polyurethane is widely used in various industries in my country. its wear resistance, high strength and other properties make it widely used in the fi…
the golden ox goes away with its head held high and sings loudly, while the jade tiger welcomes the spring and brings blessings. we have entered 2022 …
recently, the spot market atmosphere of the domestic ethylene glycol market has been active, and prices have continued to fluctuate. the average domes…
shanghai qiguang industry and trade co., ltd. shanghai qiguang industry & trade co., ltd. technical indicators catalyst bdma completely packaged, …
group, one of the world’s largest chemical companies, recently announced that its shanghai campus located in shanghai minhang economic and techn…
[hard foam polyether polyol] functionality f. i originally thought that f ≥ 3 would be the authentic hard foam, but this is not the case. it is comple…
chemical company announced: the maintenance of the 600,000 tons/year mdi integrated device in yantai industrial park has been completed and normal pro…
1. what needs to be calculated in the hard foam composite material is whether the ratio of black and white materials (weight ratio) is reasonable. ano…
it was learned from the guangzhou inspection and quarantine bureau that from january to october this year, a total of 4,113 batches of imported hazard…
kinetics of the reaction between hydroxyl compounds and isocyanates -d(-nco)/dt=k0×(-nco)×(-oh) k1 is the forward reaction rate of isocyanate and hydr…
in the preparation process of polyurethane foam, the main role of the catalyst is to adjust the speed of the foaming reaction and gelation reaction to…
in 2016, the global oil price remained at around us$50, and the price of coating raw materials showed a different trend. analyst wang zhishun deeply a…