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Organotin compounds are organometallic compounds formed by the direct combination of organotin catalysts and carbon.
Edit:Nantong Yutai Chemical Products Co., Ltd.   UpDate:2019-05-30

Dibutyltin dilaurate is also a heat stabilizer, mainly used in the processing of PVC soft-transparent products, silicone rubber catalysts, polyacrylamide and photothermal stabilizers for phenolic resins.

2) Stannous octoate

A catalyst for the production of basic catalysts for polyurethane foams, room temperature curing silicone rubbers, polyurethane rubbers, polyurethane coatings.

The chemical properties are extremely unstable and highly susceptible to oxidation. Stannous octoate is an abbreviation for 2:1 ethyl stannous hexanoate. 2-Ethyl acid is reacted with sodium hydroxide to form 2-ethyl B. Sodium 1 is then prepared by metathesis reaction with stannous chloride in an inert solvent, and a small amount of antioxidant -264 is added to the reaction pot to increase the tin content and stability of 2-ethylhexanoic acid.

Stannous octoate is soluble in polyols and most organic solvents, insoluble in alcohols and water. Stannous octoate can be stored for 12 months, but must be sealed and stored in a dry place. Stannous octoate is non-toxic and corrosive and can be used in the manufacture of medical supplies.

3) Di(dodecylsulfide) dibutyltin

Strong gel catalyst with good hydrolytic stability, catalytic activity is more stable than dibutyltin dilaurate, used for micro-controlling elastomers and rigid foams.

4) Dibutyltin diacetate

Gel catalyst, mainly used as room temperature silicone rubber curing catalyst, especially for deacetic acid type silicone products; characterized by faster catalytic speed than dibutyltin dilaurate, can be used for polyurethane elastomer, sprayed rigid polyurethane foam , hard foam high rebound molding foam, etc.

2. Other organotin catalysts

Because the effect of steric hindrance on catalytic activity decreases with increasing temperature, replacing the sterically hindered group with a higher sterically hindered alkyl group can make organotin compounds have higher stability, hydrolysis resistance, and Delaying the catalytic activity, for example by replacing dibutyltin with dioctyltin, can delay the catalysis. Hydrolysis stability can be improved by using dialkyltin dimaleate or alkyltin dithiolate in place of dibutyltin dilaurate. The tin thiolate containing a large alkyl group has two functions of high stability and delayed catalysis, such as dioctyltin thiolate.

3. Diluting solvent for organotin catalyst

There are many kinds of solvents for diluting organotin catalysts, such as esters, ketones, and benzenes. Commonly used are polyether, ethyl acetate, ethylene glycol, diethylene glycol, or PPG and T9 mixed in a certain ratio. The laboratory is usually diluted with DPG.


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