III International Conference

PP-II-4Pt-CATALYSTS FOR POLYADDITION VULCANIZATION OF SILICONEPOLYMERS, EFFECTIVENESS AND ANALYSISAlekseeva E.I., Ruskol I. Yu., Lyamina O.I.FSUE State Research Institute for Chemistry and Technology of Organoelement Compounds“Penta-91” LTD;Russian Chemical Technological University after D.I.Mendeleev;Kurnakov Institute of General and Inorganic Chemistry RAS, Moscow, RussiaE-mail: alexelena3@yandex.ruStability and catalytic activity of complex catalysts was studied with respect to syntheticconditions and technology of preparation. It was showed that activity of Pt complex catalystdepends on ligand structure. In the presence of nitrogen atom in ligand catalyst can be used ascatalyst-auto inhibitor. X-ray fluorescence spectrometry as universal analysis has beenemployed to calculate quantity of Pt in different catalysts of hydrosililation reaction.Stability and catalytic activity of complex catalysts was studied with respect to syntheticconditions and technology of preparation. Real silicone compositions were created usingcomplex catalysts based on Pt so that control of both temperature and rate of polymerizationis achieved over wide range of parameters – from room temperature to 180 o C and fromseveral hours to few seconds, respectively. Hydrosililation reaction catalysts, that are adductsof Pt with polyunsaturated silicon compounds as ligands were synthesized. The generalformula of synthesized compounds is presented by [CH 3 (CH 2 =CH)SiO] 4 (I) or by (II) below:R 1 R 1| |R 2 – Si –O-Si – R 2 (II), where| |R 3 R 3R 1 = R 2 = R 3 =CH=CH 2 ; R 1 = R 2 =CH 3 , R 3 =CH=CH 2 ;R 1 = R 2 = CH=CH 2 , R 3 = CH 3 ;R 1 =R 2 = C 6 H 5 , R 3 =CH=CH 2 ;R 1 = CH 3 , R 2 = C 6 H 5 , R 3 =CH=CH 2Catalytic activity and selectivity of synthesized catalysts was studied during polyadditionreaction under simulated conditions and with variable compositions of mixed elastomers.Catalytic activity of Pt complex catalysts was determined to decrease in the raw:[(CH 3 ) 2 CH 2 =CHSi] 2 O> [CH 3 C 6 H 5 (CH 2 =CHSi] 2 O >166