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Dispersible papermaking lubricant and preparation method thereof

A dispersive and lubricant technology, applied in papermaking, textiles and papermaking, fiber raw material processing, etc., can solve the problems of poor storage stability, easy layering, long storage time, etc., to achieve improved storage stability and a wide range of solid content , The effect of simple preparation process

Active Publication Date: 2011-09-28
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] High-grade fatty acid salt dispersions have been used as coating lubricants for coated paper in my country's paper industry as early as the early 1980s. At present, dispersed lubricants are produced all over the country, but the production process is complicated and the solid content is low. , the solid content is basically between 40 and 45%.
If the storage time is a little longer, the product is easy to turn yellow, has peculiar smell, and is easy to delaminate, etc.
In addition, a small amount of products with high solid content have high viscosity, coarse dispersoid particles, and poor storage stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 74 grams of calcium hydroxide and 1000 grams of water to a four-necked flask with a thermometer. The temperature is increased to 80°C, and 284 grams of stearic acid in a molten state are added. The addition time is 0.5 hours. After reacting for 1 hour, the product is cooled out. The material is dewatered in the SB / SS three-foot upper discharge centrifuge (the same below) to obtain calcium stearate with a solid content of 60% by weight. 505 grams of calcium stearate is dispersed in 2.47 grams of water, and added 2.22 grams of sodium lauryl sulfate, 1.48 grams of emulsifier MOA-3 (Jiangsu Haian Petrochemical Plant) (fatty alcohol polyoxyethane condensate, n=3), after dispersion, grind in a grinder to obtain A dispersible lubricant with a solid content of 60% by weight.

[0022] The obtained product has an average particle size of 0.05μm and a viscosity of 800cps. Viscosity test uses NDJ-1 rotary viscometer 2# rotor; particle size test uses JL-1155 laser particle size di...

Embodiment 2

[0024] Add 58 grams of magnesium hydroxide and 1000 grams of water into a four-necked flask with a thermometer, and add 100 grams of molten lauric acid to the temperature of 70°C. The addition time is 2 hours, the reaction is 3.5 hours, and the product is cooled and discharged. Dehydrate to obtain magnesium laurate with a solid content of 50% by weight. Disperse 213.4 g of magnesium laurate with 338.7 g of water. Add 2.9 g of polyethylene glycol stearate and triethylhexyl phosphate (Jiande City). Xinde Chemical Co., Ltd.) 1.74 g, uniformly dispersed, and then ground to obtain a dispersible lubricant with a solid content of 20%. The obtained product has an average particle size of 0.5μm and a viscosity of 250cps.

Embodiment 3

[0026] Add 171.3 g of barium hydroxide and 1000 g of water into a four-necked flask with a thermometer. The temperature is increased to 100 ℃, and 452 g of triaconic acid in molten state is added. It is dehydrated to obtain barium triaconate with a solid content of 85%. 567.4 g of barium triaconate is dispersed in 37.26 g of water, and 0.34 g of sorbitan polyoxyethylene stearate monoester, hydroxypropyl methyl 6.85 grams of cellulose, uniformly dispersed and ground to obtain a dispersible lubricant with a solid content of 80%. The product has an average particle size of 0.1μm and a viscosity of 530cps.

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PUM

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Abstract

The invention provides a dispersible papermaking lubricant and a preparation method thereof. The preparation method comprises the following steps: (1) adding molten higher fatty acid in alkaline compound water solution of which temperature is 70-100 DEG C to react for 1-5h; (2) dewatering the obtained product, mixing the product, dispersant, emulsifier and water and grinding to obtain the dispersible papermaking lubricant. The preparation method of the dispersible papermaking lubricant has easy process and simple operation; in addition, the product has wide solid content range, low viscosity,good stability and higher storage stability, and the dispersant is easier to perform biodegradation, thus meeting the environmental protection requirement.

Description

Technical field [0001] The invention relates to a dispersion type papermaking lubricant using higher fatty acid salts as raw materials and a preparation method thereof. technical background [0002] The higher fatty acid salt lubricant is a water-insoluble metal soap surfactant, commonly known as SCD dispersion in China, and NOPCOTE C-104 abroad. Generally, it is made into an aqueous suspension dispersion with a weight content of about 50%, and 0.5 to 5% of the absolute dry amount of the pigment is added to the paint, and its lubricating effect is also very obvious. [0003] High-grade fatty acid salt dispersions as coating lubricants for coated paper were used in my country’s paper industry as early as the early 1980s. At present, dispersion lubricants are produced all over the country, but the production process is complex and the solid content is low. , The solid content is basically between 40-45%. If the storage time is a little longer, the product is easy to turn yellow, has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/14D21H19/46
Inventor 施晓旦李丽王养臣
Owner SHANGHAI DONGSHENG NEW MATERIALS
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