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Dispersible papermaking lubricant and preparation method thereof

A dispersive and lubricant technology, which is applied in papermaking, textiles, papermaking, paper coatings, etc., can solve the problems of poor storage stability, long storage time, easy layering, etc., and achieves improved storage stability, simple preparation process, solid The effect of a wide content range

Active Publication Date: 2010-02-17
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, disperse and heat up to 80°C, add 284 grams of stearic acid in a molten state, and the addition time is 0.5 hours. Material, dehydration (the same below) in the SB / SS type three-legged type upper discharge centrifuge, obtains the calcium stearate that weight solid content is 60%, this calcium stearate 505 grams and 2.47 grams of water disperse, add 2.22 grams of sodium lauryl sulfate, 1.48 grams of emulsifier MOA-3 (Jiangsu Haian Petrochemical Plant) (fatty alcohol polyoxyethylene condensate, n=3), after dispersion, grind in a grinder to obtain A dispersive lubricant with a solids content of 60% by weight.

[0022] The obtained product has an average particle size of 0.05 μm and a viscosity of 800 cps. Viscosity test uses NDJ-1 rotational viscometer 2# rotor; particle size test uses JL-1155 laser particle size distribution analyzer. The equipment used in the following ...

Embodiment 2

[0024] Add 58 grams of magnesium hydroxide and 1,000 grams of water to a four-necked flask with a thermometer, disperse and heat up to 70° C., add 100 grams of molten lauric acid, the addition time is 2 hours, react for 3.5 hours, and the product is cooled and discharged. Dehydration obtains the magnesium laurate that weight solid content is 50%, this magnesium laurate 213.4 grams and 338.7 grams of water disperse, add polyethylene glycol stearic acid monoester 2.9 grams, triethylhexyl phosphate (Jiande City Xinde Chemical Industry) 1.74 grams, uniformly dispersed, and then ground to obtain a dispersive lubricant with a solid content of 20%. The obtained product has an average particle diameter of 0.5 μm and a viscosity of 250 cps.

Embodiment 3

[0026] Add 171.3 grams of barium hydroxide and 1000 grams of water to a four-necked flask with a thermometer, disperse and heat up to 100°C, add 452 grams of triacic acid in a molten state, add the addition time for 1.5 hours, react for 5 hours, and cool the product out. Material, dehydration, obtain the barium triacionate that solid content is 85%, 567.4 grams and 37.26 grams of water dispersions of this barium trianoate, add sorbitan polyoxyethylene stearate monoester 0.34 gram, hydroxypropyl methyl 6.85 grams of cellulose, evenly dispersed and then ground to obtain a dispersive lubricant with a solid content of 80%. The average particle size of the product is 0.1μm, and the viscosity is 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 dispersed papermaking lubricant with higher fatty acid salt as raw material and a preparation method thereof. technical background [0002] The high-grade fatty acid salt lubricant is a water-insoluble metal soap surfactant, commonly known as SCD dispersion liquid in China, and NOPCOTE C-104 in foreign countries. Generally, it is made into a water-suspension dispersion with a weight content of about 50%, and it is added to the paint at 0.5-5% of the absolute dry weight of the pigment, and its lubricating effect is also very obvious. [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 ...

Claims

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Application Information

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Patent Type & Authority Applications(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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