Patents Examined by Paul F. Shaver
  • Silacycloalkane amides
    Patent number: 4296240
    Abstract: Anti-atherosclerotic agents of the formula: ##STR1## wherein R.sup.1 is (a) alkyl having from 1 to 22 carbon atoms; or(b) of the formula ##STR2## in which m is 0, 1 or 2, and each of R' and R" is, independently, hydrogen, halo or lower alkyl or alkoxy; R.sup.2 and R.sup.3 are joined to form with the silicon atom a heterocyclic ring having from 3 to 20 ring members; and R is an aralkyl-, phenyl- tryptophanyl- or benzocycloalkyl-type radical, eg 1-butyl-N-[(2-(4'-methyl-phenyl)-1-phenylethyl]-1-silacyclohexane propanamide, are obtained by reducing corresponding .alpha.,.beta.-unsaturated analogs.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: October 20, 1981
    Assignee: Sandoz, Inc.
    Inventor: Robert E. Damon, II
  • Cationic dyestuffs
    Patent number: 4294756
    Abstract: Cationic dyestuffs of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another represent a lower alkyl, alkenyl or hydroxyalkyl radical,R.sub.3 represents H or halogen,R.sub.4 represents H, halogen, or a lower alkyl, alkenyl or alkoxy radical,R.sub.5 represents H or a lower alkyl radical,R.sub.6 represents a lower alkyl, alkenyl, halogenoalkyl, alkoxyalkyl, hydroxyalkyl or cyanoalkyl radical andX.sup.- represents an anion,at least one of the substituents R.sub.3 and R.sub.4 being other than H, are used for dyeing and printing natural and synthetic materials, in particular polyacrylonitrile.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: October 13, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hans-Peter Kuhlthau
  • Hydrophilic silicone compounds and contact lenses containing polymers thereof
    Patent number: 4294974
    Abstract: Homopolymers and copolymers of compounds according to the formula: ##STR1## wherein R is an alkyl having 1 to 3 carbons, a+b+c+d=e, b=O to e, c=O to e, b+c>1, d=0 to 5, e=1 to 100, and Y is an organic group containing at least one>C.dbd.C<are hydrophilic as well as exhibiting properties similar to silicone compounds. The polymers are particularly useful in contact lenses having enhanced oxygen permeability.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: October 13, 1981
    Assignee: American Optical Corporation
    Inventor: Albert R. LeBoeuf
  • Hydroalkenyloxysilanes
    Patent number: 4294975
    Abstract: The invention provides a novel class of organosilicon compounds which are hydrogenalkenyloxysilanes represented by the general formula ##STR1## in which R.sup.1 is a monovalent hydrocarbon group having from 1 to 8 carbon atoms, R.sup.2, R.sup.3 and R.sup.4 are each a hydrogen atom or a monovalent hydrocarbon group having from 1 to 8 carbon atoms and n is a number of zero, 1 or 2. The silane compounds are readily obtained by the dehydrochlorination reaction between a corresponding hydrogen-containing chlorosilane compound and an .alpha., .beta.-unsaturated aldehyde compound or a ketone compound in the presence of an acid acceptor. The compounds are useful as a modifying agent in the silicone technology and also serve as a curing agent.
    Type: Grant
    Filed: May 20, 1980
    Date of Patent: October 13, 1981
    Assignee: Shin-Etsu Chemical Co. Ltd.
    Inventors: Toshio Takago, Masatoshi Arai, Koji Futatsumori
  • Tetraalkylated biscyclohexylamine derivatives
    Patent number: 4293687
    Abstract: New biscyclohexylamine derivatives represented by the following formula ##STR1## wherein R.sup.1 to R.sup.4 represent identical or different alkyl groups having 1 to 6 carbon atoms;X is a single bond,a divalent aliphatic straight-chain or branched-chain group having from 2 to 10 carbon atoms,a methylene group, when at least one of the substituents R.sup.1 to R.sup.4 has more than 1 carbon atom,a divalent cycloaliphatic group having from 6 to 12 carbon atoms,a divalent aliphatic straight-chain or branched-chain group with cycloaliphatic substituents having from 6 to 8 carbon atoms,a divalent straight-chain or branched-chain dialkyl cyclohexane group having from 8 to 12 carbon atoms and a divalent straight-chain or branched-chain dialkyl benzene group having from 8 to 12 carbon atoms.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: October 6, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Oskar Weissel, Volker Serini, Hans-Josef Buysch
  • Novel 2-substituted-3,4-epoxycyclopentan-1-ones, 2-substituted-3,4-epoxycyclopentan-1-ols, and various 2-substituted-cyclopentenones
    Patent number: 4293704
    Abstract: This invention relates to novel 4-oxy-2-substituted-cyclopent-2-en-1-ones of the following general formula: ##STR1## and the optical antipodes, racemic mixtures, and diastereomeric mixtures thereof wherein p is an integer from 2 to 6, inclusive, and J is hydrogen or an appropriate and compatible blocking group such as tetrahydropyranyl or tri(lower alkyl)silyl. Suitable lower alkyl groups contemplated by the present invention are those having up to four carbon atoms such as methyl, ethyl, isopropyl, tert-butyl, etc.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: October 6, 1981
    Assignee: American Cyanamid Company
    Inventors: Karel F. Bernady, Middleton B. Floyd, Jr., John F. Poletto, Robert E. Schaub, Martin J. Weiss
  • Lubricating oils for the working of metals
    Patent number: 4292187
    Abstract: A condensation product from aliphatic or cycloaliphatic polyols, aliphatic saturated or once unsaturated hydroxycarboxylic acids and aliphatic or cycloaliphatic saturated or unsaturated monocarboxylic acids is an effective lubricant for the working of metals, optionally in admixture with other lubricating oils and conventional additives.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: September 29, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Heinz Hentschel, Rolf Dhein, Wolfgang Schule
  • Method for producing 3-chloropropyltrichlorosilane
    Patent number: 4292433
    Abstract: In the method of producing 3-chloropropyltrichlorosilane by the addition reaction of trichlorosilane to allyl chloride, [Pt(PPh.sub.3).sub.2 Cl.sub.2 ] is used as the catalyst for the reaction.Side reactions are suppressed to give a high yield of the product.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: September 29, 1981
    Assignee: Chisso Corporation
    Inventors: Isao Koga, Yohji Terui, Masuhito Ohgushi, Tohru Kitahara, Kenichi Watanabe
  • Process for the preparation of N-protected N-formimidoyl 2-aminoethanethiol
    Patent number: 4292436
    Abstract: Disclosed is 2 and a process for its preparation: ##STR1## It is useful in the synthesis of N-formimidoyl thienamycin; R.sup.2 is hydrogen or a protecting group.
    Type: Grant
    Filed: June 25, 1980
    Date of Patent: September 29, 1981
    Assignee: Merck & Co., Inc.
    Inventors: Thomas M. H. Liu, Robert A. Reamer, Ichiro Shinkai, Meyer Sletzinger
  • Process for the addition of Si-bonded hydrogen to an aliphatic multiple bond
    Patent number: 4292434
    Abstract: A process for the addition of Si-bonded hydrogen to an aliphatic multiple bond in the presence of a platinum catalyst which is obtained by dissolving a platinum halide in at least 20 parts by weight of olefin for each part by weight of the platinum halide, and subsequently heating and mixing the solution obtained with from 0.5 to 1 mole of a primary and/or secondary amine for each gram atom of platinum.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: September 29, 1981
    Assignee: Wacker-Chemie GmbH
    Inventors: Tassilo Lindner, Georg Engelsberger, Norbert Zeller, Rudolf Riedle
  • Preparation of tetramethyldisilane from 1,2-tetramethyldichlorodisilane
    Patent number: 4291167
    Abstract: A process of producing tetramethyldisilane by reacting tetramethyldichlorodisilane with a reducing mixture of NaH and NaBH.sub.4 in the presence of a complexing ether such as the diethyl ether of tetraethylene glycol.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: September 22, 1981
    Assignee: Nalco Chemical Company
    Inventors: Ronald J. Allain, Joseph P. Maniscalco
  • Silylated indanyloxyacetates
    Patent number: 4291168
    Abstract: Indanyloxy compounds having 2-alkynyl substituents which exhibit diuretic, saluretic, and uricosuric activity are described. The compounds are obtained according to a process involving selective etherification of a 5-hydroxyindanone followed by alkynylation with a silylated alkynyl bromide to provide novel silylated intermediates which are hydrolyzed to indanyloxy compounds such as (6,7-dichloro-1-oxo-2-phenyl-2-propargyl-5-indanyloxy)acetic acid.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: September 22, 1981
    Assignee: Mead Johnson & Company
    Inventors: Porter C. Johnson, William L. Matier
  • Synthesis of chloromethyldisilanes
    Patent number: 4289890
    Abstract: 1,2 Dichloro-1,1,2,2-tetramethyldisilane is synthesized in high yield and good purity starting from a crude mixture of chloromethyldisilanes formed as by-products in the manufacture of silicones. The new method uses less than half as much Grignard reagent as previous methods required. The synthesis can also be used to produce other haloalkyldisilanes such as chloropentamethyldisilane or 1,1,2 trichloro-1,2,2-trimethyldisilane.
    Type: Grant
    Filed: November 7, 1979
    Date of Patent: September 15, 1981
    Inventor: Roy G. Gordon
  • Silicone diffusion pump fluids
    Patent number: 4289891
    Abstract: The present invention relates to a variety of silicone diffusion pump fluids which are inexpensive to produce. An example of a preferred diffusion pump fluid of the present case is one of the formula, ##STR1## where .phi. is phenyl and such that the fluid boils at 245.degree. C. at 1.5 mm. of Hg pressure. The present invention also has within its scope a process for producing such silicone diffusion pump fluids by hydrolyzing the appropriate chlorosilanes by a reverse hydrolysis procedure, that is, adding the appropriate amount of water to the mixture of chlorosilanes.
    Type: Grant
    Filed: April 21, 1978
    Date of Patent: September 15, 1981
    Assignee: General Electric Company
    Inventor: Edgar D. Brown, Jr.
  • Process for preparing molybdenum-containing compositions useful for improved fuel economy of internal combustion engines
    Patent number: 4289635
    Abstract: Molybdenum-containing compositions prepared by reacting an olefinically unsaturated compound capable of reacting with active sulfur with a composition prepared by reacting:(a) a phosphorus-containing acid represented by the formula: ##STR1## wherein each X and X' is independently oxygen or sulfur, each n is zero or one and each R is independently the same or a different hydrocarbon-based radical; and(b) at least one hexavalent molybdenum oxide compound, and(c) hydrogen sulfide,in the presence of (d) a polar solvent are useful as additives for lubricants. Internal combustion engines, especially gasoline engines, when lubricated by said additive-containing lubricants exhibit improved fuel economy.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: September 15, 1981
    Assignee: The Lubrizol Corporation
    Inventor: Calvin W. Schroeck
  • Preparation of tetraalkoxysilanes
    Patent number: 4289889
    Abstract: Process for the preparation of tetraalkylorthosilicates which comprises contacting alkanol and dimethylamine with copper-activated silicon, followed by adding alkanol to the resultant silane mixture.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: September 15, 1981
    Assignee: Union Carbide Corporation
    Inventors: William B. Herdle, Bernard Kanner, Donald L. Bailey
  • Novel organosilane compounds
    Patent number: 4288375
    Abstract: The invention provides a novel class of organosilane compounds having a glycidyloxy group and one or more of alkenyloxy groups bonded to the silicon atom as represented by the general formula ##STR1## in which R.sup.1 is a monovalent hydrocarbon group having from 1 to 8 carbon atoms, R.sup.2, R.sup.3 and R.sup.4 are each a hydrogen atom or a monovalent hydrocarbon group having from 1 to 8 carbon atoms, m is an integer of 3, 4 or 5 and n is a number of zero, 1 or 2. The organosilane compound, e.g. 3-glycidyloxypropyl-containing alkenyloxysilanes can be readily prepared by the addition reaction of glycidyl allyl ether and a corresponding alkenyloxysilane having a hydrogen atom directly bonded to the silicon atom in the presence of a platinum catalyst. The organosilane compounds are useful as a coupling agent to increase adhesive bonding strength between inorganic and organic materials.
    Type: Grant
    Filed: June 24, 1980
    Date of Patent: September 8, 1981
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masatoshi Arai, Koji Futatsumori
  • Method for the production of tetraalkyl silicates
    Patent number: 4288604
    Abstract: Tetraalkyl silicates are produced by the reaction of silicon metal with an alkanol in the presence of an alkali metal salt of an alkoxyalkoxy alcohol or a polyalkylene glycol in either an alkoxyalkoxy alcohol or a polyalkylene glycol or mixtures thereof and recovery of the product. Tetramethyl silicate and tetraethyl silicate are the preferred products. The preferred alkoxyalkoxy alcohol is 2-(2-butoxyethoxy)ethanol. The preferred glycol is diethylene glycol. An indifferent solvent and/or a hydroxide-scavenger may be employed in the reaction mixture.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: September 8, 1981
    Assignee: Stauffer Chemical Company
    Inventors: Walter L. Magee, Jeffrey E. Telschow
  • Silylated catechol compositions
    Patent number: 4288603
    Abstract: Accelerators useful for the cure of epoxy resin compositions are derived from the silylation of substituted catechol derivatives.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: September 8, 1981
    Assignee: General Electric Company
    Inventor: Charles J. Stark, Jr.
  • Process for synthesizing silanol chain-stopped fluorosiloxane fluids
    Patent number: 4287353
    Abstract: A method for producing silanol chain-stopped fluoroalkyl polysiloxane fluids is disclosed. Fluoroalkyl substituted cyclic trisiloxanes are reacted with water, a catalyst and a polyethyleneglycol ether promoter to produce a fluorosilicone polymer of the desired molecular weight and viscosity.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: September 1, 1981
    Assignee: General Electric Company
    Inventor: Ben A. Bluestein