Trimellitic acid ester and its use in a protective lacquer based

Details Trimellitic acid ester and its use in a protective lacquer based Trimellitic acid ester and its use in a protective lacquer based

1978-12-13

1980-10-07

Nielsen, Earl A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 328EP, 427239, 528110, 528112, 528296, C08G 5942

Patent

active

042267552

ABSTRACT:
The invention relates to a trimellitic anhydride ester mixture which is suitable for lacquers and which is obtained by heating trimellitic anhydride together with a diol, in the molar ratio of 1:1 to 2:1, for at least 4 hours at 190.degree. to 250.degree. C., at an external pressure of 5 or 30 Torr for at least part of this time, and in the absence of a catalyst.
The mixture is used as curing agent for the epoxide resin in a laquer containing epoxide resin and optionally pigments. The lacquer is used for the inside coating of tins (cans) for foodstuffs.

REFERENCES:
patent: 3183248 (1965-05-01), Hirsch et al.
patent: 3269975 (1966-08-01), Lee
patent: 3397254 (1968-08-01), Wynstra et al.
patent: 3639345 (1972-02-01), Whittemore et al.
patent: 4024111 (1977-05-01), Thomas et al.
patent: 4092295 (1978-05-01), Takamoru et al.
Shell, "Epoxy Resin Coating Composition and Process", Chem. Abstracts 61, 8524d (1964).

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