Organobismuth catalyst, selective Environmentally friendly polyurethane catalyst , compared with tin catalysts, it has better selectivity for NCO groups, better mechanical properties of the final product, shorter induction time, and gradually increased viscosity. It can be used for leather slurry, sole solution, PU adhesive, PU coating, PU elastomer, PU sponge material, etc.
Bismuth belongs to Group 15 in the periodic table of elements. It is the most metallic element in this group and the heaviest stable element in the periodic table of elements.
Bismuth compounds have green and safe properties such as low cost, easy handling, low toxicity and low radioactivity. In the past 10 years, both the synthesis of new organobismuth compounds and the research on organobismuth compounds in organic synthesis, catalysts and biomedicine have been at a leading level. Rapid development stage. Organic bismuth products produced in advanced foreign countries have a history of more than 30 years and have been supplied to the European and American markets for many years. These environmentally friendly organic bismuth catalysts can be cured at room temperature or heated. They are an excellent choice to replace toxic lead, mercury and tin products, and are currently widely used at home and abroad.
It has better selectivity for NCO/OH groups and the mechanical properties of the final product are better;
The induction time is short and the viscosity gradually increases.
Advantages
1. Can be used alone or in combination with amines or other organometallic compounds;
2. Safe and environmentally friendly, can replace lead, mercury and current Tin was abolished by legislation;
3. In a one-component system, liberate the amine shielded by water instead of promoting the reaction between NCO and water;
4. There are more Good hydrolysis resistance and stability, reducing the selectivity of reaction with water, and reducing side reactions between water and NCO groups in aqueous PU dispersions;
5. The combination of bismuth and zinc has a synergistic effect, making the formula Make production more flexible, reduce energy consumption, and increase profits;
6. Promote NCO/OH reaction, avoid NCO side reactions, and reduce the generation of CO2;
Packaging: 25KG/barrel, 200/barrel
Organobismuth Catalyst Bismuth environmentally friendly catalyst assembly commonly used in the polyurethane industry, including neodecanoic acid Bismuth, bismuth laurate, bismuth isooctanoate, bismuth naphthenate, etc. Among them, bismuth neodecanoate has the best catalytic effect and its hydrolysis resistance is better than other bismuth salts.
