of alcohol and water, following which the halogenalkyl function is optionally modified in a further step. The siloxane oligomers can be used as coupling agents in rubber mixtures or as building preservation agents.
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Description

INTRODUCTION AND BACKGROUND

[0001] The present invention relates to siloxane oligomers, a process for their production as well as their use.

[0002] It is known to employ silanes as coupling agents. Thus, aminoalkyltrialkoxysilanes, methacryloxyalkyltrialkoxysilanes, polysulfanalkyltrialkoxysilanes, as well as mercaptoalkyltrialkoxysilanes are used as coupling agents between inorganic materials (e.g. glass fibres, metals, oxidic fillers) and organic polymers (e.g. thermosetting plastics, thermoplastic materials, elastomers) and / or as crosslinking agents and surface modification agents.

[0003] These coupling or bonding agents form bonds with the filler as well as the elastomer and thereby produce a good interaction between the filler surface and the elastomer. They reduce the viscosity of the mixture and facilitate the dispersion of the filler.

[0004] Furthermore it is known that the use of commercially available silane coupling agents (DE 22 55 577) with three alkoxy substituents on the ...

Claims

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