Natural phospholipid compound greasing agent and preparation method thereof

Abstract

The invention provides a natural phospholipid compound greasing agent and a preparation method thereof. The natural phospholipid compound greasing agent consists of natural phospholipid, sulfitation neat's foot oil and fatty alcohol phosphate. The natural phospholipid compound greasing agent for greasing can improve the waterproof performance and fullness of leather and achieve satisfying greasing effect; and the natural phospholipid compound greasing agent is suitable for greasing light color leather due to light color. The method for preparing the natural phospholipid compound greasing agent comprises the following steps of: (1) heating natural phospholipid to between 50 and 70 DEG C, adding a compound decolorizing agent into the natural phospholipid, fully reacting the mixture for 3 to 4 hours, and then adding the following components in percentage by weight into the mixture: 7 to 10 percent of compound emulsifying agent, 7.5 to 10 percent of sulfitation neat's foot oil and 7.5 to 10 percent of fatty alcohol phosphate; keeping the temperature between 50 and 70 DEG C, stirring the components for 1 hour and mixing the components uniformly; (2) adding 30 percent sodium hydroxide solution into the grease mixture to perform neutralization, and adjusting the pH value to between 6.0 and 8.0; and (3) slowly adding a certain amount of distilled water (preheated to 80 DEG C) into the mixture to keep the oil content between 48 and 52 percent, and fully stirring the mixture for 2 to 5 hours to obtain the modified phospholipid compound greasing agent.

Description

technical field [0001] The present invention relates to a composite fatliquor and a preparation method thereof, more particularly, the present invention relates to a natural phospholipid composite fatliquor composition and a preparation method thereof. Background technique [0002] Fatliquor is the largest chemical material in leather production, and one of the important chemical materials in leather processing. It can not only lubricate the leather fibers, prevent the leather from being stiff and cracked, but also make the leather have corresponding toughness and softness, maintain its strength, and at the same time play a certain filling role to make the leather plump and elastic. One of the important factors affecting the quality and performance of leather. In the study of fatliquor, fatty alcohol phosphate ester, fatty acid higher alcohol ester, beef hoof oil, lanolin, natural phospholipid, synthetic macromolecular polyphosphate, etc. have good filling properties. Amon...

AI Technical Summary

Problems solved by technology

However, the natural phospholipid has a darker color, so it is not suitable to be used as a fatliquoring agent for light leather white leather, and its HLB value is low, and its hydrophilicity is poor. Direct use cannot meet the fatliquoring requirements, and it is easy to adhere to the leather surface and cause pollution.