Advances in amination

Details Advances in amination Advances in amination

2005-05-03

2005-05-03

Teskin, Fred (Department: 1713)

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

Organic compounds

Amino nitrogen containing

C564S503000, C568S944000, C525S333700, C525S338000, C525S339000, C525S374000, C525S384000

Reexamination Certificate

active

06888030

ABSTRACT:
Inclusion of a branched alcohol in the catalytic hydrogenation reaction involving an aliphatic nitro compound dramatically increases the efficiency of the conversion of nitro groups into amino groups. This discovery is of particular value in the production of polyalkyleneamines via nitration of a polyalkene, such as a polybutene, and its subsequent reduction. The polyalkyleneamines so produced are useful as dispersant additives for motor oils and fuels.

REFERENCES:
patent: 3681463 (1972-08-01), Lee
patent: 3739027 (1973-06-01), Gates, Jr.
patent: 5879420 (1999-03-01), Kropp et al.
patent: 6069281 (2000-05-01), Kropp et al.

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