Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-08-27
1978-07-04
Pertilla, Theodore E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
220 1BC, 220470, 260 294UA, 428460, C08L 6110, C08L 6128
Patent
active
040987450
ABSTRACT:
Water-borne or aqueous coating compositions which are especially suitable for use as bondable base coats and size coats in three piece, tin-free steel beverage containers comprise blends of an aqueous dispersion of an amine solubilized interpolymer with aldehyde condensation resins. The interpolymer is prepared in the absence of mercaptans, external surfactants and external dispersion stabilizers and is formed from substituted carboxylic acid amide units; ethylenically unsaturated acid units; hardening units from monomers such as styrene, vinyl toluene or alkyl methacrylate having from 1 to 4 carbon atoms and flexibilizing units from certain alkyl acrylates or methacrylates. The interpolymers are solubilized by neutralizing or partially neutralizing the acid units of the interpolymer with monomeric amines. Aldehyde condensation resins, such as phenol aldehyde resins, aminoplast resins or mixtures thereof are especially desirable. These compositions provide three piece beverage containers with cured base coats and size coats which exhibit excellent adhesion to both the tin-free steel metal and the adhesive employed in forming the container. In addition, the cured base coats and size coats formed from these compositions do not impart undesirable turbidity or taste characteristics to beverages packaged therein.
REFERENCES:
patent: 2819237 (1958-01-01), Daniel, Jr.
patent: 3014886 (1961-12-01), Harding
patent: 3037963 (1962-06-01), Christenson
patent: 3347700 (1967-10-01), Gloyer et al.
patent: 3658795 (1972-04-01), Daimer
patent: 3761432 (1973-09-01), Fritsche
patent: 3991216 (1976-11-01), Christenson et al.
Pertilla Theodore E.
PPG Industries Inc.
Troy Frank J.
Wilson Charles R.
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