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US 4,066,598 AGranted
Zinc enriched lithium silicate-latex coating composition
AssigneeMatcote Company, Inc.
InventorsRonald W. Beers, Julian Lakritz
Life of this patent
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Abstract
A zinc-enriched protective coating comprises a vehicle containing an alkali-lithium silicate solution with sufficient alkali silicate, preferably lithium, to provide a self-curing one-coat composition, an organic interpolymer latex to provide improved adhesion, and zinc dust to provide cathodic protection.
Claims7
A homogeneous vehicle for a zinc-enriched, self-curing, water-resistant coating composition consisting essentially of:
- a. between about 57 to 91 parts of an aqueous alkali-lithium silicate solution, said alkali and lithium silicates being employed in amounts sufficient to provide a molar ratio of X.sub.2 O, where X is selected from the group consisting of sodium, potassium, and quaternary ammonium, to lithium oxide to silicon dioxide, respectively, within the range from about 0.25 to 0.65 X.sub.2 O :
- 0.35 to 0.75 Li.sub.2 O :
- 2.5 to 4.5 SiO.sub.2 ;
- b. between 9 and 40 parts of a film-forming organic alkali stable latex of an interpolymer selected from the group consisting of interpolymers of acrylonitrile/butadiene/styrene, of styrene/butadiene/maleic acid, of styrene/butadiene/itaconic acid and of styrene/butadiene;
- and
- c. between 0 and 3 parts of an alkali stable anionic surfactant.
3 more elements
A homogeneous vehicle for a zinc-enriched, self-curing, water-resistant coating composition consisting essentially of:
- a. between about 57 to 91 parts of an aqueous sodium-lithium silicate solution, said sodium and lithium silicates being employed in amounts sufficient to provide a molar ratio of sodium oxide (Na.sub.2 O) to lithium oxide (Li.sub.2 O) to silicon dioxide, repsectively, within the range from about 0.25 to 0.65 Na.sub.2 O :
- 0.35 to 0.75 Li.sub.2 O :
- 2.5 to 4.5 SiO.sub.2 ;
- b. between 9 and 40 parts a of film-forming organic alkali stable latex of an interpolymer of styrene/butadiene/itaconic acid;
- and
- c. between 0 and 3 parts of an alkali stable anionic surfactant.
3 more elements
Dependencies are inferred from the claim text.