Environment-friendly catalyst and preparation method thereof

Abstract

The invention discloses a preparation method of an environment-friendly catalyst. The method includes: reacting isocaprylic acid, bismuth oxide and solvent oil to obtain a solution, reacting isocaprylic acid, zinc oxide and solvent oil to obtain a solution, and mixing the obtained solutions to obtain a finished product. On the other hand, the invention also provides an environment-friendly catalyst, which comprises the following effective components: 20% of bismuth isocaprylate and 10% of zinc isocaprylate. The catalyst provided by the invention is environment-friendly, can completely replace lead mercury and tin catalysts that are currently abolished by legislation, has fast reaction speed when applied to polyurethane elastomers, and can significantly reduce bubbles of the product, combined use of bismuth and zinc can reach a synergistic effect, so that the formula and production can be more flexible, energy consumption is reduced, the profit can be increased, and therefore the environment-friendly catalyst provided by the invention is very suitable for application as a drier in polyurethane coating, medical polyurethane elastomer, polyurethane leather, polyurethane adhesive, polyurethane rubber, PU resin slurry, water-based paint industries and other fields.

Description

technical field [0001] The invention relates to an environment-friendly catalyst and a preparation method thereof, and relates to the field of fine chemicals. Background technique [0002] In the synthesis of polyurethane elastomers, in order to speed up the reaction and achieve rapid curing, it is often necessary to add catalysts. Commonly used catalysts include amines and organotin, organolead and organomercury catalysts. These catalysts will inevitably remain in the product. Studies have shown that amine catalysts have potential carcinogenic risks; organotin, lead, and mercury heavy metal catalysts will not only cause environmental pollution, but also cause deformity and chronic poisoning of organisms, so they are not suitable for the preparation of medical polyurethane materials and daily polyurethane materials. Material. [0003] In addition, in the production process of traditional catalysts, the reacted liquid products need to be precipitated and discharged into was...

AI Technical Summary

Problems solved by technology

Studies have shown that amine catalysts have potential carcinogenic risks; organotin, lead, and mercury heavy metal catalysts will not only cause environmental pollution, but also cause deformity and chronic poisoning of organisms, so they are not suitable for the preparation of medical polyurethane materials and daily polyurethane materials. Material

[0003] In addition, in the production process of traditional catalysts, the liquid products need to be precipitated and discharged into waste water. The heavy metals contained in the waste water will also pollute the environment.