1386results about How to "Easily biodegradable" patented technology

Hydrogenated triglycerides having melting points above 50° C. are substituted for paraffin as a coating material for the surface of paper products and the resulting paper products have improved wet strength and moisture resistance in addition to being repulpable thereby providing a distinct environmental advantage over paraffin coated products.

The invention discloses a treatment method for high-concentration wastewater difficult to degrade. At the pretreatment stage, various pollution substances in wastewater are greatly degraded through the microelectrolysis reactor, Fenton reactor and multifunctional wastewater treatment machine combined mode, and meanwhile biodegradability of wastewater is regulated; at the biodegradation stage, most of pollution substances in wastewater can be treated and degraded by adopting the A2O and AO treatment process, conducting anaerobic, hypoxia and aerobiotic one-time biochemical and anaerobic and aerobiotic two-time biochemical treatment on wastewater and conducting ceaseless closed-loop inner circulation in the biochemical interior; at the after-treatment stage, by means of the multifunctional biological filter, multi-medium filtration and biological activated carbon adsorption combined treatment process, remaining pollution substances in wastewater can be degraded to the maximum extent or degraded after being adsorbed, and finally discharge water reaches the qualified emission target. The method is wide in application range, good in treatment effect and low in running cost, physical and biological treatment of high-concentration wastewater difficult to degrade is enhanced, and pollution of wastewater to the environment is reduced.

The invention relates to high-efficiency hydrate inhibitive environment-friendly drilling fluid, and particularly relates to the drilling fluid containing water, bentonite, hyamine dimeric surfactant, inorganic salt, sodium carboxymethyl starch, cationic polyacrylamide and solid anti-sloughing lubricating agent GFRH. The high-efficiency hydrate inhibitive environment-friendly drilling fluid can be used for exploiting continental or ocean oil-gas resources and can effectively inhibit the generation of hydrate; moreover, the components of the drilling fluid are small in environment harm, and the drilling fluid has the advantages of high efficiency and environmental protection.

The invention discloses a mesophilic sealing agent and a sealing technique of aluminum anodic oxide films and belongs to the technical field of the post sealing processing of the anodic oxide films of aluminum and aluminum alloys. The sealing agent of the invention is an aqueous solution that consists of alkali metals or salts of alkali earth metals, a complexing agent and a pH buffering agent; wherein, the concentration of the alkali metals or the salts of alkali earth metals is 5 to 15 g/L, the concentration of the complexing agent is 10 to 20 g/L,, the concentration of the pH buffering agent is 0 to 10 g/L, and the residual quantity is water; the pH value of the aqueous solution of the sealing agent is maintained between 5 and 6, the aluminum anodic oxide film is sealing processed by the sealing agent, the temperature of the aqueous solution of the sealing agent is 75 to 90 DEG C, and the soaking and sealing time lasts for 20 to 30 minutes. The sealing agent adopts the alkali earth metals or the salts of alkali metals with wide resource and low cost so as to replace heavy metal nickel salts or cobalt salts in the prior art and adopts the organic complexing agent that has biodegradability, low price and simple molecules so as to replace surface activating agents that contain giant molecules and benzene rings in the prior art, and consequently the aluminum anodic oxide film that is sealing processed by the sealing agent obtains excellent anti-pruina property, and the anti-corrosion and anti-pollution properties of the anodic oxide film of aluminum and aluminum alloys are generally improved.

The invention discloses a method for preparing aliphatic polycarbonates by catalyzing by the metal cyanide coordination catalyst. In a high pressure reactor, the metal cyanide coordination catalyst is utilized to catalyze epoxide and carbon dioxide body or solution copolymerization, wherein, the copolymerization temperature is 20-150 DEG C; the carbon dioxide pressure is 0.5-10MPa; the reaction time is 1-48h; the catalyst concentration is 1-100kg epoxide/g catalyst; the polymerization activity is more than 1.0kg of polymer/g catalyst; the weight-average molecular weight of the copolymer is more than 80 thousand; the molecular weight distribution is 1.5-4; the alternation degree of the copolymer is more than 90%; the cyclic carbonate by-product is less than 5wt%; the CO2 fixed rate of CO2/epoxypropane copolymer is more than 40wt%; and the CO2 fixed rate of CO2/cyclohexene oxide copolymer is more than 30wt%.

The invention discloses a water-based metal cutting liquid. The water-based metal cutting liquid is prepared from raw materials in percentage by mass as follows: 2%-7% of an antirust agent, 0.2%-2% of a corrosion inhibitor, 10%-20% of organic alkali, 20%-45% of an oleate lubricant, 2%-7% of amide, 2%-6% of an emulsifier, 4%-9% of an oiliness agent, 0%-5% of a coupling agent, 0%-3% of a softener, 1%-5% of a sterilizing agent, 0.1%-2% of a defoaming agent and the balance of water. The water-based metal cutting liquid provided by the invention contains no sulfur, phosphorus, chlorine or boric acid and is efficient, environment-friendly and recyclable.

The invention provides a pesticide synergist as well a preparation method and application thereof. The environment-friendly efficient type pesticide synergist is prepared by taking esterified plant oil, an emulsifying agent, soybean extract and a permeation solvent as raw materials. Particularly, the soybean extract, the efficient permeation green solvent, the emulsifying agent and the esterified plant oil are uniformly mixed according to a certain ratio to prepare the stable preparation. The pesticide synergist provided by the invention is suitable for being mixed with various preparation types of insecticides, sterilizing agents, herbicides, and a foliage fertilizer barrel, and has the remarkable properties of synergizing, saving labor, saving water and saving medicines. The pesticide synergist has good permeability and expansibility in a pesticide applying process.

The invention discloses a missible oil preparation using turpentine-based vegetable oil as a solvent and a preparation method thereof, relates to a pesticide preparation and provides the missible oil preparation using the turpentine-based vegetable oil as the solvent and the preparation method thereof. The missible oil preparation uses the turpentine-based vegetable oil extracted from plants as the solvent, does not contain any non-environmental-friendly organic solvents such as aromatic hydrocarbon and the like, has high environmental performance and is safe to produce and apply. The missible oil preparation comprises the following raw material components in percentage by mass: 0.5 to 60 percent of pesticide active ingredients, 0 to 15 percent of cosolvent, 5 to 25 percent of emulsifier and the balance of turpentine-based vegetable oil. The missible oil preparation using the turpentine-based vegetable oil as the solvent is prepared by mixing the pesticide active ingredients, the cosolvent, the emulsifier and the turpentine-based vegetable oil, homogenizing the mixture and cutting the obtained product.

The invention discloses an environmentally-friendly amine cationic collector and a using method thereof. The collector ZJ is ester group-containing quaternary ammonium salt cationic surfactant and has a plurality of alkyl groups, wherein an R alkyl group has 6 to 18 carbon atoms; an R1 alkyl group has 1 to 4 carbon atoms; the number of ester groups is 1 or two; and the number of the quaternary ammonium group is 1. The collector is obtained by esterification and quaternarization. As a hydrophobic chain has a carbonyl structure, the collector can hydrolyze easily into nonsurfactant fragments, and is a surfactant with high biodegradability, small toxicity and high performance. The collector is used in ore flotation for the first time and demonstrates high collecting capacity and selectivity.The collector forms fine and fragile foam that is low temperature resistant. The collector can be used under the condition that the pH value of ore pulp is 7 without corroding equipment. The preparation process of the collector is simple and easy in operation. And the collector is easy to biodegrade and is environmentally-friendly.

A porous material used as the scaffold in tissue engineering is prepared from the sericine and silk extract extracted from the silk of silkworm or tussah through proportionally mixing, fast stirring at a certain temp. freeze drying to shape porous block or membrane, and injecting the slowly-releasing microgel of cell growth factor into the pores. Its advantages are high biocompatibility and adjustable biodegradation speed.

The invention provides a metal salt-free sealing agent for an aluminum alloy anodic oxide film, belonging to the technical field of aluminum alloy anodic oxide film post treatment. The sealing agent of the invention is prepared by water solution composed of 1.0-10g/L of a hydration accelerator, 0.01-2g/L of a wetting agent, 0.01-3g/L of an ash inhibitor and 1-15g/L of a pH buffering agent, wherein the pH of workpiece fluid is 5.5-6.5, the operating temperature is 70-90 DEG C, and the sealing speed is 1.0-2.0min/um. The metal salt-free sealing agent creatively adopts organic compounds which are easily subject to biodegradation, does not contain any metal ions of nickel, cobalt, magnesium, calcium, lithium and the like as well as fluorinions, and obtains satisfactory sealing effect of the nano-pores of the aluminum alloy anodic oxide film by virtue of the scientific and coordinated component formula of the water solution; the aluminum alloy anodic oxide film obtained by seal treatment through the sealing agent has the advantages of good corrosion resistance, capability of meeting the requirements of GB 14952.1-94, good light-protection and color-protection properties of a film layer, no ash and pruina, no water stain after drying as well as light flowing color and small color difference change in case of sealing the organic dyeing film; and the metal salt-free sealing agent is widely applicable to sealing treatment of an original-color anodic oxide film, an electrolytic coloring anodic oxide film, a hard oxide film and a dyeing anodic oxide film.

The present invention includes processes to create wormholes in carbonate reservoirs by contacting a formation with a solution comprising glutamic acid N,N-diacetic acid (GLDA) and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention also includes processes to remove wellbore damage in a carbonate reservoir by contacting a damaged zone of the carbonate reservoir with a solution comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention further includes solutions comprising a salt and further comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof.

The invention belongs to the field of daily chemicals, and specifically relates to an antibacterial liquid laundry detergent, a preparation method and applications thereof. The antibacterial liquid laundry detergent comprises the following components in percentage by weight: 0.3 to 0.9% of composite antibacterial agent, 5 to 20% of anionic surfactant, 5 to 20% of nonionic surfactant, 0.05 to 0.5% of fluorescent whitening agent, 0.05 to 5% of chelating agent, 0 to 1% of pH adjuster, 0.1 to 1% of essence, and the balance being water. The composite antibacterial agent is prepared according to a mass ratio of 1:1-5 of nano silver to a plant origin antibacterial agent. The nano silver and plant origin antibacterial agent can generate a synergetic effect, the antibacterial activity is largely improved, and thus the bacteria can be effectively removed. Furthermore, the raw materials are easily available, the preparation technology is simple, the cost is low, and the preparation method can be applied to industrial production. The prepared antibacterial liquid laundry detergent is nontoxic, nonirritant, and environment-friendly and can be easily degraded by organisms.

Compositions comprising an alkanesulfonic acid and an organic nitrogenous base, and related methods of use.

The composite flocculant for treating printing and dyeing effluent consists of natural high molecular water soluble chitosan and polyaluminium chloride. The usage of the composite flocculant in treating printing and dyeing effluent includes regulating effluent to pH 6-8, and throwing composite flocculant in the amount of chitosan in 1-2 ppm and polyaluminium chloride in 100-250 ppm to result in printing and dyeing effluent decolorizing rate up to 91 %. The composite flocculant of the present invention has simple compounding process, easy use, low cost, small thrown amount, excellent decolorizing performance, fast deposition, small sludge amount, easy biodegradation, less secondary pollution of water and thus wide application foreground.

The invention relates to a silk afterfinishing compound softening agent and a preparation method. The softening agent is nontoxic, nonirritating, very low in yellowing possibility, good in re-wettability, biodegradable, and completely harmless to an environment. The method comprises the steps that required water temperature is selected between 0 DEG C and 100 DEG C according to used different quaternization raw materials; 1-30% of ester quaternary ammonium salt is added to water, and stirred; and then 1-30% of hydrophilic amino silicone oil is added and stirred uniformly after ester quaternary ammonium salt is completely dissolved or dispersed in the water and forms a uniform white viscous emulsion. The softening agent has the advantages that 1, the softening agent adopts raw animal or plant synthetic chemicals as main components of the softening agent, and is completely nontoxic, nonirritating, very low in yellowing possibility, and good in re-wettability, and 2, the softening agent is biodegradable and completely harmless to the environment, and is an ideal silk fabric afterfinishing softening agent.

The invention relates to a preparing method for self-healing polysaccharide hydrogel. The preparing method comprises the steps that cellulose is added into ionic liquid to be dissolved, the mixture is then cooled to the room temperature, and a cellulose solution is obtained; the cellulose solution is heated and dripped with tert-butyl acetoacetate under the protection condition of introducing nitrogen, a reaction is carried out at the constant temperature, the solution is then cooled to the room temperature, purified and subjected to vacuum drying, and acetoacetic acid cellulose is obtained; under the room temperature, a chitosan solution is added into the acetoacetic acid cellulose solution, oscillated and mixed, and the self-healing polysaccharide hydrogel is obtained. The polysaccharide hydrogel prepared through the method has the self-healing performance, and has the pH responsiveness at the same time. The preparing method is simple in process, rich in raw material and suitable for modification of most polysaccharide derivatives; meanwhile, due to the good biocompatibility of cellulose and chitosan, the prepared polysaccharide hydrogel has good application prospects in the fields such as tissue engineering repair, medicine controlled release and biological bionics.

The invention relates to nonyl alcohols with a low degree of branching and derivatives produced using them. In particular the present invention relates to mixture of primary nonyl alcohols in which at least 80% of the alkyl chains are linear and at least 15% of the alkyl chains are branched at the 2-carbon position and its derivatives. The low degree of branching produces derivatives that are more elongated and less bulky that similar derivatives produced with more highly branched alcohols.