Triethylamine-based catalysts for the melt polymerization of carbonate monomers

Triethylamine hydrochloride and triethylamine catalyze the melt polymerization of carbonate monomers faster than stannous octoate.

Implementation of Differential Scanning Calorimetry when Studying Polymerization of Compounds Based on Glycolic Acid Ether

Using differential scanning calorimetry and synchronous thermal analysis under dynamic conditions, kinetic regularities of copolymerization of α- glycolide and a mixture of α-β-glycolidewith D,L-lactide in the presence of stannous octoate as a catalyst have been investigated. Some thermodynamic and kinetic parameters of cationic copolymerization of monomers have been determined.

Study on Polyurethane Foam Insulation Materials

The foaming reaction so that all water-gel reaction and foaming reaction to reach equilibrium, the excellent thermal insulation material was prepared by the regulation of the catalyst, a nucleating agent and an isocyanate. By experiment we know that the amount of stannous octoate catalyst 6%, 4% of the amount of nucleating agent CaCO3, and the case of 100% of the amount of isocyanate, the density of the foam material and the mechanical properties of the insulation material to achieve the best value.

Preparation of Bio-Degradable Polyurethane Foams from Liquefied Wheat Straw

Bio-degradable polyurethane foams were prepared from the liquefied wheat straw alcohol by a reaction with isocyanate in the presence of stannous octoate, triethylene diamine and silicone oil. The influences of the catalyst, water, silicone oil, isocyanate index(IN) on the performance of the properties of the foams obtained were investigated. Furthermore, the chemical structures, thermal performance and degradation performance of the products were analyzed.