Abstract: An apparatus and method for the elimination of marine fouling of marine mechanisms such as underwater fluid distribution emission systems. A grommet nozzle made of plastic materials containing an antifoulant and having a capability of easy installation forms a basic part of the apparatus. The grommet nozzle of the invention is formed of a polymer or a mixture of polymers containing a material toxic to calcareous marine organisms and capable of release of the toxic material into the environment at such a rate that the marine organisms grow extremely slow, yet the release rate is not sufficiently fast to be a toxic hazard to the surrounding environment.

Abstract: Tin steroids and methods of using the same. The tin steroid compounds are prepared by the reaction of various organotin compounds with various steroids. Said compounds inhibit the growth of malignant tumors. They are also useful as insecticides, larvicides, bactericides and fungicides.

Abstract: A method and composition for the preparation of steroid compounds by the reaction of various organotin compounds with steroids. Said compounds retard the growth of malignant tumors and, in some cases, completely destroy the tumor.

Abstract: A composition and method for the controlled release of compounds from a plastic dispenser, usually a thermoplastic, generally in association with a porosigen in contact with water, for example, an aquatic environment or soil mixture. Thermoplastic dispensers are generally made from a water insoluble polymer such as polyethylene, polypropylene, ethylene vinyl acetate, polyamide, polystyrene, polyvinyl acetate, polyurethane, etc. Thermoset plastics, such as epoxy, are also used. The porosigen, depending upon the desired end use and release rate of a compound, can have a solubility of less than 0.1 or 0.001 grams per 100 grams of water, or up to 100 grams per 100 grams of water. The released compound, for example, a herbicide, is contained in the thermoplastic dispenser.

Abstract: A composition and method for the controlled release of compounds from a plastic dispenser, usually a thermoplastic, generally in association with a porosigen in contact with water, for example, an aquatic environment or soil moisture. Thermoplastic dispensers are generally made from a water insoluble polymer such as polyethylene, polypropylene, ethylene vinyl acetate, polyamide, polystyrene, polyvinyl acetate, polyurethane, etc. Thermoset plastics, such as epoxy, are also used. The porosigen, depending upon the desired end use and release rate of a compound, can have a solubility of less than 0.1 or 0.001 grams per 100 grams of water, or up to 100 grams per 100 grams of water. The released compound, for example, a larvicide, a molluscicide, a nematicide, a trace nutrient, a plant regulant, etc., is contained in the thermoplastic dispenser.

Abstract: A method and composition for a film forming antimicrobial material for animal skin wherein said film is resistant to body fluids and provides long term protection against microorganisms. The composition comprises an alcohol soluble carboxylated polycrylate wherein is added an antimicrobial agent, a topical adhesion promoter, and a difunctional amide which crosslinks said polymer as said solvent evaporates. The topical film so formed does not interfere with respiratory processes and is inert to blood, urine, gastric acids, perspiration, saline solutions and the like. Once formed, said film will not resolubilize in alcohol or other common sterilants. Said topical film adheres to tissue and is resistant to physical removal and to abrasion. Film longevity is in excess of 2 days. Substantial protection is provided against pathogenic bacteria and fungi often implicated in hospital infections and thus can serve as a presurgical dressing, preparation agent, as well as in post-surgical prophylaxis.

Abstract: A method and composition for the in-flight encapsulation of particles such as insecticides, herbicides, molluscicides, acaricides, fungicides, nutrients, pheromones, odorants, fragrances, attractants, repellents, trace elements, plant regulants, and the like is disclosed. The composition comprises, by weight, from 1 to 40 percent of said particles, from 0.1 to 25 percent of a film-forming polymer and from 35 to 99 percent of a liquid which renders said polymers soluble or dispersible. Often, other compounds may be added to impart desirable properties such as other film-forming polymers, crosslinking agent film modifying agents, core agents, and adhesives to improve adhesion to a target. The particle may be in a true solution, suspended, or emulsified through the action of surfactants and/or emulsifying agents. The film-forming polymers include various acrylic polymers and interpolymers of alpha-beta olefinically unsaturated carboxylic acids and N-methylol acrylic amides, as set forth in U.S. Pat. No.

Abstract: Compositions of and a method for preparing polymeric formulations that gradually, continuously and uniformly release various compounds over a long period of time in ionic form that are well recognized as essential to the growth of agricultural commodities. The compounds, such as inorganic salts of varying water solubilities, are monolithically incorporated in a thermoplastic polymeric matrix usually of two thermoplastic polymers, for example, a copolymer of poly(ethylene-vinyl acetate) or a copolymer of ethylene and propylene. Release is generally conditioned upon the presence of moisture and is proportional to the moisture content of soil treated with the subject invention. Release rate is tailored to a given desirable condition by regulation of the free volume and/or porosity within the polymer matrix and through dispenser geometry.

Abstract: A method and composition for the in-flight encapsulation of particles such as insecticides, herbicides, molluscicides, acaricides, fungicides, nutrients, pheromenes, odorants, fragrances, attractants, repellants, trace elements, and the like. The composition comprises, by weight, from 1 to 40 percent of said particles, from 0.3 to 25 percent of a film-forming polymer and from 35 to 99 percent of a solvent which renders said polymers soluble. Often, other compounds may be added to impart desirable properties such as a second film-forming polymer, crosslinking agents, film modifying agents, and adhesives to improve adhesion to a target. The particle may be in a true solution suspended or emulsified through the action of surfactants and/or emulsifying agents. The film-forming polymer is selected from the class consisting of polyvinyl ethers, polyvinyl acetate, and interpolymers of alpha-beta olefinically unsaturated carboxylic acids and N-methylol acrylic amides, as set forth in U.S. Pat. No. 3,007,887.

Abstract: A method and composition for destroying pest insects in their aquatic stage and other pest-life forms over a sustained period of time, by the gradual and continuous release of an organotin substance from an inert thermoplastic medium. The composition comprises an organotin of extremely low water solubility bound in an ethylene-vinyl acetate copolymer, or an ethylene-propylene copolymer, in which said organotin is insoluble and in which said organotin is uniformly dispersed with an inert coleachant of moderate or low water solubility. When this formulation is brought into contact with water, the coleachant gradually solvates into the water creating and enhancing the development of porosity within the thermoplastic phase. Said organotin agent, interspersed within the thermoplastic matrix, contacts the entering water and egresses as molecular aggregates being washed through the pore system and into the external watery medium.

Abstract: An insecticide containing polymeric composition having insecticidal activity against insect pests in the household and agriculture comprises an organic insecticide which is dispersed throughout the polymer matrix as in a monolithic manner. Through the appropriate matrix selection and attractant-porosigen compounds, the insecticide and attractant slowly migrates to the polymer surface whereby various insects, for example, ants, fire ants, cockroaches, silverfish and the larva stage of the various crawling insects that damage fruit trees, nut trees, grapes and other agricultural plants are generally destroyed through contact with said insecticide by moving on or across said polymer surface. The insecticide polymeric composition generally contains either an ethylene-propylene copolymer or a copolymer of ethylene-vinyl acetate. The insecticide can be either O,O-diethyl-O-(2-isopropyl-6-methyl-5-pyrimidinyl) phosphorothiate or 2-(1-methylethoxy) phenol methylcarbamate.

Abstract: A method and composition for dispensing through a slow release floating polymer a pesticide for destroying aqueous pests, especially mosquito larva. The polymer matrix which has a specific gravity of less than 1.0 so that it floats, may be shaped into any geometric design such as a thin strip or tape and is anchored by an attached weight having a specific gravity greater than 1.0. The floating polymer assures slow release of the insecticide in that it is not covered by debris or silt as would occur with a sinking polymer matrix. The floating matrix can be utilized wherever desirable in slow turnover or stagnant waters, such as in lakes, ponds, swamps, storm sewer catch basins and portable water containers such as rain barrels, and the like. The floating member generally can contain any pesticide for the elimination of any specific pests or insects. The polymer of the matrix is a copolymer of ethylene-vinyl acetate and/or an ethylene-propylene copolymer.

Abstract: A method and composition for destroying pest insects in their aquatic stage and other pest-life forms over a sustained period of time, by the gradual and continuous release of an organotin substance from an inert thermoplastic medium. The composition comprises an organotin of extremely low water solubility bound in an ethylene vinyl acetate copolymer, in which said organotin is insoluble and in which said organotin is uniformly dispersed with an inert coleachant of moderate to low water solubility. When this formulation is brought into contact with water, the coleachant gradually solvates into the water creating and enhancing the development of porosity within the thermoplastic phase. Said organotin agent, interspersed within the thermoplastic matrix, contacts the entering water and egresses as molecular aggregates being washed through the pore system and into the external watery medium.

Abstract: A method and composition for destroying disease transmitting trematode hosts over a sustained period of time by treatment with a controlled release toxicant composition. The composition comprises a water-soluble, inorganic copper salt capable of releasing copper ions in water which is substantially uniformly dispersed in a moderately crosslinked elastomer in which the copper salt is insoluble. The composition, when contacted with water, allows for the controlled and sustained release of copper ions to cause chronic intoxication and eventual destruction of the molluscan target.

Abstract: A composition and method for the controlled release of compounds from a plastic dispenser, usually a thermoplastic, generally in association with a porosigen in contact with water, for example, an aquatic environment or soil moisture. Thermoplastic dispensers are generally made from a water insoluble polymer such as polyethylene, polypropylene, ethylene vinyl acetate, polyamide, polystyrene, polyvinyl acetate, polyurethane, etc. Thermoset plastics, such as epoxy, are also used. The porosigen, depending upon the desired end use and release rate of a compound, can have a solubility of less than 0.1 or 0.001 grams per 100 grams of water, or up to 100 grams per 100 grams of water. The released compound, for example, a larvicide, a molluscicide, a nematicide, a trace nutrient, a plant regulant, etc., is contained in the thermoplastic dispenser.