Hydrosol polyacrylate leather filling resin and preparation method thereof

Abstract

The invention belongs to the field of leather chemical engineering, and provides hydrosol polyacrylate leather filling resin and a preparation method thereof. The leather filling resin is characterized by comprising the following raw materials by mass percent: 0.2-0.5% of reactive emulsifier, 0.1-0.3% of initiator, 0.5-2% of emulsifier, 15-25% of acrylate monomer, 1-3% of crylic acid, and the balance of water. The hydrosol leather filling resin has very good effect in filling the loose face of the leather, so that the finished leather is more plump and compact, and the re-finishing property of the leather is not affected.

Description

technical field [0001] The invention belongs to the field of leather chemical industry, and in particular relates to a water-sol-based polyacrylate leather filling resin and a preparation process thereof. Background technique [0002] The loose surface and peeling of leather seriously damage the physical and mechanical properties, reduce the grade and utilization rate of leather, and become a difficult problem in my country's leather industry. Acrylic polymers have good weather resistance, friction resistance, and color retention, and the penetration of latex of such polymers on leather is easy to adjust. The degree of hardness and softness of the material can also be freely adjusted by changing the ratio of monomers. Therefore, acrylic acid-based copolymers are often used for leather filling modification. Simple acrylic resin emulsions generally cannot meet the requirements of leather filling, so most of the acrylic resins currently used for leather filling have been mod...

AI Technical Summary

Problems solved by technology

[0004]1. The content of emulsifier is higher than 10%. The emulsifier is usually a small molecular substance, which is combined by physical adsorption and will migrate when forming a film; the amount of emulsifier Too much, the water resistance of the leather will be poor; since the filling resin is used for leather filling, too much emulsifier will affect the performance of leather filling and the adhesion between coats

[0005]2. Co-emulsifiers are needed, which are organic solvents. The use of organic solvents is not conducive to environmental protection; at the same time, organic solvents will have a bad effect on leather

The amphiphilic solvent used in this patent is an organic solvent, which is not conducive to environmental protection and will have a bad effect on leather