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Water-based visible light driven film-forming coating agent for ecological synthetic leather

A synthetic leather and visible light technology, applied in the field of synthetic leather, can solve the problems of poor anti-adhesive performance of water-based polyurethane resin

Inactive Publication Date: 2022-01-21
LISHUI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The finishing agent can be used on the surface of solvent-based synthetic leather or water-based synthetic leather, which solves the problem of poor anti-adhesive performance of water-based polyurethane resin, and the gloss, anti-adhesive performance and low-temperature storage stability of the product are better than Existing solvent-based polyurethane leather treatments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] Firstly, adipic acid and oligomeric tetrahydrofuran diol have a molar ratio of 1:1.5, and concentrated sulfuric acid is used as a catalyst at 85°C to react for 4 hours under vacuum distillation and dehydration in a water bath to prepare polyester-polyether diol;

[0010] Next, calcinate urea in a nitrogen atmosphere at 550°C for 3 hours, and then continue to calcinate it in an air atmosphere at 550°C for 3 hours after cooling. Hydroxyethyl acrylate is the end-capping agent, IPDI is the hard segment, and the molar ratio is 1:0.1:0.5:1, and reacted at 80°C with dibutyltin dilaurate as the catalyst (0.1 wt%) for 3 hours, and set aside; finally, pass The photoinitiator BASF184 / Irgacure261 is mixed according to the molar ratio of 1:1, according to the total addition amount of 0.5 wt%, water 23 wt%, the prepared pre-polyurethane acrylate 65 wt%, and diluent TPGDA 11.5 wt%. , to obtain a water-based visible light-driven film-forming finishing agent for ecological synthetic lea...

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PUM

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Abstract

The invention relates to the field of synthetic leather, in particular to a water-based visible light driven film-forming coating agent for ecological synthetic leather. The preparation method of the coating agent comprises the following four steps of firstly, synthesizing high-physical-property polyester-polyether modified polyol from adipic acid and oligomerized tetrahydrofuran dihydric alcohol, then calcining urea for multiple times to prepare flaky C3N4 with excellent dispersing performance, then, taking polyester-polyether glycol as a soft segment, micromolecular glycol as a chain extender, and hydroxyethyl acrylate as an end-capping reagent, introducing double bonds with photocuring activity to a polyurethane main chain, and finally, compounding a photoinitiator to obtain the water-based visible light driven film-forming coating agent for the ecological synthetic leather. The coating agent can be used on the surface of solvent type synthetic leather and the surface of water-based synthetic leather, the problem that water-based polyurethane resin is poor in anti-sticking performance is solved, and the glossiness, the anti-sticking performance and the low-temperature storage stability of a product are superior to those of an existing solvent type polyurethane leather treatment agent. In addition, the prepared coating agent also has the functions of degrading organic waste gas, realizing visible light self-driving, saving energy, reducing consumption and being ecological and environment-friendly.

Description

technical field [0001] The invention relates to the field of synthetic leather, in particular to an ecological finishing agent for synthetic leather. Background technique [0002] The water-based visible light-driven film-forming finishing agent for ecological synthetic leather is a finishing agent required in ecological synthetic leather. It can endow the production of synthetic leather with energy saving and environmental protection, and at the same time, it can also give synthetic leather a certain feel. Most of the existing synthetic leather finishing agents are solvent-based polyurethane resins, which are prepared by diluting with solvents and adding various additives. When in use, they are coated on the surface of synthetic leather and then heated to volatilize the solvent, forming a polymer on the surface of synthetic leather. Ammonia finish. The existing synthetic leather finishing agents have the following deficiencies: 1. Since solvent-type polyurethanes usually u...

Claims

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Application Information

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IPC IPC(8): C09D175/16C08G18/75C08G18/67C08G18/66C08G18/42C08G18/32
CPCC09D175/16C08G18/755C08G18/664C08G18/4252C08G18/672
Inventor 胡金刚任俊达吴雪宁吴婕杨琪
Owner LISHUI UNIV