Inorganic coating compositions and a method

Claim 2

A COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSION OF

Claim 3

A PAPER COATING COMPOSITION OF A PIGMENT, STARCH AND A LATENT WATER INSOLUBILIZER FOR SAID STARCH, SAID LATENT WATER INORGANIC SOLID PARTICULATE MATERIAL IN AN AQUEOUS SOLUTION THE SOLUTE OF WHICH CONSISTS ESSENTIALLY OF A COMBINATION OF INORINSOLUBILIZER BEING THE REACTION PRODUCT OF FROM 0.5 TO 0.75 MOLE OF UREA PER MOLE OF GLYOXAL AND HAVING AN AVERAGE MOLECGANIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF PHOSPHORETIC ACID, CHROMIC ACID, MOLYBDIC ACID AND THE METAL SALTS ULAR WEIGHT OF FROM 250 TO 325, AND BEING PRESENT IN SAID COMPOSITION AT A CONCENTRATION OF FROM 2 TO 10 PERCENT BY OF SAID ACIDS, THE COMBINATION OF COMPOUNDS IN SAID SOLUTION BEING SUCH AS WILL PROVIDE AT LEAST 1 MOL PER LITER DISSOLVED WEIGHT BASED ON THE WEIGHT OF THE STARCH. PHOSPHATE, AT LEAST 0.3 MOL PER LITER DISSOLVED MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMATE AND MOLYBDATE AND AT LEAST 0.5 MOL PER LITER DISSOLVED METAL, SAID SOLID PARTIC ULATE MATERIAL BEING PRESENT IN AN AMOUNT OF FROM ABOUT 10 TO 2000 GRAMS PER LITER OF SAID SOLUTION, AT LEAST ABOUT 1% BY WEIGHT OF SAID SOLID PARTICULATE MATERIAL BEING AN ALLOY CONTAINING AT LEAST ABOUT 3% BY WEIGHT ALUMINUM AND AT LEAST ABOUT 0.5% BY WEIGHT MAGNESIUM, AND AT LEAST ABOUT 0.5% OF THE TOTAL WEIGHT OF SAID SOLID PARTICULATE MATERIAL BEING MAGNESIUM ALLOYED WITH ALUMINUM, THE ALUMINUM AND MAGNESIUM CONSTITUTING MORE THAN 50% BY WEIGHT OF SAID ALLOY, SAID COMPOSITION BEING HEAT CURABLE UPON DRYING THEREOF TO A SUBSTANTIALLY WATER INSOLUBLE MATERIAL WITH SAID SOLID PARTICULATE MATERIAL BEING BONDED THEREIN.

Claim 4

A PAPER COATING COMPOSITION OF A PIGMENT, STARCH AND A LATENT WATER INSOLUBILIZER FOR SAID STARCH, SAID LATENT WATER INORGANIC SOLID PARTICULATE MATERIAL IN AN AQUEOUS SOLUTION THE SOLUTE OF WHICH CONSISTS ESSENTIALLY OF A COMBINATION OF INORINSOLUBILIZER BEING THE REACTION PRODUCT OF FROM 0.5 TO 0.75 MOLE OF UREA PER MOLE OF GLYOXAL AND HAVING AN AVERAGE MOLECGANIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF PHOSPHORETIC ACID, CHROMIC ACID, MOLYBDIC ACID AND THE METAL SALTS ULAR WEIGHT OF FROM 250 TO 325, AND BEING PRESENT IN SAID COMPOSITION AT A CONCENTRATION OF FROM 2 TO 10 PERCENT BY OF SAID ACIDS, THE COMBINATION OF COMPOUNDS IN SAID SOLUTION BEING SUCH AS WILL PROVIDE AT LEAST 1 MOL PER LITER DISSOLVED WEIGHT BASED ON THE WEIGHT OF THE STARCH. PHOSPHATE, AT LEAST 0.3 MOL PER LITER DISSOLVED MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMATE AND MOLYBDATE AND AT LEAST 0.5 MOL PER LITER DISSOLVED METAL, SAID SOLID PARTIC ULATE MATERIAL BEING PRESENT IN AN AMOUNT OF FROM ABOUT 10 TO 2000 GRAMS PER LITER OF SAID SOLUTION, AT LEAST ABOUT 1% BY WEIGHT OF SAID SOLID PARTICULATE MATERIAL BEING AN ALLOY CONTAINING AT LEAST ABOUT 3% BY WEIGHT ALUMINUM AND AT LEAST ABOUT 0.5% BY WEIGHT MAGNESIUM, AND AT LEAST ABOUT 0.5% OF THE TOTAL WEIGHT OF SAID SOLID PARTICULATE MATERIAL BEING MAGNESIUM ALLOYED WITH ALUMINUM, THE ALUMINUM AND MAGNESIUM CONSTITUTING MORE THAN 50% BY WEIGHT OF SAID ALLOY, SAID COMPOSITION BEING HEAT CURABLE UPON DRYING THEREOF TO A SUBSTANTIALLY WATER INSOLUBLE MATERIAL WITH SAID SOLID PARTICULATE MATERIAL BEING BONDED THEREIN.

Claim 5

A composition as set forth in claim 1, wherein said alloy consists essentially of from about 30% to 70% by weight aluminum and the remainder magnesium.

Claim 6

A composition as set forth in claim 1, wherein said alloy is about 70% by weight aluminum and about 30% by weight magnesium.

Claim 7

A composition as set forth in claim 1, wherein a portion of said solid particulate material is metal powder other than said alloy.

Claim 8

A composition as set forth in claim 1, wherein a portion of said solid particulate material is aluminum powder.

Claim 9

A composition as set forth in claim 1, wherein sAid solid particulate material is present in an amount of from about 250 to 1000 grams per liter of said solution and at least 50% by weight of said solid particulate material is aluminum.

Claim 10

A composition as set forth in claim 1, wherein the combination of inorganic compounds in said solution is such as to provide about from 1 to 4 mols per liter dissolved phosphate, from 0.5 to 3 mols per liter dissolved material from the group consisting of chromate and molybdate and from 1 to 4 mols per liter dissolved metal.

Claim 11

A composition as set forth in clalim 1, wherein the metal in said solution is predominantly magnesium.

Claim 12

A composition as set forth in clalim 1, wherein the metal in said solution is predominantly magnesium.

Claim 13

A composition as set forth in claim 1, wherein said solid particulate material has a grain size not exceeding about 325 mesh.

Claim 16

A method as set forth in claim 10, wherein a portion of the powder in said composition is aluminum powder.

Claim 17

AN ARTICLE OF MANUFACTURE COMPRISING A SOLID SUBSTRATE HAVING DEPOSITED THEREON A LAYER FORMED BY DRYING AND HEAT CURING TO WATER INSOLUBILITY A COATING CONSISTING ESSENTIALLY OF A MIXTURE OF POWDER IN AN AQUEOUS SOLUTION THE SOLUTE OF WHICH CONSISTS ESSENTIALLY OF A COMBINATION OF INORGANIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, CHROMIC ACID, MOLYBDIC ACID AND THE METAL SALTS OF SAID ACIDS, THE COMBINATION OF COMPOUNDS IN SAID SOLUTION BEING SUCH AS WILL PROVIDE AT LEAST 1 MOL PER LITER DISSOLVED PHOSPHATE, AT LEAST 0.3 MOL PER LITER DISSOLVED MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMATE AND MOLYBDATE, AND AT LEAST 0.5 MOL PER LITER DISSOLVED METAL, AT LEAST ABOUT 1% BY WEIGHT OF SAID POWDER BEING AN ALLOY CONTAINING AT LEAST ABOUT 3% BY WEIGHT ALUMINUM AND AT LEAST ABOUT 0.5% BY WEIGHT MAGNESIUM, AND AT LEAST ABOUT 0.5% OF THE TOTAL WEIGHT OF SAID POWDER BEING MAGNESIUM ALLOYED WITH ALUMINUM, THE ALUMINUM AND MAGNE SIUM CONSTITUTING MORE THAN 50% BY WEIGHT OF SAID ALLOY SAID POWDER BEING PRESENT IN SAID SOLUTION IN AN AMOUNT OF ABOUT 250 TO 1000 GRAMS PER LITER OF SAID SOLUTION AND BEING BONDED IN SAID LAYER AFTER CURING THEREOF.

Claim 18

AN ARTICLE OF MANUFACTURE COMPRISING A SOLID SUBSTRATE HAVING DEPOSITED THEREON A LAYER FORMED BY DRYING AND HEAT CURING TO WATER INSOLUBILITY A COATING CONSISTING ESSENTIALLY OF A MIXTURE OF POWDER IN AN AQUEOUS SOLUTION THE SOLUTE OF WHICH CONSISTS ESSENTIALLY OF A COMBINATION OF INORGANIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, CHROMIC ACID, MOLYBDIC ACID AND THE METAL SALTS OF SAID ACIDS, THE COMBINATION OF COMPOUNDS IN SAID SOLUTION BEING SUCH AS WILL PROVIDE AT LEAST 1 MOL PER LITER DISSOLVED PHOSPHATE, AT LEAST 0.3 MOL PER LITER DISSOLVED MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMATE AND MOLYBDATE, AND AT LEAST 0.5 MOL PER LITER DISSOLVED METAL, AT LEAST ABOUT 1% BY WEIGHT OF SAID POWDER BEING AN ALLOY CONTAINING AT LEAST ABOUT 3% BY WEIGHT ALUMINUM AND AT LEAST ABOUT 0.5% BY WEIGHT MAGNESIUM, AND AT LEAST ABOUT 0.5% OF THE TOTAL WEIGHT OF SAID POWDER BEING MAGNESIUM ALLOYED WITH ALUMINUM, THE ALUMINUM AND MAGNE SIUM CONSTITUTING MORE THAN 50% BY WEIGHT OF SAID ALLOY SAID POWDER BEING PRESENT IN SAID SOLUTION IN AN AMOUNT OF ABOUT 250 TO 1000 GRAMS PER LITER OF SAID SOLUTION AND BEING BONDED IN SAID LAYER AFTER CURING THEREOF.

Claim 19

An article as set forth in claim 12, wherein said alloy contains from about 30% to 70% by weight aluminum and from about 30% to 70% by weight magnesium.

Claim 20

An article as set forth in claim 12, wherein at least a portion of the powder in said coating is aluminum powder.

Claim 21

An article as set forth in claim 12, wherein of the total powder in said coating at least 5% by weight thereof is said alloy.