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New polyether alcohols containing alkoxysilyl groups and method for production

一种烷氧基甲硅烷基、化烷氧基硅烷的技术，应用在化学仪器和方法、有机化学、周期表第4/14族元素的化合物等方向，能够解决不能适用单-和/或多重改性等问题

Active Publication Date: 2009-08-26
EVONIK OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Therefore, all the methods described in the prior art are only suitable for the preparation of polyoxyalkylene compounds only end-modified with trialkoxysilyl groups, but not for mono- and polyether chains with trialkoxy functional groups. / or multiple modifications, even within the sequence of oxyalkylene units

Method used

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  • New polyether alcohols containing alkoxysilyl groups and method for production
  • New polyether alcohols containing alkoxysilyl groups and method for production
  • New polyether alcohols containing alkoxysilyl groups and method for production

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Experimental program
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Effect test

Embodiment 1

[0138] First, under nitrogen, put 130.2g of polypropylene glycol monobutyl ether (average molar mass of 520g / mol) and 0.10g of zinc hexacyanocobaltate DMC catalyst into a 3-liter autoclave, and stir and heat to 130°C . The reactor was evacuated to an internal pressure of 30 mbar in order to remove by distillation any volatile components present. To activate the DMC catalyst, a 58.0 g portion of propylene oxide was added. After 15 minutes the reaction started (reduced internal pressure in the reactor), under the condition of cooling to 130°C and the maximum internal pressure of the reactor was 0.9 bar absolute pressure, 556.0 g 3-glycidyloxypropyltriethoxysilane ( GLYEO) and 1363.0 g propylene oxide. After post-reaction at 130-150° C. for 90 minutes, a degassing step was performed. In this step, volatile fractions such as residual propylene oxide are distilled off under reduced pressure. The final low viscosity and colorless polyether is cooled to below 80°C and discharge...

Embodiment 2

[0141] First, under nitrogen, 200.0 g of polypropylene glycol monobutyl ether (average molar mass: 750 g / mol) and 0.015 g of zinc hexacyanocobaltate DMC catalyst were charged into a 3-liter autoclave. The mixture was heated to 130° C. and then any volatile components were removed at 30 mbar. To activate the DMC catalyst, a portion of 225.0 g of 3-glycidyloxypropyltriethoxysilane ( GLYEO). At the beginning of the reaction (slightly exothermic) and After GLYEO has been consumed, first 59.1 g of ethylene oxide are metered in within 10 minutes and then 225.0 g of 3-shrinkle are metered in within 20 minutes with cooling to 130° C. and a maximum pressure inside the reactor of 0.8 bar absolute. Glyceryloxypropyltriethoxysilane ( GLYEO). After post-reaction at 130-150°C for 90 minutes, a degassing step was performed to remove volatile fractions.

[0142] Depend on The final polyether alcohol formed by GLYEO and ethylene oxide blocks has low viscosity, contains an average of ...

Embodiment 3

[0144] First, under nitrogen, 65.1 g of 1-octanol and 0.065 g of zinc hexacyanocobaltate DMC catalyst were charged into a 3-liter autoclave. The mixture was heated to 130° C. and then any volatile components were removed at 400 mbar. To activate the DMC catalyst, a 58.0 g portion of propylene oxide was added. After the start of the reaction (decrease in internal pressure), 236.0 g of 3-glycidyloxypropane were metered in successively at 130° C. within 35 minutes under the condition that the maximum pressure inside the reactor was 1.5 bar absolute pressure and cooled. Trimethoxysilane ( GLYMO) and then, after 30 minutes of afterreaction, 220.0 g of ethylene oxide were metered in within 10 minutes. After post-reaction at 150°C for 90 minutes, a degassing step was performed to remove volatile fractions.

[0145] Depend on The final polyether alcohol formed by GLYMO and ethylene oxide blocks contains an average of 2 trialkoxysilyl units per molecule, an OH number of 49.4 mg K...

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Abstract

Polyether alcohols having alkoxysilyl groups, the use thereof and a process for their preparation by means of DMC catalysis, characterized in that one or more epoxy--functional alkoxysilanes are added individually or in a mixture with further epoxide compounds and optionally further comonomers, either in block form or in random distribution, onto a chain starter of the formula (VII) R1-H (VII) having at least one reactive hydroxyl group, where R1 is a saturated or unsaturated, optionally branched radical, or a polyether radical of the alkoxy-, arylalkoxy or alkylarylalkoxy group type, in which the carbon chain may be interrupted by oxygen atoms or corresponds to a polyetheralkoxy radical or to a singularly or multiply fused phenolic group.

Description

technical field [0001] The present invention relates to novel alkoxysilyl-bearing polyether alcohols obtained by alkoxylation of epoxy-functionalized alkoxysilanes using double metal cyanide (DMC) catalysts, and a process for their preparation. Background technique [0002] Common polyether alcohols (often also referred to simply as polyethers, mainly formed from propylene oxide and ethylene oxide) are already known and can be produced industrially on a large scale. In particular, they can be used as starting compounds for the preparation of polyurethanes or surfactants by polyisocyanate reactions. [0003] Most processes for the preparation of alkoxylated products (polyethers) use basic catalysts such as alkali metal hydroxides and alkali metal methoxides. [0004] Most processes for the preparation of alkoxylation products (polyethers) use basic catalysts such as alkali metal hydroxides and alkali metal methoxides. [0005] The use of KOH is particularly common and has b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/22
CPCC08G65/2663C08G65/2606C07F7/1836C08G18/5096C07F7/1804C08G63/66C08G63/664C08G63/695C08G63/6952C08G64/0266C08G64/34C08G65/22
Inventor F·舒伯特W·克诺特
Owner EVONIK OPERATIONS GMBH
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