Water-based specially-misty and specially-black surface treating agent for synthetic leather and preparing method thereof

Abstract

The invention discloses a water-based specially-misty and specially-black surface treating agent for synthetic leather and a preparing method thereof. The surface treating agent is prepared from 45wt% of water-based polyurethane, 40wt% of deionized water, 2wt% to 4wt% of surfactant, 6wt% of silicon dioxide, 3wt% to 5wt% of calcium carbonate, 1wt% of mineral oil and 1wt% to 3wt% of acrylic acid oligomers. The preparing method includes the following steps: 1, the 45wt% of water-based polyurethane is placed into a stirring kettle, the 40wt% of deionized water, the 2wt% to 4wt% of surfactant, the 6wt% of silicon dioxide and the 3wt% to 5wt% of calcium carbonate are sequentially added during low-speed stirring; 2, high-speed stirring is carried out for 20 minutes, and then the 1wt% of mineral oil and the 1wt% to 3wt% of acrylic acid oligomers are sequentially added. According to the surface treating agent and the preparing method, as the water is used as solvents, the cleaner aim and the more environmentally friendly aim are achieved in the production process and the use process, the synthetic leather treated with the surface treating agent is good in color developing performance, the down feeling and the misty degree of the bottoms of lines are quite high, and the high leather feeling is achieved.

Description

technical field [0001] The invention relates to the field of synthetic leather surface treatment agents, in particular to a synthetic leather water-based special fog special black surface treatment agent and a preparation method thereof. Background technique [0002] Synthetic leather simulates the structure and performance of natural leather, and is an ideal substitute for natural animal fur. Synthetic leather usually uses fabric as the substrate, and uses microporous polyurethane coating to simulate the grain layer, so that the front and back sides are very similar to Tianre leather, and has a certain degree of air permeability. It is widely used in sofas, clothing, Footwear, ball games, luggage and decoration and other fields. [0003] Because the surface of synthetic leather is often shiny and has a strong plastic feel, in order to make the appearance and feel of synthetic leather closer to natural leather, various finishes and treatments are usually done on the surface...

AI Technical Summary

Problems solved by technology

However, most of the surface finishing agents and treatment agents for synthetic leather are solvent-based at present, and a large amount of organic solvents will be consumed in the process of production and use. Since organic solvents pose serious threats to fire, the environment, employee health, and consumers, the development of Synthetic leather finishing agents that replace organic solvents with water will be the future development direction