Defoaming agent for linerboard paper making

A technology of container board and defoamer, applied in the direction of defoamer, etc., can solve problems such as container board foam

Inactive Publication Date: 2008-04-09
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of this invention is to provide a kind of defoamer for boxbo

Method used

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  • Defoaming agent for linerboard paper making
  • Defoaming agent for linerboard paper making
  • Defoaming agent for linerboard paper making

Examples

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Effect test

example 1

[0065] Example 1: Preparation of organic hydrocarbon defoaming mixture O1:

[0066] Add 90 parts of liquid wax with a viscosity of 40 mPa·s and 4 parts of aluminum stearate into the reaction bottle, start stirring, and slowly raise the temperature. After the temperature rises to 135-140°C, keep it warm for 2 hours. Then add 6 parts of hydrophobic silica particles and mix evenly.

example 2

[0067] Example 2: Preparation of organic hydrocarbon defoaming mixture O2:

[0068] Add 93 parts of white oil with a viscosity of 5 mPa·s and 4 parts of EBS into the reaction flask, start stirring, and slowly raise the temperature. After the temperature rises to 135-140°C, keep it warm for 1 hour. Then add 3 parts of MQ resin (molar ratio M / Q=0.7:1) and mix evenly.

example 3

[0069] Example 3: Preparation of fatty alcohol polyether A1:

[0070] Add 130g of n-octanol and 100ppm of bimetallic catalyst to the polyether reactor, then vacuumize at 100°C to remove low molecular weight substances and trace moisture in the raw materials, and maintain it at a vacuum degree of -0.09~-0.1MPa 30min. Then continue to heat up to around 150° C., and add a mixture of ethylene oxide (EO) and propylene oxide (PO) to a total of 1000 g, wherein the mass of EO is 400 g, and the mass of PO is 600 g. After adding the mixed alkanes, keep it at the reaction temperature for 60 minutes, and finally cool down and discharge the material to obtain a colorless transparent viscous liquid, which is octanol polyether A1, and its average molecular weight is 1070.

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Abstract

The invention provides a defoaming agent for a boxboard paper making, which belongs to the field of chemical preparation special for papermaking, and is characterized in that the invention consists of the following components. (1) 5 to 40 percent organic hydrocarbon defoaming mixture consists of organic hydrocarbon and superfine particles consisting of hydrophobic inorganic particles, a surface area of which is bigger than 50m2/g, and organic particles such as ethyl pillared double stearic amide (EBS), aluminum stearate, MQ silicone resin and so on; (2) 1 to 30 percent fatty alcohol; (3) 5 to 70 percent fatty alcohol polyether; (4) 5 to 50 percent fatty alcohol polyether; (5) 5 to 60 percent common group modified polyether; (6) 1 to 10 percent polyether organic silicon modification, also simply called 'silicon polyether'. The invention is a cheap and high-efficiency defoaming agent for a linerboard paper making, improves the performance by complex and increasing effect of the components, and further solves the problem of the foams in the boxboard production system.

Description

technical field [0001] The present invention relates to the preparation of a defoamer for cardboard papermaking. The defoamer is a fine chemical additive. Therefore, the preparation of a defoamer for cardboard papermaking belongs to special chemicals for papermaking formulation field. Background technique [0002] Papermaking is a key industry in the production of the national economy, and container boards account for a large proportion in the papermaking industry. According to statistics, in 2005 my country's container board production was 9.8 million tons, an increase of 18.07% year-on-year, 1.38 million tons of imported kraft liner board and kraft linerboard were imported, and the annual container board consumption was 1.15 million tons, a year-on-year increase of 14%. The production of corrugated paper in 2005 was 9.5 million tons, an increase of 17.28% year-on-year, and the annual consumption was 10.35 million tons, an increase of 12.38%. At present, major domestic ma...

Claims

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Application Information

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IPC IPC(8): D21H21/12
Inventor 吴飞曹治平孙颖欣钟翔池跃芹
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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