Patents by Inventor Chempolil T. Mathew

Chempolil T. Mathew has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5514766
    Abstract: The invention relates to the following novel silanes: methyl vinyl bis-(methyl isobutyl ketoximino) silane; methyl vinyl bis-(methyl amyl ketoximino) silane; methyl tris-(methyl isobutyl ketoximino) silane; vinyl tris-(methyl isobutyl ketoximino) silane; methyl tris-(methyl amyl ketoximino) silane; vinyl tris-(methyl amyl ketoximino) silane; tetrakis-(methyl isobutyl ketoximino) silane; tetrakis-(methyl amyl ketoximino) silane; methoxy tris-(methyl isobutyl ketoximino) silane; ethyl tris-(methyl isobutyl ketoximino) silane; ethoxy tris-(methyl isobutyl ketoximino) silane; methoxy tris-(methyl amyl ketoximino) silane; ethyl tris-(methyl amyl ketoximino) silane; ethoxy tris-(methyl amyl ketoximino) silane; and mixtures thereof.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: May 7, 1996
    Assignee: AlliedSignal Inc.
    Inventors: Chempolil T. Mathew, Edward T. Asirvatham, Jeffrey A. Knepper, Dale R. Flackett
  • Patent number: 5405984
    Abstract: The invention relates to the following novel silanes: methyl vinyl bis-(methyl isobutyl ketoximino) silane; methyl vinyl bis-(methyl amyl ketoximino) silane; methyl tris-(methyl isobutyl ketoximino) silane; vinyl tris-(methyl isobutyl ketoximino) silane; methyl tris-(methyl amyl ketoximino) silane; vinyl tris-(methyl amyl ketoximino) silane; tetrakis-(methyl isobutyl ketoximino) silane; tetrakis-(methyl amyl ketoximino) silane and mixtures thereof. These compounds are useful as intermediates in one-component room-temperature-curing sealant, adhesive and coating applications among other silicone polymer applications.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: April 11, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Chempolil T. Mathew, Edward T. Asirvatham, Jeffrey A. Knepper, Dale R. Flackett
  • Patent number: 5405930
    Abstract: The invention relates to the following novel silanes: methyl vinyl bis(methyl isobutyl ketoximino) silane; methyl vinyl bis-(methyl amyl ketoximino) silane; methyl tris-(methyl isobutyl ketoximino) silane; vinyl tris-(methyl isobutyl ketoximino) silane; methyl tris-(methyl amyl ketoximino) silane; vinyl tris-(methyl amyl ketoximino) silane; tetrakis-(methyl isobutyl ketoximino) silane; tetrakis-(methyl amyl ketoximino) silane methoxy tris-(methyl isobutyl ketoximino) silane; ethyl tris-(methyl isobutyl ketoximino) silane; ethoxy tris-(methyl isobutyl ketoximino) silane; methoxy tris-(methyl amyl ketoximino) silane; ethyl tris-(methyl amyl ketoximino) silane; ethoxy tris-(methyl amyl ketoximino) silane; and mixtures thereof.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: April 11, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Chempolil T. Mathew, Edward T. Asirvatham, Jeffrey A. Knepper, Dale R. Flackett
  • Patent number: 5359108
    Abstract: The invention relates to the following novel silanes: methyl vinyl bis-(methyl isobutyl ketoximino) silane; methyl vinyl bis-(methyl amyl ketoximino) silane; methyl tris-(methyl isobutyl ketoximino) silane; vinyl tris-(methyl isobutyl ketoximino) silane; methyl tris(methyl amyl ketoximino) silane; vinyl tris-(methyl amyl ketoximino) silane; tetrakis-(methyl isobutyl ketoximino) silane; tetrakis-(methyl amyl ketoximino) silane and mixtures thereof. These compounds are useful as intermediates in one-component room-temperature-curing sealant, adhesive and coating applications among other silicone polymer applications.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: October 25, 1994
    Assignee: AlliedSignal Inc.
    Inventors: Chempolil T. Mathew, Edward T. Asirvatham, Jeffrey A. Knepper, Dale R. Flackett
  • Patent number: 5276187
    Abstract: This invention relates to novel ketoxime carbonates and a process for the synthesis of ketoxime carbonates generally. Ketoxime carbonates are useful in a variety of applications. They may be used for example as pesticides, pharmaceuticals, weed control agents and dye stuff intermediates.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: January 4, 1994
    Assignee: AlliedSignal Inc.
    Inventors: Halasya Ramanathan, Chempolil T. Mathew
  • Patent number: 4922017
    Abstract: A process for preparing an aromatic aldoxime, such as benzaldehyde oxime, by reacting the corresponding, .alpha.,.alpha.-dihalide, such as benzal chloride, with a hydroxylamine salt in the presence of an excess of an aqueous base sufficient to maintain the product oxime in solution. Organic impurities may be phase separated from the reaction mixture. Thereafter, the aqueous solution containing product oxime is neutralized to separate an oxime phase, which may be recovered by decanting or solvent extraction.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: May 1, 1990
    Assignee: Allied-Signal Inc.
    Inventor: Chempolil T. Mathew
  • Patent number: 4868334
    Abstract: The present invention provides a simple process for the production of anhydrous oxime by the separation of the oxime from an aqueous solution. The process is advantageous because the potential explosive hazards of current processes are eliminated and the oxime is easily separated from the aqueous phase. The process comprises the steps of:(a) vaporizing an aqueous oxime solution;(b) vaporizing a water-immiscible organic solvent for the oxime wherein the boiling point of the solvent is lower than the boiling point of the oxime;(c) combining the vapors together;(d) condensing the collected vapors;(e) removing the organic phase of the condensate from the aqueous phase; and(f) recovering anhydrous oxime from the removed organic phase.The anhydrous oxime produced by the present process if useful in applications such as isocyanate condensation and carbamate formation.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: September 19, 1989
    Assignee: Allied-Signal Inc.
    Inventors: Chempolil T. Mathew, Stephen E. Belsky, Earl E. McKnight
  • Patent number: 4743701
    Abstract: Organo N-hydroxyimidates are prepared by reacting an organonitrile with an organic alcohol and with a hydrogen halide, in the presence of an organic solvent (which may include an excess of the organonitrile reactant), under anhydrous conditions, to form the corresponding organoimidate hydrohalide, and then reacting said organoimidate hydrohalide with a hydroxylamine salt and ammonia gas in the presence of an organic solvent (which can be the excess organonitrile from the first step), under anhydrous conditions, to produce the corresponding organo N-hydroxyimidate.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: May 10, 1988
    Assignee: Allied Corporation
    Inventor: Chempolil T. Mathew
  • Patent number: 4707294
    Abstract: Solid hydroxylammonium sulfate is reacted with an alcohol solution of an alkali metal hydroxide or alkoxide to produce an alcoholic hydroxylamine liquid phase and a sulfate-containing solid phase. The liquid phase may be used for further reactions such as oxidations, hydroxamic acid production or neutralization to other hydroxylammonium salts. The different bases behave differently with regard to suitable and preferable solvents and temperatures.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: November 17, 1987
    Assignee: Allied Corporation
    Inventors: Chempolil T. Mathew, Harry E. Ulmer
  • Patent number: 4614813
    Abstract: This invention relates to a process for preparing N-hydroxyl organo imidate compounds by reacting an oxime compound with a halogenating agent and reacting the resulting 1-halosubstituted oxime compound with the alkali metal or alkaline earth metal salt of an alcohol.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: September 30, 1986
    Assignee: Allied Corporation
    Inventors: Chempolil T. Mathew, Harry E. Ulmer
  • Patent number: 4551324
    Abstract: Solid hydroxylammonium sulfate is reacted with an alcohol solution of an alkali metal hydroxide or alkoxide to produce an alcoholic hydroxylamine liquid phase and a sulfate-containing solid phase. The liquid phase is further reacted with an acid other than sulfuric acid to form another hydroxylammonium salt. The different bases behave differently with regard to suitable and preferably solvents and temperatures.
    Type: Grant
    Filed: September 23, 1983
    Date of Patent: November 5, 1985
    Assignee: Allied Corporation
    Inventors: Chempolil T. Mathew, Harry E. Ulmer
  • Patent number: 4551323
    Abstract: Solid hydroxylammonium sulfate is reacted with an alcohol solution of an alkali metal hydroxide or alkoxide to produce an alcoholic hydroxylamine liquid phase and a sulfate-containing solid phase. The liquid phase may be used for further reactions such as oxidations, hydroxamic acid production or neutralization to other hydroxylammonium salts. The different bases behave differently with regard to suitable and preferable solvents and temperatures.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: November 5, 1985
    Assignee: Allied Corporation
    Inventors: Chempolil T. Mathew, Harry E. Ulmer
  • Patent number: 4507248
    Abstract: Solid hydroxylammonium sulfate is reacted with an alcohol solution of an alkali metal hydroxide or alkoxide to produce an alcoholic hydroxylamine liquid phase and a sulfate-containing solid phase. The liquid phase is used for further reactions such as oximations and hydroxamic acid production. The different bases behave differently with regard to suitable and preferable solvents and temperatures.
    Type: Grant
    Filed: September 23, 1983
    Date of Patent: March 26, 1985
    Assignee: Allied Corporation
    Inventors: Chempolil T. Mathew, Harry E. Ulmer
  • Patent number: 4400527
    Abstract: A Group IVa metal halide such as methyl trichlorosilane is reacted with an oxime compound such as methyl ethyl ketone oxime in the absence of a base to form in high yields a product oximinosilane, oximinogermane or oximinostannane (e.g. methyl tris(methyl ethyl ketoximo)silane) and a by-product oxime hydrohalide. The oxime above that found in the product may be recovered by neutralization of the by-product oxime hydrohalide.
    Type: Grant
    Filed: December 17, 1981
    Date of Patent: August 23, 1983
    Assignee: Allied Corporation
    Inventors: Chempolil T. Mathew, Harry E. Ulmer
  • Patent number: 4380660
    Abstract: A silicon halide such as methyl trichlorosilane is reacted with an alcohol such as isopropanol and an oxime such as methyl ethyl ketone oxime. Byproduct oxime hydrohalide is formed in all cases. With higher amounts of alcohol, alkoxysilane (e.g. methyl triisopropoxysilane) is the sole or major product. With lower amounts of alcohol, alkoxy-oxminosilanes (e.g. methyl diisopropoxy(methyl ethyl ketoximo)silane and methyl isopropoxy bis(methyl ethyl ketoximo)silane) are the major products.
    Type: Grant
    Filed: July 1, 1982
    Date of Patent: April 19, 1983
    Assignee: Allied Corporation
    Inventors: Chempolil T. Mathew, Harry E. Ulmer
  • Patent number: 4349418
    Abstract: Methylnaphthalenes, indole and other tar bases are recovered from a base-extracted coal tar distillation fraction. In one form, an aqueous salt solution of pH 0.5-3 extracts other tar bases from the starting material, and thereafter both products are recovered from the raffinate by several alternate methods including ethylene glycol extraction and extractive distillation. In other forms, the starting material is extracted with ethylene glycol and the extract is distilled to recover several products including indole. The raffinate of ethylene glycol extraction contains methylnaphthalenes and other hydrocarbons and can be purified to solvent-grade material.
    Type: Grant
    Filed: July 28, 1981
    Date of Patent: September 14, 1982
    Assignee: Allied Corporation
    Inventors: Stephen E. Belsky, Chempolil T. Mathew
  • Patent number: 4256668
    Abstract: An organic, substantially water-insoluble oxime product is recovered from the liquid reaction mixture of water, ammonium sulfate and the oxime product. First the reaction mixture is separated into a first liquid layer containing an aqueous ammonium sulfate solution and a second liquid layer containing an emulsion of the oxime product as the continuous phase and aqueous ammonium sulfate as the discontinuous phase. These layers are separated and the second liquid layer is contacted with solid ammonium sulfate for a time sufficient to agglomerate the discontinuous phase. The agglomerated discontinuous phase is then removed from the continuous phase. Thereafter, either a lites fraction can be distilled from the continuous phase or the oxime product can be distilled from the continuous phase, or both. The process is particularly applicable to the production of oximes such as Aldicarb oxime, cyclohexanone oxime and methylethylketoxime from aqueous reaction mixtures in which by-product ammonium sulfate is formed.
    Type: Grant
    Filed: June 20, 1979
    Date of Patent: March 17, 1981
    Assignee: Allied Chemical Corporation
    Inventors: Chempolil T. Mathew, Donald Pickens
  • Patent number: 4237069
    Abstract: An alpha-halo-aldehyde is reacted in aqueous media with an hydroxylamine-generating reagent at a pH between about 2 and about 9 to form the corresponding alpha-hydroxy-oxime. The products are useful as stabilizers and as complexing agents and as intermediates to unsaturated oximes, unsaturated nitriles and carbamate-type pesticides.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: December 2, 1980
    Assignee: Allied Chemical Corporation
    Inventors: Harry E. Ulmer, Chempolil T. Mathew