Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1978-03-14
1979-08-14
Person, Sandra M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 37EP, C08K 523
Patent
active
041644921
ABSTRACT:
Disclosed is a novel method for determining the degree of cure of polyester and epoxy resins which includes the steps of adding a catalyst, containing a pigment, to the resin; mixing the two components to provide a visually uniform distribution of the catalyst and pigment throughout the resin; and, depositing the mixture in a desired position for curing. The pigment can also be added directly to the resin rather than the catalyst. Additionally, in either alternative, at the completion of the curing the color imparted by the pigment has substantially disappeared from the cured product as though no pigment had been employed. Also disclosed is a novel benzoyl peroxide paste composition, for curing polyester resins, having a pigment the color of which substantially disappears from the cured product.
REFERENCES:
patent: 3030329 (1962-04-01), Warnsdorfer
patent: 3181991 (1965-05-01), Leneskis
patent: 3390121 (1968-06-01), Burford et al.
patent: 4069191 (1978-01-01), Post
Alco Standard Corporation
Person Sandra M.
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