Check patentability & draft patents in minutes with Patsnap Eureka AI!

Process for preparing alkoxylated alcohol

A technology for alkoxylating alcohols and alkylene oxides, which is used in the preparation of ethers, the preparation of ethers from alkylene oxides, organic chemistry, etc., and can solve the problems of no alkoxylated secondary or tertiary alcohols.

Inactive Publication Date: 2010-01-13
SHELL INT RES MAATSCHAPPIJ BV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no examples of alkoxylated secondary or tertiary alcohols in this application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for preparing alkoxylated alcohol
  • Process for preparing alkoxylated alcohol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1 - Ethoxylated Secondary Alcohol 2-Undecanol

[0055] To a "Teflon" bottle equipped with a magnetic stir bar and immersed in a (water) cooling bath was added 2-undecanol (58 mmol, 10 g), boric acid (50 mg) and hydrogen fluoride (50 mg). Ethylene oxide was added in the gas phase at atmospheric pressure in such a flow that the temperature did not exceed 50°C. After about 3 hours, 15.8 g of ethylene oxide (358 mmol) were consumed, which corresponds to a degree of ethoxylation of 6.2 based on the amount introduced, and the product was then treated with about 50 mg of diethanolamine. The yield of ethoxylated 2-undecanol was 0.316 kg EO / g HF.

[0056] Measurements of average moles of ethylene oxide per mole of 2-undecanol, ethoxylate distribution and residual free alcohol were performed using high performance liquid chromatography (HPLC). The technique for these measurements involves the use of 4-nitrobenzoyl chloride to derivatize ethoxylated alcohols. The produc...

Embodiment 2

[0058] Ethoxylated secondary alcohol 2-undecanol

[0059] The ethoxylation of 2-undecanol was carried out using the method of Example 1 except that the reaction temperature was maintained at 70°C. Measurements of average moles of ethylene oxide per mole of 2-undecanol, ethoxylate distribution and residual free alcohol were performed using the same techniques as used in Example 1. The results are shown in Table 1 below.

Embodiment 3

[0061] Ethoxylated secondary alcohol 2-undecanol

[0062] The ethoxylation of 2-undecanol was carried out using the method of Example 1 except that the reaction temperature was maintained at 130°C. Measurements of average moles of ethylene oxide per mole of 2-undecanol, ethoxylate distribution and residual free alcohol were performed using the same techniques as used in Example 1. The results are shown in Table 1 below.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
boiling pointaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

Process for preparing an alkoxylated alcohol comprising reacting a starting monohydroxy alcohol selected from secondary alcohols, tertiary alcohols and mixtures thereof with an alkylene oxide in the presence of hydrogen fluoride and a boron-containing compound comprising at least one B-O bond. The alcohol may also be a primary monohydroxy alcohol when the boron containing compound is boric acid or boric acid anhydride or a mixture thereof, or may be a primary mono hydroxy alcohol, except a C14 / C15 alcohol when reacted with ethylene oxide in the presence of HF and trimethyl borate. A phenol may be alkoxylated in the same way instead of the mono-hydroxyalcohol.

Description

technical field [0001] The present invention relates to a process for the preparation of alkoxylated alcohols. Background technique [0002] Preparation by addition reaction (alkoxylation) between alkylene oxides (epoxides) and organic compounds having one or more active hydrogen atoms, which can be used, for example, as nonionic surfactants, wetting and emulsifying agents , solvents and various products of chemical intermediates. Mention may be made, for example, in particular of alkanol ethoxylates and alkyl-substituted phenol ethoxylates prepared by reacting ethylene oxide with aliphatic alcohols having 6 to 30 carbon atoms or substituted phenols. Such ethoxylates and small amounts of the corresponding propoxylates and compounds containing mixed oxyethylene and oxypropylene are widely used as nonionic detergent components in industrial cleaning formulations for industrial and domestic use. [0003] The following formula sets forth a schematic for the preparation of alka...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07C41/03C07C43/11C08G65/28
CPCC08G65/269C07C41/03C08G65/2654C08G65/2684C07C43/11C07C43/13C08G65/26
Inventor J·H·H·缪尔斯W·C·沃赫夫-范维耶克A·范佐恩
Owner SHELL INT RES MAATSCHAPPIJ BV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com