Synthetic leather water-based mist-surface skin-feeling high-temperature-resistant pretreatment agent and preparation process thereof

Abstract

A synthetic leather water-based mist-surface skin-feeling high-temperature-resistant pretreatment agent and a preparation process thereof are disclosed. The synthetic leather water-based mist-surface skin-feeling high-temperature-resistant pretreatment agent comprises the following raw materials by weight: 30-40% of waterborne polyurethane, 10-15% of an emulsifier, 1-3% of polyether modified amino silicone oil, 0.5-1% of a polyether polyester modified organo-siloxane leveling agent, 2-5% of a silicon ether copolymer defoaming agent, 5-10% of light extinction powder, 0.5-2% of a waterborne polyurethane associative thickener and 40-60% of water. The waterborne polyurethane is prepared from diisocyanate, a polyol, an extender, a catalyst and a neutralizer by an acetone method. The synthetic leather water-based mist-surface skin-feeling high-temperature-resistant pretreatment agent uses the water as a solvent for replacement of a poisonous solvent, has the propertied of being non-burning, safe, environmentally-friendly and cost-saving, and has the advantages of good film forming property, solvent resistance, cold resistance, hydrolysis resistance, high temperature resistance and embossing. The synthetic leather prepared by the synthetic leather water-based mist-surface skin-feeling high-temperature-resistant pretreatment agent has the advantages of no change in hand feeling before and after the embossing, fullness, fineness and good permeability, and the like.

Description

Technical field [0001] The invention relates to a surface treatment agent for synthetic leather, in particular to a water-based matte skin-feel high-temperature resistant pretreatment agent for synthetic leather used in the back-end process of synthetic leather and a preparation process thereof. Background technique [0002] Polyurethane leather surface treatment agent can be surface-coated according to the product category. The coating is thin, soft and elastic. It has strong adhesion to the leather and gives the synthetic leather a high degree of beauty. The color is uniform, the color is natural and soft, and the hand feels moist. , Closer to real leather, polyurethane leather surface treatment agent has attracted more and more attention from the leather industry with its excellent performance. As the world pays more and more attention to environmental protection, the production of polyurethane has undergone great changes this year. The original high-pollution solvent-based po...

AI Technical Summary

Problems solved by technology

In recent years, consumers have higher and higher requirements on the physical properties of the leather surface such as color and feel, and the water-based matte skin feel and high temperature resistant pre-treatment agent for synthetic leather is pre-treated and post-embossed. Compared with the post-treated synthetic leather surface The color is uniform, the hand feeling does not change before and after embossing, the physical properties such as adhesion are further improved, and the surface of synthetic leather is not sticky under high temperature conditions. However, the water-based matte skin feel and high temperature resistance pretreatment agent for synthetic leather has not yet been developed. see the report