Method for the preparation of platinum complexes

Details Method for the preparation of platinum complexes Method for the preparation of platinum complexes

1993-10-07

1994-05-17

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556136, 556431, 556443, 556465, 528 15, C07F 1900, C07F 1500, C07F 718

Patent

active

053129377

ABSTRACT:
The present invention relates to a method for preparing a platinum-organosiloxane complex which comprises (I) reacting (a) a platinous halide having an average crystal size of less than 2500 Angstroms and (b) an organosiloxane having from 2 to 4 silicon- bonded organic groups having from 2 to 6 carbon atoms and having terminal olefinic unsaturation, the remaining silicon- bonded organic substituents being selected from alkyl groups having from 1 to 6 carbon atoms and phenyl groups, wherein said reaction is carried out in the presence of a polar organic liquid which is at least a partial solvent for platinous halide, and (II) neutralizing the reaction mixture of (I). The complexes of the instant invention are useful as catalysts for hydrosilylation reactions.

REFERENCES:
patent: 2823218 (1958-02-01), Speier
patent: 3419593 (1968-12-01), Willing
patent: 3474123 (1969-10-01), Kelly et al.
patent: 3775452 (1973-11-01), Karstedt
patent: 4647679 (1987-03-01), Panster et al.
patent: 5087712 (1992-02-01), Volchenskova et al.
patent: 5175325 (1992-12-01), Brown et al.
patent: 5185458 (1993-02-01), Huggins

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