Amphoteric retanning fatting agent and preparation method thereof

Abstract

The invention discloses an amphoteric retanning fatting agent and a preparation method thereof. The preparation method of the amphoteric retanning fatting agent comprises the steps that maleic anhydride, maleic anhydride monoamide, acrylic acid and tri-methylamino ethyl methacrylate serve as raw materials, wherein maleic anhydride monoamide is generated through a reaction of amine C12, amine C13, amine C14, amine C15, amine C16, amine C17 and amine C18; terpolymer is synthesized; and then, terpolymer is compounded with vegetable-oil-modified phosphate ester, so that the amphoteric retanning fatting agent is generated. The retanning fatting agent has the double functions of retanning and fatting; technological time can be shortened; and in addition, due to the amphoteric structure of the retanning fatting agent, bleaching cannot occur, and besides, other chemical materials can be assisted in permeation and absorption.

Description

technical field

[0001] The invention relates to the field of leather chemical materials, in particular to an amphoteric retanning and fatliquoring agent and a preparation method thereof. Background technique

[0002] Since the retanning and fatliquoring agent can combine the retanning and fatliquoring processes into one, it is helpful to shorten the production cycle when used in tanning production. In addition, because more groups are introduced, its bonding points are more and the bonding degree is lower. High, also helps to reduce the BOD and COD value of wastewater, so more and more attention has been paid to the research on retanning and fatliquoring agents, and it has become a hot spot in the industry.

[0003] The combination of the retanning and fatliquoring process has a positive contribution to environmental protection compared with the traditional production process:

[0004] 1. Can save about 20% of the total water consumption

[0005] 2. Compared with the tradi...

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