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Synthetic process of emulsifier special for rubber

A synthesis process and emulsifier technology, which is applied in the field of synthesis process of special rubber emulsifiers, can solve the problems of high reaction temperature, incomplete reaction, long saponification reaction time, etc., and achieve high utilization rate and high purity of product effective substances.

Active Publication Date: 2009-12-09
ZIBO TENGHUI OIL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are many kinds of rubber emulsifiers, and sodium fatty acid soap is one of the important ones. The original process is to directly saponify fatty acids with sodium hydroxide in water. The saponification reaction time is long (more than 4 hours) and requires a relatively high reaction time. Temperature (80~90°C), sometimes there is incomplete reaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Put 909.7 kg of deoxygenated softened water into a stirring kettle with heating coils, under constant stirring, heat 0.1~0.5 kg of composite dispersant and raise the temperature to 50℃, then add 74.5 kg of semi-hardened tallow fatty acid (272.5mol, half The molecular weight of the hardened tallow fatty acid is calculated as 273.5). After a few minutes, all the semi-hardened tallow fatty acid is dissolved in the water, and 10.9 kg (272.5mol) of sodium hydroxide is added. After the addition, the temperature is kept at 50℃ and the reaction is stirred for 10 minutes to obtain a light yellow color. Transparent liquid, the final product is all effective. The total solid content is 8.12%, the pH value of the solution is 10.43, the iodine value is 3.1gl2 / 100g, and the unsaponifiable matter is less than or equal to 1.10%.

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PUM

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Abstract

The invention relates to the technical field of emulsifier, in particular to a synthetic process of emulsifier special for rubber and the fact is to prepare fatty acid soda soap by reacting fatty acid and sodium hydroxide in water. The invention is characterized in that compound dispersant with a reaction solution weight percent of 0.01-0.05% is added and the compound dispersant is a mixture of fatty amine ethoxylate and fatty alcohol-polyoxyethylene ether. In the invention, the fatty acid can be fully dissolved in the water; the reaction in the water phase can be accomplished completely; the utilization rate of raw materials and the purity of the effective substances of the product are high; the reaction can be completed at a low temperature (50 DEG C) in short time (10min); and the cost is reduced and the production efficiency is improved.

Description

Technical field [0001] The invention relates to a synthesis process of a special rubber emulsifier. As one of the raw materials, the emulsifier prepared by the invention is compounded with rosin potassium soap and other additives to form an emulsifier for synthetic rubber. Background technique [0002] There are many kinds of rubber emulsifiers. Sodium fatty acid soap is one of the important ones. The original process is to directly saponify fatty acids with sodium hydroxide in water. The saponification reaction time is long (more than 4 hours) and requires a higher reaction. Temperature (80~90℃), sometimes the reaction is not complete. Summary of the invention [0003] The present invention provides a new process for synthesizing a special rubber emulsifier. On the basis of the prior art, a composite dispersant is added. The addition of the composite dispersant can completely dissolve fatty acids in water, and then mix with sodium hydroxide, etc. Moll reacts completely to produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/098C08K5/06C08K5/17C08L21/00
Inventor 刘茂扬王东水王新东
Owner ZIBO TENGHUI OIL CHEM