Polyurethane CatalystA-1 is mainly used for the production of soft polyether polyurethane foam, and can also be used for rigid foam for packaging. A-1 has a particularly strong catalytic effect on water, so it can reduce the foam density. It is about 80% effective at controlling gas-producing reactions and about 20% at controlling gel reactions. The catalyst has high activity and low dosage. By adjusting the dosage of this series, the foaming rise and gel time can be controlled. A-1 is shared with organotin catalyst, which can significantly improve the production tolerance of foam plastics, ensuring that unnecessary quality problems will not be caused by careless operation or small errors in the metering system during production, and high-quality soft plastics can be produced. Styrofoam.
Polyurethane Catalyst A-1 is widely used in various formulations for manufacturing polyurethane foam, and is especially suitable for the production of high resilience, semi-rigid foam and low-density foam.
Amine catalysts
Amine catalysts are generally used in the production of polyurethane foams and are mainly divided into the following categories:
Aliphatic amine catalysts include N,N-dimethylcyclohexylamine, bis(2-dimethylaminoethyl) ether, N,N,N’,N’-tetramethylalkylenediamine, triethylamine, N,N- Dimethylbenzylamine, etc.
Alicyclic amine catalysts include solid amines, N-ethylmorpholine, N-methylmorpholine, N,N‘-diethylpiperazine, etc.
Alcohol compound catalysts include triethanolamine, DMEA, etc.
Aromatic amines include pyridine, N,N’-dimethylpyridine, etc.
Organometallic catalysts
In polyurethane catalysts, elastomers and formulations of adhesives, coatings, sealants, waterproof coatings, paving materials, etc., dibutyltin dilaurate Organometallic catalysts such as (DY-12) are the most commonly used. They are very effective in promoting the reaction between isocyanate groups and hydroxyl groups, but they also have a certain acceleration effect on the reaction between water and isocyanate in formulas with moisture; they can be used in formulas such as plastic runways. Special catalysts such as organic lead.
Organometallic compounds include carboxylates, metal alkyl compounds, etc. The metal elements contained mainly include tin, potassium, lead, mercury, zinc, etc. The most commonly used are organotin compounds.
