Abstract: A slide gate closure is provided for bottom discharge bins which are used for storing and transporting large quantities of dry chemicals. The slide gate includes screw means attached to the gate whereby the contents of the container may be fully or partially removed through a discharge opening by rotation of the screw means. Wedges are provided on and about the gate to form a six point contact between the slide gate and a sealing gasket.
Type:
Grant
Filed:
March 13, 1992
Date of Patent:
March 2, 1993
Assignee:
Hoechst Celanese Corporation
Inventors:
Jimmy W. Copas, Roderick G. MacLennan, III, Thomas L. Overcash, Michael D. Sawyer, Thomas D. Willingham
Abstract: A polyarylene sulfide resin composition useful for molded parts comprises (A) 100 parts by weight of a polyarylene sulfide, (B) 0.01 to 10 parts by weight of an organic bisphosphite of the formula: ##STR1## in which R.sub.1 and R.sub.2 are each an alkyl, an alkyl having at least one substituent, an aryl, an aryl having at least one substituent or an alkoxy, (C) 0 to 400 parts by weight of an inorganic filler and (D) 0.01 to 5 parts by weight of at least one alkoxy silane.
Type:
Grant
Filed:
December 26, 1990
Date of Patent:
February 9, 1993
Assignee:
Polyplastics Co., Inc.
Inventors:
Toshifumi Nonaka, Toshikatsu Nitoh, Andrew Auerbach
Abstract: The present invention provides a novel class of naphthylsulfonylalkanoic acid compounds such as a structure corrresponding to the formula: ##STR1## or a pharmaceutically acceptable salt thereof. A present invention naphthylsulfonylalkanoic acid compound is useful for prevention or treatment of irritable bowel syndrome, biliary dyskinesia and acute pancreatitis.
Abstract: This invention provides a cannulation device which is adapted for facilitating the location and venipuncture of a blood vessel with ease and precision. A carrier assembly supports a movable cubic block unit which contains an aligned combination of an ultrasonic probe and a cannula guide path means. The cubic block unit moves laterally within a defined space, whereby a blood vessel is located ultrasonically by by blood flow detection, and the guide path means assists venipuncture by a cannula.
Abstract: A resin material for inserting a lead frame comprises:(A) 100 parts by weight of a polyarylene sulfide resin,(B) 0.1 to 30 parts by weight of an .alpha.-olefin copolymer graft-copolymerized with an unsaturated carboxylic acid or its anhydride, and(C) 10 to 300 parts by weight of a fibrous filler, a nonfibrous inorganic filler or a mixture thereof.The grafted unsaturated carboxylic acid such as maleic anhydride is essential, in comparison with olefin copolymers, preferably in an amount of 1 to 5 percent. The olefin copolymer includes that of ethylene and ethyl acrylate. The addition of (B) effectively works to improve adhesion between the lead frame and the polyarylene sulfide composition, because it does not decompose and give a gas during molding. Heat resistance and the molding performance does not change. An example comprises PPS, a copolymer of ethylene and ethyl acrylate, grafted with 3.0% of maleic anhydride, glass fiber and glass beads.
Abstract: Acetic acid containing iodide, unsaturates and carbonyl impurities is purified by treatment with ozone and thereafter contacted with activated carbon and/or an ion-exchange resin for removal of impurities.
Type:
Grant
Filed:
April 19, 1991
Date of Patent:
October 13, 1992
Assignee:
Hoechst Celanese Corporation
Inventors:
Mark O. Scates, Russell K. Gibbs, Jr., G. Paull Torrence
Abstract: Acetic acid containing iodide, unsaturates and carbonyl impurities is purified by treatment with ozone in the presence of an oxidation catalyst. The acetic acid product may be further contacted with activated carbon or ion-exchange resins for additional removal of impurities.
Type:
Grant
Filed:
April 19, 1991
Date of Patent:
October 13, 1992
Assignee:
Hoechst Celanese Corporation
Inventors:
Mark O. Scates, Russell K. Gibbs, Jr., G. Paull Torrence
Abstract: The polyarylene sulfide resin composition is improved in impact strength and rigidity and useful as engineering plastics. It is prepred by mixing 100 parts by weight of a resin component comprising(A) 99 to 20 parts by weight of a polyarylene sulfide resin and(B) 1 to 80 parts by weight of a polyamide resin with(C) 0.5 to 50 parts by weight of an olefin copolymer comprising an .alpha.-olefin and a glycidyl ester of an .alpha., .beta.-unsaturated acid,(D) 0.01 to 5 parts by weight of an alkoxysilane compound and(E) 0 to 400 parts by weight of one or more fillers selected from among fibrous, powdery and flaky ones.
Abstract: The present invention provides a novel class of phenylsulfonylalkanoic acid compounds such as a structure corresponding to the formula: ##STR1## or a pharmaceutically acceptable salt thereof. A present invention phenylsulfonylalkanoic acid compound is useful for prevention or treatment of irritable bowel syndrome, biliary dyskinesia and acute pancreatitis.
Abstract: Talc filled thermoplastic polyester compositions which have been modified by the addition of a butadiene-based impact modifier are stabilized against degradation by the addition thereto of a specific phosphorous compound.
Abstract: Talc filled thermoplastic polyester compositions which have been modified by the addition of a butadiene-based impact modifier are stabilized against degradation by the addition thereto of a specific phosphorous compound.
Abstract: Talc filled thermoplastic polyester compositions which have been modified by the addition of a butadiene-based impact modifier are stabilized against degradation by the addition thereto of a specific diamide compound.
Abstract: Talc filled thermoplastic polyester compositions which have been modified by the addition of a butadiene-based impact modifier are stabilized against degradation by the addition thereto of a specific diphenylamine compound.
Abstract: A polycarbonate resin composition improved in heat resistance by the addition of an organic cyclic phosphite represented by the general formula: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 9 carbon atoms; R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R.sub.3 represents an alkyl group having 1 to 30 carbon atoms.
Abstract: In one embodiment this invention provides novel organic compounds and polymers characterized by a 1,4-bis(4-arylbutadienyl)benzene structure which exhibits third order nonlinear optical response.
Abstract: This invention provides process embodiments for the production of second order nonlinear optical media and waveguiding devices. An important aspect of an invention waveguiding device is the use of a novel electrode design which permits the application of a high voltage electric field for molecular orientation of a dipolar organic waveguiding medium.
Abstract: Organometallic preceramic polymers are melt spun into fibers utilizing a spinning apparatus which directs the preceramic polymer from a stagnant melt pool of said polymer to a spinneret. The spinneret is one used for solvent spinning and, thus, has a shorter residence time during extrusion through the spinneret orifice than conventional melt spinning spinnerets.
Type:
Grant
Filed:
June 19, 1990
Date of Patent:
March 3, 1992
Assignee:
Hoechst Celanese Corp.
Inventors:
Martin H. G. Deeg, Joseph J. DiBiase, Joseph Pickton
Abstract: A method of forming 6-substituted-2-vinyl naphthalene from a 2-substituted naphthalene compound wherein the substituent in the 2-position is an ortho-para directing electron-donating group not reactive with hydrogen fluoride, comprises contacting the naphthalene compound and an acylating agent with substantially anhydrous hydrogen fluoride to acylate the naphthalene compound to a 6-substituted-2-acylnaphthalene compound, hydrogenating the 6-substituted-2-acylnaphthalene compound to convert the 2-acyl substituent to an alcohol substituent, dehydrating the product of hydrogenation in the presence of a free radical inhibitor to convert the alcohol substituent to an olefinic substituent, and isolating the formed 6-substituted-2-vinylnaphthalene subsequent to the dehydration.
Type:
Grant
Filed:
September 26, 1990
Date of Patent:
February 11, 1992
Assignee:
Hoechst Celanese Corporation
Inventors:
Mohammad Aslam, Henry C. Linstid, III., Kenneth G. Davenport
Abstract: In one embodiment this invention provides an optical medium which consists of a microdispersion of liquid crystal droplets in a synthetic resin matrix. A preferred invention optical medium exhibits a Kerr effect, and can transmit propagating light waves with low scattering loss under waveguiding conditions.