Method for preparing vinyl polymer/inorganic nanoparticle composite tanning agent by in-situ cyclopolymerization method

Abstract

The invention discloses a method for preparing a vinyl polymer / inorganic nanoparticle composite tanning agent by an in-situ cyclopolymerization method. The vinyl polymer / inorganic nanoparticle composite tanning agent is prepared from dimethyl diallyl ammonium chloride, vinyl monomer and inorganic nanoparticles serving as raw materials by the in-situ cyclopolymerization method. The nanoparticle composite tanning agent has certain tanning effect and can increase absorption ratio of chrome-tanning liquid waste and enhance the dyeing and fat-liquoring effect when combined with 2 percent chrome powder to taw pickled raw sheep skin; the thickness of the finished leather is obviously increased after the tanning; the physical and mechanical performance is superior, and the finished leather is endowed with certain antibacterial and anti-ultraviolet performance; and thus the nano composite tanning agent is environment-friendly. The invention provides a new method for preparing the polymer-based nano tanning agent by the in-situ cyclopolymerization method; and the prepared nano composite tanning agent can reduce the using amount of a conventional chromium tanning agent by 75 percent; and therefore, the method is clean tanning technology which can reduce the chromium pollution from the source and has important practical significance.

Description

technical field

[0001] The invention belongs to the technical field of leather chemical industry, in particular to an in-situ cyclopolymerization method for preparing a vinyl polymer / inorganic nano particle composite tanning agent. Background technique

[0002] With the rapid development of the leather industry in our country, our country has become the manufacturing center and trading center of the world's leather industry. my country's tanning industry produces about 200 million pieces of leather every year, covering about 640 million square meters. In 2008, the total industrial output value of enterprises above designated size in the leather, fur and products industry was 561.1 billion yuan, and foreign exchange earnings from exports reached 42.53 billion US dollars. However, while the tanning industry is speeding up my country's economic development, it also brings some problems, such as environmental pollution and anti-dumping investigations on export products, etc., wh...