Process for the production of 4, 4'-(phenylene-diisopropyl)-bis(

Details Process for the production of 4, 4'-(phenylene-diisopropyl)-bis( Process for the production of 4, 4'-(phenylene-diisopropyl)-bis(

1994-12-20

1996-01-30

O'Sullivan, Peter

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

Organic compounds

Amino nitrogen containing

C07C20968

Patent

active

054881633

ABSTRACT:
A process for the production of 4,4'-(phenylenediisopropyl)bis(2,6-dialkylanilines) of the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each is a (C.sub.1 -C.sub.4)alkyl group, R.sub.3 is hydrogen or halogen, and the central phenylene function is substituted in the 1,3 or 1,4 position, by reaction of a corresponding diisopropyl benzene with a corresponding aniline in the presence of catalytic amounts of aluminum chloride. The 4,4'-(phenylenediisopropyl)-bis(2,6-dialkylanilines) are used as cross-linking agents for epoxy resins, as chain lengthening agents for polyurethanes, for the production of hydrolysis protective agents for polyurethanes, or for the production of UV stabilizers in varnishes.

REFERENCES:
patent: 3200152 (1965-08-01), Ruppert et al.
patent: 3311660 (1967-03-01), Krimm et al.
patent: 3365347 (1968-01-01), Lund et al.
patent: 3424795 (1969-01-01), Lund et al.
patent: 4374272 (1983-02-01), Yuasa et al.
patent: 4973754 (1990-11-01), Li

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