186 results about "Algaecide" patented technology

The invention is drawn to silane copolymers prepared from the reaction of one or more polyisocyanates with one or more lubricious polymers having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and with one or more organo-functional silanes having at least two functional groups, which may be the same or different, that are reactive with an isocyanate functional group and at least one functional group reactive with a silicone rubber substrate. The silane copolymers of the invention can be used as coatings that are elastic when dry, lubricious when wet, and resist wet abrasion. These copolymers are useful as coatings for polysiloxane (rubber) and other difficult to coat substrates, especially for medical devices, such as catheters. These silane copolymers can contain active agents such as antimicrobials, pharmaceuticals, herbicides, insecticides, algaecides, antifoulants, and antifogging agents.

The invention provides composition comprising microcapsules containing biocides for coating material such as paint. The invention describes composition of microcapsules containing biocides, especially Irgarol (algaecide) and Zinc Pyrithione (fungicide) and coating material such as paint to increase the life of coating material from the attack of algae and fungi respectively. The invention demonstrates that microcapsules containing biocide dispersed in paint show 0 to 3% reduction in inhibition zone where as un-encapsulated biocide show 20-22% reduction in inhibition zone when analyzed by filter paper assay thus indicating extended duration of biocidal activity with microencapsulated biocide.

Time-release algae-resistant roofing granules have a base particle including an algaecide and an outer coating layer including another algaecide. The at least two algaecides are released over different predetermined periods. The outer layer protects the base particle from exposure to the environment for a predetermined period, then fails catastrophically so that the interior algaecide can be released.

Roofing granule mixtures include multiple classes of algae-resistant granules, with each class of algae-resistant granules including at least one algaecide. One class of granules provides immediate algae resistance, while release of algaecide from other granules is delayed.

The invention discloses high-weather-resistance high-stain-resistance white paint for outdoor woodware and a preparation method of the paint. The high-weather-resistance high-stain-resistance white paint for the outdoor woodware comprises the following components in percentage by weight: 28-32% of water-based pure acrylic emulsion, 28-32% of water-based self-crosslinking acrylic emulsion, 22-27% of titanium dioxide pulp, 0.2-0.3% of a defoaming agent A, 2-3% of a film forming additive, 1.5-2% of wax emulsion, 0.3-0.5% of a light stabilizer, 0.5-1% of nanometer zinc oxide pulp, 0.1-0.15% of a first in-tank preservative, 0.2-0.4% of mildew-proof algaecide, 0.2-0.3% of a substrate wetting agent, 0.2-0.7% of a first thickening agent and 3.85-16.3% of deionized water or purified water. The high-weather-resistance high-stain-resistance white paint for the outdoor woodware is resistant to weather, stain and water, low in smell and VOC and excellent in environmental protection and safety comprehensive performances; the preparation method is simple in process and low in cost.

The invention relates to an environment-friendly coating, in particular to a biological-enzyme inner-wall environment-friendly coating which can be used for decorating the surfaces of indoor wall surfaces, ceilings, gypsum boards, and the like and can clear indoor formaldehyde, release anions and purify indoor air by biological enzymes. The preparation technology of the biological-enzyme inner-wall environment-friendly coating comprises the following steps: firstly, sequentially adding a dispersant, a wetting agent, a foam suppressor, a thickening agent and a mildewproof algaecide at a low speed; sequentially adding titanium pigment, a pH regulator, coarse whiting, calcined kaolin, talcum powder and anion fungi at a medium speed; and sequentially adding latex, a film-forming additive, an anti-freezing agent, a preservative, a foam suppressor, a flatting agent, 40 percent of biological-enzyme solution and H2O at a low speed and filtering and packaging after detecting to be qualified. The biological-enzyme inner-wall environment-friendly coating has the advantages of clearing the indoor formaldehyde, releasing the anions and purifying the air.

The invention relates to a composite hydrogel sphere algaecide and a preparation method thereof, and is applicable to algae removal of a small-size landscape water body which takes the blue-green algae as dominant species. The composite hydrogel sphere algaecide comprises 1000-1500 parts by weight of sodium alginate and 200-600 parts of graphene oxide, and is prepared by firstly, adding sodium alginate into deionized water, stirring with magnetic force until sodium alginate is completely dissolved, thereby preparing a 2-3% (w/v) solution, and by subsequently adding graphene oxide. The preparation method comprises the following steps: 1) adding a certain amount of sodium alginate into deionized water, stirring with magnetic force until sodium alginate is completely dissolved, thereby preparing a 2-3% (w/v) solution; 2) subsequently adding graphene oxide and an allelochemical substance gallic acid, and uniformly mixing by using an ultrasonic assistance oscillation method, thereby preparing a dispersing liquid; 3) dropping the dispersing liquid into a 5-10% CaC12 solution by using a burette so as to cure to obtain calcium gel spheres, curing for 1-2 hours, and taking out; 4) repeatedly washing with deionized water, and standing to remove residues on the surface; and 5) drying in a vacuum oven.

The invention relates to a polypropylene master batch with functions of anti-bacteria, and mildew and algae prevention, and a preparation method of the polypropylene master batch. The polypropylene master batch consists of an antimicrobial agent, a mildew inhibitor, an algaecide, a coupling dispersant and a polypropylene resin. By the method provided by the invention, the antibacterial rate of the polypropylene master batch to escherichia coli and staphylococcus aureus is more than or equal to 99 percent; the level of mildew and algae prevention performance is 0 to 1, and the effects of mildew and algae prevention are durable.

The invention discloses a method of algae bloom through strong flocculate magnetic polymers and algaecide, which comprises the following steps: using strong flocculate nature of polyaluminium chloride ferric; mixing with hyper pure magnet power; getting magnetic strong flocculant suspension; putting into water body environment with rich of algae, nitrogen and phosphor; flocculating algae cell quickly; absorbing nitrogen and phosphor; forming big block dense flocculate body; using magnetic response property of super pure magnetic iron ore power; enriching algae cell under the function of foreign field; transporting out of water body area.

Aquaculture net cage antifouling paint comprises the following components of zinc acrylate resin, diisononyl phthalate, nano-silver powder, nonanoic acid vanillyl amide, zinc pyrithione, algaecide preventol A6, 10-35 parts of zinc oxide by weight, wetting dispersant, anti-settling agent, talcum powder and an organic solvent. The invention further discloses a preparation method of the antifouling paint. Compared with the prior art, the antifouling paint and the preparation method thereof have the advantages that the compounded antifouling agent has complementary advantages, the existing antifouling agent system is widened, excellent killing property for a plurality of marine fouling animals and algae is brought, no poison and no residue properties are realized. An antifouling coating has certain flexibility, and improves the adhesion, the mechanical performance and the durability.

The invention discloses a water body algaecide and a method for the production thereof. The water body algaecide comprises the following components by weight: copper agent in an amount of 2 to 15 parts, zinc agent of 0 to 10 parts, aluminum agent of 40 to 60 parts, carriers of 20 to 30 parts, calcium carbonate of 5 to 15 parts and coating agent of 0.5 to 10 parts. The water body algaecide of the invention has a plurality of persistent efficacies of alga removing, flocculation, sedimentation and phosphorus consolidation, and can remove the algae effectively and prevent water bloom.

Algae-resistant roofing granules are formed by extruding a mixture of mineral particles and a binder to form porous granule bodies, and algaecide is distributed in the pores. Release of the algaecide is controlled by the structure of the granules.

The invention relates to a kind of manufacturing method of bromine-chlorine hydantoin disinfection algaecide. It uses 5,5-dimethyl hydantoin as main material; and then make it dissolve in water or in mother liquor contained sodium bromide that generated in dibromine hydantoin production; uses bromine element and chlorine gas as halogenating agent, and meanwhile, dropwise sodium hydroxide solution in order to proceed bromination and chloridization reaction; after the halogenation product having centrifugation, water washing, and drying treatment, bromine-chlorine hydantoin can be get. The features are as follows: the concentration of sodium hydroxide solution added in is 33-37%; use online measurement to control adding molar composition of material, so that it can proceed instant optimal controls all through the reaction. It has the remarkable effictiveness, such as simple operation, high product yield that can reach up to more than 96%, high product purity that can reach to more than 99%, low discharge capacity.

The invention discloses a preparation method of a compound microbial algaecide. The method comprises the following steps: reasonably combining separated and purified extracellular polymeric substances, kaolin and the like so as to prepare a compound microbial flocculant; then fossilizing separated alga dissolving bacteria and algal toxin degrading bacteria; finally, reasonably compounding the compound microbial flocculant with the fossilized alga dissolving bacteria and algal toxin degrading bacteria so as to prepare the compound microbial algaecide. The compound microbial algaecide is good in alga killing effect and algal toxin degrading effect; source materials adopted during the preparation of the compound microbial algaecide are low in cost, so that the compound microbial algaecide is low in preparation cost and harmless to natural ecosystems. The prepared compound microbial algaecide is organically integrated with functions of flocculation-type alga removing, microbial alga dissolving and micro-biological degradation of algal toxin, so that the safe and efficient treatment of water blooms is realized.

The present invention is directed to a composition for reducing the levels of microorganisms in recreational water systems, comprising: (1) a biocidal effective amount of dibromonitrilopropionamide (DBNPA); (2) optionally, a biocidal effective amount of an algaecide selected from the group consisting of didecyldimethylammonium chloride (DDAC), zinc, and copper; and (3) optionally, a compound capable of in situ activation to form an oxidizing agent; wherein the composition is effective for reducing the levels of microorganisms in recreational water systems. The present invention is also directed to a method of controlling the growth of microorganisms in recreational water systems, comprising the step of providing the above composition; and adding the composition to a recreational water system.

The invention discloses an algaecide. The algaecide mainly comprises cinnamic aldehyde, eugenol and citric acid, wherein the content of the cinnamic aldehyde is between 0.01 and 5.0ml/l; the content of the eugenol is between 0.01 and 5.0ml/l; the mass content of the citric acid is between 1.0 and 5.0 percent; the content of azone is between 1.0 and 1.5 percent; and the content of NP-10 is between 8 and 15 percent. The algaecide has good algae-killing effect, wide range of pH application and convenient and safe use, cannot cause secondary pollution to the environment, has deodorizing effect, and can be widely applied to algae-killing and water purifying treatment for natural and landscape water bodies.

The invention relates to an algaecide. The algaecide which can be used for effectively removing algae and precipitating alga bodies contains chitosan, fly ash autoclaved brick powder and allelopathic chemicals of gallic acid, nonoic acid or N-phenyl-naphthylamine, and is obtained by dissolving a certain amount of chitosan by using hydrochloric acid, then adding the fly ash autoclaved brick powder of 40-200 meshes, and then adding the dimethyl sulfoxide assisted dissolved allelopathic chemicals of gallic acid, nonoic acid, N-phenyl-1-naphthylamine or N-phenyl-2-naphthylamine. The chitosan and the fly ash autoclaved brick powder used in the algaecide provided by the invention are nontoxic, the allelopathic chemicals of gallic acid, nonoic acid and the like belong to plant secondary metabolism products, can be degraded easily in a water body and cannot cause secondary pollution, and although the diluted HCl solution is used for dissolving chitosan, great changes of the pH value of the water body are not caused in a dosage range. The algaecide provided by the invention can be used for removing the algae effectively and ensuring that the alga bodies are sunk to the bottom of water, has a small influence on the environment and does not cause secondary pollution, the water body is clear, and the beautiful outlook of the water body is not influenced, so that the algaecide is suitable for removing the algae from a small landscape water body taking blue algae as a dominant species.

The invention relates to an algaecide and a preparation method thereof. The algaecide for flocculating and settling alga bodies contains the following components in parts by weight: 1000 parts of sodium alginate and 100-900 parts of multi-walled carbon nanotubes, wherein sodium alginate is added into deionized water at first, then the mixture is subjected to magnetic stirring until the sodium alginate is completely dissolved, and then 0.8-2.4 parts of the multi-walled carbon nanotubes or/and gallic acid are added. According to the preparation method of the algaecide, the sodium alginate, the multi-walled carbon nanotubes and an allelopathic substance namely the gallic acid are used as main ingredients to prepare a composite hydrogel ball algaecide, and the preparation method comprises the following steps: (1) adding a certain amount of sodium alginate/gallic acid into the deionized water, and performing magnetic stirring until the sodium alginate/gallic acid is completely dissolved; (2) adding the multi-walled carbon nanotubes, and mixing uniformly by using an ultrasonic assisted oscillation method to prepare a dispersion; (3) dropwise adding the dispersion into a 5-10% CaCl2 solution by using a dropper to cure into calcium gel balls, fixing for about 1-2h, then taking out, then flushing repeatedly with deionized water, and standing to remove surface residues; and (4) performing vacuum drying to prepare the algaecide.

The invention discloses a preparation method of a composite inorganic polymer stable algaecide and an algae removing method. The algaecide can effectively flocculate algae to form flocs; the algae can be removed from a water body quickly by the action of an external magnetic field; as magnetic powder and the flocs are closely combined, the flocs do not fall easily in a removing process; and the removing efficiency of the algae is improved. As the algaecide contains an efficient adsorbent, contaminants such as algal toxin, nitrogen and phosphorus in the water body can be adsorbed and enriched, and are removed together with the flocs. The composite algaecide has the advantages that the algaecide is stable, high in removing efficiency, and environment-friendly, and has potential application value and market competiveness.

A woven fabric pool cover has an antimicrobial agent that reduces/prevents the growth of microbes on the pool cover and in the water of a swimming pool covered by the cover. The fabric cover may be woven from polyolefin extruded monofilaments, and/or fibrillated tape yarns where the yarns have an antimicrobial agent added during the yarn extrusion process or added to fabric formed by the yarns. The fabric may be woven from traditional polyolefin extruded monofilaments, and/or fibrillated tape yarns before the resulting fabric is treated with a antimicrobial agent. Such treatment may involve spraying a solution onto the fabric or also dipping, soaking, or padding the fabric into the treating solution. The antimicrobial agent may form a zone of inhibition around the yarns and may seep out of the fabric to form zones of inhibition in the surrounding environment, like on the cover and/or in swimming pool water.

The invention relates to a kind of manufacturing method of dibromine hydantoin disinfection algaecide. It uses 5,5-dimethyl hydantoin as main material; and then make it dissolve in water or in mother liquor; then add halogen this solution, at the same time, dropwise sodium hydroxide solution in order to proceed bromination reaction; after, make the product have water washing, filtration and drying treatment in order to get dibromine hydantoin. The features are as follows: the concentration of sodium hydroxide solution added in is 33-37%; use online measurement to control adding molar composition of material, so that it can proceed instant optimal controls all through the reaction. It has the remarkable effictiveness, such as simple operation, high product yield that can reach up to more than 96%, high product purity that can reach to more than 99%, low discharge capacity.

For use in a pool or spa, the combination comprising, filter structure in the path of pool or spa water flow, substance in direct contact with a surface or surfaces of said filter structure, to contact said flow, said substance characterized as being one of the following: i) bacteria inhibiting ii) an algaecide iii) an algaestat iv) a sanitizer. v) a bacteriostat

The invention provides a preparation method of a copper complex algaecide and belongs to the environment protection field. Divalent copper ion compounds, organic complexes and active agents are added into water, the proportion is 2 to 4:0.5 to 1.5:0.5 to 1.5 according to mole equivalent ratio, the prepared solution is heated to reflux state so as to form homogeneous solution, at last water is added, and copper atoms in the solution is regulated to 3 percent to 15 percent to prepare the copper complex algaecide. The preparation method of the copper complex algaecide of the invention has the advantages of good algae removal effect, low amount and simple use and is provided with potential of large scale popularization.

A micro-current electrolysis-sterilization-algaecide device includes the solution conductivity detector installed in the inlet pipe of the tank, at least a group of electrodes set in the tank in accordance with the order of anode, auxiliary electrode, and cathode, and the controller, which judges the conductance values, controls the electrode polarity and the circuit connections. Said controller includes judging unit to determine the conductance values of water, and according to the results to trigger the corresponding seawater electrolysis-model unit, the fresh water electrolysis-model unit, or the pole-reversing electrolysis-model unit. The device can be used to the seawater and fresh water sterilization algaecide, with good bactericidal algaecide effect, automatic scaling, and a wide range of applications. By adding ultrasonic generator, the device can destroy a variety of bacteria and algae cells. Said device has a simple structure and a wide range of use.

The invention discloses an algaecide, and a preparation method and application thereof. The algaecide comprises HCl, starch, expanded vermiculite and water, and based on 100 parts by weight of expanded vermiculite, the content of HCl is 7-13 parts by weight, the content of expanded vermiculite is 7-13 parts by weight, and the particle size of expanded vermiculite is less than 100 mu m. The preparation method of the algaecide comprises: mixing HCl, starch, expanded vermiculite and water, wherein based on 100 parts by weight of expanded vermiculite, the content of HCl is 7-13 parts by weight, the content of expanded vermiculite is 7-13 parts by weight, and the particle size of expanded vermiculite is less than 100 mu m. The algaecide provided by the invention has a removal rate on harmful algae of up to 99.89%.