Salts of pyromellitic acid, and their use as epoxy resin curing

Details Salts of pyromellitic acid, and their use as epoxy resin curing Salts of pyromellitic acid, and their use as epoxy resin curing

1996-04-03

1997-03-04

Hamilton, III, Thomas

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525420, 525440, 525504, 525528, 525533, 528 68, 528 73, 528 93, 528114, 528115, 528288, 528289, 528291, 528292, 528297, C08F 2000

Patent

active

056080166

ABSTRACT:
The invention relates to salts of pyromellitic acid which comprise 1 mol of pyromellitic acid and 0.5 to 2 mol of a guanidine of the following composition: ##STR1## in which R, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different radicals from the group consisting of hydrogen, alkyl, cycloalkyl and aromatic hydrocarbon residues having 1 to 8 carbon atoms, and R.sup.1 and R.sup.2 and R.sup.3 and R.sup.4 may form a joint ring which may contain an oxygen atom as heteroatom. Also claimed are the preparation of the salts and their use for matt epoxide and hybrid powder coatings.

REFERENCES:
patent: 5449528 (1995-09-01), Gras et al.
patent: 5494994 (1996-02-01), Gras et al.
patent: 5506334 (1996-04-01), Gras et al.

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