Coating compositions containing butyl rubber and process of applying same

Claim 1

ANTICORROSIVE, PROTECTIVE PAINTAINING AND COATING COMPOSITION COMPRISING A SYNTHETIC ELASTOMERIC COPOLYMER OF ISOBUTENE WITH APPROXIMATELY 2 PERCENT OF A DIOLEFINE SELECTED FROM THE GROUP CVONSISTING OF IOSPRENE AND BUTADIENE, A VULCANIZING AGENT CAPABLE OF REACTING WITH SAID ELASTOMERIC COPOLYMER AT ROOM TEMPERATURE, AND A VOLATILE ORGANIC SOLVENT FOR SAID ELASTOMERIC COPOLYMER, THE BOILING RANGE OF SAID SOLVENT BEING BETWEEN ABOUT 140* C. AND ABOUT 200*C., SAID SOLVENT BEING CHEMICALLY INERT AND CAUSING SWELLING AND DISSOLUTION OF SAID ELASTOMERIC COPOLYMER, THE COMPONENTS OF SAID COMPOSITION BEING UNIFORMLY AND HOMOGENEOUSLY DISTRIBUTED THERETHROUGH, SAID COMPOSITION, ON THE ADDITION, WITHIN ABOUT 24 HOURS BEFORE USING THE COMPOSITION AS PAINT, OF AN ACCELERATOR FOR VULCANIZATION OF SAID ELASTOMERIC COPOLYMER, SAID ACCELERATOR ACTING AT ROOM TEMPERATURE, FORMING A SUBSTANTIALLY NON-TACKY, ANTICORROSIVE, PROTECTIVE COATING ON APPLICATION TO SURFACES TO BE PROTECTED, THE ELASTOMERIC COPOLYMER CONTENT OF SAID COMPOSITION BEING BETWEEN ABOUT 2.5% AND ABOUT 25% AND ITS TOTAL SOLID CONTENT BEING BETWEEN ABOUT 30% AND ABOUT 80%.