Partial esterified isomerized alcohol block polyether, preparation and application in deinking of waste paper

A block polyether and isomeric alcohol technology, applied in chemical instruments and methods, pulp fat/resin/pitch/wax removal, transportation and packaging, etc., can solve the problems of poor foaming of deinking agent and achieve emulsification Strong dispersing ability, wide application range, enhanced compatibility effect

Inactive Publication Date: 2008-12-10
SHANGHAI UNIV OF ENG SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, the foaming performance of the deinking agent is poor, and it is generally not used alone for flotation. It can be compounded with an anionic surfactant with strong foaming ability to achieve the best flotation effect.

Method used

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  • Partial esterified isomerized alcohol block polyether, preparation and application in deinking of waste paper
  • Partial esterified isomerized alcohol block polyether, preparation and application in deinking of waste paper
  • Partial esterified isomerized alcohol block polyether, preparation and application in deinking of waste paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Pump 2-ethylhexanol into the polymerization reactor, add catalyst KOH according to 0.5% of the total weight of 2-ethylhexanol, then heat the material to 150°C, vacuumize and pass through nitrogen protection, and pass through 572 kg The reaction control step is controlled by the feeding speed of ethylene oxide, the temperature does not exceed 150°C, and the pressure is 0.35MPa. Complete response;

[0044] Add 754 kilograms of propylene oxide, after the propylene oxide has been added, keep warm and reduce the pressure to 0.2MPa, so that the remaining raw materials react completely;

[0045] Add 572 kg of ethylene oxide. After the ethylene oxide is added, keep warm and reduce the pressure to 0.2 MPa, so that the remaining raw materials will react completely, and the isomeric alcohol block polyether will be produced after cooling down and discharging. The general structural formula is as formula (1), wherein: n=6, m=2, x=16, y=16, z=16;

[0046] The structure of 2-ethylhe...

Embodiment 2

[0055] 2-Ethylhexanol is pumped into the polymerization reactor, and catalyst KOH is added by 0.5% of the weight of 2-Ethylhexanol, then the material is heated to 130° C., vacuumized and nitrogen protection is introduced, and 572 kg of Ethylene oxide, the reaction control step is controlled by the feeding speed of ethylene oxide, the temperature generally does not exceed 150°C, and the pressure is less than 0.35MPa. The response is complete.

[0056] Add 754 kilograms of propylene oxide, keep the temperature and reduce the pressure to 0.2MPa after the metered propylene oxide is added, so that the remaining raw materials react completely.

[0057] Add 572 kilograms of oxirane, keep the temperature and reduce the pressure to 0.2MPa after the metered oxirane is added, so that the remaining raw materials react completely.

[0058] Put the fully reacted material into a reactor with a water separator, and add the P 2 o 5 , (weight ratio), the control reaction temperature is not m...

Embodiment 3

[0069] Pump the isomeric dodecanol into the polymerization reactor, add catalyst KOH according to 0.8% of the total amount of isomeric dodecyl alcohol, then heat the material to 140°C, vacuumize and pass nitrogen protection, at the same time, open the metering pound, Feed 458 kg of ethylene oxide, the reaction control step is controlled by the feeding speed of ethylene oxide, the temperature generally does not exceed 150°C, and the pressure is less than 0.35MPa. , so that the remaining raw materials react completely.

[0070] Add 878 kilograms of propylene oxide, keep the temperature and reduce the pressure to 0.2MPa after the metered propylene oxide is added, so that the remaining raw materials react completely.

[0071] Add 512 kg of oxirane, keep the temperature and reduce the pressure to 0.2MPa after the metered oxirane is added, so that the remaining raw materials react completely.

[0072] Put the fully reacted material into a reactor with a water separator, and add POC...

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Abstract

The invention discloses partially esterified isomerous alcohol block polyether, a method for manufacturing the same, and an application of the partially esterified isomerous alcohol block polyether in deinking of waste paper. The partially esterified isomerous alcohol three-block polyether reinforces the intermiscibility of a surfactant and ink on the basis of maintaining the surface activity, and has the advantages of low dosage, strong emulsifying and dispersing capacities, superior deinking effect and wide application range. Simultaneously, the partially esterified isomerous alcohol block polyether also has the characteristic of friendly environment. The chemical structural formula is as above.

Description

technical field [0001] The invention relates to a partially esterified isomeric alcohol block polyether for waste paper deinking and a preparation method thereof. Background of the invention [0002] Waste paper recycling has become an important material source of paper and pulp in my country. Recycling waste paper as secondary fiber can effectively protect forest resources, reduce environmental pollution, reduce papermaking costs and improve the international competitiveness of the papermaking industry. According to statistics, in 2005, the total output of paper and cardboard in my country reached 52.1 million tons, and the total consumption was 54.7 million tons, an increase of 13.76% and 10.94% respectively compared with 2004, accounting for about 10% and 14% of the world's total respectively, ranking first in the world. Second, second only to the United States. And my country is a country that is extremely short of wood fiber raw materials, the forest coverage rate is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/327C08G65/06B01F17/42D21C9/02D21C9/08C09K23/42
Inventor 肖稳发杨斌李洪森饶品华徐菁利肖志发藤飞黄海芳
Owner SHANGHAI UNIV OF ENG SCI
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