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Higher fatty acid salt lubricant agent and preparation and application thereof

A high-grade fatty acid salt and high-grade fatty acid technology, applied in textiles and papermaking, fiber raw material processing, paper coating, etc., can solve the problems of high-speed papermaking coating sticking and rolling, easy yellowing, high viscosity, etc., to achieve uniform dispersion and stability Good, low viscosity effect

Inactive Publication Date: 2008-12-10
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] U.S. Patent No. 4,676,836 uses anionic emulsifier as a lubricant component to prepare an anionic coating lubricant with a solid content of 50-75%, but its viscosity is relatively high, with a maximum viscosity of 1700cps; and due to the use of a large amount of urea to increase the solid content , so that the product is easy to turn yellow during storage, which brings problems such as sticking and cracking for high-speed paper coating

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-necked flask with a thermometer, raise the temperature to 80°C, and after all of it melts, add the solution formed by adding 28 grams of potassium hydroxide to 183.2 grams of deionized water into the flask, and then Add sodium polyacrylate dispersant ( A11, Guangzhou Oupeng Chemical Factory) 0.06 g, react at 50°C for 5 minutes, add 55.5 g of calcium chloride aqueous solution with a weight concentration of 50%, continue to react for 30 minutes, cool down to 50°C, add 0.14 g of emulsifier under stirring MOA-3 (fatty alcohol polyoxyethylene (3) ether, Xingtai Lanxing Chemical Factory) reacted for 0.5 hour, and the average particle size of the product obtained was 78nm. Viscosity 114cps, solid content 42.5%.

Embodiment 2

[0021] Add 100 grams of stearic acid to a four-necked flask with a thermometer, raise the temperature to 80°C, and after it is completely melted, add 24.65 grams of ammonium hydroxide to 82.5 grams of deionized water to dissolve, then add it to the flask, and then add oil Sodium acid dispersant (Shanghai Shunqiang Reagent Co., Ltd.) 1.17 grams, after reacting at 70°C for 30 minutes, add 235.96 grams of barium chloride aqueous solution with a weight concentration of 50%, after reacting for 60 minutes, cool down to 50°C, and add 1.18 g of emulsifier NP-7 (nonylphenol polyoxyethylene (7) ether, Zibo Meijie Chemical Factory) was reacted for 0.5 hour, and the average particle size of the obtained product was 51 nm, viscosity was 497 cps, and solid content was 55%.

Embodiment 3

[0023] Add 100 grams of hexadecanic acid to a four-necked flask with a thermometer, raise the temperature to 90 ° C, and after it is completely melted, add the solution formed by adding 46.88 grams of sodium hydroxide to 269.6 grams of deionized water into the flask, and then Add 3.06 grams of dispersant methyltrichlorosilane, react at 80°C for 50 minutes, add 204 grams of 50% zinc chloride aqueous solution, continue the reaction for 90 minutes, cool to 40°C, add 3.06 grams of emulsifier TX-10 ( Nonylphenol polyoxyethylene (10) ether, Jiangsu Lingfei Chemical Factory) was reacted for 0.5 hour, and the average particle diameter of the obtained product was 200nm. Viscosity 200cps, solid content 40.7%.

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Abstract

The invention discloses a higher fatty acid salt lubricant and a preparation method and an application thereof. The preparation method comprises the following steps that: higher fatty acids are heated up to be melted and added with alkali compounds and dispersants to react for 5 to 12min, the reaction temperature is between 50 and 98 DEG C; the mixture is added with soluble metallic salt to continuously react for 5 to 180min and cooled down to the temperature below 50 DEG C; and the mixture is added with emulsifying agents to continuously react for 30 to 180min, the higher fatty acid salt lubricant is finally prepared. Compared with the prior art, the higher fatty acid salt lubricant has the advantages of high solid content, small grain diameter, low viscosity, good stability and less consumption, etc. Because the product is small in grain diameter and big in specific surface area, the higher fatty acid salt lubricant is evenly dispersed in the process of high speed coating, and has good flowability and leveling property.

Description

technical field [0001] The invention relates to a high-grade fatty acid salt lubricant 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-suspended dispersion with a weight concentration 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 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, stearate lubricants are produced all over the country, but the weight solid content is basically 40. ~45%, low solid content. If the storage time is a little longer, the product will easily turn yellow, have peculiar smell, and be easy to delaminate. In addition,...

Claims

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Application Information

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IPC IPC(8): D21H19/46
Inventor 施晓旦李丽王养臣
Owner SHANGHAI DONGSHENG NEW MATERIALS