子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | HIGH-TEMPERATURE SPRAY DRYING PROCESS AND APPARATUS | US13825770 | 2011-09-22 | US20130193598A1 | 2013-08-01 | Dwayne T. Friesen; David D. Newbold; John M. Baumann; Devon B. DuBose; Douglas L. Millard |
| The process comprises delivering a spray solution comprising at least one solute in a solvent to a spray-drying apparatus, using a flash nozzle to atomize the spray solution into droplets within the spray-drying apparatus to remove at least a portion of the solvent from the droplets to form a plurality of particles, and collecting the particles. The spray solution is directed to a heat exchanger, thereby increasing the temperature of the spray solution to a temperature T2, wherein T2 is greater than T1. The flash nozzle comprises a central tube through which the spray solution is delivered and an outer tube through which a sweep gas is delivered. The central tube may have a first outer diameter at an inlet and a second outer diameter at an outlet, wherein the first outer diameter is greater than the second outer diameter. | ||||||
| 102 | PELLETIZING | US13197341 | 2011-08-03 | US20120032006A1 | 2012-02-09 | Peter J. Mueller; Richard H. Fetter; Robert A. Hewitt; Jamie Allen Chomas; Jason Bradley Forgash |
| A continuous length of material of non-circular cross-section is pelletized to form discrete bits, by feeding the material to a cutting wheel with shaped cutters that form non-planar bits having non-circular axial projections and that are aligned with the material. The material is fed so as to maintain a rotational orientation with respect to the cutters, and so as to avoid buckling. Multiple banks of strands of material are severed simultaneously, thereby producing high volumes of shaped bits that are useful as filling and as filter material, and as friction-enhancing additives. | ||||||
| 103 | PROCESS FOR PRODUCING BIOPOLYMER NANOPARTICLES | US12377501 | 2007-08-14 | US20110042841A1 | 2011-02-24 | Robert H. Wildi; Edward Van Egdob; Steven Bloembergen |
| A process for producing a biopolymer nanoparticles product is disclosed. In this process, biopolymer feedstock and a plasticizer are fed to a feed zone of an extruder having a screw configuration in which the feedstock is process using shear forces in the extruder, and a crosslinking agent is added to the extruder downstream of the feed zone. The biopolymer feedstock and plasticizer are preferably added separately to the feed zone. The screw configuration may include two or more steam seal sections. Shear forces in a first section of the extruder may be greater than shear forces in an adjacent second section of the extruder downstream of the first section. In a post reaction section located after a point in which the crosslinking reaction has been completed, water may be added to improve die performance. | ||||||
| 104 | Method and device for producing granulates from intermediate products of thermo-plastic polyesters and copolyesters | US10018462 | 2001-02-12 | US06858167B2 | 2005-02-22 | André Matthaei; Peter Locker; Andreas Ecker; Ralf Müller |
| The invention relates to a process and an apparatus for forming molten drops of precursors of thermoplastic polyesters or copolyesters as molten monomer, oligomer, monomer/glycol mixture or after partial polycondensator [sic] and melting to give a molten precursor, in which the precursor formed into drops is introduced into a gaseous medium, and the gaseous medium, after entry of the precursor formed into drops into the gaseous medium, accelerates the crystallization process by holding the drop-form precursor at a temperature above 100° C. and below its melting point for a limited time until crystallization of the drop at the surface of the precursor is complete. To this end, the apparatus has a fall tower, through which the gaseous medium flows in countercurrent from bottom to top, while the drops fall in the vertical direction from top to bottom into a collecting funnel with a precrystallized surface. | ||||||
| 105 | Apparatus and method for producing porous polymer particles | US10343354 | 2001-08-03 | US20050006496A1 | 2005-01-13 | Barry Partington; Ann Partington; Josee Ethier |
| An apparatus and method for producing porous polymer particles is disclosed. The apparatus includes a rotating atomizer wheel (39) onto which a uniform thin layer of a polymer may be applied via a distributor (40), followed by the movement of the polymer to the periphery of the wheel due to centrifugal force and the subsequent release of free flying particles at the periphery of the wheel. The apparatus further includes a catch tray (14) to collect the porous polymer particles produced and an enclosure defining a partition between an interior environment and an exterior environment of the apparatus. The enclosure includes an aperture allowing a gaseous exchange between the interior and exterior environments. | ||||||
| 106 | Controlled release polyacrylic acid granules and a process for preparing the same | US10403721 | 2003-03-31 | US06762267B2 | 2004-07-13 | Daniel James Adams; David William Weaver; William R. Wilber; Jian-Hwa Guo; Edward S. Greenberg |
| The present invention pertains to a method for forming polyacrylic acid granules and granules formed therefrom wherein the granules are flowable, have an increased bulk density relative to the as polymerized polyacrylic acids, and a low amount of dust which is generally characterized herein as particles which pass through a 325 mesh screen. The granules formed by the method of the present invention can be used to prepare controlled release tablets, especially controlled release pharmaceutical tablets. The controlled release properties of the tablets formed from granules prepared according to the present invention are unexpectedly better than tablets prepared from granules formed by other known granulation methods. | ||||||
| 107 | Controlled release polyacrylic acid granules and a process for preparing the same | US10034011 | 2001-12-20 | US06596844B2 | 2003-07-22 | Daniel James Adams; David William Weaver |
| The present invention pertains to a method for forming poly-acrylic acid granules and granules formed therefrom wherein the granules are flowable, have an increased bulk density relative to the as polymerized polyacrylic acids, and a low amount of dust which is generally characterized herein as particles which pass through a 325 mesh screen. The granules formed by the method of the present invention can be used to prepare controlled release tablets, especially controlled release pharmaceutical tablets. The controlled release properties of the tablets formed from granules prepared according to the present invention are unexpectedly better than tablets prepared from granules formed by other known granulation methods. | ||||||
| 108 | Method of making polymer powders and whiskers as well as particulate products of the method and atomizing apparatus | US08895645 | 1997-07-17 | US06171433B2 | 2001-01-09 | Joshua U. Otaigbe; Jon M. McAvoy; Iver E. Anderson; Jason Ting; Jia Mi; Robert Terpstra |
| Method for making polymer particulates, such as spherical powder and whiskers, by melting a polymer material under conditions to avoid thermal degradation of the polymer material, atomizing the melt using gas jet means in a manner to form atomized droplets, and cooling the droplets to form polymer particulates, which are collected for further processing. Atomization parameters can be controlled to produce polymer particulates with controlled particle shape, particle size, and particle size distribution. For example, atomization parameters can be controlled to produce spherical polymer powders, polymer whiskers, and combinations of spherical powders and whiskers. Atomizing apparatus also is provided for atoomizing polymer and metallic materials. | ||||||
| 109 | Agglomerating and drying apparatus | US267192 | 1999-03-12 | US6143221A | 2000-11-07 | I. Macit Gurol |
| Apparatus for agglomerating and drying particulate material, including an agglomerator (4) for forming and discharging wet granules of a predetermined size or smaller, and a dryer (12). The agglomerator utilizes a rotary blade assembly (100) that repeatedly impacts and cuts the wet mixture of material to be agglomerated, which is forced radially outward through the blade assembly under centrifugal and air pressure force. Wet granules pass through an annular screen (104) where they reach a predetermined maximum size. The dryer has an inlet (50) for wet granules from the agglomerator, an outlet (78) for granules having passed through the dryer, and one or more baffles (64) within the dryer defining a spiral path through which the granules pass from the dryer inlet towards the dryer outlet. The baffles are configured such that their pitch increases with distance from the dryer inlet, whereby the cross-sectional area of the spiral path increases toward the dryer outlet. | ||||||
| 110 | Continunous process for preparing polytetrafluoroethlene wet powder | US537329 | 1995-10-02 | US5747640A | 1998-05-05 | Tetsuya Higuchi; Shunichi Nomura; Shigeru Ichiba; Hiroshi Yamaguchi; Masaomi Goromaru; Akira Watanabe; Kazuhiro Takeda; Mikio Morita; Kazuhisa Fujita; Yasuyuki Moriyama |
| A process for continuously preparing a wet powder of PTFE, comprising the step of continuously slurrying a PTFE aqueous dispersion with a high shear machine, and the step of continuously granulating the slurry by using vertical agitator. The process can be carried out for a long time without trouble, and can continuously provide a dry powder having good powder properties. The powder properties can be controlled by regulating operation conditions. | ||||||
| 111 | Fine-grained polyether-ketone powder, process for the manufacture thereof, and the use thereof | US891779 | 1992-06-01 | US5247052A | 1993-09-21 | Andreas Lucke; Dieter Steidl |
| A fine-grained polyether-ketone powder, having a particle size with a d.sub.50 value smaller than or equal to 40 .mu.m and a grain size distribution range smaller than or equal to 55 .mu.m, is obtained by cold-grinding of coarse-grained polyether-ketone in a fluid-bed opposed-jets mill, which is provided with a grinding chamber (2) subjected to gas jets, a grinding material-charging device, a screening device (5) for separating coarse material (11) and fine material (10), and a bottom (3) underneath the grinding chamber for added material to be ground and coarse material flowing back from the screening device, the material to be ground and the coarse material flowing back from the screening device being cooled by means of a cryogenic refrigerant.The powders obtained in this way are used for producing surface coatings or composites. | ||||||
| 112 | Polyolefin concentrate | US144232 | 1988-01-15 | US4877840A | 1989-10-31 | Kenneth C. Chu |
| A process for making compacted particulate polyolefin compositions is described. The process includes the steps of:(a) thoroughly mixing a molten blend of a polyolefin and a modifying agent;(b) cooling the blend to a temperature below the melting temperature of the polyolefin, while masticating the blend; and(c) continuing to masticate the blend and subsequently extruding the blend below its melting temperature to produce strands or pellets in crumble form.The modifying agent may be solid or liquid at S.T.P. and should be mobile at processing temperatures. Examples of modifying agents include polyalkylene glycols, polyisobutylene. A preferred polyolefin is polyethylene. It is preferable that the process take place in a twin-screw extruder. | ||||||
| 113 | Apparatus for the production of granulates | US622192 | 1984-06-19 | US4559000A | 1985-12-17 | Reinhard Froeschke |
| An apparatus forms granulates from a flowable viscous mass. The mass is delivered to a tubular body and flows downwardly from a lower slit thereof in the form of drops. An endlessly revolving belt travels across the slit in tight engagement therewith. The belt has orifices therein which intermittently open the slit to admit the passage of the drops. The drops fall onto a conveyor which travels below the belt in the same direction and at the same speed as the belt. | ||||||
| 114 | Process for producing a blow molding resin | US483877 | 1983-04-11 | US4528151A | 1985-07-09 | Yoshiho Matsuo; Ryoji Nishijima; Atsuhiko Yoshino; Takai Kawashima |
| A process for producing a blow molding resin comprises pelletizing a high density polyethylene prepared by means of a highly active Ziegler catalyst, at a temperature of at least 230.degree. C. in the presence of air or oxygen so as not to change the average molecular weight and the molecular weight distribution. | ||||||
| 115 | Oligomer pellets of ethylene terephthalate | US374155 | 1982-05-03 | US4436782A | 1984-03-13 | Chungfah H. Ho |
| Preparation of free-flowing pellets of ethylene terephthalate oligomer by water quenching droplets of molten oligomer. | ||||||
| 116 | Synthetic resin material, particularly surface material for phonograph records with a photograph or picture | US298772 | 1981-09-02 | US4435802A | 1984-03-06 | Masahisa Sakamoto; Yoshio Tamura; Tadashi Sakamoto |
| A surface material for phonograph records prepared by subjecting a copolymeric vinyl resin powder incorporated with a small amount of a stabilizer to the hot blending treatment, melt-kneading the product under heating, cooling the same to ambient temperature to form a mass, granulating the mass, freezing the resulting granules with liquid nitrogen and grinding the frozen granules into powders; and a phonograph record prepared by adhering a film of the surface material to the surface of a record-forming disc, having a photograph or picture printed thereon, by way of fusion under heating and forming a microgroove thereon. | ||||||
| 117 | Preparation of styrene-polymer and polyolefin micro-bits | US150737 | 1980-05-19 | US4427157A | 1984-01-24 | Max Klein |
| Disclosed is the preparation of micro-bits of expanded styrene-polymers and of expanded polyolefins by comminuting the styrene-polymer or polyolefin in a particular combination of comminuting steps in a suitable comminutor that can provide that combination of steps and in the presence of water as a cooling agent. The polymer micro-bits, which are produced as an aqueous slurry, may be rendered dry-to-the-touch by vacuum filtration followed by passage through a filter press. | ||||||
| 118 | Filtration using expanded styrene-polymer and polyolefin micro-bits | US150736 | 1980-05-19 | US4344846A | 1982-08-17 | Max Klein |
| Disclosed is (a) a filtration method using (i) micro-bits produced from an expanded thermoplastic polymer non-brittle in expanded form and selected from a styrene-polymer and a polyolefin from polyethylene to poly-methylpentene or (ii) mixtures of these micro-bits and inorganic filter aids as diatomaceous earth and perlite, and (b) these filter aid mixtures. These micro-bits and mixtures are useful filter aids in several different ways. One is to prepare a slurry of them in a liquid medium and feed this slurry to a filter element (as fabric filter cloth or wire filter cloth or ceramic filter) to provide on that element's feed side a precoat of the filter aid and liquid leaves as filtrate from its filtrate side.In another way these micro-bits and mixtures are used by being admixed into the liquid (inert to them) containing finely divided material suspended or dispersed in the liquid and to be removed. Also, these micro-bits alone or mixture with diatomaceous earth or perlite can be admixed into the liquid medium. Another way to use the micro-bits or their mixture is by using the precoat route and with the liquid dispersion to be filtered containing in it these micro-bits alone or admixed with any inorganic filter aid. | ||||||
| 119 | Oligomer pellets of ethylene terephthalate | US209324 | 1980-11-24 | US4340550A | 1982-07-20 | Chungfah H. Ho |
| Preparation of free-flowing pellets of ethylene terephthalate oligomer by water quenching droplets of molten oligomer. | ||||||
| 120 | Extrusion apparatus | US97750 | 1979-11-27 | US4279579A | 1981-07-21 | Reinhard Froeschke |
| Apparatus for the extrusion of a flowable mass onto a conveyor, comprises first and second cylindrical containers. The first container is disposed for rotation about a longitudinal axis and includes first passages for depositing the flowable mass. The second container includes a wall portion which contains a plurality of second passages. The wall portion is disposed against the first container, the latter rotating relative to the second container so that the first and second passages are periodically aligned to enable the flowable mass to be deposited onto the conveyor. The first and second containers define a gap therebetween which creates a negative pressure to suck-in excess mass from the outer periphery of the apparatus. A spatula is provided to push the mass into the gap. | ||||||
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