Patents Assigned to Imperial Chemical Industries Limited
  • Method of inducing luteolysis using 16-aryloxy-17,18,19,20-tetranor-prostanoic acid derivatives
    Patent number: 4321275
    Abstract: The disclosure relates to novel 17,18,19,20-tetranor-prostanoic acid derivatives having prostaglandin-type properties, to a method for their manufacture, and also to pharmaceutical or veterinary compositions containing said novel derivatives and a method of inducing luteolysis in an animal host by use of said novel derivatives.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: March 23, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Jean Bowler, Neville S. Crossley
  • Oil boom
    Patent number: 4320990
    Abstract: An oil boom comprises a plurality of collapsible support members, particularly hinged polypropylene mouldings, detachably strung together, apparatus to hold said support members in the non collapsed state, and a sleeving of water-resistant oil-absorbent material, in particular a laminar pile surfaced thermoplastic material, disposed round the support members, the support members, when in the non collapsed state and bearing the sleeving, being capable of floating on the surface of water.
    Type: Grant
    Filed: June 7, 1977
    Date of Patent: March 23, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: Peter J. R. Heasman
  • Thermoplastic aromatic polyetherketones
    Patent number: 4320224
    Abstract: Tough crystalline thermoplastic aromatic polyetherketones containing the repeat units ##STR1## alone or in conjunction with other repeat units especially ##STR2## and having an inherent viscosity IV of at least 0.7, preferably at least 0.8. The polymers may be made by condensation of hydroquinone, 4,4'-difluorobenzophenone and an alkali metal carbonate or bicarbonate in the presence of an aromatic sulphone solvent, e.g. diphenylsulphone, at 150.degree.-400.degree. C. The polymers are very useful for wire coating.
    Type: Grant
    Filed: October 31, 1978
    Date of Patent: March 16, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: John B. Rose, Philip A. Staniland
  • Process for preparing shaped body of alumina
    Patent number: 4320074
    Abstract: The process relates to the preparation of a shaped body having at least one dimension less than 100 microns and comprising alumina or an alumina hydrate. An aqueous composition comprising a water-soluble aluminum compound, for example aluminum chloride, sulphate, acetate, formate, propionate, oxalate, phosphate or nitrate and a water-soluble organic polymer is formed into the desired shape. The body so formed is dried, and is subjected to hydrothermal treatment at a temperature of at least 200.degree. C. to decompose the aluminum compound to alumina or an alumina hydrate. The body is optionally further heated subsequent to the hydrothermal treatment.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: March 16, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: James D. Birchall, Michael J. Morton
  • Base for a bed
    Patent number: 4319370
    Abstract: A base for a bed comprising (preferably two or four) light-weight thermoplastics platforms interlocked together by couplings which engage skirts and lugs depending from the platforms so as to prevent rotation of one platform relative to another. The platforms are easily separated for transport by a vertical lifting force yet they resist separation by unintentional rotational forces caused by sitting on or lifting their peripheral edges.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: March 16, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: James D. Robinson
  • Polypeptide
    Patent number: 4320117
    Abstract: The disclosure relates to novel polypeptides which possess analgesic activity, to processes for their manufacture and to pharmaceutical compositions containing them.
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: March 16, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Anand S. Dutta, James J. Gormley, Christopher F. Hayward, John S. Morley, Gilbert J. Stacey
  • Welded structures
    Patent number: 4318966
    Abstract: Compensation is provided in a welded structure formed from dissimilar metals e.g. carbon steel and stainless steel for knife-line corrosion occurring at the interface between the dissimilar metals by making the length of the path along which knife-line corrosion is liable to occur between the metals towards the load bearing area of the weld exceed the expected extent of knife-line corrosion over the design life of the structure. The interface exposed to the corrosive environment may be displaced from the load bearing region of the weld by providing a layer of metal e.g. the weld metal over, and fused to the surface of the one of the components with which the metal of the layer forms a knife-line corrodable combination. That surface may include the surface of an appendage integral with or welded to the component.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: March 9, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: Richard Fawcett
  • Disperse monoazo dyes, their preparation and their application to synthetic textile materials
    Patent number: 4318851
    Abstract: Disperse monoazo dyes having the formula: ##STR1## wherein X represents chlorine or bromine, each of R.sup.1 and R.sup.2 independently represents alkyl or alkenyl and R.sup.3 represents hydrogen, alkyl or acylamino.The dyes give bright red shades on synthetic textile materials.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: March 9, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Peter W. Austin, Brian R. Fishwick
  • Apparatus and method for the continuous manufacture of foam board
    Patent number: 4318761
    Abstract: A plastics foam-forming mixture (31), e.g. a polyurethane or polyisocyanurate foam mix, deposited from one or more static dispensers (19) is metered through two spaced opposed members (14 and 18) forming between them a metering gap. At least one of the members having a plurality of faces of different profile and being rotatable to present to the other member a selected face appropriate to the thickness of foam board to be produced. Reduces "crowning" of foam boards while permitting foam boards of different thicknesses to be made without having to replace metering bars.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: March 9, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Edward Dockray, Victor F. Hodgson
  • Coating of solids
    Patent number: 4318941
    Abstract: A process wherein solid particles are coated with either liquids or solids while the particles are moving as a uniform layer over the surface of a rotating body and subsequently discharged from the surface by centrifugal force. Two forms of coating apparatus designed to coat prills are shown, the preferred apparatus having a flexible conical disc carrying a layer of existing material which touches the rim of the rotating body from which the solid is discharged.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: March 9, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: John E. Gillett, John Isherwood, Richard A. Hann, Philip Norton-Berry, Margaret L. Steel
  • Alkanolamine derivatives
    Patent number: 4318921
    Abstract: Novel 1-aryloxy-3-amidoamidoalkylamino-2-propanol derivatives, processes for their manufacture, pharmaceutical compositions containing them and methods of using them in the treatment of heart diseases. Representative of the compounds disclosed is 1-(o-cyanophenoxy)-3-.beta.-(benzamidoacetamido)ethylaminopropan-2-ol.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: March 9, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: Leslie H. Smith
  • Microbiological production of protein
    Patent number: 4317843
    Abstract: Growth of bacteria belonging to new species of genera Pseudomonas, Microcyclus and Hyphomicrobium upon culture media comprising sources of assimilable carbon, for example oxygenated hydrocarbons, and inorganic nutrients to produce protein compositions and/or other fermentation products, for example amino acids. The protein compositions produced are suitable for use as protein supplements in human and animal foods.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: March 2, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: David G. MacLennan, John C. Ousby, Terence R. Owen, David C. Steer
  • Process for the manufacture of p-hydroxybenzyl cyanide
    Patent number: 4317781
    Abstract: An improved process for the preparation of p-hydroxybenzyl cyanide by the reaction of p-hydroxybenzyl alcohol with an alkali metal cyanide, by carrying out the process in the presence of an alkyl formate, especially n-propyl formate. The cyanide product is a valuable intermediate for the preparation of the .beta.-adrenergic blocking agent atenolol.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: March 2, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: Jonathan Hutton
  • Recovery of bromine from effluent gases in the oxidation of substituted aromatics to form aromatic carboxylic acids
    Patent number: 4317919
    Abstract: In the oxidation of a substituted aromatic compound such as p-xylene using a heavy metal catalyst promoted by bromine the effluent gases from the oxidation contain methyl bromide and are treated for the recovery of bromine. A variety of methods are described whereby the bromine may be recovered, preferably in a form suitable for reuse in the oxidation process.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: March 2, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Peter J. Jones, David J. Royall
  • Production of maleic acid and anhydride
    Patent number: 4317777
    Abstract: Hydrocarbons, particularly n-butane, are oxidized to acid anhydrides, especially maleic anhydride, by contacting them at concentrations above the flammable limit with oxygen in the presence of a vanadium/phosphorus mixed oxide catalyst having a surface area of at least 10 m.sup.2 /g. The concentration of inert gas is more than 70 molar percent and the oxygen concentration is greater than 13 molar percent.
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: March 2, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Raymond Higgins, Graham J. Hutchings
  • Herbicidal pyridine compounds
    Patent number: 4317913
    Abstract: Herbicidal 3- and/or 5-halogenomethyl-pyrid-2-yloxyphenoxy compounds and processes for making and using the same. Intermediates for making these compounds and their preparation are also disclosed. Thus, for example, 2-chloro-5-trichloromethylpyridine is prepared by a liquid phase chlorination of 3-methylpyridine under the influence of ultra violet light.
    Type: Grant
    Filed: August 27, 1980
    Date of Patent: March 2, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: David Cartwright
  • Detergent composition
    Patent number: 4316812
    Abstract: A liquid detergent composition which comprises a dispersion of solids comprising one or more builders and a bleach, the solids having an average particle diameter of less than 10 microns in a substantially water free non-ionic liquid surfactant which has a pour point of less than 10.degree. C. is stable in the absence of dispersing agents for the solids.
    Type: Grant
    Filed: December 4, 1979
    Date of Patent: February 23, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Roger I. Hancock, Kathleen M. Morrison
  • Dimerization process
    Patent number: 4316857
    Abstract: A process for the dimerization of acrylonitrile to dicyanobutene and methylene-glutaronitrile under the influence of a phosphinite or phosphonite catalyst uses as solvent a mixture of proton-donating organic solvent, an aromatic hydrocarbon solvent and an aliphatic hydrocarbon solvent in a specified ratio so facilitating product isolation by phase separation or liquid/liquid extraction.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: February 23, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventor: Arthur H. Gilbert
  • Electrostatically sprayable insecticidal formulations
    Patent number: 4316914
    Abstract: An electrostatically sprayable insecticidal formulation comprising a solution of from 0.5 to 50% of permethrin or like compound in an organic solvent medium, the medium being formulated so that the formulation has a resistivity at 20.degree. C. in the range 1.times.10.sup.6 to 1.times.10.sup.10 ohm centimeter and a viscosity at 20.degree. C. of 5 to 50 centistokes.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: February 23, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Ronald A. Coffee, Brian W. Young, Michael R. Middleton
  • Adducts of furoxan and vicinal diketones
    Patent number: 4316034
    Abstract: Process for the preparation of organic isocyanates in which a furoxan is heated in the presence of a vicinal diketo compound containing two adjacent keto carbonyl groups. When the furoxan ring is fused to an organic ring system di-isocyanates are produced. An adduct of the furoxan and the diketo compound may be isolated from the reaction mixture and used as a stable isocyanate precursor, for example, a "one-pot" polyurethane composition.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: February 16, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: John Crosby, John A. Milner