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Pulverous sizing agent synthesis process

A synthesis process and sizing agent technology, applied in the direction of water repellent addition, etc., can solve the problems of high production costs, achieve the effects of saving costs and protecting the forestry ecological environment

Inactive Publication Date: 2007-12-12
SHE COUNTY BAIYI FINE CHEM FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two methods are to dry the existing sizing agent by spray drying, and the production cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Prepare gelatinized carboxymethyl starch.

[0030] Feeding in the enamel reaction kettle: 1000 kg of water, 100 kg of carboxymethyl starch, after feeding the materials, stir for 30 minutes, then raise the temperature to above 90°C, keep the temperature and stir for 2 hours, cool down to 60°C and discharge, pass through 80 mesh Sieve and filter to obtain gelatinized carboxymethyl starch.

[0031] 2. Preparation of dispersant

[0032] Mix 400 kg of water and 200 kg of MS-01 starch for 15 minutes. When the temperature rises to 40°C, start to add NaOH solution with a weight concentration of 30. After 30 minutes, add a total of 42 kg of lye and heat up to 70°C. , add 70 kg of etherification agent 188, then raise the temperature to 90°C, react at 85-90°C for 1 hour, add 8 kg of glacial acetic acid, react at 90-95°C for 2 hours, add 200 kg of water, and stir for 20 minutes , Blowing, centrifugal filtration, dispersant.

[0033] 3. Glue reaction process.

[0034] Petrole...

Embodiment 2

[0039] In addition to the drying process is:

[0040] Spread the dispersed rubber on a stainless steel tray with a thickness of 15-20cm, move it to a drying room at 75-80°C, bake for 4-5 hours, then cool the material, pour it into a baking pan, and dry it The temperature of the pot is 180-200°C, stir for 10 minutes under the condition of 15r / min, and then crush the material to 80-100 mesh through a pulverizer, and then put the crushed material into a tray with a thickness of 30-40cm, and move it to In a drying room at 80-90°C, bake for 6-8 hours, remove and cool, and then obtain the finished powdery SBC sizing agent, and the rest are the same as in Example 1.

Embodiment 3

[0042] In addition to the raw materials used in the glue reaction is C 9 、C 5 It is a mixed petroleum resin, and its weight ratio is: C 9 Department: C 5 System=1: 1.5, all the other are identical with embodiment 2.

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PUM

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Abstract

The invention discloses a synthesis art of powder sizing agent, it includes glue reaction procedure, glue dispersing procedure and drying procedure; compared with prior technology, the invention replaces the rosin resin with oil resin, saves cost and it is helpful for the protection of forestry and ecological environment.

Description

Technical field: [0001] The invention belongs to the technical field of the synthesis process of the sizing agent, in particular to the technical field of the synthesis process of the powdered sizing agent for papermaking. Background technique: [0002] The sizing agent is mainly used in the papermaking process to sizing the pulp to improve the water resistance and impermeability of the paper. The usage amount per ton of paper is 5-10kg. Sizing agents are divided into emulsion and powder sizing agents. Emulsion sizing agents are not easy to store and transport, and the cost of use is also high. Therefore, powder sizing agents that are easy to transport have become the current development trend of sizing agents. [0003] "Papermaking Chemicals" 1996.3 introduced a powdery soluble AKD neutral sizing agent. The technical solution is to wrap AKD particles with suitable capsules so that they do not stick to each other, and then spray dry That's it. [0004] "Zhejiang Papermakin...

Claims

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Application Information

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IPC IPC(8): D21H21/16
Inventor 邵百成何方
Owner SHE COUNTY BAIYI FINE CHEM FACTORY
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