Aromatic urea-based curing agent system for epoxy resin coating

Details Aromatic urea-based curing agent system for epoxy resin coating Aromatic urea-based curing agent system for epoxy resin coating

1982-12-30

1984-03-13

Nielsen, Earl A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

523400, 523435, 523454, 523456, 5253273, 525504, 528 73, 528 89, 528 92, 528119, 528367, 528368, C08G 5944, C08G 5968

Patent

active

044368909

ABSTRACT:
Single package, thermosetting epoxy resin-based coating compositions are provided which contain a polyepoxide and a curing agent system therefor which comprises an aromatic urea. At composition curing times and temperatures, the aromatic urea reacts with a portion of the polyepoxide to thereby form in situ a primary or secondary amine which can then function as a coreactive curing agent to complete the cure of the epoxy resin coating.

REFERENCES:
patent: 3294749 (1966-12-01), Pratt
patent: 3386956 (1968-06-01), Nawakowski et al.
patent: 3759914 (1973-09-01), Simms et al.
patent: 3945971 (1976-03-01), Harrison et al.
patent: 3956237 (1976-05-01), Doorakian et al.
patent: 3988257 (1976-10-01), Harrison et al.
patent: 4110309 (1978-08-01), Schulze et al.
patent: 4141885 (1979-02-01), Waddill

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