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New types of compatibilising agents for improving the storage stability of polyol mixtures

A technology of polyol composition and compatibilizer, applied in the field of preparing foam and homogeneous polyol mixture, can solve problems such as loss of homogeneity, incompatibility, and inability to use the same

Inactive Publication Date: 2009-08-12
EVONIK OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in Example 1, in the case of a polyether polyol based mixture, it should also be noted that after the addition of relatively high fractions of castor oil, the mixture separates again and thus again loses its homogeneity
[0034] The emulsifiers listed in the prior art can only be prepared by complex multi-step syntheses and, moreover, the mixtures contain components which cannot be used identically or are even incompatible in all technical fields of application of polyurethane foams

Method used

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  • New types of compatibilising agents for improving the storage stability of polyol mixtures
  • New types of compatibilising agents for improving the storage stability of polyol mixtures
  • New types of compatibilising agents for improving the storage stability of polyol mixtures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0140] 28 g of hydrophobic polyether monohydric alcohol (butanol starting, M = about 1800 g / mol, w (EO) = 0%) and 36 g of hydrophobic polyether diol (M = about %) and 24 g of hydrophilic polyether monoalcohol (starting from methanol, M=ca. ). Then 100 g of propylene carbonate were added. The mixture was heated to 100°C and then mixed with 0.1 g Tegokat 722 (dicaprylate) (available from TIB Mannheim). The mixture was stirred for a further 4 hours at this temperature.

Embodiment 2

[0142] 26 g of hydrophobic polyether monohydric alcohol (butanol starting, M = about 1800 g / mol, w (EO) = 0%) and 34 g of hydrophobic polyether diol (M = about 2200 g / mol, w (EO) = 10 %), 15 g of hydrophilic polyether monool (starting from methanol, M=about 1100 g / mol, w(EO)=100%) and 14 g of hydrophilic polyether monool (M=2000 g / mol, w(EO) = 100%) were mixed and 12 g of Desmodur N3200 (technical grade trifunctional isocyanate from Bayer AG) were added. Then 100 g of propylene carbonate were added. The mixture was heated to 100°C and then mixed with 0.1 g Tegokat 722 (dioctanoate) (available from TIB Mannheim). The mixture was stirred for a further 4 hours at this temperature.

Embodiment 3

[0144] 34 g of hydrophobic polyether monohydric alcohol (butanol starting, M = about 1800 g / mol, w (EO) = 0%) and 30 g of hydrophobic polyether diol (M = about %) and 25 g of hydrophilic polyether monool (methanol starting, M=2000 g / mol, w(EO)=100%) were mixed and 11 g of Desmodur N3200 (technical grade trifunctional isocyanate from Bayer AG) were added. Then 100 g of propylene carbonate were added. The mixture was heated to 100° C. and finally mixed with 0.1 g Tegokat 722 (dioctanoate) (available from TIB Mannheim). The mixture was stirred for a further 4 hours at this temperature.

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Abstract

The invention relates to polyethers containing urethane or urea groups as compatibilising agents, their preparation and use, obtained by the reaction of A. at least one di- and / or polyisocyanate with B. (a) at least one hydrophilic polyether which randomly carries at least one OH and / or NH2 and / or NH function and (b) at least one hydrophobic polyether which randomly comprises at least one OH and / or NH2 and / or NH function and (c) optionally further compounds which carry at least one OH and / or NH2 and / or NH function and / or other isocyanate-reactive groups such as carboxylic acid or epoxide functions, and with the proviso that at least one isocyanate A is difunctional or multifunctional.

Description

technical field [0001] The present invention relates to compatibilizers for improving the storage stability of polyol compositions of immiscible polyols, homogeneous polyol mixtures comprising these compatibilizers, and their use for the preparation of foams which are Prepared by reacting polyol mixtures with polyisocyanates, in which polyurethane and / or polyisocyanurate and / or polyurea foams are formed. Background technique [0002] A homogeneous mixture is here to be understood as a mixture of two or more components, here a polyol composition, without significant phase separation. Homogeneous mixtures of this type can occur in various forms, for example, as (true) solutions, emulsions, microemulsions, and the like. Substances which facilitate the formation of such a homogeneous mixture, whether in an aqueous or non-aqueous medium or with solids, are referred to in this application as compatibilizers. [0003] Polyurethane foams can be used in a variety of applications, f...

Claims

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Application Information

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IPC IPC(8): C08L71/00C08L75/00C08G18/48C08G18/72C08J9/00C09D175/00D01F6/70D01F6/72
CPCC08G18/6662C08G65/33351C08G18/485C08L71/02C08J9/0061C08G18/283C08G18/6696C08G2101/0008C08G18/7664C08J2375/04C08J2471/00C08G18/7621C08G2650/58C08G18/4816C08G2101/00C08G2110/0008A47F5/112A47F5/08
Inventor B-J·D·甘斯M·格洛斯M·费伦茨
Owner EVONIK OPERATIONS GMBH
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