Patents Examined by Mayer Weinblatt
  • Patent number: 4338210
    Abstract: A low temperature bleach system comprises a peracid percursor system and bromide ions. The bromide ions may be supplied by sodium bromide. A theoretical peracid to bromide equivalent ratio between 2:1 and 1:2 is preferred, but dye transfer and hygiene benefits are possible with a ratio up to 1:32. The precursor system is typically diphthaloyl peroxide or sodium perborate plus tetraacetyl ethylenediamine (TAED). If the perborate is in excess, a scavenger such as catalase should be included. The system may be used as such or incorporated in a conventional detergent base.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: July 6, 1982
    Assignee: Lever Brothers Company
    Inventors: Anthony H. Clements, Leigh, Arthur G.
  • Patent number: 4337163
    Abstract: In liquid, pourable, thickened chlorine bleaching compositions, in which the thickening is produced by at least two different detergent active compounds, a buffer salt is included to improve their stability at lower chlorine levels and at reduced pH values. Typically, a composition comprises an aqueous solution of alkali-metal hypochlorite, thickened by means of a tertiary amine oxide and a saturated fatty acid soap, and contains an alkali-metal orthophosphate buffer system, at a chlorine content of 1-10% and a pH of 10-12.5. The compositions are useful in bleaching operations, especially in bleaching hard surfaces such as toilets, tiles, kitchen sinks, etc.
    Type: Grant
    Filed: November 21, 1980
    Date of Patent: June 29, 1982
    Assignee: Lever Brothers Company
    Inventor: Ulrich Schilp
  • Patent number: 4337164
    Abstract: A low temperature bleach system comprises an organic peracid and bromide ions in the absence of aldehydes and ketones. The bromide ions may be supplied from sodium bromide and typical peracids include diperisophthalic acid and monoperoxyphthalic acid. The peracid to bromide equivalent ration between 2:1 and 1:2 is preferred, but dye transfer and hygiene benefits are possible with a ratio up to 1:50. The system may be used as such or incorporated in a conventional detergent base.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: June 29, 1982
    Assignee: Lever Brothers Company
    Inventor: Anthony H. Clements
  • Patent number: 4333844
    Abstract: A particulate alkaline detergent composition is disclosed which is suitable for washing fabrics and exhibiting good detergency, stability and bleaching while the level of inorganic material deposited on the fabrics is at an acceptably low level. The composition comprises a synthetic detergent active, a mixture of tripolyphosphate and orthophosphate in the ratio of 20:1 to 3:1 and a mixture of a peroxygen bleach such as perborate and a bleach activator such as tetraacetylethylenediamine. The phosphates constitute from 10 to 40% of the composition while the bleach system constitutes from 5 to 30%. The amount of pyrophosphate, if any, should be kept below 5%. Soap may be added to the composition. The compositions may be prepared by mixing the bleach system and optionally the alkali metal phosphate with a spray dried powder containing the remaining constituents.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: June 8, 1982
    Assignee: Lever Brothers Company
    Inventors: Peter M. Duggleby, Francis G. Foster, Jacobus R. Nooi
  • Patent number: 4332693
    Abstract: A chemical agent for treating oily emulsions and the like in industrial waste water includes a homogenous mixture of talc; adipic acid; aluminum sulfate; TIXOTON, a registered trademark; a flocculating agent; lime and bentonite. The process for producing the agent involves the steps of introducing the compounds, one at a time, and in the order listed above into a mixing chamber wherein the mixture is vigorously stirred until homogenity is achieved.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: June 1, 1982
    Assignee: American Colloid Company
    Inventor: Ralf F. Piepho
  • Patent number: 4332691
    Abstract: A photobleaching liquid cleaning composition contains 1% to 79.9% by weight of detersive surfactant, with or without a detergency builder; 0.1 to 40% by weight of a chlorite, and at least about 20% by weight of a liquid base, the composition yielding a pH of at least 6 when dissolved in water at a concentration of about 0.5 g/l.The composition is suitable for the laundering of fabrics as well as for the use in the manual cleaning of dishes or in general purpose cleaning of hard surfaces.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: June 1, 1982
    Assignee: Lever Brothers Company
    Inventor: Stuart W. Beavan
  • Patent number: 4332692
    Abstract: An improved method for laundering fabrics to remove oily soil is disclosed, wherein fabrics are contacted with a washing liquor comprising an aqueous solution of a nonionic surfactant system and other ingredients. The washing temperature and ingredients of the washing liquor are selected so that washing occurs at a temperature which is substantially above the cloud point of the washing liquor and below the phase coalescence temperature of the washing liquor. Compositions useful in the practice of this invention are also disclosed, comprising a nonionic surfactant to which is added one or more strong electrolytes. Such compositions may be diluted with water to form a washing liquor which has cloud point and phase coalescence temperatures which are tailored for washing, within the scope of the present method, at a temperature preferred in the art. Conventional sequestering detergency builders and adjuvants may be added to the compositions as desired to optimize the cleaning result.
    Type: Grant
    Filed: June 5, 1980
    Date of Patent: June 1, 1982
    Assignee: The Procter & Gamble Company
    Inventors: Nicholas S. Payne, Thomas D. Storm, Theodore C. Stephens
  • Patent number: 4330439
    Abstract: The electric device according to the present invention has as its constituents the insulating materials and elements comprising films of synthetic resin, for instance, polypropylene, impregnated with 1-phenyl-2-ethylphenylethane and/or 1-phenyl-2-isopropylphenylethane.According to the present invention, insulating oils having favorable compatibility with the film of synthetic resin such as polypropylene and favorable affinity to metals and having low viscosity have been provided, and in addition, electric devices excellent in properties of withstanding a high voltage and dielectric properties in a broad range of temperature from a low temperature to a high temperature have also been offered.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: May 18, 1982
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Nissin Electric Co., Ltd.
    Inventors: Mineaki Nishimatsu, Sadayoshi Mukai, Yoshinori Hayashi, Osamu Yamaguchi, Akira Ito, Nobuo Ahiko
  • Patent number: 4330422
    Abstract: A surface treating composition especially suited for cleaning and treating stainless steel comprising an aqueous emulsion of white mineral oil. An aerosol composition is also provided by the addition of a suitable amount of liquified normally gaseous propellant material.
    Type: Grant
    Filed: February 1, 1977
    Date of Patent: May 18, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Sheila A. Tesch
  • Patent number: 4329246
    Abstract: Alkaline dishwasher detergent composition having a specific critical pH, and a relatively high level of available chlorine, buffered with trisodium phosphate, containing a tripolyphosphate or pyrophosphate sequestering builder, and having a relatively high level of surfactant. The detergent composition is substantially free of highly alkaline materials and organic builders and preferably contains 2.0r alkali metal silicate and/or a preferred C.sub.17 -C.sub.19 polyethoxylate surfactant.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: May 11, 1982
    Assignee: The Procter & Gamble Company
    Inventors: Lawrence A. Gilbert, Robert A. Staab, Royal D. Collins, Charles R. Ries
  • Patent number: 4329244
    Abstract: Particles of peroxygenated compounds stabilized with polymers, possessing hydroxyl groups and carboxyl groups, which contain monomeric units of the formula ##STR1## where R.sub.1 and R.sub.2 represent hydrogen or an alkyl group containing from 1 to 3 carbon atoms and where M represents hydrogen, an alkali metal atom or an alkaline earth metal atom M-. The particles can be used in compositions having a bleaching action.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: May 11, 1982
    Assignee: Interox (Societe Anonyme)
    Inventors: Jean Brichard, Jean-Claude Colery, Pierre Sarot
  • Patent number: 4329245
    Abstract: A bleaching detergent composition comprising a nonionic detergent active compound, an inorganic persalt e.g. sodium perborate, an organic peracid precursor and a fluorescent agent, is stabilized by the use of a "sacrificial" ingredient. The "sacrificial" ingredient is an organic compound having a relative reactivity towards peracid and hydrogen peroxide of the order of 50:1 and a solubility in nonionic detergent active compounds at 25.degree. C. of at least 0.15 grams/liter, e.g. alkanolamines, and is used in relatively small amounts, generally from 0.1 to 5.0% by weight.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: May 11, 1982
    Assignee: Lever Brothers Company
    Inventors: Philip R. N. Eymond, Robert M. Butterworth
  • Patent number: 4329247
    Abstract: A method and formulation for removing stains from vinyl surfaces which comprises the use of a formulation containing a solvent selected from the group consisting of ethylene glycol monoalkyl ethers and ethylene glycol monoalkyl ether acetates, along with an aqueous solution of sodium hypochlorite or calcium hypochlorite in fumed silica. The formulation is highly useful for removing stains, particularly ink and other stains applied either accidentally or as an element of graffiti on vinyl surfaces.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: May 11, 1982
    Assignee: PDI, Inc.
    Inventor: Lewis B. Palmer
  • Patent number: 4328114
    Abstract: A process for producing absorbent granules from sodium tripolyphosphate or disodium hydrogen orthophosphate by simultaneously granulating and hydrating the salts to full hydration. The process produces granules which have good absorbency without the need for a drying step. The granules can be used for absorbing liquid nonionic surfactant or other liquid components of detergent powders such as perfumes.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: May 4, 1982
    Assignee: Lever Brothers Company
    Inventors: Richard S. Johnson, John K. Potter
  • Patent number: 4327153
    Abstract: The composite material is obtained by coating a fabric with a polymer. Coating is performed either in the cold state by dipping the fabric in a solution of polymer dissolved in a solvent or in the hot state by dipping in a molten polymer. The film of composite material thus obtained is then endowed with piezoelectric properties by subjecting it to an intense electric field.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: April 27, 1982
    Assignee: Thomson-CSF
    Inventor: Francois Micheron
  • Patent number: 4326975
    Abstract: Heat, particularly solar heat, is stored by a eutectic composition containing at least one saturated aliphatic hydrocarbon and at least one fatty acid having at least 10 carbon atoms.
    Type: Grant
    Filed: July 8, 1980
    Date of Patent: April 27, 1982
    Assignee: Compagnie Francaise de Raffinage
    Inventor: Andre Cadet
  • Patent number: 4326976
    Abstract: Particulate washing and bleaching compositions containing a peroxy compound and an alkali carbonate have their tendency to cake during storage reduced by incorporating within the compositions an alkaline aryl sulphonate, such as sodium methyl naphthalene sulphonate, and a water-insoluble inorganic compound, such as magnesium trisilicate. The compositions can be used for washing and bleaching textiles and fibers and cleaning hard surfaces.
    Type: Grant
    Filed: April 17, 1979
    Date of Patent: April 27, 1982
    Assignee: Interox
    Inventors: William R. Logan, Pierre Sarot, Edmond Bouillet
  • Patent number: 4326979
    Abstract: The invention relates to non-aqueous, built liquid detergent compositions. By a judicious choice of surfactant, solvent, alkaline material and builder, and the use of an at least partially hydrolyzed copolymer of maleic anhydride and ethylene or vinylmethylether, stable compositions are obtained.The method of making same requires first dissolving the copolymer in the solvent before the other ingredients are added.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: April 27, 1982
    Assignee: Lever Brothers Company
    Inventors: Jan Bus, Willem M. M. Mohlmann, Norman J. Pritchard
  • Patent number: 4325829
    Abstract: A particulate detergent composition for fabric conditioning includes, in addition to a detergency active material, from 10-40% of a mixture of tripolyphosphate and orthophosphate in the ratio of 20:1 to 3:1 together with 2-25% of a mixture of soap and an anionic polyelectrolyte in the ratio of 10:1 to 1:1. Any pyrophosphate present must be kept below 5%. The soap and polyelectrolyte result in reduced deposition of inorganic materials onto the fabrics. The preferred polyelectrolyte is sodium polyacrylate with a molecular weight of about 27,000. The composition may also include conventional additional ingredients.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: April 20, 1982
    Assignee: Lever Brothers Company
    Inventors: Peter M. Duggleby, Bernhard Kueter, Ronald M. Morris, Horst Poeselt, Hermann Rabitsch, Reginald V. Scowen
  • Patent number: 4325828
    Abstract: A solid detergent bleach composition adapted for use at substantially any washing temperature, comprising essentially a detergent active compound and a synergistic mixture of a solid organic peroxy acid compound e.g. diperoxyazelaic acid, an inorganic peroxy compound e.g. sodium perborate and a stabilizing sequestering agent. The composition which is preferably presented in the form of a particulate product, shows improved bleaching effect at substantially all washing temperatures. It has also advantages over compositions comprising bleaching activators in that it does not suffer from problems of in situ peroxy acid generation.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: April 20, 1982
    Assignee: Lever Brothers Company
    Inventor: Dennis Postlethwaite