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Vegetable oil based polyols and polyurethanes made therefrom

一种植物油基、多元醇的技术，应用在植物油基多元醇以及由它制造的聚氨酯领域，能够解决没有完全固化、限制使用等问题

Inactive Publication Date: 2008-12-03
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it has been described that the presence of secondary hydroxyl groups can lead to moisture, where the product appears wet and not fully cured, thus limiting the use of low-cost renewable initiators such as glycerol

Method used

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  • Vegetable oil based polyols and polyurethanes made therefrom
  • Vegetable oil based polyols and polyurethanes made therefrom
  • Vegetable oil based polyols and polyurethanes made therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-27

[0094] Embodiment 1-27 is produced the method for polyol by vegetable oil-based fatty acid methyl ester

[0095] Hydroxylated fatty acid methyl esters of soybean oil and 9 , (10)-Hydroxymethylstearate (from methyl oleate).

[0096] Glycerol was obtained from Sigma-Aldrich Chemical Company (CAS# [56-81-5]) and vacuum distilled at 20mm / 183°C. The distilled glycerol was then stored under nitrogen until use.

[0097] CEI-625 is an EO polyol initiated by glycerol with a number average molecular weight of 625. It is produced by Dow Chemical Company.

[0098] Trimethylolpropane [77-99-6] was obtained from Sigma-Aldrich Chemical Co.

[0099] 1,6-Hexanediol [629-11-8] was obtained from Sigma-Aldrich Chemical Co.

[0100] CEI-1200 is a glycerin initiated EO polyol with a number average molecular weight of 1200. It is produced by Dow Chemical Company.

[0101] PE-270 is a pentaerythritol based polyol ethoxylated with ethylene oxide to a number average molecular weight of 270. PE...

Embodiment 1-17

[0124] Examples 1-17 General Polymerization Process for Seed Oil Polyols Produced from Fatty Acid Methyl Esters

[0125] The methylolated fatty acid methyl ester monomer is transferred to a three-necked reaction flask of 500 ml to 5000 ml capacity, the choice of which capacity is generally known to those skilled in the art and depends on the amount of raw material used. The reactor was equipped with a mechanical stirrer, sealed condenser, nitrogen purge, heating mantle with heat gauge and thermometer. Install a vacuum line equipped with a dry ice trap and a vacuum regulator. The initiator and the monomer are added, and the mixture in the reactor is stirred and degassed under the condition of 20 torr vacuum degree and 50 degree. Once the temperature stabilized, the catalyst was added and the temperature raised to the final specified reaction temperature. Initially set the vacuum degree at 100 Torr, and then slowly reduce the pressure to 5-20 Torr. Heating is continued at t...

Embodiment 1-10

[0127] Example 1-10 Polyols produced by 9(10)-hydroxymethyl stearate

[0128] Polyols were produced from 9,(10)-hydroxymethylstearate using the methods described above with the indicated initiators and catalysts and are detailed in Table I below.

[0129]

[0130] Examples 11-18 Polyols produced by hydroxymethylated fatty acid methyl esters of vegetable oils

[0131] The vegetable oil-based polyols were produced from hydroxymethylated fatty acid methyl esters of soybean oil using the general method described above and are shown in Table II below.

[0132]

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Abstract

The invention discloses polyhydric alcohol which is used to prepare polyurethane. Polyhydric alcohol is obtained through reacting vegetable oil radical (containing methylol) monomer, polyhydric alcohol, polyamine or amino alcohol under vacuum.

Description

technical field [0001] The present invention relates to an improved process for the preparation of plant-based polyols for use in the manufacture of, for example, polyurethane foam. Background technique [0002] Polyurethanes are prepared by reacting polyisocyanates and polyols. The first large-scale commercial production of polyurethanes using polyester polyols arose from the ester condensation of diols or polyols with dicarboxylic acids to make flexible foams. Polyether polyols are used instead of the polyester polyols because of their low cost and the ability to prepare a wide variety of polyols. Polyethers are prepared by polymerizing epoxides (ethylene oxide) derived from petroleum feedstocks with active hydrogen feedstock compounds (polyols and polyamines). [0003] Rigid polyurethane foams have been made with castor oil or castor oil by-products. Castor oil is used for rigid foams because of its low molecular weight (short chain length) and high functionality (trih...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/36C08G18/42C08G18/48C08G18/40
CPCC08G18/4841C08G2101/0008C08G18/6696C08G2101/0025C08G2101/005C08G18/4288C08G18/4891C08G18/4018C08G2101/0083C08G18/36C08G18/4072C08G18/4804C08G2110/0083C08G2110/005C08G2110/0008C08G2110/0025C08G18/32C08G18/16
Inventor Z·李森科A·K·施罗克D·A·巴布A·桑德斯J·察瓦拉斯R·朱厄特L·钱伯斯C·谢勒J·H·吉尔克里斯特
Owner DOW GLOBAL TECH LLC
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