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Process for the preparation of tris[3-(alkoxysilyl)propyl]isocyanurate

A technology of trialkoxysilyl and alkoxysilyl, applied in the field of preparing tris[3-(alkoxysilyl)propyl]isocyanurate, capable of solving impurities or by-products etc.

Active Publication Date: 2022-07-05
EVONIK OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is possible to achieve about 80% conversion in hydrosilylation by using platinum catalysts with carboxylic acids, the crude product thus obtained also has a significant amount of impurities or by-products

Method used

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  • Process for the preparation of tris[3-(alkoxysilyl)propyl]isocyanurate
  • Process for the preparation of tris[3-(alkoxysilyl)propyl]isocyanurate
  • Process for the preparation of tris[3-(alkoxysilyl)propyl]isocyanurate

Examples

Experimental program
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Effect test

Embodiment 1

[0147] Add 0.33 mol of TAICROS ® , 0.2 g of catalyst number 1 (equivalent to 0.0205 mmol of Pt) and 6.79 mmol of 3,5-di-tert-butyl-4-hydroxybenzoic acid were preliminarily charged into a 0.5 l-stirring device with reflux cooler and metering device middle. 0.82 mol of Dynasylan® TMOS were metered in within 45 minutes at a temperature of 91-111°C. Afterwards, 33.7 mmol of tert-butanol were added and 0.38 mol of Dynasylan® TMOS was metered in at a temperature of 96-111° C. within 20 minutes. Subsequently, the mixture was allowed to continue to react at about 109-120°C for about another hour. Afterwards, 24.3 g of low boilers were removed at about 104-120° C. and a pressure of 1 H-NMR spectrum can analyze the following trace impurities:

[0148] 1 Analysis of H-NMR spectrum:

[0149] Solvent: CDCl 3 + 0.5% TMS

[0150] Result: 97.3% of allyl groups were converted to trimethoxysilyl groups by hydrosilation with TMOS. Very small amounts of allyl groups (A1) can al...

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Abstract

The present invention relates to a process for the preparation of tris[3-(alkoxysilyl)propyl]isocyanurate. In particular, the present invention relates to the preparation of tris[3-(trialkoxysilyl)propyl]isocyanurate, tris[3-(alkyldialkoxysilyl)propyl]isocyanurate by hydrosilylation Tris[3-(alkoxysilyl)propyl]isocyanurate method of acid esters.

Description

technical field [0001] The present invention relates to the preparation of tris[3-(trialkoxysilyl)propyl]isocyanurate, tris[3-(alkyldialkoxysilyl)propyl]isocyanuric acid Esters and tris[3-(dialkylalkoxysilyl)propyl]isocyanurate (hereinafter also referred to generally as tris[3-(alkoxysilyl)propyl]isocyanurate A particularly economical process for the Hydrosilylieren with hydrotrialkoxysilane, hydroalkyldialkoxysilane and / or hydrodialkylalkoxysilane in the presence of , carboxylic acid and further cocatalysts. Background technique [0002] Tris[3-(alkoxysilyl)propyl]isocyanurate is a silane that can be used as a crosslinking agent. Each alkoxysilyl group can form one, two or three chemical bonds upon hydrolysis; three up to nine chemical bonds can theoretically be formed by three such alkoxysilyl groups. Through this strong crosslinking possibility, tris[3-(alkoxysilyl)propyl]isocyanurate has the potential to realize various applications. Another advantage of tris[3-(alko...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/18
CPCC07F7/1876C07F7/1804C07D251/32B01J31/1608B01J27/13B01J21/18B01J2531/828C07F7/18Y02P20/50
Inventor P.阿尔伯特E.于斯特
Owner EVONIK OPERATIONS GMBH