Process for curing butadiene-styrene

Claim 1

THE METHOD OF CURING A FILM FORMING COMPOSITION IN WHICH THE FILM-FORMING MATERIAL CONSISTS ESSENTIALLY OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF: (A) HYDROCARBON COPOLYMER DRYING OIL PREPARED BY THE SODIUM POLYMERIZATION OF BUTADIENE-1,3 AND STYRENE TO YIELD A COMPOSITION COMPOSED ESSENTIALLY OF 75-85% COMBINED BUTADIENE-1,3 AND 25-15% OF COMBINED STYRENE, (B) HYDROCARBON COPOLYMER DRYING OILS AS IN (A) MODIFIED WITH SMALL AMOUNTS OF COMBINED MALEIC ANHYDRIDE, (C) COPOLYMER DRYING OIL AS IN (A) WHICH HAS BEEN BLOWN IN LIQUID CONDITION WITH A STREAM OF OXYGEN-CONTAINING GAS PASSED THERETHROUGH AT LEAST UNTIL A BAKED FILM THEREOF EXHIBITS GREATER HARDNESS THAN THAT OF A SIMILARLY BAKED FILM OF THE SAME OIL WHICH HAS NOT BEEN BLOWN, (D) COPOLYMER DRYING OIL AS IN (B) WHICH HAS BEEN BLOWN IN LIQUID CONDITION WITH A STREAM OF OXYGEN-CONTAINING GAS PASSED THERETHROUGH AT LEAST UNTIL A BAKED FILM THEREOF EXHIBITS GREATER HARDNESS THAN THAT OF A SIMILARLY BAKED FILM OF THE SAME OIL WHICH HAS NOT BEEN BLOWN, SAID PROCESS COMPRISING THE STEPS OF: INCORPORATING IN SAID COATING COMPOSITION, AS THE SOLE CURING CATALYST THEREIN, AN EFFECTIVE AMOUNT UP TO ABOUT 2% BY WEIGHT ON THE DRYING OIL SOLIDS OF AT LEAST ONE CURING CATALYST SELECTED FROM THE GROUP CONSISTING OF ORGANIC PEROXIDES IN AMOUNTS BETWEEN ABOUT 0.5% AND 2% AND FERRIC TRIS 2,4-PENTANEDIONATE, CHROMIUM PENTANEDIONATE AND A,A'' DIPYRIDYL ORTHOPHENANTHROLINE IN SMALL AMOUNTS UP TO 2%, AND THEREAFTER BAKING A FILM OF SAID COATING COMPOSITION AT TEMPERATURES BETWEEN ABOUT 250*F. AND 300*F. UNTIL SAID FILM HAS BEEN CURED.

Claim 2

THE METHOD OF CURING A FILM FORMING COMPOSITION IN WHICH THE FILM-FORMING MATERIAL CONSISTS ESSENTIALLY OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF: (A) HYDROCARBON COPOLYMER DRYING OIL PREPARED BY THE SODIUM POLYMERIZATION OF BUTADIENE-1,3 AND STYRENE TO YIELD A COMPOSITION COMPOSED ESSENTIALLY OF 75-85% COMBINED BUTADIENE-1,3 AND 25-15% OF COMBINED STYRENE, (B) HYDROCARBON COPOLYMER DRYING OILS AS IN (A) MODIFIED WITH SMALL AMOUNTS OF COMBINED MALEIC ANHYDRIDE, (C) COPOLYMER DRYING OIL AS IN (A) WHICH HAS BEEN BLOWN IN LIQUID CONDITION WITH A STREAM OF OXYGEN-CONTAINING GAS PASSED THERETHROUGH AT LEAST UNTIL A BAKED FILM THEREOF EXHIBITS GREATER HARDNESS THAN THAT OF A SIMILARLY BAKED FILM OF THE SAME OIL WHICH HAS NOT BEEN BLOWN, (D) COPOLYMER DRYING OIL AS IN (B) WHICH HAS BEEN BLOWN IN LIQUID CONDITION WITH A STREAM OF OXYGEN-CONTAINING GAS PASSED THERETHROUGH AT LEAST UNTIL A BAKED FILM THEREOF EXHIBITS GREATER HARDNESS THAN THAT OF A SIMILARLY BAKED FILM OF THE SAME OIL WHICH HAS NOT BEEN BLOWN, SAID PROCESS COMPRISING THE STEPS OF: INCORPORATING IN SAID COATING COMPOSITION, AS THE SOLE CURING CATALYST THEREIN, AN EFFECTIVE AMOUNT UP TO ABOUT 2% BY WEIGHT ON THE DRYING OIL SOLIDS OF AT LEAST ONE CURING CATALYST SELECTED FROM THE GROUP CONSISTING OF ORGANIC PEROXIDES IN AMOUNTS BETWEEN ABOUT 0.5% AND 2% AND FERRIC TRIS 2,4-PENTANEDIONATE, CHROMIUM PENTANEDIONATE AND A,A'' DIPYRIDYL ORTHOPHENANTHROLINE IN SMALL AMOUNTS UP TO 2%, AND THEREAFTER BAKING A FILM OF SAID COATING COMPOSITION AT TEMPERATURES BETWEEN ABOUT 250*F. AND 300*F. UNTIL SAID FILM HAS BEEN CURED.