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Preparation method of atactic polyether

A random polyether, selected technology, applied in the field of preparation of random polyether, to achieve the effect of high catalyst activity, shortened reaction time and good technical effect

Active Publication Date: 2009-12-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some difficulties in making the distribution uniformity of EPO segments ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A, preparation of double metal cyanide complex catalyst

[0027] 8 g of potassium hexacyanocobaltate was dissolved in 140 ml of distilled water. Slowly add 38.5% (weight) of ZnCl at 8000 rpm2 65 grams of aqueous solution, then add a mixture of 100 milliliters of tert-butanol and 100 milliliters of distilled water, stir for 20 minutes, add 14.7 grams of dimethyl phthalate and 200 milliliters of distilled water, stir for 10 minutes, then vacuum filter with a sand core funnel . Add 150 milliliters of tert-butanol and 60 milliliters of distilled water to the obtained solid, stir at a speed of 8000 rpm for 10 minutes, then add 10.6 grams of dimethyl phthalate, stir for 10 minutes, and centrifuge. Add 200 ml of tert-butanol to the obtained solid, stir at 8000 rpm for 10 minutes, then add 6.7 g of dimethyl phthalate, stir for 10 minutes, and centrifuge. The solid was vacuum-dried at 60° C. to a constant weight to obtain 12.9 g of solid powder Catalyst I.

[0028] After anal...

Embodiment 2

[0037] A. Add 50ml of n-heptane and 0.0416g of catalyst I into a 2L reactor, vacuumize and heat up to 105°C, then continuously add 400g of propylene oxide (PO) and ethylene oxide (EO) with a molar ratio of 1:1 ) mixture, vacuumize for 30 minutes after the pressure in the reactor no longer changes, add 393g of propylene oxide (PO) and ethylene oxide (EO) continuously in a molar ratio of 1:1 after adding 40g n-butanol Mixture, the pressure of the reactor is controlled at about 0.2MPa, and the reaction temperature is 130-135°C. After the addition of the monomers, the pressure in the reactor does not change any more. After 30 minutes of aging, vacuumize for 30 minutes to obtain 780g of random Polyether. After analysis, the hydroxyl value was 36.0 mgKOH / g, and the cloud point was 47.3°C.

[0038] B. Add 50ml of n-heptane and 0.050g of catalyst I into a 2L reactor, vacuumize and heat up to 105°C, then continuously add 400g of propylene oxide (PO) and ethylene oxide (EO) with a mola...

Embodiment 3

[0041] A, preparation of double metal cyanide complex catalyst

[0042] 8 g of potassium hexacyanocobaltate was dissolved in 140 ml of distilled water. Slowly add 38.5% (weight) of ZnCl at 8000 rpm 2 65 grams of aqueous solution, then add a mixture of 100 milliliters of tert-butanol and 100 milliliters of distilled water, stir for 30 minutes, and vacuum filter with a sand core funnel. Add 150 ml of tert-butanol and 60 ml of distilled water to the obtained solid, stir at 8000 rpm for 20 minutes, and centrifuge. Add 200 ml of tert-butanol to the obtained solid, stir at 8000 rpm for 20 minutes, and centrifuge. The solid was vacuum-dried at 60° C. to a constant weight to obtain 10.2 g of solid powder Catalyst II.

[0043] After analysis: Co 10.9% (weight) Zn 29.2% (weight)

[0044] tert-butanol 10.9% (weight)

[0045] 8 g of potassium hexacyanocobaltate was dissolved in 140 ml of distilled water. Slowly add 38.5% (weight) of ZnCl at 8000 rpm 2 65 grams of aqueous so...

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Abstract

This invention relates to preparation method of random polyether, primary solve problem of long polymerization time and large catalyzer dosage that exist in ancient technology which takes fatty alcohol or fatty acid as initiator, alkali as catalyzer to prepare random polyether. This invention takes fatty alcohol or fatty acid as initiator, bimetal prussiate as catalyzer to catalyze mixture of oxirane and propylene oxide to gain random polyether, better solve above problem, can be used in industrial production of random polyether.

Description

technical field [0001] The present invention relates to a kind of preparation method of atactic polyether, especially about a kind of adopting double metal cyanide catalyst, with fatty alcohol or fatty acid containing active hydrogen atom as starting agent to carry out ethylene oxide (EO) and epoxy Process for preparing random polyether (EPO) from a mixture of propane (PO). Background technique [0002] Atactic polyether (EPO) is an important non-ionic surfactant and one of the important raw materials for chemical fiber oils. It has good smoothness, good clustering properties, good viscosity-temperature characteristics, and high temperature resistance. , not easy to coke. Atactic polyether (EPO) is different from the commonly used aliphatic ester lubricants. After the oil is heated on the surface of the fiber, the water evaporates, but the concentration of the oil gradually increases, and there is no conversion from oil-in-water (O / W) to oil. The phenomenon of wrapping wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/04
Inventor 涂建军金晖张志华蔡丽萍
Owner CHINA PETROLEUM & CHEM CORP
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