Process for the synthesis of mixtures of methane diphenyl...

Details Process for the synthesis of mixtures of methane diphenyl... Process for the synthesis of mixtures of methane diphenyl...

2005-08-30

2005-08-30

Davis, Brian (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S332000

Reexamination Certificate

active

06936737

ABSTRACT:
A process for preparing methane diphenyl diamine (MDA) or a mixture of methane diphenyl diamine (MDA) and its higher homologues with a controlled isomer distribution using a silanised zeolite have “shape selectivity”. The mixture contains compounds having the following general formula (I): where R represents a hydrogen atom or a C1to C8(iso) alkyl group, a C4to C10cycloalkyl group or a C6to C12aromatic group and n is a whole number greater than or equal to one so as to give a functionally of 2 to 6.

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