2170 results about "Chemistry" patented technology

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

The present invention relates to molecules, particularly polypeptides, more particularly immunoglobulins (e.g., antibodies), comprising a variant Fc region, wherein said variant Fc region comprises at least one amino acid modification relative to a wild-type Fc region, which variant Fc region binds FcγRIIIA and/or FcγRIIA with a greater affinity, relative to a comparable molecule comprising the wild-type Fc region. The molecules of the invention are particularly useful in preventing, treating, or ameliorating one or more symptoms associated with a disease, disorder, or infection. The molecules of the invention are particularly useful for the treatment or prevention of a disease or disorder where an enhanced efficacy of effector cell function (e.g., ADCC) mediated by FcγR is desired, e.g., cancer, infectious disease, and in enhancing the therapeutic efficacy of therapeutic antibodies the effect of which is mediated by ADCC.

The present disclosure relates to methods for isolating, amplifying, and/or analyzing nucleic acids in the presence of an anion exchange material by performing the isolation, amplification and/or analysis step in the presence of at least one anionic compound.

The invention discloses a guided tissue regeneration membrane. The membrane adopts a double-layer membrane structure and is characterized in that one layer is a compact layer prepared from biological fibers with longer degradation time, and the other layer is a potential loose layer prepared through mixing of biological fibers with different degradation time. After the potentialloose layer is implanted in a body, part of the biological fibers degrades quickly, so that the pore diameter of the membrane is increased, and ingrowth of cells is facilitated. The compact layer and the potential loose layer are connected through the same biological fibers with the longer degradation time, so that the double-layer membrane is free of splitting and fractures. The invention further discloses a preparation method of the guided tissue regeneration membrane as well as an application of the guided tissue regeneration membrane as a tissue repair product to tissue repair.

The invention discloses a method for preparing antithrombotic medicament apixaban. The method comprises the following steps of: obtaining a compound V by performing an amidation-cyclization two-step one-pot reaction on paranitroaniline serving as a raw material and a general purpose reagent 5-chlorine valeryl chloride under an alkaline condition; performing di-chlorination on the alpha-hydrogen of the V by using phosphorus pentachloride; performing a condensation-elimination reaction with excess morpholine to obtain a compound VI; reducing the VI into a compound VII by using sodium sulfide; performing the amidation-cyclization two-step one-pot reaction on the VII and the 5-chlorine valeryl chloride to obtain a key intermediate III; obtaining II by performing a [3+2] cyclization-elimination reaction on the III and another intermediate IV; and finally, obtaining I by performing aminolysis on the II. The method has the advantages that: process design is reasonable, expensive reagent is not used, reaction yield is high, raw material cost is low, and the method is simple and convenient to operate, has no harsh reaction condition, and is easy to perform large-scale production.

RO membranes using chlorinated water as a feed stream maybe protected from damage by the chlorine with a protective layer including reactive nitrogen which forms chloromines on the surface of the membrane that reduce chlorine penetration. This protective layer also provides substantial anti-fouling capabilities, whether used with a chlorinated or unchlorinated feed stream because the chloramines are anti-bacterial. Although chlorine is lost in use, the anti-fouling layer or coating can be recharged with additional chlorine without damaging the discrimination layer. The anti-fouling layer or coating may be advantageously used with Thin film composite, TFC, membranes for use in forward and reverse osmosis may include nanoparticles, monohydrolyzed and/or di-hydrolyzed TMC, and/or alkaline earth alkaline metal complexes or other additives.

PCT No. PCT/NZ97/00096 Sec. 371 Date Jan. 6, 1999 Sec. 102(e) Date Jan. 6, 1999 PCT Filed Jul. 25, 1997 PCT Pub. No. WO98/06407 PCT Pub. Date Feb. 19, 1998A veterinary composition containing an effective amount of praziquantel, an effective amount of at least one macrolide anthelmintic selected from the group comprising the avermectins and the milbemycins, and a suitable organic solvent selected from the group consisting of glycerol formal, ethyl lactate, benzyl alcohol and N-methyl-2-pyrrolidone and the like wherein the composition is suitable for administration to warm-blooded non-human animals. The composition may be a solution or a paste and may be administered to the recipient animal by injection, drench or as an oral paste. A method of treating endo- and ectoparasites in non-human animals is also claimed.

Disclosed is a gas barrier laminate film comprising at least one inorganic layer and at least one organic layer on a base material film, wherein the organic layer is a layer formed by ring opening polymerization of at least one kind of oxetanyl group-containing monomer. The gas barrier film can exhibit superior gas barrier property even if it is flexed and is preferably applicable in image display devices such as liquid crystal display devices and organic EL devices.

A polymer resin composition, a method for forming a pattern using the polymer resin composition, and a method for fabricating a capacitor using the polymer resin composition are disclosed. The polymer resin composition includes about 75 to 93 percent by weight of a copolymer prepared from benzyl methacrylate, methacrylic acid, and hydroxyethyl methacrylate; about 1 to 7 percent by weight of a cross-linking agent; about 0.01 to 0.5 percent by weight of a thermal acid generator; about 0.01 to 1 percent by weight of a photoacid generator; about 0.00001 to 0.001 percent by weight of an organic base; and a solvent.

A method for authenticating a product where the product is composed of a plurality of components is described. The method for authenticating the product comprises providing a liquid compound, e.g. paint, that comprises at least one invisible market, e.g. nucleic acid, in which the compound is associated with a first entity. The method then proceeds to apply the compound to the surface of the product at the juncture of at least two components. The method also comprises associating the application of the compound to the at least two components with the first entity.

Methods and apparatus for testing a sample for target molecules or chemicals. The apparatus includes a rotatable optical disc having a reaction chamber and having at least two groups of beads or micro-particles, the different group of beads having at least two different densities, sizes, shapes, and/or color, and each bead in a group having different probes attached thereto. A sample is added to the reaction chamber and the disc is rotated. The reaction chamber has a density gradient medium that causes beads of different densities to remain at different radial locations, depending on the density of the beads. The beads are then inspected by directing a beam of electromagnetic radiation onto the disc. The beam may be reflected from or transmitted through the disc. The amount, or presence, or absence of targets is determined by analyzing the signal returned from the beam. Related methods of performing assays and making the disc apparatus are provided.

The present invention provides continuous, non-hazardous sterilization and anti-microorganism protection by the generation of interactive, emission responsive surfaces, coatings, and coating systems.

The invention relates to a method for producing an amino acid tobacco-specific foliar fertilizer by using abandoned fur. The method comprises the following steps of: degreasing, drying and crushing various abandoned animal hair in slaughterhouses, hair in barber shops and various abandoned animal leather which are used as main raw materials; carrying out microbial fermentation, mainly Freund crack mould or other keratin decomposing bacteria fermentation; then decomposing and filtering to prepare a crude amino acid solution; and chelating the following components in parts by weight: 30-50 parts of crude amino acid solution, 15-18 parts of potassium sulfate, 15-25 parts of ammonium sulfate, 15-18 parts of potassium dihydrogen phosphate, 3-6 parts of humic acid potassium, 1.3-2 parts of trace elements, 0.3-0.5 part of surfactant, 0.5-1 part of chelating agent and 0.15-0.2 part of plant growth regulating agent. The tobacco-specific foliar fertilizer has the effects of promoting growth of tobacco roots, enhancing the absorption and utilization of tobacco on soil and the fertilizer, promoting lengthening, widening and thickening of tobacco, enhancing the ability of disease resistance, and improving the quality and yield of tobacco leaves.

The invention discloses a method for preparing an organic fertilizer by fermenting cow dung compost. According to the method, two times of composting fermentation are adopted and a composting promoter is added, so that the fermentation speed and the composting degree can be quickly increased; meanwhile, polyacrylamide, bentonite, cocoanut active charcoal and the like are added to reduce the moisture in cow dung and achieve the effect of deodorizing; sodium bicarbonate and triple superphosphate are added to generate carbon dioxide which can expand the cow dung, so that the permeability is increased; the early-stage fermentation temperature of the cow dung can be increased by the heat released from reaction, so that the activity of natural fermentation bacteria agents in the cow dung is improved; meanwhile, when the heat generated by the cow dung after a period time of composting is overhigh, the polyacrylamide absorbs the moisture in the cow dung to achieve the effect of reducing the temperature and to reduce turning times; after the fermentation is completed, the organic fertilizer prepared by drying and dewatering is high in fertilizer efficiency, durable and efficient, has the effects of retaining water, sterilizing and improving soil, and can promote the rapid growth of crops, thus improving the yield and the quality of the crops.

The invention is concerned with Gemini surfactant field. It relates to a kind of unbalance Gemini surfactant, in the chemistry structure, the m is 6 to 30, n is 0 to 30, and X is one or the mixture of some of H, CH3,C2H5,C3H7,Li+,Na+,K+ and NH4+, Y is one or the mixture of some of Li+, Na+,K+ and NH4+, and the m is 10 to 15, n is 0 to 15. It also relates to the produce and application of this surfactant. It has two different hydrophilic groups, one is sulfonate and the other is carboxylates or carboxylate. And the connecting group is phenoxy. This surfactant has all characters of Gemini surfactant, and the two hydrophilic groups have good water-solubility, water hardness stability, alkaline endurable and foam character for the industry, such as washing, weave and thrice oil extraction.

A pre-vaporization formulation for an e-vaping device includes a vapor former, optionally water, nicotine, nicotine bitartrate and an acid. The pH of the pre-vaporization formulation is between about 4 and about 6. The acid can include one or more of pyruvic acid, formic acid, oxalic acid, glycolic acid, acetic acid, isovaleric acid, valeric acid, propionic acid, octanoic acid, lactic acid, sorbic acid, malic acid, tartaric acid, succinic acid, citric acid, benzoic acid, oleic acid, aconitic acid, butyric acid, cinnamic acid, decanoic acid, 3,7-diemthyl-6-octenoic acid, 1-glutamic acid, heptanoic acid, hexanoic acid, 3-hexenoic acid, trans-2-hexenoic acid, isobutyric acid, lauric acid, 2-methylbutyric acid, 2-methylvaleric acid, myristic acid, nonanoic acid, palmitic acid, 4-pentenoic acid, phenylacetic acid, 3-phenylpropionic acid, hydrochloric acid, phosphoric acid and sulfuric acid.

Provided herein is a biocompatible implant for meniscus tissue engineering. Particularly, the biocompatible implant comprises a multi-layered crescent-shaped silk fibroin scaffold, in which each layer comprises distinct pore size and/or pore orientation, e.g., to mimic native meniscus complex architecture. Accordingly, the biocompatible implant can be used for repairing any meniscal defect or promoting meniscal regeneration in a subject.

The invention belongs to the technical field of polymer preparation, and especially relates to a preparation method of a thermoplastic polyurethane elastomer. The method comprises the following steps: 1, putting 1,4-cyclohexyl diisocyanate, polyethylene glycol adipate, 1,4-butylene glycol, a lubricant and a hydrolysis resistance agent in a blender, fully stirring, and fully plastifying in a high-temperature plastifying machine or a high-temperature internal mixer to obtain a thermoplastic polyurethane elastomer matrix; 2, processing an inorganic nanofiller by a silane coupling agent to obtain an modified inorganic nanofiller; and 3, dissolving the thermoplastic polyurethane elastomer matrix in tetrahydrofuran, adding the modified inorganic nanofiller, mechanically stirring, removing tetrahydrofuran, and carrying out film forming to obtain the thermoplastic polyurethane elastomer. Compared with the prior art, the method provided by the invention can effectively increase the heat resistance, the mechanical performances and the ageing resistance of the polyurethane elastomer on the premise that the comprehensive performances of the thermoplastic polyurethane elastomer do not decrease.

A composite structure having a number of thermoset resin containing elements and a number of thermoplastic elements and at least one interface between the thermoset resin containing elements and the thermoplastic elements is provided. The thermoset resin containing elements and the thermoplastic elements have functional groups at the interface which bond to each other when the composite structure is cured and the functional groups are independently selected from amines, carboxylic acids, acid anhydrides, oxiranes, and derivatives thereof in their non-bonded condition. Additionally, a blade having such a composite structure is provided.

The low carbon olefin and arene producing process includes the following steps: hydroprocessing material oil to obtain hydrogenated tail oil; catalytically cracking and separating catalytically cracked oil and gas to obtain C2=-C3=, C2o-C3o, C4-C5, naphtha, LCO, etc.; returning C4-C5 to catalytical cracking, returning LCO to hydroprocessing, selectively hydrogenating and solvent extracting naphtha to obtain raffinate oil and arene as one target product; steam cracking raffinate oil, hydrogenated C2o-C4o, hydrogenated naphtha and cracked C2o-C3o and separating reacted oil and gas to obtain C2=-C3=, C2o-C3o, C4-C5, naphtha, etc.; returning C2o-C3o to steam cracking, and returning C4-C5 to catalytical cracking. The producing apparatus includes hydroprocessing unit, atalytically cracking unit, steam cracking unit, selectively hydrogenating unit and solvent extracting unit. The present invention produces low carbon olefin with heavy material and has propylene yield over 30 wt% and co-produced toluene, etc.

The process for the treatment of ligno-cellulosic biomass comprises the steps of:

• • A) Soaking a ligno-cellulosic biomass feedstock in vapor or liquid water or mixture thereof in the temperature range of 100 to 210° C. for 1 minute to 24 hours to create a soaked biomass containing a dry content and a first liquid;
  • B) Separating at least a portion of the first liquid from the soaked biomass to create a first liquid stream and a first solid stream; wherein the first solid stream comprises the soaked biomass; and
  • C) Steam exploding the first solid stream to create a steam exploded stream comprising solids and a second liquid.

The method for preparing active carbon from bamboo raw material includes the following steps: (1). mao bamboo and waste produced by making bamboo wares are used as raw material, through cutting and screening, and screening bamboo scraps or screening bamboo scraps and making them form; (2). low temp. pyrogenic distillation carbonization of bamboo raw material in carbonization furnace, its pyrogenic distrillation carbonization temp. is 200-600 deg.C; (3). in the presence of micro oxygen placing the carbonized bamboo raw material into activating furnace and making activation by using superheatedsteam at high-temp., activating temp. is 400-850 deg.c; and (4) breaking or water washing activated active carbon, drying, sorting and sieving to obtain the invented product. Before carbonization thebamboo raw material can be soaked in mixed solution formed from zinc chloride and hydrogen peroxide or mixed solution formed from phosphoric acid and hydrogen peroxide. Its product not only possessesthe advantages of all the wooden active carbons, but also its methylthionine chloride decolouring power can be raised by 20%.

A method of quantifying glucose in a solution characterized in that electric potential measurement is conducted by potentiometry using a glucose dehydrogenase that requires a flavin compound as a coenzyme. It is preferable to carry out the quantification using a glucose dehydrogenase derived from a filamentous fungus, in particular derived from Aspergillus oryzae or Aspergillus terreus.

Aqueous cleaning solutions are provided for cleaning an integrated circuit device formed on a wafer, as well as methods of cleaning a wafer using the aqueous cleaning solution. In one aspect, an aqueous cleaning solution includes a low foam surfactant, a metal corrosion inhibitor, an acidic pH control agent or an alkali pH control agent, and water.