Method of preparing higher fatty acid salt lubricant

A high-grade fatty acid salt and high-grade fatty acid technology, which is applied in textiles and papermaking, fiber raw material processing, non-fibrous pulp addition, etc., can solve the problems of easy yellowing, long storage time, and easy layering of products, and achieve small particle size , less dosage, good stability

Active Publication Date: 2009-09-23
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the storage time is a little longer, the product is easy to turn yellow, has peculiar smell, and is easy to delaminate, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 100 grams of lauric acid to a four-neck flask with a thermometer, raise the temperature to 85°C, and after it is completely melted, add 0.37 grams of emulsifier sorbitan monooleate under stirring and react for 0.5 hours until the system becomes translucent Microemulsion, add 7.4 grams of sodium polyacrylate dispersant, stir evenly, add 74 grams of calcium hydroxide to 149 grams of deionized water to form a suspension, slowly add it to the flask, and keep the temperature of the system not lower than 40 °C at the rate of addition. After 4 hours of heat preservation reaction, the temperature is rapidly lowered, and after being polished by a sand mill and treated by a homogenizer, the average particle size of the obtained product is 20nm. Viscosity 500cps, solid content 55%.

Embodiment 2

[0021] Add 100 grams of stearic acid into a four-necked flask with a thermometer, raise the temperature to 80 ° C, and after it is completely melted, add 0.51 grams of emulsifier polyoxyethylene nonylphenol under stirring and react for 0.5 hours until the system becomes translucent and slightly For the emulsion, add 0.1 g of sodium oleate dispersant, stir evenly, add 51 g of magnesium hydroxide to 185 g of deionized water to form a suspension, and slowly add it to the flask at a speed that keeps the temperature of the system not lower than 50°C. After 6 hours of heat preservation reaction, the temperature is rapidly lowered, and after being polished by a sand mill and pressurized by a homogenizer, the obtained product has an average particle size of 35nm, a viscosity of 250cps, and a solid content of 45%.

Embodiment 3

[0023] Add 100 grams of triacic acid to a four-necked flask with a thermometer, heat up to 95° C., and after it is completely melted, add 1.08 grams of emulsifier polyoxyethylene fatty acid ester (N-430) under stirring.

[0024] React for 1 hour, until the system is a translucent microemulsion, add 1.6 grams of AEO-20 methyltrichlorosilane, stir evenly, add 53.8 grams of zinc oxide to 1408 grams of deionized water and slowly add it to the flask, and the speed of addition maintains the temperature of the system Not lower than 95°C. After 8 hours of heat preservation reaction, the temperature is rapidly lowered, and after being polished by a sand mill and treated by a homogenizer, the average particle size of the obtained product is 65nm. Viscosity 250cps, solid content 10%.

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Abstract

The invention provides a preparation method of a higher fatty acid salt lubricant, comprising the following steps: heating the higher fatty acid to dissolve, then adding an emulsifier to emulsify the higher fatty acid into a translucent emulsion, and then adding a dispersant to stabilize , stirring, adding the basic compound, reacting at 50-95°C for 4-8 hours, and mechanically dispersing and homogenizing the obtained product to obtain a high-grade fatty acid salt lubricant. The invention not only has the advantages of small particle size and low viscosity, but also has the advantages of good stability and less dosage. Due to the small particle size and large specific surface area of ​​this product, the dispersion is relatively uniform during the high-speed coating process of the coating, and the fluidity and leveling properties are good. Effectively solve the technical defects in the production of calcium stearate lubricant at present.

Description

technical field [0001] The invention relates to a preparation method of a superfine lubricant using higher fatty acid salt as a raw material, which is mainly used as an auxiliary agent and a functional auxiliary agent in the papermaking coating process. 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-suspended dispersion of about 50%, and added to the paint with 0.5-5% of the dry weight of the pigment, and its lubricating effect is 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, calcium stearate lubricants are produced all over the country, but the solid content is basically 40~ Between 45%, the solid content is low. If the storage time is a little...

Claims

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Application Information

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