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On the afternoon of December 16, 2021, the “Shanghai Polyurethane Industry Association Polyurethane Industry Association Additives Professional …
In the process of polyurethane foam preparation, the role of catalysts is mainly to regulate the speed of foaming and gelation reactions to make them …
Polyurethane delay catalysts are an extremely special class of polyurethane catalysts that provide the catalytic activity required for polyurethane ma…
Polyurethane used in the textile industry According to the information from the Polyurethane Division of the American Society of Plastics Industry, th…
Preface Two-component polyurethane adhesives are usually composed of an isocyanate component (curing agent) containing NCO and a hydroxyl component (m…
1、Polyether As the main raw material, polyether reacts with isocyanate to produce carbamate, which is the skeleton reaction of foam products. In the c…
In the process of foaming, if the hard foam is not hard enough, how to improve the hardness? In this regard, I have collected some solutions for your …
1. What is sprayed rigid polyurethane? Sprayed rigid polyurethane is a new type of waterproof and thermal insulation material made of polymer by mixin…
1. What is sprayed rigid polyurethane? Sprayed rigid polyurethane is a new type of waterproof and thermal insulation material made of polymer by mixin…
At the beginning of the new year, following the visit of Lu Yin, Director of New Materials Division of Shanghai Municipal Commission of Economic and I…
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…
Kinetics of the reaction of hydroxyl compounds with isocyanates – d(-NCO)/dt = K0 × (-NCO) × (-OH) K1 is the forward reaction rate for the compl…
