DIETHOXYL DIALLYL AMMONIUM CHLORIDE DERIVATIVES, PREPARATION METHOD AND USE THEREOF IN LEATHER RETANNING AND FAT-LIQUORING AGENT

摘要

Provided are diethoxyl diallyl ammonium chloride derivatives, preparation method and use thereof in leather retanning and fat-liquoring agent. Diethoxyl diallyl ammonium chloride derivatives represented by formula la or lb are crosslinked quaternary ammonium salt type amphipathic copolymer, wherein the aqueous solution of crosslinked quaternary ammonium salt type amphipathic copolymer of formula la or lb with a solid content of 30 wt% has a dynamics viscosity of 500-5,000 mPas, measured by cone/plate measuring system at 23 ℃ and with a rotate speed of 29.01 s^-1 according to ISO3219. The redundant hydroxyls of the quaternary ammonium salt type amphipathic copolymer can be blocked by metal salts as required, thereby imparting waterproofness to the leather without any influence on the coating of the leather. The obtained waste water from the tanning can be handled easily, thereby reducing the cost of the water treatment.