Novel tin (IV) compounds

Details Novel tin (IV) compounds Novel tin (IV) compounds

1989-04-21

1991-09-24

Prescott, Arthur C.

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

Organic compounds

Heavy metal containing

556 87, C07F 722

Patent

active

050515217

ABSTRACT:
Novel tetracoordinated tin (IV) compounds, well suited as latent catalysts for the preparation of polyurethanes or for the crosslinking of curable diorganopolysiloxanes (upon thermal decomposition thereof into diorganotin dicarboxylates or dialcoholates), have the general formula (1): ##STR1## in which the radicals R, which may be the same or different, are each a linear or branched chain C.sub.1 -C.sub.20 alkyl radical, a mononuclear aryl radical, or an aralkyl or alkaryl radical, the alkyl moieties of which having from 1 to 6 carbon atoms; the radicals R.sub.1 and R.sub.2, which may be the same or different, are each a hydrogen atom, a cyano radical, a C.sub.1 -C.sub.6 alkyl radical, or an alkoxycarbonyl radical, the alkyl moiety of which having from 1 to 6 carbon atoms, with the proviso that R.sub.1 and R.sub.2 may together form a saturated hydrocarbon ring member having from 5 to 8 carbon atoms; the radical R.sub.3 is a hydrogen atom, a linear or branched chain C.sub.1 -C.sub.20 alkyl radical, a linear or branched chain C.sub.1 -C.sub.20 alkoxy radical, a mononuclear aryl radical or a mononuclear aryloxy radical; and a is 0 or 1.

REFERENCES:
patent: 3206489 (1965-09-01), Stamm et al.
patent: 3806530 (1974-04-01), Dorfelt et al.
patent: 4390640 (1983-06-01), Rasshofer et al.
patent: 4546109 (1985-10-01), Hubele et al.
patent: 4795820 (1989-01-01), Synoradzki et al.

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