1305 results about "Non toxicity" patented technology

The invention discloses a nontoxic antifouling paint for an oceanographic ship and facilities and a method for preparing the paint. The paint consists of the following components in percentage by weight: 15 to 55 percent of base material, 0.01 to 10 percent of antifouling agent, 10 to 30 percent of filler, 0.3 to 25 percent of pigment, 2 to 8 percent of auxiliary agent and 3 to 55 percent of solvent, wherein the antifouling agent is silver grains with average grain diameter of between 1 and 200nm. The paint does not contain toxic agents, such as dichloro-diphenyl-trichloroethane, organic tin,cuprous oxide and the like, at all while effectively suppressing corrosion of marine biological attachments, meets the related regulations of international maritime organization and future development trend of the antifouling paint, realizes non-toxicity and environmental friendliness of the marine antifouling technology, and can be widely applied to the facilities and the fields, such as ships, floating piers, marine oil platforms, submarine cables, cooling pipes of power plant near the sea, sea water culture net cage and the like.

The invention provides an ultraviolet curable organic silicon-acrylic resin electronic adhesive, which comprises the following components: (1) 100 parts of doublebond-containing acrylic monomers or prepolymer, (2) 5 to 500 parts of doublebond-containing organic silicon resin with a molecular weight of 1,000 to 10,000, (3) 1 to 100 parts of vinyl compound modified inorganic nano particle, (4) 1 to 50 parts of radical ultraviolet initiator, (5) 1 to 100 parts of organosilan, (6) 0 to 200 parts of inorganic reinforcing agent, and (7) 0 to 50 parts of auxiliary agent, wherein the ultraviolet curable organic silicon-acrylic resin is prepared by carrying out ultraviolet curing on the materials, and the solid content thereof is 100 weight percent. The product produced by the invention has the excellent characteristics of firm bonding with metal, glass and plastic materials and electronic devices, good optical property, good elasticity, good weather resistance, safety, non-toxicity, convenient construction and the like, can replace traditional solvent electronic adhesives, and is used for protective coatings, protective adhesives, packaging materials and the like of electronic devices, integrated circuits, printed circuits, LED chips and the like.

Novel antiviral combinations for the treatment or prevention of viral infections, in particular, HIV, are disclosed. This new antiviral therapy employs either DP-178 or DP-107, viral fusion inhibitors, in combination with at least one other antiviral therapeutic agent. The combinations of the invention are better than single therapies alone, and in certain cases are synergistic. The use of DP-178 or DP-107 is an ideal therapy to combine with another antiviral, given both the novel mechanism which this therapeutic blocks HIV transmission and the non-toxicity of the therapeutic.

The invention discloses a water-based ink for plastic printing and a preparation method thereof. The water-based ink is prepared by using epoxy resin modified water-based polyurethane emulsion and organic silicon modified styrene-acrylic emulsion as base materials and using deionized water and alcohol as solvents. The water-based ink comprises the following components by weight percent: 15-30% of epoxy resin modified water-based polyurethane emulsion, 20-35% of organic silicon modified styrene-acrylic emulsion, 10-20% of non-toxic organic pigment, 5-30% of deionized water, 5-20% of ethanol or isopropanol, 3-5% of triethylamine and 1.6-10% of additive. The water-based ink does not contain the volatile organic solvent, is incombustible, nonexplosible and non-toxic and has high attachment fastness on the plastic film and good printing effect; the ink has high chemical resistance, acid resistance and alkali resistance; and the ink has good water resistance, heat resistance, freezing resistance and oil resistance. The ink can be widely used in the packaging and printing of the industries such as grain, vegetables, alcohol and tobacco, and food; and the safety and non-toxicity of the ink can be ensured, and the ink is a green and environmentally-friendly product and has considerable market potential.

Implantable electrode lead for stimulation in or on the heart, comprising a body having an insulating and sealing outer surface, at least one electrical connection between an outwardly electrically active region having a connecting unit for the electrical connection to a cardiac pacemaker, cardioverter/defibrillator or other suitable electrically active implantable device, and an active or passive fixation. To reduce the electrical resistance while, at the same time, providing for a long life, the outwardly electrically active regions are manufactured with a component of high bioresistance, biocompatibility and non-toxicity, and a component with low electrical resistance.

The invention relates to a preparation method for a chitosan natural polymer modified crude oil desalting demulsifier. The method comprises the following steps: 1) modifying polyethylene glycol monomethyl ether by halogenating; 2) preparing glycidyl dimethyl alkyl ammonium chloride; 3) preparing quaternized carboxy alkyl chitosan; 4) causing the modified polyethylene glycol monomethyl ether to react with the quaternized carboxy alkyl chitosan, thereby obtaining a target product, polyethylene glycol monomethyl ether grafted quaternized carboxy alkyl chitosan. According to the invention, the chitosan natural high-molecular compound is taken as the raw material and has the advantages of wide resource, naturality, non-toxicity, sustainability, excellent biological compatibility of products, degradability, and the like. The demulsifier prepared according to the invention has excellent demulsification dewatering effect; the molecule of the demulsifier contains a large amount of carboxy alkyl groups and quaternary ammonium salt groups and the electronegative ions, including metal cation, naphthene acid radicals, and surfaces are electronegative grains and have strong combining capacity, so that the demulsifier has the capacities of demulsifying while removing oil-soluble salt.

The seven layer high obstruct packing film includes the first printing layer made of LLDPE, LDPE and FSU; the second shading layer made of white color, LLDPE and LDPE; the third adhering layer of adhesive Tie; the fourth obstructing layer comprising EVOH; the fifth adhering layer of adhesive Tie; the sixth shading layer made of black color, LLDPE and LDPE; and the seventh thermal sealing layer made of LLDP, LDPE and FSU. The present invention possesses the advantages of non-toxicity, high humidity resistance, high oxygen resistance, high heat resistance, high flexibility, high cold resistance and high thermal sealing strength, and is used in packing milk without need of adding preservative and being cold stored.

The invention discloses a cooling liquid for automobiles, and relates to an organic anti-freeze cooling liquid and a preparation method thereof. The cooling liquid is characterized by comprising 40 to 60 percent of glycol, 60 to 40 percent of de-ionized water and additives, wherein the additives comprise a reducing agent, an antioxidant, an antiseptic, a rust preventative, a mildew inhibitor, a scale inhibitor, a defoaming agent, a pH value buffer and a pH value regulator. The preparation method comprises the following steps of: 1, adding the de-ionized water and the reducing agent into a reactor A and heating the mixture to the boiling point; and 2, squeezing the liquid in the reactor A into a reactor B after the temperature reaches the normal temperature, and adding the glycol and the additives into the reactor B to prepare the anti-freeze cooling liquid. Due to the adoption of hydrazine hydrate in the invention, free oxygen in the de-ionized water is eliminated and the problem of corrosion resistance is solved well; the product meets the requirements on long-term effect, environmental protection, safety and non-toxicity; the cooling liquid has the advantage of low cost of the required raw materials; the preparation method has the advantages of simplicity, a few facilities and low energy consumption, wins warm praise from customers and has extremely high popularization and application value and broad market prospect.

The invention provides a Chinese herbal medicine feed additive for chickens and a preparation method and application thereof. The preparation method comprises the following steps: using a plurality of natural Chinese herbal medicines as raw materials, crushing the Chinese herbal medicines in the formulation, leaching the effective components in the Chinese herbal medicines, adding the prepared additive the amount of which is 0.5 to 4 weight percent of the feeding mass in daily feeds for various chickens, feeding the chickens after stirring evenly, and discontinuously adding feed in the whole process. The feed additive has the advantages that the raw materials are scientific and reasonable, the preparation process has strong operability, and the prepared additive has the characteristics of trace, high efficiency, favorable palatability, safety and non-toxicity, can promote growth and development of the chickens remarkably, advances the marketing time, and reduce feed cost; the feed additive has the functions of excellent bacteria resistance, stress resistance and immunity improvement, reduces the occurrence of plagues, realizes healthy and non-resistant breeding in the whole process, and can produce green and good-quality chicken products without medicament residues.

The invention discloses an efficient and clean beneficiation method of complex sulfide ore. The method includes the following steps: utilizing an activator selected from one of or some of oxalic acid, ammonium carbonate, ammonium bicarbonate, ammonium sulfate, ammonium bisulfate and ferrous sulfate as a combination; utilizing collectors including xanthate collectors, black collectors, white collectors and thionocarbamate collectors; mixing the activator, the collectors and BC; stirring; and performing flotation separation of the sulfide ore to obtain the sulfur concentrate. The inventive beneficiation method has the advantages of high discrimination property, cleanness and non-toxicity; and is suitable for the flotation separation of the complex sulfide ore, particularly the flotation separation of complex sulfide ore containing pyrrhotites and pyrites with fine dissemination size.

The invention discloses a method for preparing a high-strength polyvinyl alcohol hydrogel. The method comprises the following steps: taking polyvinyl alcohol as an initial raw material, and heating and dissolving in a water bath, thereby obtaining a polyvinyl alcohol aqueous solution; performing repeated low-temperature freezing-thawing on the polyvinyl alcohol aqueous solution, thereby obtaining polyvinyl alcohol hydrogel; adding the polyvinyl alcohol hydrogel into a saturated saline solution, thereby obtaining the high-strength polyvinyl alcohol hydrogel. According to the invention, a hydrogen bond cross-linking structure and a microcrystalline domain are sequentially constructed by a two-step method, and then the high-strength polyvinyl alcohol hydrogel is prepared. The preparation method disclosed by the invention is simple and environmental-friendly, and the prepared high-strength polyvinyl alcohol hydrogel has excellent mechanical property, non-toxicity and high biocompatibility.

The invention relates to a protecting paint special for petroleum pipe/drill pipe, and a construction method and a preparation method thereof. The paint is composed of modified acrylic resin and modified alkyd resin as main film-forming substances, formaldehyde resin, chlorinated polyether resin and epoxy resin, etc. as modifiers, nontoxic tinting pigment, nanometer micro powder, environment-friendly solvent, nontoxic excluder pigment, additive, accessory ingredient, etc.; the paint is provided with the following advantages: low cost, good storage stability, not prone to deposit, good application property, strong anti-sagging property, coat flame retarding, good drying and fullness, strong adhesion, weathering resistance, rust prevention, non-toxicity and environment-friendly. The protecting paint special for petroleum pipe/drill pipe is specially designed for short-term antiseptic coat, such as sleeve of petroleum casing pipe, oil well pipe, oil well drill pipe, etc.

The invention discloses a super-hydrophobic super-lipophilic emulsion separating mesh membrane, and a production method and an application thereof. The method comprises the following steps: 1, dissolving dopamine hydrochloride and tris(hydroxymethyl)aminomethane in water, and uniformly stirring to obtain a mixed solution A; 2, dipping a fabric net in the mixed solution A, and carrying out a reaction 1 to obtain a polydopamine membrane modified fabric net; 3, dissolving a siloxane precursor, a silane coupling agent 1, a silane coupling agent 2 and a titanium dioxide precursor in an organic solvent, and uniformly stirring to obtain a mixed solution 2; and 4, taking out the fabric net in step 2, washing, dipping the washed fabric net in the mixed solution B, adding water and ammonia water, and carrying out a reaction 2 to obtain the emulsion separating mesh membrane. The emulsion separating mesh membrane has the advantages of non-toxicity, harmlessness, environmental protection, easy cleaning and preservation, repeated use and good stability, can be widely used in separation of oil-water emulsions, and has a good separating effect.

Disclosed is a degumming agent which is composed of alcohol, acid, colliquefaction agent, surface active agent, osmotic agent and water, wherein the alcohol refers to 30.0-50.0 w% aliphatic alcohol, the acid is 0.5-3.0 w% saturated fatty acid with C9-C16 linear chain, the colliquefaction agent is 3.0-9.0 w% aliphatic alcohol and monoether, the surface active agent refers to 4.0-9.0 w% anion and nonionic, and the osmotic agent is 0.0-2.0 w% JFC-2. The process of employing the degumming agent to remove clearcole and self-adhesive paper placed on the surface of plastics is that the degumming agent is heated to 40-60 DEG C, the plastics of which the adhesive is ready to be removed are mixed in the degumming agent for 10 minutes, enabling the contact between the adhesive and the degumming agent to achieve best degumming effect. The degumming agent of the invention has relatively high degumming capability and no damage to the surface of the plastics, and also has the advantages of low cost, innoxiousness, non-toxicity, no flammability, environment preservation, convention and safe utilization. Further the degumming agent can be used repeatedly.

The invention provides a high melt strength polypropylene resin which contains 100 portions of polypropylene resin, 0.01-10 portions of organic peroxide, 1-10 portions of multifunctional monomer, 0.01-8 portions of branching accelerator and 0.1-2 portions of nucleating agent. The inventive high melt strength polypropylene resin has better performance, environment protection, non toxicity and the application in bubble, hot shaping and blow molding fields.

The invention discloses an ultra low temperature epoxy resin and polyester mixed powder coating material. The compositions in percentage by weight of the coating material are: 32 to 38 percent of epoxy resin, 32 to 37 percent of polyester, 18 to 22 percent of titanium pigment, 0.8 to 1.2 percent of flatting agent, 0.3 to 0.5 percent of antifoaming agent, 1 to 1.2 percent of antistatic agent, 1 percent of benzoin, 0.7 to 2 percent of pigment, 0.8 to 1 percent of brightness agent and 2 to 5 percent of filler. Aiming to overcome the disadvantages of the prior powder coating material including high cost and narrow application range, the invention provides the ultra low temperature epoxy resin and polyester mixed powder coating material which has low cost and wide application. The coating material has the advantages of high utilization rate, non toxicity, no pollution, high yield and low cost, etc.

The invention provides a collagen matrix freezing gel used for biomedical materials and a preparation method thereof. The collagen matrix freezing gel is the collagen extracted from skins or tendons of healthy domestic animals using the enzyme method with the molecular weight of 280 to 320kDa and a well maintained triple helical structure; the collagen reacts for 1 to 7 days in the condition of low temperature of 0 to minus 50 DEG C in a die after through cross linked and modified reaction with hydroformylation polysaccharide, then extrudes the die and is defrosted, thus forming the collagen matrix freezing gel. The preparation of the collagen matrix freezing gel of the invention in particular relates to the extraction of the collagen, the preparation of the hydroformylation polysaccharide and the synthesis of hydroformylation polysaccharide-collagen matrix freezing gel. The hydroformylation polysaccharide-collagen matrix freezing gel prepared by the invention improves the mechanical property, thermal stability and anti-enzyme degradation, etc., of pure collagen gels, and the freezing gel has the advantages of porosity, plasticity, hydrophilic property and non-toxicity, and can be used as biomedical materials such as bio-scaffold, cell cultivation, drug controlled release and biological dressings.

The invention relates to a chemical cleaning agent for clearing impurities such as ferrous sulfide, which is made of the following raw materials in percentage by weight: 1-15% of acidic chelating agent, 0.05-5% of surfactant, 1-20% of alkaline chelating agent, 5-30% of oxidant, 0.1-1% of corrosion inhibitor, 0.1-2% of cosolvent and the balance of water; the acidic chelating agent is preferably selected from citric acid; the surfactant is preferably selected from sodium dodecyl benzene sulfonate; the alkaline chelating agent is preferably selected from ammonia or disodium ethylene diaminetetraacetate; the oxidant is preferably selected from hydrogen peroxide; the corrosion inhibitor is preferably selected from polybasic phosphate (A ester); and the cosolvent is preferably selected from benzoic acid or sodium benzoate. The invention has the beneficial effects of effectively clearing dirt such as ferrous sulfide in devices at normal temperatures and avoiding the spontaneous combustion of the ferrous sulfide and has the characteristics of low cost, large dirt clearing amount, good dirt clearing effect, non-toxicity, safety, simple and convenient operation, and the like.

The invention provides a red bayberry preservative based on Chinese herbal medicines, which is formed by multiple plant-derived traditional Chinese medicines and has the characteristics of convenient use, safety, non-toxicity and remarkable preservation effect. The preservative comprises extract clear liquid and red bayberry leaf extracts, wherein the extract clear liquid is prepared from 1-5% of clove, 1-4% of liquorice, 0.5-3% of honeysuckle, 0-2% of rhubarb, 1-5% of aloe, 1-5% of red bayberry wine and 76-95.5% of water; and the red bayberry leaf extracts are 1-6% of the total extract clear liquid by weight. The invention also provides a method for preparing the preservative and the application of the preservative in keeping the fruit and vegetables fresh.

The invention discloses an organic waste gas microemulsion absorbent, and a preparation method and application thereof. The absorbent comprises the following components in percentage by mass: 99.8 to 99.4 percent of water, 0.01 to 2 percent of surfactant, 0.05 to 2 percent of aid and 0.1 to 2 percent of inorganic salt. The preparation method comprises the following steps of: dissolving the surfactant with the water to obtain solution of surfactant; dissolving the aid and the inorganic salt in the water to obtain solution of aid; and mixing the solution of surfactant and the solution of aid and continuously stirring the mixed solution at the same time to obtain the organic waste gas microemulsion absorbent. The organic waste gas microemulsion absorbent is suitable for treating organic waste gases, and has the advantages of broad raw material sources, low cost, low saturated vapor pressure, non-toxicity, stable chemical properties, less corrosion to equipment, high organic waste gas removal efficiency, no need of pre-treating the waste gases, less investment, low running cost and the like; and the saturated absorbent can be recycled so as to realize the comprehensive utilization of resources.

The invention relates to a luminescent Lyocell fiber preparation method. The method includes the following steps: a rare-earth luminescent material and micro antioxidants occupying 1 to 20 percent of a fibrin pulp weight are added into NMMO water solution, and suspension is obtained after ultrasonic dispersing and mechanical stirring; the suspension and fibrin pulp occupying 5 to 15 percent of the NMMO weight are arranged into a reaction kettle, the mixture is swelled for 0.5 to 5 hours under temperature of 90 to 120 DEG C and a vacuum degree of minus 0.1 to minus 0.06 MPa, and then the mixture is stirred mechanically for dissolving to obtain a spinning stock-solution; then the spinning stock-solution is delivered to a spinning machine to obtain the required fiber through a dry-wet spinning process. The prepared fiber takes the fibrin fiber as a basic material and the fibrin is provided with hydrophilic hydroxide radical which can integrate with the rare-earth luminescent material in the fiber, and the fiber cannot be dropped off after washing with long service life. The solvent of the invention has the advantages to of non-toxicity and high-recycling rate and the fibrin fiber can be degraded without contamination to environment.