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609 results about "Cloud point" patented technology

In the petroleum industry, cloud point refers to the temperature below which wax in diesel or biowax in biodiesels forms a cloudy appearance. The presence of solidified waxes thickens the oil and clogs fuel filters and injectors in engines. The wax also accumulates on cold surfaces (producing, for example, pipeline or heat exchanger fouling) and forms an emulsion with water. Therefore, cloud point indicates the tendency of the oil to plug filters or small orifices at cold operating temperatures.

Isomerization/dehazing process for base oils from Fischer-Tropsch wax

A method for producing lubricant base oils is provided comprising the steps of: (a) separating a feedstock into a light lubricant base oil fraction and a heavy fraction; (b) hydroisomerizing the fractions over a medium pore size molecular sieve catalyst under hydroisomerization conditions to produce an isomerized light lubricant base oil fraction having a pour point less than or equal to a target pour point of the lubricant base oils and an isomerized heavy fraction having a pour point of equal to or greater than the target pour point of the lubricant base oils and a cloud point greater than the target cloud point of the lubricant base oils; and (c) dehazing the isomerized heavy fraction to provide a heavy lubricant base oil having a pour point less than or equal to the target pour point of the lubricant base oils and a cloud point less than or equal to the target cloud point of the lubricant base oils.
Owner:CHEVROU USA INC

Process for isomerization dewaxing of hydrocarbon streams

A process for isomerization dewaxing of a hydrocarbon feed which includes contacting the hydrocarbon feed with a large pore size, small crystal size, crystalline molecular sieve and an intermediate pore size, small crystal size, crystalline molecular sieve to produce a dewaxed product with a reduced pour point and a reduced cloud point. In a preferred embodiment, the feed is contacted with the molecular sieves sequentially, first with the large pore sieve followed by the intermediate pore sieve.
Owner:EXXON RES & ENG CO

Automatic spraying system and automatic spraying method based on point cloud and image matching

The invention provides an automatic spraying system based on point cloud and image matching. The automatic spraying system comprises a three-dimensional scanning module, an automatic trajectory planning module, a visual matching module and a spraying module. The three-dimensional scanning module is used for scanning a spraying object and acquiring a point cloud model according to scanned three-dimensional point cloud data; the automatic trajectory planning module is used for planning spraying trajectories in a point cloud space; the visual matching module is used for acquiring a transformational relation between a point cloud coordinate system and a spraying robot coordinate system; the spraying module is used for automatically spraying the spraying object. The automatic spraying system has the advantages that an algorithm is planned automatically according to a robot spraying path of the point cloud coordinate system, the point cloud coordinate system is correlated with the robot coordinate system according to the cloud point and image matching algorithm, and accordingly, automatic spraying of the spraying object is realized; on the basis of guaranteeing spraying efficiency, the spraying quality is improved greatly, calculation quantity for trajectory planning is reduced, and trajectory planning quality is improved.
Owner:CHONGQING UNIV

Ultra-high loading glyphosate concentrate

ActiveUS20090318294A1Much cycle timeMuch efficient productionBiocideDead animal preservationHigh concentrationActive agent
This invention relates to a storage stable, aqueous, herbicidal formulation containing an ultra-high concentration of glyphosate in the isopropylamine, potassium or mixed salt form in combination with a surfactant system, to a method of making the formulation, and to a method of treating unwanted vegetation employing the formulation. The surfactant system employed in the concentrate comprises dialkoxylated alkylamine, water miscible solubilizer and amine oxide. The surfactant system unexpectedly permits the formulation of storage stable, ultra-high loaded aqueous glyphosate salt concentrates possessing high or no cloud points.
Owner:STEPAN COMPANY

Process for fluid phase in-line blending of polymers

A process for fluid phase in-line blending of polymers. The process includes providing two or more reactor trains configured in parallel and a separator for product blending and product-feed separation; contacting in at least one of the parallel reactor trains olefin monomers having three or more carbon atoms, catalyst systems, optional comonomers, optional scavengers, and optional inert diluents or inert solvents, at a temperature above the solid-fluid phase transition temperature of the polymerization system and a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system and less than 1500 MPa; forming a reactor effluent including a homogeneous fluid phase polymer-monomer mixture in each parallel reactor train; combining the reactor effluent from each parallel reactor; passing the combined reactor effluent through the separator; maintaining the temperature and pressure within the separator above the solid-fluid phase transition point but below the cloud point pressure and temperature to form a fluid-fluid two-phase system including a polymer-rich blend phase and a monomer-rich phase; and separating the monomer-rich phase from the polymer-rich blend phase. The separated monomer-rich phase is recycled to the polymerization reactor bank. The polymer-rich blend phase is conveyed to a downstream finishing stage for further monomer stripping, drying and/or pelletizing to form a polymer product blend.
Owner:EXXONMOBIL CHEM PAT INC

Polymer production at supercritical conditions

This invention relates to a process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally diluent or solvent, at a temperature above the cloud point temperature of the polymerization system and a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system, where the polymerization system comprises any comonomer present, any diluent or solvent present, the polymer product, where the olefins having three or more carbon atoms are present at 40 weight % or more, wherein the metallocene catalyst compound is represented by the formula: where M is a transition metal selected from group 4 of the periodic table; each R1 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and functional group, and any two R1 groups may be linked, provided that if the two R1 groups are linked, then they do not form a butadiene group when M is Zr; each R2 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and two or more R2 groups may be linked together to form an aliphatic or aromatic ring; R3 is carbon or silicon; R4 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group; a is 0, 1, or 2; R5 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, R4 and R5 may be bound together to form a ring, and R5 and R3 may be bound together to form a ring; b is 0, 1, or 2; R6 is carbon or silicon; and R4 and R6 may be bound together to form a ring; each R7 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group; each R8 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group, and R7 and R8 may be linked together to form an aliphatic or aromatic ring; each R9 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group, and two R9 groups may be linked together to form a ring, R9 and R8 may be linked together to form a ring, R9 and R16 may be linked together to form a ring, R9 and R11 may be linked together to form a ring; c is 0, 1 or 2; R10 is -M2(R16)h- where M2 is B, Al, N, P, Si or Ge, h is an integer from 1 to 2, such that the valence of M2 is filled, and R16 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and two R16 groups may be linked together to form a ring; d is 0, 1, or 2; each R11 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group, and two R11 groups may be linked together to form a ring. R11 and R8 may be linked together to form a ring. R11 and R16 may be linked together to form a ring; e is 0, 1, or 2; where the sum of c, d, and e is 1, 2 or 3; R12 is carbon or silicon; R13 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and R13 and R14 may be bound together to form a ring, and R13 and R15 may be bound together to form a ring, when g is 0; f is 0, 1, or 2; R14 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and R14 and R12 may be bound together to form a ring, when f is 0; g is 0, 1, or 2; and R15 is carbon or silicon.
Owner:EXXONMOBIL CHEM PAT INC

Apparatus and method for finding visible points in a cloud point

The subject matter discloses a method of determining whether a point in a computerized image is visible from a viewpoint; said image is represented as a point cloud, the method comprising: performing inversion on a the vicinity of the point thus creating a computerized inversed objects each point in the vicinity of the point is related to a parallel point in the computerized inversed object and obtaining a convex hull of the inversed object; the point is likely to be visible from the viewpoint in case it belongs to the point set composing the convex hull. The method is also useful for shadow casting and for determining the location of an image-capturing device within a volume
Owner:TECHNION RES & DEV FOUND LTD

Pharmaceutical formulation of omeprazole

PCT No. PCT / SE98 / 00922 Sec. 371 Date Jun. 8, 1998 Sec. 102(e) Date Jun. 8, 1998 PCT Filed May 18, 1998 PCT Pub. No. WO98 / 53803 PCT Pub. Date Dec. 3, 1998An enteric coated oral pharmaceutical formulation comprising as active ingredient a compound selected from the group of omeprazole, an alkaline salt of omeprazole, the (-)-enantiomer of omeprazole and an alkaline salt of the (-)-enantiomer of omeprazole, wherein the formulation comprises a core material of the active ingredient and optionally an alkaline reacting compound, the active ingredient is in admixture with a pharmaceutically acceptable excipient, such as for instance a binding agent, and on said core material a separating layer and an enteric coating layer. A hydroxypropyl methylcellulose (HPMC) of low viscosity with a specific cloud point is used in the manufacture of pharmaceutical formulations. Furthermore, the application describes the processes for their preparation and the use of the claimed formualtions in medicine.
Owner:ASTRAZENECA AB

Transfer ink jet recording aqueous ink

An aqueous ink for a transfer ink jet recording method including applying to an intermediate transfer member a reaction liquid which forms an increased viscosity ink image by coming into contact with a coloring material in the ink, applying the ink to the intermediate transfer member by an ink jet device to form an intermediate image, and bringing a printing object into contact with the intermediate transfer member to transfer the image to the object. The aqueous ink contains a coloring material which is a polymer dispersion pigment dispersed in the aqueous medium with a polymer having a hydroxyl group in its structure as a dispersant, a nonionic surfactant which is an alcohol ether surfactant a 1% aqueous solution of which has a cloud point of 33° C. or less and which has a C4-C30 alkyl group and a propyleneoxy group in its structure, and an aqueous medium.
Owner:CANON KK
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