Polymer compositions suitable for modeling are provided as plastisols with a high content of volatile substances, such as bactericidal, aromatizing, and/or flavoring volatiles. Such plastisols are provided by mixing a lyophilic polyamide or lyophilic complex polyester with a plasticizer of moderate to low polarity that includes a bactericidal, aromatizing, and/or flavoring components, such as an essential oil. After mixing, additives such as fillers, pigments, and gelling agents are added. A solid plastic is producing by heating the formed plastisol to a gelation temperature and then heating to a solution temperature to generate a solid plastic with enduring bactericidal activity, scent, and/or flavor.

A process for producing an aqueous coating composition comprises providing an aqueous polymer dispersion having a pH <7 and adding to the dispersion 1 to 30 ppm of 5-chloro-2-methyl-3(2H)-isothiazolone (CIT) and 10 to 1000 ppm of 2,2-dibro-mo-3-nitrilopropionamide (DBNPA), all by weight of the total weight of the dispersion. At least one adjuvant is also added to the dispersion to produce a coating composition. When the coating composition is to be put into service, the DBNPA is decomposed by raising the pH of the coating composition and the CIT is decomposed either by raising the pH of the coating composition or by adding a CIT-decomposing compound to the coating composition.

Synthesis of polyionenes with built-in degradable linkers through addition polymerization of a novel class of degradable A.sub.2-type monomers (d-A.sub.2), and their use as antimicrobial agents are disclosed. A library of biodegradable polyionenes and Gemini-surfactants made from d-A.sub.2 monomers are also disclosed. These materials have potent and broad spectrum of antimicrobial activity with high selectivity over mammalian cells.

Synthesis of polyionenes with built-in degradable linkers through addition polymerization of a novel class of degradable A.sub.2-type monomers (d-A.sub.2), and their use as antimicrobial agents are disclosed. A library of biodegradable polyionenes and Gemini-surfactants made from d-A.sub.2 monomers are also disclosed. These materials have potent and broad spectrum of antimicrobial activity with high selectivity over mammalian cells.

A coating composition for applying a very thin film coating to a substrate such as a polymeric film comprises a copolymer such as a block copolymer (BCP) that is compatible with the substrate, an alcohol solvent or solvents capable of dissolving the copolymer, a hydrolysed metal alkoxide precursor, a carboxylic acid stabiliser, and an active agent in an ionic, molecular, or small nanoparticle form. The active agent is configured to provide a functionality to the coating composition, selected from antimicrobial, antifungal, barrier, therapeutic, electrical, electronic, magnetic and optical. The composition is a sol comprising a continuous non-sedimentable/stable suspension of very small sized (of nano order) amorphous inorganic polymers in their oligomeric or polymeric state, and comprising the active agent dispersed in a hydrolysed metal alkoxide-BCP matrix. Substrates coated with very thin coatings are also provided, including coated LDPE which is activated before coating by UV/ozone, plasma or corona treatment prior to deposition of a wetting layer.

A method of treatment of a marine surface to improve the resistance of the surface to fouling from a marine organism, the method comprising treatment of a surface prone to fouling from a marine organism with a composition comprising a lactam, wherein the composition comprises from 0.0005 to 5 wt. % of a lactam; wherein the surface to be treated is selected from steel, light alloy, plastic or composites; and, wherein the marine organism is Vibrio anguillarium, Aspergillus brasiliensis, and Cellulophaga lytica either alone or comprised in a mixture with any other marine organism; to a composition comprising the lactam and to the use of the lactam to inhibit growth of a marine organism on a marine surface, wherein the surface to be treated is selected from steel, light alloy, plastic or composites; and, wherein the marine organism is Vibrio anguillarium, Aspergillus brasiliensis, and Cellulophaga lytica either alone or comprised in a mixture with any other marine organism; and to use of the lactam to impart anti-biofilm properties to a marine surface, wherein the surface to be treated is selected from steel, light alloy, plastic or composites.

Novel compositions and systems for closure of wounds with antimicrobial effectiveness are disclosed. The compositions provide devices of improved flexibility and elasticity and are readily applied to wound sites or over wound closure devices. The present invention is also directed to a novel platinum catalyst for use in such compositions. The catalyst provides for rapid curing on topical surfaces such as skin and bonds to such surfaces in about 2-5 minutes.

Provided are a superabsorbent polymer capable of exhibiting improved bacterial growth-inhibitory property without deterioration in physical properties of the superabsorbent polymer, such as water retention capacity and absorbency under pressure, or without an increase in the generation of dust, and a preparation method thereof. The superabsorbent polymer may include a base polymer powder including a crosslinked polymer of water-soluble ethylenically unsaturated monomers including acidic groups, of which at least a part is neutralized; and a surface-crosslinked layer which is obtained by additionally crosslinking the crosslinked polymer via a surface crosslinking agent to be formed on the surface of the base polymer powder, wherein the crosslinked polymer of the base polymer powder or the surface-crosslinked layer includes an antimicrobial agent including an organic acid salt having an aromatic ring inside the crosslinked structure thereof.

A water emulsion and film are provided comprising a polyacrylate random copolymer synthesized from acrylic acid (AA), butyl acrylate (BA), methyl methacrylate (MMA), and 2-ethylhexyl acrylate (EHA). The emulsion may be applied to a surface in liquid form, quickly drying to yield a peelable protective barrier film.

The present invention provides a germ-repellent silicone rubber comprising: a silicone rubber substrate and a germ-repellent active ingredient incorporated therein; wherein, the silicone rubber substrate includes polydimethylsiloxane; the germ-repellent active ingredients include poly(ethylene oxide) and silicone oil or their derivatives. The disclosed germ-repellent silicone rubber reduces the bacterial growth by inhibiting their adherence to the surface instead of killing them, does not contribute to super bacteria formation nor cause skin irritation.