444results about How to "Improve gelation" patented technology

A water soluble, biodegradable reverse thermal gelation system comprising a mixture of at least two types of tri-block copolymer components is disclosed. The tri-block copolymer components are made of a hydrophobic biodegradable polyester A-polymer block and a hydrophilic polyethylene glycol B-polymer block. The drug release and gel matrix erosion rates of the biodegradable reverse thermal gelation system may be modulated by various parameters such as the hydrophobic / hydrophilic component contents, polymer block concentrations, molecular weights and gelation temperatures, and weight ratios of the tri-block copolymer components in the mixture.

A water soluble, biodegradable reverse thermal gelation system comprising a mixture of at least two types of tri-block copolymer components is disclosed. The tri-block copolymer components are made of a hydrophobic biodegradable polyester A-polymer block and a hydrophilic polyethylene glycol B-polymer block. The drug release and gel matrix erosion rates of the biodegradable reverse thermal gelation system may be modulated by various parameters such as the hydrophobic / hydrophilic component contents, polymer block concentrations, molecular weights and gelation temperatures, and weight ratios of the tri-block copolymer components in the mixture.

A process for treating a composition containing a polyamine-epihalohydrin resin that has a low level of CPD-producing species and good gelation stability is disclosed. A polyamine-epihalohydrin resin is prepared with a ratio of epihalohydrin:amine of less than about 1.1:1.0; The resin is then subjected to a base treatment followed by an acid treatment resulting in a resin that has good gelation storage stability and produces low levels of CPD.

The present invention relates to methods of treating a subterranean formation with a composition including a compound made by a microorganism or a microorganism that can make the compound. Various embodiments provide methods of using compositions for treatment of subterranean formations including exopolysaccharides or microorganisms that can make exopolysaccharides under downhole conditions. In various embodiments, the present invention provides a method of treating a subterranean formation, including providing at least one exopolysaccharide by subjecting an extremophilic or extremotolerant microorganism to conditions such that the microorganism forms the exopolysaccharide, or by subjecting a microorganism genetically modified using an extremophilic or extremotolerant microorganism to conditions such that the microorganism forms the exopolysaccharide. The method can also include contacting a composition including the exopolysaccharide with a subterranean material downhole.

A pharmaceutic composition includes a pharmaceutically acceptable carrier, comprising a reverse thermally viscosifying polymer. The polymer includes a linear block copolymer, wherein at least one block comprises a poloxamer; and at least one block comprises a biocompatible polymer or oligomer, in an aqueous medium. The composition also includes an active agent which imparts a pharmaceutic or cosmetic effect. The composition viscosifies in response to an environmental stimulus. The composition is suitable for administration of the pharmaceutical agent across dermal, otic, rectal, vaginal, ophthalmic, esophageal and nasal mucosal membranes.

The invention relates to an implant obtained by assembling in vitro various elements in order to form a neo-organ which is introduced preferably in the peritoneal cavity of the recipient. The implant comprises a biocompatible support intended to the biological anchoring of cells; cells having the capacity of expressing and secreting naturally or after recombination a predetermined compound, for example a compound having a therapeutical interest; and a constituent capable of inducing and / or promoting the geling of said cells. The invention also relates to a kit for the preparation of the implant as well as to a new recombinant retroviral vector comprising a provirus DNA sequence modified in that the genes gag, pol and env have been deleted at least partially so as to obtain a proviral DNA capable of replication. The invention also relates to recombinant cells comprising the new retroviral vector.

The invention relates to a method for modifying a wheat protein by using a compound enzyme method. The method comprises the steps: adding water in the wheat protein as a raw material to blend wheat protein slurry, then adding neutral protease and glutamine transaminase, carrying out enzymolysis and enzyme deactivation under the conditions of a certain pH and certain temperature to obtain enzymolysis wheat protein slurry, freeze-drying, crushing, and sieving to obtain modified wheat protein powder. The gel property, the solubility and the viscosity of the modified wheat protein powder are respectively increased by 108.03 percent, 111.56 percent and 422.07 percent in comparison with those before modification. According to the method, the wheat protein is modified by adopting the compound enzyme method, the gel characteristic of the wheat protein is improved, the functional characters of the solubility, the emulsifying property, the foaming characteristic and the like are completely improved, the modified wheat protein with a relatively good processing property is obtained, and the comprehensive utilization of the wheat protein is promoted.

The invention discloses a preparing device of a shell-core functional material, which comprises a microfluidics integrated chip, a microfluidics drive device and a shell-core functional material collector; the microfluidics integrated chip comprises an outer phase input passage, a middle phase input passage, an inner phase input passage, a double emulsion generating micro structure, and a functional material output passage, and further comprises a bionic splitting array, a dielectrophoresis tuning micro unit, a liquid membrane curing micro unit, a microsphere external surface functionalized micro unit and a functional filler loading and homogenizing micro unit, which are arranged between the double emulsion generating micro structure and the functional material output passage. The preparing device can fully use the space of the microfluidics integrated chip, enables the chip to be compactly and reasonably configured and realizes the aim of fast and efficiently preparing the high quality shell-core functional material, thus greatly improving the preparing efficiency of the functional material under the conditions of ensuring degree of sphericity, concentricity and size uniformity of double emulsion, and realizing scaled and continuous production with excellent controllability.

The invention provides a preparation method for a starch bonding agent, which comprises the following steps of: performing crosslinking treatment on starch by adopting a crosslinker to form modified starch A, performing oxidation with sodium hypochlorite, esterification with butanedioic anhydride and treatment with a cationic etherifying agent on the starch to form modified starch B, and mixing the modified starch A and the modified starch B according to a certain proportion to form the modified starch bonding agent. The preparation method has the advantage of ensuring higher bonding power, firm bonding, high hardness of bonded paper products, high drying speed, low viscosity of paste, high flowability and wettability, convenience of coating, high storage stability and difficulty in gel production.

The invention discloses a method for accelerating fish curing and flavor ripeness and belongs to the technical field of application of combination of physical and biological processing technologies in food processing. The raw material of the method adopts fresh fish or frozen fish, the raw material of fish is made into cured fish by the steps of pre-processing, curing, biological ripeness, drying, physical ripeness, vacuum packaging and storage, the fish curing is accelerated by adopting the combination of adding trehalose and vacuum curing, the ripeness is accelerated by adopting the combination of flavor enzyme and microwave irradiation, and the physical and biological processing technologies are combined to be applied to the food processing. After the curing, flavor combination in the cured fish product after accelerated ripeness is doubled, and simultaneously, carbonyl compound and aroma compound esters which play important roles in cured fish flavor are generated, thus improving the sensory evaluation of the cured fish product obviously, such as sausage flavor, chewy property, taste and the like.

The invention relates to a preparation method of a polymer weak gel deep profile control agent. The preparation method comprises the following steps of preparing sodium carboxymethyl cellulose and distilled water into sodium carboxymethyl cellulose water solution of which the mass percentage is 1%-2%; adding acrylamide of which the mass is 2-8 times as great as that of the sodium carboxymethyl cellulose into the sodium carboxymethyl cellulose water solution, and then adding a cross-linking agent which accounts for 0.01%-2% of the total weight of the sodium carboxymethyl cellulose and the acrylamide; enabling nitrogen to enter into a closed system and isolating the air, and adding an initiating agent which accounts for 1%-2% of the total mass of the sodium carboxymethyl cellulose and the acrylamide; and discharging after carrying out constant-temperature reaction for 4-12 hours under the temperature of 30-60 DEG C. According to the preparation method disclosed by the invention, the acrylamide is grafted to the sodium carboxymethyl cellulose, polymer weal gel with a mesh structure is formed under the action of the initiating agent and the cross-linking agent, and a polymer weak gel system integrates the advantages of the sodium carboxymethyl cellulose and the acrylamide.

The invention discloses a phosphate-free water-retaining agent meat product, which is characterized by consisting of sodium alginate, edible calcium, livestock and poultry meat, seasoning accessory food and water, which respectively account for 0.01-8.0%, 0.01-8.0%, 0.1-70% and 1.0-10% by weight percent, and the rest is water. The invention overcomes the defects that a phosphate water-retaining agent has peculiar taste and influences the balance of calcium and phosphor of an organism, sodium alginate greatly improves the water-retaining property and the tissue state of meat products, so the acid resistant and heat resistant properties, water absorbability, adhesiveness, gel property and the like of the meat products are improved, the absorption of fat and water is promoted, the water interfacial tension is reduced, the emulsive oil drop is stabilized by the protein on the surface of the product to play the role of protection so as to prevent the emulsification state from being damaged, and thereby the invention achieves the purposes of water retention and oil retention.

The invention discloses health-care fish balls containing almonds. The fish balls are prepared from raw materials in parts by weight as follows: 200-220 parts of fresh silver carp flesh, 6-7 parts of egg white, 4-5 parts of potato starch, 30-33 parts of Chinese yams, 7-8 parts of pork fat, 3-4 parts of honey, 7-8 parts of fresh bayberries, 3-4 parts of sweet almonds, 1-1.2 parts of Lindernia ruellioides, 0.7-0.8 parts of immature orange fruits, 1.1-1.3 parts of Zinnia elegans, 0.8-1.0 part of saccharose, 0.5-0.6 parts of carrageenan, 0.4-0.5 parts of ginger, 4-5 parts of spices and proper amounts of table salt and water. According to the fish balls, adopted auxiliary materials such as the sweet almonds and the like have functions of moistening lung dryness and relaxing bowels, and adopted Chinese herbal medicines such as the Zinnia elegans and the like has functions of clearing heat and realizing diuresis.

A filtering method is directed to a wastewater of CMP process, which includes sub-micrometer particles suspended as colloid. The wastewater is filtered by a gel membrane formed on a surface of plastic filter. A coagulant or a pH adjuster is added to the wastewater so that the sub-micrometer particles are coagulated to form the gel membrane.

A preparation method of a jelly-type oily sludge profile control agent comprises the following steps: adding oily sludge and water into a stirrer to be stirred and pre-treated to enable the viscosity of pre-treated oily sludge to be 0.3-0.5 Pa.s; adding an emulsifier into the pre-treated oily sludge to enable oily sludge to be fully dispersed; sequentially adding a zwitterionic polymer, a cross-linking agent and a jelly promoter; uniformly stirring to obtain the jelly-type oily sludge profile control agent. The preparation method is simple in manufacture process, economical and effective and suitable for on-site construction conditions, and can effectively prevent oily sludge from environmental pollution; oily sludge in the profile control agent comes from an oil reservoir, has good compatibility with the oil reservoir, and causes less damage to the oil reservoir; the jelly-type oily sludge profile control agent is good in jelly forming performance, adjustable in jelly forming strength, excellent in stability after felly forming and high in plugging strength and erosion resistance.

To provide an aqueous coating composition which has a low content of an organic solvent, whereby a burden on an environment is small; in which an increase of the molecular weight, gelation, etc. are suppressed; which performs excellent storage stability and provides a coating film having good water permeability / water resistance.An aqueous coating composition which is a composition obtained by dispersing a fluorocopolymer (A) obtained by a solution polymerization method, in an aqueous medium, and which comprises a repeating unit (1) of fluoroolefin, a repeating unit (2) of a vinyl monomer or an allyl monomer, a repeating unit (3) of a vinyl monomer having a hydroxyl group bonded thereto or of an allyl monomer having a hydroxyl group bonded thereto, and a unit (4) of a vinyl monomer having a carboxylate group bonded thereto or of an allyl monomer, and which comprises a fluorocopolymer (A) wherein a proportion of the repeating unit (4) is from 0.4 mol % to less than 4 mol % based on the total repeating units, and an aqueous medium, wherein an amount of an organic solvent contained in the composition is from 0 to 1 mass %.

The invention discloses quick-frozen and fresh-keeping thousand-layer Tofu and a preparation method of the quick-frozen and fresh-keeping thousand-layer Tofu. The quick-frozen and fresh-keeping thousand-layer Tofu comprises the following components in parts by weight: 13-15 parts of soy isolate protein, 0.1-0.25 part of glutamine transaminase, 2-3 parts of cassava acetate modified starch, 5-8 parts of soybean oil, 0.3-0.6 part of aginomoto, 0.3-0.6 part of white sugar, 0.4-0.7 part of complex adhesive, 2.5-3.5 parts of duck egg white and 68-75 parts by weight of water. The quick-frozen and fresh-keeping thousand-layer Tofu disclosed by adopting the preparation method is prepared from the raw materials of the soy isolate protein, the glutamine transaminase, the cassava acetate modified starch, the soybean oil, the aginomoto, the white sugar, the complex adhesive and the duck egg white, keeps the original tender and fresh taste of Tofu, has a special tender, crisp, tasty, delicious taste, and has better elasticity and toughness, and strong soup water absorbing capacity; and regardless of frying, stir-frying, oil-frying, stewing or blending other seasonings, the quick-frozen and fresh-keeping thousand-layer Tofu is special in flavor and delicious in taste when being eaten.

The invention discloses a low sodium salt ham sausage and a preparation method thereof. The low sodium salt ham sausage is prepared from pork, starch, soy protein isolate, carrageenan, glutamine transaminage, sodium erythorbate, low sodium salt, seasoning, spices, a chromophoric reagent and water. The preparation method comprises the following steps: stirring and mixing the pork, the starch, the carrageenan, the sodium erythorbate, the low sodium salt, the seasoning, the spices and the chromophoric reagent; adding the soy protein isolate and the glutamine transaminage, chopping and mixing; adding water while chopping and mixing; filling the mixture into casing, and cooking; and cooling and storing. The prepared finished product has remarkably reduced content of sodium salt, and does not contain phosphate in favor of human health, thereby being a healthy product suitable for the hypertension crowd.

Compositions Including Relatively Low Reactivity Acids, Mixed with viscoelastic surfactants (VESs) and internal breakers may serve as drill-in fluids to open underground hydrocarbon reservoirs with carbonate contents of 10 wt % or above. The drill-in fluids have low viscosities in the drilling pipe. After the fluid flows out of the drill bit, the acids react with carbonates in the formation thereby increasing the pH of the drill-in fluids causing the VES to gel the fluid at the bottom of the hole and the downhole annulus between the drilling pipe and the formation rock. The viscosified drill-in fluid will reduce fluid loss and will carry no dissolved drilling debris to the surface. After drilling through the targeted formation, the internal breakers in the viscosified drill-in fluids will break down the fluids to permit their removal, and the well is ready to produce with very little or no near well bore damage.

The invention relates to a polysaccharide artificial blood vessel and a preparation method and application thereof. The polysaccharide artificial blood vessel is characterized in that the compact artificial blood vessel is prepared from water-insoluble polysaccharide fibers and colloidal solution which are prepared from polysaccharide; the polysaccharide is one or two of carboxymethylcellulose, hydroxy propyl cellulose, hydroxyethylcellulose, hyaluronic acid, alginate, heparin, chondroitin sulfuric acid, chitin, carboxymethyl chitin, hydroxypropyl chitin, hydroxyethyl chitin, carboxymethyl hydroxypropyl chitin, carboxymethyl hydroxyethyl chitin, hydroxypropyl hydroxyethyl chitin, sulfonated chitin, chitosan, carboxymethyl chitosan, hydroxypropyl chitosan, hydroxyethyl chitosan, carboxymethyl hydroxyethyl chitosan, carboxymethyl hydroxypropyl chitosan, hydroxypropyl hydroxyethyl chitosan, sulfonated chitosan or succinyl chitosan. The polysaccharide artificial blood vessel has the high compactness, stretchability, bendability, mechanical strength and flexibility, can be implanted into bodies during the operation of trauma repair, and is used as artificial blood vessels to replace hurt vessels and improve blood-supply condition.

The invention discloses a functional duck meat square leg and a preparation method of the functional duck meat square leg. The method comprises the steps of: slaughtering the duck, scalding hair, removing internal organs, cleaning, taking breast meat and leg meat, coating a mixture of nitrate, sodium isoascorbate and composite phosphate to pickle, adding a medlar juice and a walnut and lactoprotein mixed enzymatic solution, pig backfat, accessories, and glutamine transaminase and a lactic acid bacteria leavening agent, chopping, agitating and mixing uniformly, injecting in a mold way, preserving temperature and enzymolyzing, freezing and molding, demolding, packaging in vacuum, decocting and curing, sterilizing by microwave, and cooling to obtain the functional duck meat square leg which is rich in extracellular polysaccharide of lactic acid bacteria and polypeptide and amino acids. The method has the advantages that the amount of phosphate is reduced, and the emulsion stability, heat stability, water-retaining property and gel capacity of meat product are improved. The functional duck meat square leg is not only unique in flavor, but also has the functions of preventing oxidation, resisting angiotensin converting enzyme, and promoting calcium absorption and immune adjustment.

The invention provides a preparation method of composite modified starch, comprising: carrying out crosslinking by crosslinker sodium trimetaphosphate; and then esterfying by succinic anhydride. The invention also provides a composite modified starch prepared with the method and application thereof.

The invention discloses a high-temperature resistant secondary cross-linked gel profile control agent and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The profile control agent has good gelling property and high plugging strength and can resist high temperature of 150 DEG C, and the gelling strength and the gelling time can be adjusted. The high-temperature resistant secondary cross-linked gel profile control agent is mainly characterized by the secondary composite crosslinking process, that is, a plugging agent reacts with a first crosslinking agent under the ground condition to form flowable gel similar to weak gel so as to reduce filter loss of the plugging agent in oil deposit during the construction process and reduce the risk of blocking a low-permeability oil flow channel by the plugging agent; and a second crosslinking agent has a second crosslinking reaction under the high-temperature condition of an oil layer to form high-strength gel so as to effectively plug a high-permeability steam flowing channel, and accordingly, steam suction is controlled, and the sweep efficiency is improved. Gelling of the high-temperature resistant secondary cross-linked gel profile control agent is characterized in that micromolecules are inserted into organic macromolecular materials HPAM, and micromolecules and macromolecules mutually permeate, so that a gel system easily performs sizing; and meanwhile, temperature resistance, salt resistance, shear resistance and ageing resistance are enhanced, and the system performance can be well played.

The invention discloses a premix auxiliary and a preparation method thereof. The premix auxiliary comprises the following components in parts by weight: 10-20 parts of hydroxypropyl starch, 5-10 parts of starch, 0.5-2 parts of arabic gum, 0.5-5 parts of carrageenan, 0.5-2 parts of guar gum, 0.5-5 parts of xanthan gum and 0-5 parts of colorant. After a proper amount of water or glycerinum is added into the premix auxiliary to form a solution, and the viscosity is regulated to a proper range by production equipment according to practice to prepare capsules, so that the production procedures are greatly reduced, the requirement on process parameters is simple, the production time is greatly shortened, and the product quality is stable. Furthermore, the premix auxiliary disclosed by the invention does not contain a gelatin component, and the prepared capsule is a plant capsule with higher safety and better stability and is suitable for wide applicable crowd.

The invention relates to a pet health food and a preparation method thereof. The food materials are weighed according to weight percentage, and are 60 to 80 percent of glutin, 5 to 20 percent of fish collagen peptide powder, 5 to 20 percent of fish oil and 5 to 10 percent of compound vitamin, and the compound vitamin is animal-needed vitamin which includes vitamin A, vitamin B1, vitamin D, vitamin E, vitamin C and niacin; the materials are ground, mixed, then sent into a twin-screw extrusion-expansion machine, expanded and press-formed by a die, and after drying for shaping, picking, packaging and sterilization, the finished product is obtained. The pet health food has low fat content and high high-quality protein content, and is rich in minerals and vitamins, nutrition is balanced, and after being eaten, the pet health food can ensure that pets can become bright and active and that the fur can become brighter and more smooth, and also can increase appetite and promote the growth of muscles and bones. The shape of the pet health food is full, the internal texture is hard and dense, and thereby the pet health food can satisfy the chewing nature of pets and pets can grind and clean teeth.

Disclosed herein are novel peptide amphiphile molecules and compositions discovered to possess improved solubility in aqueous buffers which, in turn, facilitates purification required for pharmaceutical applications, particularly for in vivo administration to human patients. In addition, gels of such peptide amphiphile compositions are shown herein to possess unexpectedly superior gelation kinetics and rheological properties, including an increased mechanical stiffness, which better mimics the mechanical properties of natural central nervous system tissues.

The invention relates to a recombined braised tofu with seafood and a processing method thereof, belonging to the food science and technology field. The method comprises the following steps of: adding accessories, such as soy protein, collagen of fish skin and fish bone, kelp extractives, and the like by using fresh-water minced fillet as a main raw material; and recombining, mixing (chopping in vacuum for 30 min), stewing and forming at a high temperature (for 30 min), frying with oil in vacuum, quickly cooling and packaging in vacuum to make a polymer of protein and amylase and form a tofu-shaped, fresh, tender and smooth product with seafood taste, i.e. the recombined braised tofu with seafood, and storing the finished product in the environment at 0-4 DEG C. The recombined braised tofu with seafood, which is produced by applying the technology, is rich in nutrition, has excellent consistency, white color and luster, great and strong seafood taste and long product shell life, and is widely suitable for Chinese and western foods.

The present invention relates to tetrahydrofuran derivatives, a plasticizer composition containing said tetrahydrofuran derivatives, molding materials containing a thermoplastic polymer and such a tetrahydrofuran derivative, to a process for the production of these tetrahydrofuran derivatives and their use.

A personal care absorbent article, such as a sanitary pad or napkin, wound dressing, and the like having one or more layers of absorbent material treated with a red blood cell lysing agent and a gelling agent. The effect of combining a lysing agent that thins menses or other blood-containing bodily fluids with a gelling agent that thickens menses or other blood-containing bodily fluids is enhanced agglomeration and increased viscosity of the blood-containing bodily fluids that come in contact with the treated material.

The invention relates to a low-temperature anti-fingerprint surface treating agent for a galvanized steel sheet and an environment-friendly surface treated galvanized steel sheet of which the surface is treated by use of the surface treating agent. The surface of the galvanized steel sheet does not contain chromium and does not need to be dried at a high temperature, and a surface treatment film can be formed on the surface under a low-temperature drying condition; the manufacturing process is environment-friendly and low in energy consumption; a composition (namely the surface treating agent) containing specific water-based resin and phosphide, specific organic silicon compound, titanium compound, vanadium compound and oxidic polyethylene particles is applied to the surface of the galvanized steel sheet and then dried at a low temperature ranging from 50 to 75 DEG C, and consequently, the obtained surface treated galvanized steel sheet has excellent properties such as excellent alkali resistance, solvent resistance, corrosion resistance, fingerprint resistance, coating adherence and the like.