Process for the production of hydantoins

Details Process for the production of hydantoins Process for the production of hydantoins

1982-11-01

1984-08-14

Schwartz, Richard A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

536 23, 544 60, 544 82, 544139, 544296, 544322, 544336, 544357, 544370, 546210, 546256, 546278, 548101, 548110, 548309, 548311, 548313, C07D23378

Patent

active

044658397

ABSTRACT:
The invention relates to a process for the production of compounds containing at least one hydantoin ring by reacting a carbodiimide with derivatives of succinic acid anhydride corresponding to the following general formula: ##STR1## wherein R.sup.4 represents a halogen atom, an alkyl-carboxy or aryl-carboxy group; or with maleic acid anhydride in the presence of aromatic OH-functional compounds at temperatures of from about 20.degree. to about 250.degree. C., optionally in a solvent and optionally in the presence of a catalyst, and also to the use of the polyhydantoins obtained, where they have high molecular weights, as high temperature-resistant coating compositions, films, powders, adhesives, lacquers or mouldings.

REFERENCES:
patent: 3254036 (1966-05-01), Robinson
patent: 4246393 (1981-01-01), Zecher et al.

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