Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1997-07-23
1999-01-12
Bell, Mark L.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
502165, 502166, 502168, 556 17, 556 45, 556110, 556136, 556138, B01J 3100, C07F 1300, C07F 1500, C07F 722
Patent
active
058589058
ABSTRACT:
Catalyst systems which comprise a transition metal and a pyrophosphite ligand are particularly effective as catalysts for hydrosilation reactions. The transition metal is from groups 7-11 of the Periodic Table, and the pyrophosphite has the following formula: ##STR1## wherein E and E' are independently a direct bond, --S--, --Se--, or --CR.sub.9 R.sub.10 -- where R.sub.9 and R.sub.10 are independently hydrogen or alkyl of 1-18 carbon atoms, and R.sub.10 can also be phenyl. R is H or methyl, R.sub.1-8 are independently H, C.sub.1-18 alkyl, C.sub.5-12 cycloalkyl, or C.sub.7-15 phenylalkyl.
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Pastor Stephen D.
Smith Andrea R.
Bell Mark L.
Ciba Specialty Chemicals Corporation
Hall Luther A. R.
Levine Jacob M.
Pasterczyk J.
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