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Process of forming a polyol

A polyol, form technology, applied in chemical instruments and methods, sugar derivatives, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as use

Inactive Publication Date: 2009-03-18
BASF SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these cases, the alkaline earth metal hydroxides and amines are not used to catalyze the alkoxylation of the initiator composition to form polyols and therefore do not play the same role when used in foam formation and / or surfactants. effect

Method used

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  • Process of forming a polyol
  • Process of forming a polyol
  • Process of forming a polyol

Examples

Experimental program
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Embodiment

[0030] Polyol 1 is formed according to the process of the invention in the presence of an alkaline earth metal hydroxide and a first amine. Two comparative polyols, Comparative Polyol 1 and 2, were not formed by the process of the present invention. Comparative Polyol 1 was formed by reacting an initiator composition and an alkylene oxide in the presence of a second amine without an alkaline earth metal hydroxide. Comparative Polyol 2 was formed by reacting an initiator composition and an alkylene oxide in the presence of an alkaline earth metal hydroxide without the first or second amine. Specific amounts of the initiator composition, alkylene oxide, alkaline earth metal hydroxide, first amine, and second amine are listed in Table 1 below. The reaction times, formulated hydroxyl values ​​and experimental hydroxyl values ​​for Polyol 1 and Comparative Polyols 1 and 2 are also listed in Table 1. Unless otherwise stated, all components of Polyol 1 and Comparative Polyol 1 are ...

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Abstract

A process of forming a polyol includes the steps of providing an alkylene oxide, providing an initiator composition having an average functionality of at least four, and providing an alkaline earth metal hydroxide and an amine. The process also includes the step of reacting the initiator composition and the alkylene oxide in the presence of the alkaline earth metal hydroxide and the amine to form the polyol. This allows the polyol to have consistent chain length and be formed with increased speed and in high yield, while reducing costs and maximizing efficiency. The polyol is reacted with an isocyanate and used to form a polyurethane article.

Description

technical field [0001] The present invention relates generally to a method of forming polyols and polyurethane articles made from the polyols. More specifically, the present invention relates to a method of forming polyols in the presence of alkaline earth metal hydroxides and amines. Background technique [0002] Many methods of forming polyols are known in the art. One method involves reacting sucrose and glycerol having a combined average functionality of less than 7 with an alkylene oxide. Sucrose, glycerol, and alkylene oxide react to form polyols, typically in the presence of catalytic amounts of potassium hydroxide and / or amines. The reaction is an alkoxylation reaction, forming a chain of alkylene oxide units on the hydroxyl groups of sucrose and / or glycerol. [0003] The alkoxylation reaction is carried out in the presence of potassium hydroxide alone or together with the amine. However, the alkoxylation reaction adds a further disproportionate amount of alkylen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48B01J23/02C07C41/03C07H15/08C08G65/26
CPCC08G65/269C07C41/03C08G18/4883C08G18/4829C08G2101/00C07C43/11C08G18/48C08G18/16C07H15/08B01J23/02
Inventor E·M·德克斯哈姆尔M-Y·黄T·普莱格
Owner BASF SE
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