Disclosed is a processing method of a self-reinforced starch-based multifunctional material, and belongs to the technical field of starch deep processing. The processing method takes bulk starch as a base material, including the following steps: firstly reacting starch nanoparticles with an organic acid anhydride reagent and adding a bacteriostatic agent to prepare composite nanoparticles, then mixing the composite nanoparticles with the bulk starch, an etherifying agent, a crosslinking agent, a plasticizer and the like, and finally preparing a starch-based multifunctional material by dry extrusion modification combined with a starch-based nanoparticle assembly and reinforcement technology. The method of the disclosure is simple and convenient in step, mild and controllable in reaction, and continuous and green in production. The obtained product has good mechanical properties, high barrier properties and high antibacterial properties, can be applied to many fields such as food, textiles, daily chemicals and medicine, and has a broad market prospect.

Disclosed is a processing method of a self-reinforced starch-based multifunctional material, and belongs to the technical field of starch deep processing. The processing method takes bulk starch as a base material, including the following steps: firstly reacting starch nanoparticles with an organic acid anhydride reagent and adding a bacteriostatic agent to prepare composite nanoparticles, then mixing the composite nanoparticles with the bulk starch, an etherifying agent, a crosslinking agent, a plasticizer and the like, and finally preparing a starch-based multifunctional material by dry extrusion modification combined with a starch-based nanoparticle assembly and reinforcement technology. The method of the disclosure is simple and convenient in step, mild and controllable in reaction, and continuous and green in production. The obtained product has good mechanical properties, high barrier properties and high antibacterial properties, can be applied to many fields such as food, textiles, daily chemicals and medicine, and has a broad market prospect.

Methods for protecting wooden materials from termite infestation include the steps of providing an insect control composition consisting of 5%-35% by weight cold pressed orange oil containing a concentration of at least 80% D-Limonene, 20%-50% by weight modified acrylic emulsion copolymer, 1%-10% by weight dipropylene glycol methyl ether, 1%-5% by weight polysiloxane polymer, 1%-5% by weight amine solution, and 20%-60% by weight water, and applying to the wooden material the insect control composition where protection against termites is desired. Other methods for protecting wooden materials from termite infestation include the steps of providing one or more of the disclosed insect control compositions and applying to the wooden material the respective to insect control composition. Applying the insect control composition to the wooden material preferably includes spraying, dipping or applying by paint roller brush the insect control composition to the wooden material.

The present invention relates to hot melt adhesive compositions comprising ethylene vinyl acetate copolymer(s) and isothiazolinone fungicides according to formula (I). Such hot melt adhesives show improved fungus resistance and are thus particularly suited for applications where such properties are desirable, such as ventilation and air-conditioning systems and air filters. The invention further relates to the use of said hot melt adhesives in such ventilation and air-conditioning systems and air filters as well as for bonding, stabilizing and sealing of pleats, edge and frame bonding, or seam sealing of bag filters. Further encompassed are air filters comprising the hot melt adhesives and methods of their manufacture using the hot melt adhesives of the invention.

Provided is an antifouling coating composition, which can form a coating film having good hardness and good physical properties and having a wear degree appropriate for expressing a long-term antifouling effect, has a viscosity not being excessively high, and makes it possible to reduce a content of volatile organic compounds, and a polymer-containing composition which is suitable for obtaining the antifouling coating composition. The polymer-containing composition contains a (meth)acryl-based copolymer (A-1), in which the (meth)acryl-based copolymer (A-1) contains a constitutional unit (U11) or a constitutional unit (U12) having carboxylate forming an ionic bond with a divalent metal atom, and has a weight-average molecular weight of 1,000 to 5,000, and the polymer-containing composition has a coating film hardness (Martens hardness) equal to or higher than 2.5 N/mm.sup.2.

Hydrogels are provided that include an antimicrobial agent and a cross-linkable urethane-based polymer (CUP). Such hydrogels may be used for the controlled-release of antimicrobial agents as well as in the manufacturing of wound dressings. Wound dressings are provided that comprise a hydrogel as defined herein.

A preservative composition comprising an isothiazolinone, such as 1,2-benzisothiazolin-3-one, and a polyethertriamine in a synergistic combination. The polyethertriamine enhances the antimicrobial activity of the isothiazolinone, achieving the desired antimicrobial activity at synergistically lower concentrations than with the isothiazolinone in the absence of the polyethertriamine. Also, methods of using the preservative compositions to provide wet-state preservation of industrial materials including paints, coatings, and metal working fluids.

The present invention relates to a composition comprising a specific hyperbranched copolymer (HBC) of the monomers dodecenyl succinic acid anhydride, diisopropanol amine and bis-dimethylaminopropyl amine and the compound 1,3-propandiol and/or N-hydroxyoctanamide. It has been found that said hyperbranched copolymer synergistically enhances the antimicrobial action of a 1,3-propanediol and/or N-hydroxy-octanamide.

The present invention relates to a composition comprising a specific hyperbranched copolymer (HBC) of the monomers dodecenyl succinic acid anhydride, diisopropanol amine and bis-dimethylaminopropyl amine and the compound 1,3-propandiol and/or N-hydroxyoctanamide. It has been found that said hyperbranched copolymer synergistically enhances the antimicrobial action of a 1,3-propanediol and/or N-hydroxy-octanamide.

A method for preparing an anti-bacterial and anti-ultraviolet multifunctional chemical fiber includes: dissolving several soluble metal salts and a polymer complexing dispersant into water to prepare an aqueous solution; adding into a polymer monomer; reacting under microwave or hydrothermal action to obtain a polymer monomer containing multifunctional nano oxides; adding the polymer monomer with other monomer, catalyst, initiator, stabilizer, and the like into a polymerization reactor; and carrying out esterification, polycondensation or copolymerization to obtain a polymer melt, and carrying out spinning or ribbon casting and granule cutting to obtain an anti-bacterial and anti-ultraviolet multifunctional chemical fiber or masterbatch chips. By generating nano metal oxides in the monomer in situ before the polymerization reaction, small particle sizes and dispersibility of the nano metal oxide are ensured; the chemical fiber has efficient, durable antibacterial and anti-ultraviolet functions and is free of metal ion precipitation.