Method for conducting a vapor-liquid contact reaction semi-batchwise
Accordingly, it is an object of the present invention to provide a method for conducting a vapor-liquid contact reaction semi-batchwise which comprises drawing a part of the reaction liquid from the r... Read More
Inventors: Masuda, Shunji; Oyama, Yoshinori; Tanaka, Hisao; Uchigasaki, Isao; Sasaki, Takehisa;, Assignee: Hitachi Chemical Company, Ltd. (Tokyo, JA) |
Process for the bulk polymerization of alkenylaromatic compounds
What is claimed is: 1. A process for making polymers of alkenylaromatic and alkenylcycloaliphatic monomeric compounds in a heated agitated continuous polymerization vessel to which one or more monomer... Read More
Inventors: Walkenhorst, Wilfried;, Assignee: Hoechst Aktiengesellschaft (Frankfurt (Main), DE) |
Method for reducing sharkskin melt fracture during extrusion of ethylene polymers
What is claimed is: 1. A process for reducing the melt fracture during extrusion of a molten narrow molecular weight distribution linear ethylene polymer under conditions of flow rate and melt tempera... Read More
Inventors: Kurtz, Stuart J.; Blakeslee, III, Theodore R.; Scarola, Leonard S.;, Assignee: Union Carbide Corporation (New York, NY) |
Preparation of propylene homopolymers or copolymers
We claim: 1. A process for the preparation of a propylene homopolymer or copolymer which contains more than 50% by weight of propylene and less than 50% by weight of other .alpha.-monoolefins, of 2 to... Read More
Inventors: Rau, Wolfgang; Klamann, Helmut; Hennenberger, Peter;, Assignee: BASF Aktiengesellschaft (DE) |
Organometallic fluorenyl compounds, preparation, and use
OF THE INVENTION The novel metallocenes provided in accordance with the present invention fall into two broad general categories. One category involves metallocenes in which a fluorenyl radical, eith... Read More
Inventors: Alt, Helmut G.; Palackal, Syriac J.; Patsidis, Konstantinos; Welch, M. Bruce; Geerts, Rolf L.; Hsieh, Eric T.; McDaniel, Max P.; Hawley, Gil R.; Smith, Paul D.;, Assignee: Phillips Petroleum Company (Bartlesville, OK) |
Process for polymerizing tactioselective polyolefins in condensed phase using titanocenes
OF THE INVENTION The inventor has found that titanocenes meeting certain symmetry conditions can make tactioselective polyolefins or copolymers having regions of tactioselectivity under condensed pha... Read More
Inventors: Ewen, John A.;, Assignee: |
Hot melt polybutylene and poly(butylene/ethylene) adhesives and laminar structures
Butene-1 homopolymers and copolymers useful with the present invention are primarily linear chain molecules with regular and spatially ordered arrangements of ethyl side groups; the groups that resul... Read More
Inventors: Mostert, Simon;, Assignee: Shell Oil Company (Houston, TX) |
Magnetic recording medium
OF THE INVENTION In producing a magnetic recording medium in accordance with the present invention, a lower non-magnetic layer (hereinafter referred to as a "non-magnetic layer" or a "lower layer") i... Read More
Inventors: Inaba, Hiroo; Ejiri, Kiyomi;, Assignee: Fuji Photo Film Co., Ltd. (Kanagawa, JP) |
Adhesive fastening tab
OF THE PREFERRED EMBODIMENTS The diaper closure system of the invention can be used with any conventional diaper which uses an adhesive fastening tab to effect closure of the diaper or incontinence d... Read More
Inventors: Bany, Stephen W.; Miller, John A.; Eaton, Brad W.;, Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN) |
Low viscosity hot melt pressure sensitive adhesive compositions
OF THE INVENTION The styrenic block copolymer used as the base elastomer component of the adhesive composition of the invention is that described in the co-pending application and is preferably a tri... Read More
Inventors: Jacob, Lutz Erich;, Assignee: Exxon Chemical Patents Inc. (Houston, TX) |
Permanently crimped fibres and method for making same
What is claimed is: 1. Permanently crimped fibres made of polyamide or copolyamide, wherein the crimp structure of the fibres is three-dimensional, and the linear density of the fibres is greater than... Read More
Inventors: Chaubet, Olivier; Cieslak, Michel; Prevost, Jean-Pierre;, Assignee: Novalis Fibres (Venissieux, FR) |
Chemical compositions based on titanium trihalides and methods for their production and use
We claim: 1. A chemical composition based on a titanium trihalide and at least one other halide of a metal selected from the group consisting of Al, Cr, Mn, Fe, V, Ti, Zr, Mo, Zn and Ca, when prepared... Read More
Inventors: Corbellini, Margherita; Greco, Alberto; Osellame, Mirko;, Assignee: Snamprogetti, S.p.A. (Milan, IT) |
Synthesis of 9-carbamoyl-9-(3-aminopropyl)fluorenes
OF THE INVENTION The process provided by this invention is carried out by catalytically hydrogenating a 9-carbamoyl-9-(2-cyanoethyl)fluorene in an acid medium stronger than glacial acetic acid. As po... Read More
Inventors: Lacefield, William B.; Pfeifer, William;, Assignee: Eli Lilly and Company (Indianapolis, IN) |
Catalysts prepared from tetrakis(dialkylamide or diarylamide) derivatives of titanium and polymerization of olefins therewith
OF THE INVENTION The transition metal tetrakis(dialkyl- or diarylamides) are commercially available, or they can be prepared by reacting a dialkyl- or diarylamine such as those wherein the alkyl grou... Read More
Inventors: Hefner, John G.;, Assignee: The Dow Chemical Company (Midland, MI) |
Catalyst for sweetening a sour hydrocarbon fraction containing metal oxide solid solution and magnesium oxide
OF THE INVENTION As stated, this invention relates to a process for treating a sour hydrocarbon fraction that contains mercaptans and to a catalyst for use in said process. The process involves conta... Read More
Inventors: Ferm, Barret A.; Arena, Blaise J.; Holmgren, Jennifer S.;, Assignee: UOP (Des Plaines, IL) |
High tensile strength amorphous 1-butene/propylene and ethylene/propylene copolymers
The present invention provides novel propylene/1-butene copolymers and a process for making the propylene/1-butene copolymers. The propylene/1-butene copolymers of the present invention comprise from ... Read More
Inventors: Sustic, Andres; Allen, George C.;, Assignee: Rexene Corporation (Dallas, TX) |
Elastomeric amorphous olefin terpolymer
OF THE INVENTION The applicants have unexpectedly discovered a process by which an amorphous, highly elastomeric terpolymer of ethylene, hexene, and propylene units is produced. The presence of a par... Read More
Inventors: Holliday, Robert Emmett; Stuart, Jr., Richard Kingsley;, Assignee: Eastman Chemical Company (Kingsport, TN) |
Process for the production of suspension polyvinyl chloride suitable for processing by injection molding
What is claimed is: 1. In a process for the production of suspension polyvinyl chloride suitable for processing by injection molding, comprising suspension polymerizing vinyl chloride at at least two ... Read More
Inventors: Bieringer, Heimo; Engler, Martin; Holtrup, Wolfgang;, Assignee: Huels Aktiengesellschaft (Marl, DE) |
Modified polybutylene-base hot melt compositions
OF THE PREFERRED EMBODIMENT Within the scope of the present invention the term "modified" refers to polymers which have been associated, such as by intimate blending, with a small amount of maleic an... Read More
Inventors: Hwo, Charles C.; Mostert, Simone;, Assignee: Shell Oil Company (Houston, TX) |
Anticorrosion binders comprising phosphate or phosphonate groups
We claim: 1. An aqueous polymer dispersion obtained by emulsion polymerization of a monomer mixture A) comprising from 50 to 100% by weight of C.sub.1 -C.sub.18 alkyl (meth)acrylates, vinyl esters, vi... Read More
Inventors: Schlarb, Bernhard; Wiese, Harm; Wildburg, Gerald; Rau, Maria Gyopar;, Assignee: BASF Aktiengesellschaft (Ludwigshafen, DE) |
Magnetic recording medium
An object of the present invention is to provide a magnetic recording medium comprising a thin film of a multi-layer structure having improved surface smoothness and orientation. According to the pres... Read More
Inventors: Morita, Haruyuki; Yoshinari, Jiro; Fukuda, Kazumasa;, Assignee: TDK Corporation (Tokyo, JP) |
Method of adding a halogen element into oxide superconducting materials by ion injection
The object of this invention is to provide a method to overcome the problems as mentioned above, in which a halogen element is added to the oxide superconducting material to fill part or all of the ox... Read More
Inventors: Yamazaki, Shunpei;, Assignee: Semiconductor Energy Laboratory Co., Ltd. (Atsugi, JP) |
High temperature superconductor-strontium titanate sapphire structures
OF THE INVENTION Referring now to FIG. 1, the layered structure 10 is composed of a sapphire base or substrate 12, a thin buffer layer 14 and a HTSC layer 16. The buffer layer 14 and the HTSC layer 1... Read More
Inventors: Newman, Nathan; Char, Kookrin;, Assignee: |
Method of manufacturing an oxide superconductor thin film
An object of the present invention is to provide a method of manufacturing an oxide superconductor thin film, which makes it possible to obtain easily and without employing an element substitution an ... Read More
Inventors: Yamamoto, Kiyoshi; Sugii, Nobuyuki; Kubo, Koichi; Ichikawa, Michiharu; Yamauchi, Hisao;, Assignee: The Furukawa Electric Co., Ltd. (Tokyo, JP); Hitachi Ltd. (Tokyo, JP); Kabushiki Kaisha Toshiba (Kawasaki, JP); Central Research Institute of Electric Power Industry (Tokyo, JP); International Superconductivity Technology Center (Tokyo, JP) |
Polyethylene, thermoplastic resin composition containing same, and process for preparing polyethylene
We claim: 1. A polyethylene derived from an ethylene monomer in which (1) a quaternary carbon atom is not present in a polymeric main chain; (2) the activation energy (Ea) of the melt flow is in the r... Read More
Inventors: Machida, Shuji; Shikuma, Haruo; Hoshino, Ayami; Takakura, Yutaka;, Assignee: Idemitsu Kosan Co., Ltd. (Tokyo, JP) |
Hot-melt adhesive composition
OF THE INVENTION The adhesive compositions of the present invention preferably have a melt viscosity of about 4,000 to about 10,000 centipoise at 135.degree. C., more preferably about 5,000 to about ... Read More
Inventors: Foster, Bruce W.; Clubb, Clyde N.; Stuart, Jr., Richard K.;, Assignee: Eastman Kodak Company (Rochester, NY) |
Hot melt adhesive having improved wet strength
What we claim as new and desire to secure by Letters Patent is: 1. A hot melt adhesive composition having improved wet strength characteristics comprising a formulation having the following ingredient... Read More
Inventors: Strelow, Diane; Alper, Mark;, Assignee: Findley Adhesives, Inc. (Wauwatosa, WI) |
Base inliner, production thereof and use thereof
What is claimed is: 1. A base inliner comprising a textile sheet material and a reinforcement in the form of multifilament reinforcing threads wherein said reinforcement absorbs a force so that an app... Read More
Inventors: Groh, Werner; Profe, Hans-Jurgen; Schops, Michael;, Assignee: Johns Manville International, Inc. (Denver, CO) |
Method for forming perfluorocarbon ethers
What is claimed is: 1. A method for forming fluorocarbon ethers having perfluoralkyl groups, comprising: a. fluorinating a high molecular weight polyether under conditions which produce a fluorinated ... Read More
Inventors: Lagow, Richard J.; Gerhardt, Glenn E.;, Assignee: The University of Texas (Austin, TX) |
Process for preparing peroxidic perfluoropolyethers
We claim: 1. A process for preparing peroxidic perfluoropolyethers containing perfluoroalkylenoxy units of the formulae (CF.sub.2 --CF.sub.2 O) and (CF.sub.2 O), comprising: reacting tetrafluoroethyle... Read More
Inventors: Sianesi, Dario; Marraccini, Antonio; Marchionni, Giuseppe;, Assignee: Ausimont s.r.l. (Milan, IT) |
Adhesives and Rubbers 
