METHOD OF PRODUCING CATALYST FOR CURING ORGANOSILICON POLYMER COMPOSITIONS Russian patent published in 2012 - IPC B01J37/04 C08G77/08 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical engineering for producing catalysts for curing organosilicon compositions. Disclosed is a method of producing a catalyst for curing organosilicon polymer compositions, involving reaction of chloroplatinic acid with unsaturated organosilicon compounds in a solvent medium followed by heating, addition of sodium bicarbonate, filtration of the reaction products and removal of volatile compounds, wherein the unsaturated organosilicon compound used is a mixture of halosilanes of general formula: CH₂=CH-SiR¹R² X, where radicals R¹=CH₃; C₂H₅; C₂H₃; C₃H₅; C₃H₇; C₄H₉; C₆H₅; R=CH₃; C₂H₅; C₂H₃; C₃H₅; C₃H₇; C₄H₉; C₆H₅; C₆H₁₁; X=Cl; Br, and the solvent used is a mixture of ethanol, isopropanol and toluene taken in ratio 20:5:14 respectively. Use of the mixture of halosilanes of different structure in catalyst synthesis enables to control activity, stability and selectivity of the obtained catalysts in a wide range.

EFFECT: obtained catalyst contains Pt(0) and does not contain ionic impurities which are removed during the purification process.

1 cl, 3 ex