36results about How to "Avoid excessive viscosity" patented technology

Disclosed is a polymerization process comprising feeding a monomer as a raw material, a polymerization catalyst, and optionally, an inert medium to a tubular reactor in a pressurized state; permitting a part of the raw material monomer and the inert medium fed to the reactor to form a gas phase and the remainder to form a liquid phase, so that both of the gas phase comprising the raw material monomer and / or the inert medium and the liquid phase comprising the raw material monomer and / or the inert medium are present in the reactor, wherein said liquid phase may contain a resulting polymer as a solid, and so that a gas-liquid separated flow or a gas-liquid-solid separated flow has the gas phase that is continuous in the direction of flow is formed in the reactor; and polymerizing the raw material monomer while carrying the liquid phase by the gas phase flow, wherein the ratio of a volume flow rate of the liquid phase to a volume flow rate of the gas phase at the outlet of the reactor is 0.00001 to 100,000. According to the polymerization process, polymerization can be accomplished with excellent thermal efficiency and small power energy, and besides various polymers almost free from restrictions on their properties such as viscosities and melting points can be produced.

Disclosed is an inkjet print cartridge including an ink supply, a substrate having a plurality of individual ink ejection chambers defined by a barrier layer formed on a first surface of the substrate and having an ink ejection element in each of the ink ejection chambers, for ejecting drops of ink having a predetermined drop volume and drop velocity. The ink ejection chambers each have the same inlet channel length and are arranged in an array spaced so as to provide a predetermined resolution. A nozzle member having a plurality of ink orifices formed therein is positioned to overlie the barrier layer with the orifices aligned with the ink ejection chambers. An ink channel connects the reservoir with the ink ejection chambers. The inkjet print cartridge has several advantages of over previous printing systems in creating high quality images by using very small individual ink drops of low volume and high velocity. Highlight regions may be formed by using single low volume drops to form a dot. The individual drops are nearly invisible and can be used to form highlights with low graininess. As the density of the image increases, multi-drop dots are formed from two or more drops merging on the media to form a composite drop.

The present invention provides an external preparation and the method for produce the same, in which said external preparation comprises recombinant human growth hormone or recombinant human granulocyte macrophage colony-stimulating factor and pharmaceutical acceptable carriers. The present invention also relates to application and usage method in preparing medicaments for treatment of various lesions and ulcers, especially corneal lesions and corneal ulcers.

A device for delivery of biologic materials, comprising: a cartridge having at least two cylinder bores for fluids to be delivered, wherein each cylinder includes an exit port for a fluid, a plunger within each cylinder for pushing the fluids out of the cylinder, a housing adapted to receive the cartridge, wherein the housing or cartridge includes an adaptor to receive and lock a manifold that operably connects to the exit ports of the cartridge, at least two toothed rams, wherein each toothed ram is at least partially within a cylinder bore, a trigger connected to the housing, wherein the trigger includes a toothed drive rack, a toothed wheel assembly that cooperates with the toothed drive rack and with the toothed rams, as well as methods of making the device, methods of using the device to treat discs, kits including the device.

A viscosity modifying agent is added to a concrete mixture to give the concrete desirable rheological properties. The viscosity modifying agent is incorporated into a foam admixture before it is mixed into the concrete. Because the viscosity modifying agent is a component of the foam admixture, the viscosity modifying agent is dispersed in the aqueous film that forms the foam bubbles. The viscosity modifier in the foam bubbles gives the foam beneficial rheological properties. The viscosity modifier performs more efficiently when included in the foam bubbles as compared to being mixed directly into the concrete. The foam bubbles containing the viscosity modifier can be stabilized using a fluorochemical stabilizer, which is included in the foam admixture. The foam bubbles can be further stabilized with respect to cement mixtures by including a hydration stabilizing in the cement mixture.

A process for treating precious metal tailing slurries with Caro's acid, in which the Caro's acid is accompanied by reduced amounts of Caro's acid mist, is disclosed. The hot Caro's acid-containing mixture, formed by reaction of concentrated sulfuric acid and hydrogen peroxide, is quenched with water to reduce or eliminate the Caro's acid mist. The resulting cooled and diluted mixture is introduced into a precious metal tailings slurry to reduce the amount of cyanide values in the slurry.

The present invention relates to a compound characterized by the following formula:wherein each R1 is independently methyl or ethyl; and n 1 to 10. The compound is useful in preparing hydrophobically modified alkylene oxide urethane polymers, which are useful as rheology modifiers for coatings formulations.

The invention discloses a preparation method of modified vegetable oil. The method comprises the following steps: 1) modifying vegetable oil with methyl hydrogen-containing silicone oil: adding methylhydrogen-containing silicone oil into a flask provided with a constant-temperature feeding funnel and a condensation pipe, replacing air in the flask with nitrogen or inert gas, opening condensate water, adding a catalyst, vegetable oil and isopropanol, stirring, heating to 80-85 DEG C, keeping the temperature for 6-7 hours, and performing reduced pressure distillation to remove low-volatility substances, thereby obtaining hydrogen-containing silicone oil modified vegetable oil; and 2) ester exchange: adding methyl hydrogen-containing silicone oil modified vegetable oil prepared in the step 1) and (2R,3S)-2,3,4-trihydroxyl-3-methylbutyl dihydrogen phosphate into an organic solvent, heating to 95-105 DEG C within 30-40 minutes under a vacuum pressure of 200 mbar; making the mixture carry out reactions for 2-3 hours under stirring at a stirring speed of 800-1000 rpm, and then carrying out rotary evaporation at 50-60 DEG C to remove low-volatility substances. The lubricating oil preparedfrom the modified vegetable oil is good in chemical stability, has an extreme pressure anti-wear effect, does not need to be added with an extreme pressure anti-wear agent additionally, is economicaland environment-friendly, and avoids the problem of overlarge viscosity caused by using a large amount of auxiliaries.

A microemulsion consisting of water, peroxidic fluoropolyether carboxylate and oil is provided. When the microemulsion is used in homopolymerization, binary copolymerization or multi-component copolymerization of fluorine-containing olefin monomers, an emulsion with a low viscosity and a particle diameter of 30-200 nm can be obtained.

The invention relates to a HB(A-M) modified boron nitride nanotube reinforced PVA fiber and a preparation method thereof. The preparation method is as follows: PVA spinning solution containing HB(A-M) modified boron nitride nanotubes HB(A-M) modified boron nitride nanotubes reinforced PVA fibers were prepared by dry and wet spinning; HB(A-M) modified boron nitride nanotubes were obtained by dissolving HB(A-M) in In ionized water, add hydroxylated BNNT to it and carry out ultrasonic treatment to obtain; HB (A-M) is a hyperbranched polymer synthesized with AB as a monomer and dihydroxyethylamine as a core molecule, wherein AB is composed of mol The ratio is 1.0~1.2:1.7~2.4 aspartic acid reacts with dimethylolpropionic acid; the content of PVA in PVA spinning solution is 35~40wt%, and the viscosity of PVA spinning solution is 1500~2200Pa· s; the obtained HB(A-M) modified boron nitride nanotube reinforced PVA fiber has a fineness of 24.1-35.3 dtex, a breaking strength of 15.9-19.6 cN / dtex, and an elastic modulus of 376-389 cN / dtex. The invention effectively solves the problem of poor dispersibility of BNNT, and prepares the HB(A-M) modified boron nitride nanotube reinforced PVA fiber with excellent performance.

A kneader has a rotational conveyance member configured to knead the kneading material and convey the kneading material from an inlet toward an outlet by a rotational motion around an axis. The rotational conveyance member has a kneading zone configured to knead the kneading material, a first conveyance zone placed on an upstream side relative to the kneading zone and configured to convey the kneading material, and a second conveyance zone placed on a downstream side relative to the kneading zone and configured to convey the kneading material, and a conveyance force of the second conveyance zone is smaller than a conveyance force of the first conveyance zone in a case where the same conveyance object is conveyed.

The present invention relates to an oily dispersion of pigments for protection against UV radiation comprising, in a single base, zinc oxide and titanium dioxide added in the form of a powder, wherein the two pigments are dispersed in a single oily dispersing vehicle and the dispersion further comprises a single emollient vehicle. The invention also relates to a process for preparing said oily pigment dispersion. The dispersion of the present invention is useful to be added to cosmetic compositions, bringing about a faster way of producing compositions having a high sunshine protection factor, with a lower cost and more safety for the end products.

A lubricating oil composition for diesel oil vehicle comprises lubricating base oil, in which the composition further comprises triazine compound. The wheel rim power of the diesel oil vehicle is increased by 8-10%, the carbon smoke particulate discharge in tail gas is reduced by 30-50%, oil saving rate is high up to more than 10% and the oil change-over period of machine oil is 2-3 times of that of a conventional one; the discharge fully meets the standard, at the same time eliminates the bad smell and taste of the raw oil, the tail gas discharge of currently used vehicle or new vehicle meet the national standards by using the lubricating oil composition provided by the present invention.

A display media particle used for an information display panel having display media constituted of particles sealed between two substrates, at least one of which is transparent, for displaying information by moving the display media, is formed of a mother particle 32 made from materials including a base resin having child particles 33 added to a surface thereof. The base resin is a thermoplastic resin having a viscosity of no more than 1000 Pa·s at 260° C. and a shear rate at 122 s−1, and a heatproof temperature at no less than 430° C. Since optimal conditions of the viscosity and the heatproof temperature are specified, it is possible to round the resin effectively by a heat treatment for spheronization as a post-treatment after manufacturing.