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Do you know the organotin catalyst? Do you know how the catalyst works?
Edit:Nantong Yutai Chemical Products Co., Ltd.   UpDate:2019-10-11

Do you know "Do you know the organotin catalyst? Do you understand how the catalyst works?" Today, Changzhou Kerry Chemical Technology Co., Ltd. wants to introduce to you this content. I hope that through the introduction of this article, you can have a certain understanding and understanding of the working principle of the catalyst, etc. Take a look at the related introduction: The organotin catalyst is a metal organic compound formed by the direct connection between tin and carbon. The formula RnSnX4- ( n=1-4 , R is an alkyl group or an aromatic group). There are two types of alkyl tin compounds and aromatic compounds. It is fundamentally constructed with an alternative, two alternatives, three substitutes and four substitutes (referring to the number of R ). 10-20% of the tin production value is used to form an organotin compound.

Organotin catalysts are commonly used in the production of polyurethanes and the like, especially in polyurethane foams, coatings, elastomers, adhesives, resins, and the like. Because the effect of steric hindrance on catalytic activity decreases with increasing temperature, replacing the group with smaller steric hindrance with a more sterically hindered alkyl group can make the organotin compound have higher stability, hydrolysis resistance and Delaying the catalytic activity, for example by replacing dibutyltin with dioctyltin, can delay the catalysis. The use of dialkyltin dimaleate or alkyl tin dithiolate in place of dibutyltin dilaurate can improve hydrolytic stability. Tin thiolates containing large alkyl groups have high stability and delayed catalysis of two utility catalysts. Do you know organotin catalysts such as dioctyltin thiolate.

The catalyst can change the chemical reaction speed. The chemical composition, chemical properties and quantity of the catalyst before and after the reaction are called catalysts . The positive catalyst can accelerate the reaction speed, and the negative catalyst (resist inhibitor ) can slow down the reaction speed .

Catalytic reverberation has the reaction of catalyst participation . If the catalyst and the reaction are in the same gas phase or liquid phase, it is called homogeneous catalysis . If the catalyst and the reaction are not in the same phase, and the reaction is only at the interface between the catalyst and the reaction. Conduction is called heterogeneous catalysis . There is also a type of catalytic reaction called biocatalysis, or enzyme catalysis, which is different from homogeneous catalysis and heterogeneous catalysis, but has some characteristics of both .

The points mentioned above are related to "Do you know the organotin catalyst? Do you understand the working principle of the catalyst?" I believe that after reading the introduction of this article, I will have some understanding of this aspect, and I will understand the catalyst for you in the future. The working principle and other issues can also be solved very well. Here, we recommend that you learn more about testing long tail words, high activity tin catalysts, etc., I hope to help you!


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