Catalysts for isocyanate polyaddition reactions

Details Catalysts for isocyanate polyaddition reactions Catalysts for isocyanate polyaddition reactions

1977-01-07

1978-09-19

Gantz, Delbert E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252431N, 528 52, 521124, 521125, 521126, 521127, 521128, B01J 3112, C08G 1800

Patent

active

041153200

ABSTRACT:
This invention relates to new catalyst combinations having improved catalytic activity for isocyanate polyaddition reactions. The catalysts are combinations of known metal catalysts with aromatic compounds which contain at least one nitrogen atom as a hetero atom and have at least one primary amino group in the ortho- or para-position to the hetero atom. Preferred aromatic compounds include ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which may be the same or different, each represent a hydrogen atom, an aliphatic hydrocarbon group having from 1 to 6 carbon atoms or an aromatic hydrocarbon group having from 6 to 12 carbon atoms or two of the groups R.sub.1 to R.sub.4 represent a condensed aromatic ring.

REFERENCES:
patent: 3565875 (1971-02-01), Bozik et al.
patent: 3635906 (1972-01-01), Jayawat
patent: 3668146 (1972-06-01), Ruhle
patent: 3769244 (1973-10-01), Hashimoto et al.
patent: 3814707 (1974-06-01), Moller et al.
patent: 3899443 (1975-08-01), Reymore, Jr. et al.
patent: 4006124 (1977-02-01), Welte et al.

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