Dibutyltin dilaurate is widely used as a drier for 2KPU.
What you need to know about using dibutyltin dilaurate
1. The tin content of regular products is around 18%. Products lower than this value are adulterated and blended in order to reduce costs. For example, products with a tin content of 9% are sold at a lower price of 6%. Always believe that you get what you pay for. I didn't pay attention to what methods these manufacturers used to reduce the tin content and reduce costs. Recently, I learned that a substance was mixed to reduce the tin content. After further research, I learned that it is a plasticizer, and finally confirmed that it is DOP. After understanding the situation, I felt like my heart was pounding and my forehead was sweating. DOP is now a restricted ingredient. The suppliers of these low-priced dibutyltin dilaurate will not tell users that DOP is added to their products. This information gap will cause endless harm to themselves and others. In fact, it is understandable that these suppliers reduce costs and sell prices to cater to users' low-price needs. However, Zhou Gong suggested that the mixing ingredients should be disclosed, and that non-toxic and harmless mixing options can be chosen (you can consult Zhou Gong). It is completely unnecessary. Use restricted substances DOP.
2. The regular dibutyltin dilaurate product has a freezing point of 16-23°, so in winter, when the temperature is low, it will precipitate into solid matter, and the catalytic effect will be greatly reduced or even have no catalytic effect, and it will also affect the paint and Paint film appearance properties. Tests have shown that if you put dibutyltin dilaurate in the freezer of the refrigerator overnight, it will be in the form of an iron-like solid when you take it out the next day. At this time, if lauric acid is replaced with acetic acid or dibutyltin diacetate, the freezing point will be reduced to 7-10°, and the low-temperature activity will be greatly improved. The one with the best low-temperature activity is SN-25. Its freezing point is more than 20 degrees below zero. It is still a flowing liquid after being placed in the refrigerator freezer overnight. The low-temperature activity is very good.
