Biocidal elastomeric compositions

Abstract

Abstract A VULCANIZED ELASTOMERIC COMPOSITION COMPRISING AN ORGANIC ELASTOMER, AN ORGANIC TOXICANT DISSOLVED THEREIN, AND SELECTED PROPORTIONS OF COMPOUNDING INGREGIENTS INCLUDING CARBON BLACK, WAX, FILLERS, ETC,. AND VULCANIZED TO AN INTERMEDIATE DEGREE ARE BIOCIDAL MATERIALS HAVING A LOW, CONTROLLED AND TAILOR-MADE RATE OF TOXICANT RELEASE FOR LONG-EXTENDED BIOCIDAL ACTIVITY. ORGANIC ELASTOMERS EMPLOYED ARE NATURAL RUBBER, NEOPRENE, NITRILE RUBBERS, BUTYL, SBR, POLYBUTADIENE, ETC. ORGANIC TOXICANTS APPRECIABLY SOLUBLE IN SUCH ELASTOMERIC COMPOSITION FOR SUCH USE INCLUDE THE ORGANO-TIN COMPOUNDS, NITROSALICYLANILIDE COMPOUNDS, CHLORINATED HYDROCARBONS, ORGANO-PHOSPHOROUS COMPOUNDS, ETC. SUCH COMPOSITIONS ARE USEFUL IN SHEET-LIKE COVERINGS THICKER THAN ABOUT 0.05 INCH FOR ANTIFOULING PROTECTION OF SUBMERGED MARINE STRUCTURES; AS LARVACIDES IN THE FORM OF PELLETS, CHUNKS, SHEETS, STRIPS, TAPES, ETC., WHICH ON IMMERSION IN INFESTED WATER OR AIR LIBERATE TOXICANT KILLING THE ADULT, LARVAE AND EGG FORMS OF MOSQUITOS, MIDGES, BLACK FLIES, SCHISTOSOME CERCARIAE AND THEIR SNAIL HOSTS, OTHER GASTROPODS, AND AND OTHER DISEASE-CAUSING AND/OR DISEASE TRANSMITTING ORGANISMS AND INSECT PESTS; AS BACTERIOCIDAL, FUNGICIDAL AND ALGICIDAL SURFACES AND COVERINGS; AND AN ANIMAL- AND INSECT-REPELLANTS. CERTAIN INGREDIENTS OF ELASTOMER AND VULCANIZABLE RUBBER COMPOSITIONS, NOTABLY FATTY ACID MATERIALS, VERY MATERIALLY ENHANCE BIOCIDAL EFFICIENCY OF COMPOSITIONS CONTAINING THE ORGANO-TIN COMPOUNDS.

Inventors

• 👤 Nathan F Cardarelli
• 👤 Harry F Neff

Bibliographic Details