35 results about "Substance.toxic" patented technology

The invention discloses an alcohol ester-12 production process which includes the steps: condensing isobutyraldehyde under alkaline conditions to generate 2,2,4-trimethyl-3-hydroxyl-1-valeraldehyde; continuing to perform polycondensation reaction on the isobutyraldehyde and the 2,2,4-trimethyl-3-hydroxyl-1-valeraldehyde generated by reaction to generate the alcohol ester-12. The production processhas the advantages that the process is continuous and simple, convenient to operate, small in occupied area and leas in investment, and products prepared by the process are stable. The alcohol ester-12 prepared by the method is a dihydric alcohol ester solvent with high boiling point and poly-functional groups, a novel environmental-friendly green chemical and mainly used for special coalescing agents of waterborne architectural coatings, and the waterborne architectural coatings made of the coalescing agents cannot emit substances toxic for people into an atmospheric environment.

The invention discloses a method for producing a bacteriostatic sole, lining or insole by using bacteriostatic agent. The method comprises the following steps: (1) the bacteriostatic agent is prepared to bacteriostatic agent water solution, and is selected from siberian solomonseal rhizome extract, scutellaria baicalensis extract, forsythia suspensa extract, honeySuchle flowers extract, coptis chinensis extract, radix isatidis extract and pepper extract or a mixture of several thereof; (2) the bacteriostatic agent water solution permeates into the sole, lining or insole; (3) the irradiation grafting is implemented; and (4) the moisture is dried to obtain the bacteriostatic sole, lining or insole. The method adopts the bacteriostatic agent which is harmless to people; the raw materials are cheap, easy to get, and easy to be degraded; and the environmental pollution from heavy metals and substances toxic for the people is avoided. The grafting process of the bacteriostatic agent adopts the mode of grafting after radiating electronic beams or plasma bodies in the sole, lining or the insole, so that the processing method is easy and feasible, no chemical pollution is generated, and energy conservation and environmental friendliness are achieved.

The invention provides a food-grade self-leveling temperature-resisting sealant and a preparation method thereof. The food-grade self-leveling temperature-resisting sealant is prepared from the following raw materials in parts by weight: 100 parts of alpha,omega-dihydroxyl polydimethylsiloxane, 0 to 10 parts of a plasticizer, 1 to 5 parts of filler, 2 to 10 parts of a crosslinking agent, 0.01 to 1part of an adhesion promoter and 0.01 to 2 parts of a catalyst. The food-grade self-leveling temperature-resisting sealant has the beneficial effects that medium and low viscosity polysiloxane is used as a polymer and white carbon black is used as the filler; the filler is added into a system before the crosslinking agent is added; hydroxyl is removed through a dehydration technology so that theself-leveling property of gel can be effectively improved and a gap between base materials can be automatically filled, and furthermore, bubbles are prevented from being remained and the waterproof sealing performance and the bonding strength are improved; the white carbon black is used as the filler so that the sealant has the advantages of high purity, good chemical stability, temperature resistance, yellowing resistance and no heavy metal; titanate is used as the catalyst; after the sealant is completely cured, substances toxic and harmful to human bodies are not remained and food requirements can be met.

The invention discloses an environmentally-friendly high-flame-retardant composite material used for a high-speed train air-conditioning duct, the composite material comprises a combined material and isocyanate, the mass ratio of the combined material: isocyanate is 1: 1.7, the composite material has high flame retardant properties, and is not easy to burn when meeting a fire, thus ensuring the safety of the whole vehicle and the safety of passengers, the composite material has the advantages of deformation resistance, even if the composite material is used for a long term, the composite material may not deform, and raw materials used in the composite material are environmentally friendly, so that no substances toxic and harmful to the human body may be released.

A shingle insert strip and method for eliminating and preventing growths on a shingled roof in which porous copper strips are installed with upper edges beneath the bottom edges course of shingles with the remaining portions exposed. A confined space is defined beneath a lengthwise hump in the exposed portions which is filled with a material, preferably in granular form which releases a substance toxic to the growths when rainwater runoff passes into the confined space and material and thereafter flows out.

A shingle insert and method for eliminating and preventing growths on a shingled roof in which a porous copper mesh is installed with an upper edge beneath a course of shingles with the remaining portions of the insert exposed. A confined space is defined beneath a lengthwise hump in the exposed copper strip portions which is filled with a growth toxic material, in solid or granular form which releases a substance toxic to the growths when rainwater runoff passes into the confined space and material and thereafter flows out down the roof.

The invention discloses a novel method for preparing a polyacrylate aqueous solution. The method comprises the following steps: respectively adding the following components in parts by mass into a reaction kettle: 100-500 parts of acrylate monomer, 100-300 parts of high-purity water and 200-400 parts of a base catalyst, and uniformly stirring and mixing; dropwise adding 100-300 mass parts of hydrogen peroxide having the concentration of 20-50 percent into the reaction kettle at a refluxing temperature, holding the temperature, initiating a carbon-carbon double bond to generate a free radical chain polymerization reaction by a hydroxyl radical (HO) or peroxy radical (H-O-O) mono initiation system generated during the decomposition of hydrogen peroxide under the catalysis of any of sodium hydroxide, potassium hydroxide, ammonia water and organic amine. The method has the advantages of stable process, convenience in operation, high reacting speed, high conversion rate, safe process flow and environmental friendliness; a polyacrylate aqueous solution prepared by utilizing the method does not contains substances toxic or hazard to the using environment such as sulfur, phosphorus and thelike, can meet the application requirement in the fields of drinking water treatment, electronic washing and the like, and is easy for large-scale industrial production.

The invention discloses an environment-friendly high-flame-retardant foaming material for an agricultural water ladle and a preparation method thereof. The environment-friendly high-flame-retardant foaming material is prepared from isocyanate and composition materials according to the mass ratio of 1 to 0.65; the composition materials are prepared from the following concrete ingredients in parts by mass: 35 to 45 parts of polyester 330, 25 to 35 parts of polyester 3350, 9 to 12 parts of polyester 400, 2.5 to 3.5 parts of silicon oil 158, 1.2 to 1.8 parts of catalysts HPF1, 1.0 to 1.5 parts of catalysts S20, 3 to 3.8 parts of water and 33 to 39 parts of flame retardants TCPP. After the use of the materials and the method, the flame-retardant performance of the prepared foaming materials is high; the prepared foaming materials cannot easily combust after meeting fire, so that the fireproof safety and the personnel safety are ensured; in addition, the prepared agricultural water ladle is light in weight, and is convenient to use; raw materials used for the foaming materials are all environment-friendly raw materials, so that substance toxic or harmful to human bodies cannot be released; the environment-friendly requirements are met.

The invention discloses an environmental-protection and high-flame retardation television shell composite material and a preparation method thereof. The composite material comprises polyether polyol 1, polyether polyol 2, polyester polyol, a plasticizer, a catalyst, tris(1-chloro-2-propyl)phosphate, water and isocyanate. The composite material has high flame retardation property and is uninflammable when meeting fire, so internal members of a television are protected, and the safety of properties is guaranteed. All raw materials used for preparing the above composite material in the invention are environmentally friendly raw materials, so the composite material does not release substances toxic or harmful to human bodies, and is healthy and harmless to the human bodies.

The invention discloses an environment-friendly high-flame-retardance television casing. The environment-friendly high-flame-retardance television casing is prepared from the ingredients in percentage: 16% to 19% of transparent material, 27% to 32% of environment-friendly material and 53% to 54% of fireproof acrylic, wherein the environment-friendly material is a hot-melt adhesive or pressure-sensitive adhesive, and the transparent material is vycor glass or quartz glass. The environment-friendly high-flame-retardance television casing is high in flame retardance and is not prone to combustion in case of fire exposure, so that internal components of a television are protected, and property safety is guaranteed. Meanwhile, the raw materials used are all environment-friendly raw materials, so that the environment-friendly high-flame-retardance television casing cannot release substances toxic and harmful to human bodies, is free of danger to human health and has the advantages of environmental protection, high flame retardance, dust prevention, sun-proofing and explosion proofing.

The invention discloses an environmental-protection and high-flame retardation storage cabinet sheet composite material and a preparation method thereof. The composite material comprises polyether polyol, polyester polyol, plant oil polyether polyol, triethanolamine, polyurethane silicone oil, a catalyst, tris(1-chloro-2-propyl)phosphate, water and isocyanate. The composite material has high flame retardation property and is uninflammable when meeting fire, so the safety of a storage cabinet and the safety of people's properties are guaranteed. All raw materials used for preparing the composite material in the invention are environmentally friendly raw materials, so the composite material does not release substances toxic or harmful to human bodies, and is healthy and harmless to the human bodies.

A substance delivery device includes a combustible paperboard strip and at least one substance toxic to insects and a perfume. The delivery device can take the form of a coil and includes a flexible backing sheet for supporting the combustible paperboard strip. The flexible backing sheet is not capable of combustion. Additionally, the material of the paperboard strip can include a combustion promoter.