rigid foam leveling agent (hereinafter referred to as “silicone oil”) model selection and dosage definition is of great importance, it is …

in the future, we will try to explore less isocyanates, after all, not in our grassroots class can control the scope. more about polyether (ester) pol…

first, the most important thing to calculate in the hard foam combination is the ratio of black and white materials (weight ratio) is reasonable, anot…

recently, we often receive calls from peers from all over the country asking about various technical problems that occur during the production of slow…

save money times, the price point of polyether continues to climb. it is fortunate to witness more than ten years of rigid foam products from profitee…

i. water proportioning water: amine: silicone oil = 100: 7: 35 amine is a-33 or a38 imports of domestic can be. silicone oil can be imported l-580, or…

sponges, a porous material, have good water absorption and can be used to clean items. people commonly use sponges made from wood cellulose fibers or …

silicone oil usually refers to the linear polysiloxane that remains liquid at room temperature, and is a class of silicone products with a wide range …

program description catalysis is the study of chemical reactions in which the energy barrier and rate are affected by other substances. usually in het…

industrial catalysts catalysts occupy an extremely important position in the modern chemical industry, with about 90% or more of chemical production p…

1, hydroxyl value: 1 gram of polymer polyol contains the amount of hydroxyl (-oh) equivalent to the number of milligrams of koh, unit mgkoh/g. 2、equiv…