Patents Assigned to Witco
  • Patent number: 6136900
    Abstract: The invention relates to a PVC composition comprising a stabilizer combination of (b) polyDHP of the formula I ##STR1## where the radicals T, L, R, R', R" are as defined in claim 1, (c) a subtance from the group consisting of crystalline hydrotalcites,crystalline or amorphous zeolites,crystalline or amorphous dawsonites, magadiites or kenyaites, disaccharide alcohols and sterically hindered amines containing the structural unit ##STR2## in which R.sup.0 is hydrogen or methyl, and (d) at least one zinc, aluminium or lanthanoid compound.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: October 24, 2000
    Assignee: Witco Vinyl Additives GmbH
    Inventors: Karl Josef Kuhn, Wolfgang Wehner
  • Patent number: 6133474
    Abstract: The present invention is directed to novel alkyl glyceryl ether disulfonate compositions (ADEDS), alkylphenol polyethoxy sulfate-sulfonates, and ethoxylated alkylphenol sulfonates, and novel methods of preparation and uses thereof.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: October 17, 2000
    Assignee: Witco Corporation
    Inventors: Khalid Rasheed, John Gray, Jeffrey J. Fulton
  • Patent number: 6127468
    Abstract: This invention describes the use of novel blocked mercaptosilanes, wherein the hydrogen atom of the mercaptan functionality has been substituted, in filled polymers. The blocked mercaptosilanes described are unique in that they allow the mixing of fillers with organic polymers to proceed while remaining inert toward coupling to the polymer. The coupling reactions of these blocked mercaptosilicon compounds are triggered by addition of an appropriate deblocking agent, which preferably is tetramethylthiuram monosulfide.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: October 3, 2000
    Assignee: CK Witco Corporation
    Inventors: Richard W. Cruse, Robert J. Pickwell
  • Patent number: 6124229
    Abstract: Disclosed is a process for preparing a supported metallocene catalyst by introducing, in a first stage, a gas stream comprising an organoaluminum compound, an inert support material and water, into a first gas phase reactor; allowing the mixture to react under conditions effective to form an aluminoxane supported on said inert support material; metering a second gas stream comprising a metallocene into said gas phase reactor; allowing said mixture to react under conditions effective to form a supported metallocene catalyst; and drying, in a second stage, said supported metallocene catalyst, wherein said drying is carried out in a gas phase reactor.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: September 26, 2000
    Assignee: Witco GmbH
    Inventors: Ralf-Jurgen Becker, Rainer Rieger
  • Patent number: 6110887
    Abstract: The invention relates to aqueous laundry fabric softener dispersions based on quaternary triethanolamine fatty acid esters having a defined ratio of triethanolamine to fatty acid, the fatty component having a specific degree of saturation.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: August 29, 2000
    Assignee: Witco Surfactants GmbH
    Inventors: Axel Euler, Michael Fender, Hans-Jurgen Kohle, Hans-Georg Schieber
  • Patent number: 6107259
    Abstract: An engine oil contains a lubricating oil and an overbased calcium sulfonate having a dispersion of calcite-core micelles, which engine oil has commercial haze free properties, namely a Hazitron test value of less than about 30 and more particularly less than about 15 to 10, and commercial anti-wear properties, namely exhibiting a 4-Ball wear test scar diameter of less than 0.4 mm. The detergent has a TBN of from 100 to 400 and yet a viscosity of no more than 100,000 cps at 25.degree. C. and usually 20,000 to 30,000 cps at 25.degree. C. The overbased calcium sulfonate detergent provides a stable dispersion of calcite-core sulfonate micelles in the oil. The calcite overbased sulfonate is substantially free of amorphous, vaterite and aragonite forms of the calcium carbonate. The method of producing the improved calcite-core dispersion overbased calcium sulfonate provides for reacting an overbased amorphous calcium sulfonate having a TBN of about 400 or more with a C.sub.1 to C.sub.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: August 22, 2000
    Assignee: Witco Corporation
    Inventors: Ronald J. Muir, Theo I. Eliades, Ken Niece, Wayne A. Mackwood
  • Patent number: 6103847
    Abstract: This invention discloses hydrophilic additives in polysiloxane gels, elastomers and coatings, and novel processes for producing them. The process comprises:(a) redistributing into polysiloxane-polyether copolymers an unsaturated silane or siloxane,(b) adding to the mixture of reagents a catalytically effective amount of a basic catalyst; and(c) heating the reaction mixture to effect reaction.Novel siloxane structures of unsaturated aliphatic modified polyerther siloxane copolymers are also taught.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: August 15, 2000
    Assignee: Witco Corporation
    Inventors: Kenrick M. Lewis, Hua Yu
  • Patent number: 6100356
    Abstract: A method of (co)polymerizing vinyl and/or diene monomers comprising contacting the monomers with a (co)polymeriztion composition under conditions effective to (co)polymerize the monomers, wherein the (co)polymerization composition comprises: (a) an organic peroxide component, and (b) a heteropoly acid, in an amount effective to lower the onset temperature of decomposition of the organic peroxide component with the proviso that if the heteropoly acid is phosphomolybdic acid the organic peroxide is not a peroxydicarbonate.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: August 8, 2000
    Assignee: CK Witco Corporation
    Inventors: Peter Frenkel, Ted M. Pettijohn
  • Patent number: 6093222
    Abstract: A defoamer system for diesel fuel which uses a synergistic blend of silicone polymers substituted respectively with polyhydric and polyether groups, or a silicone polymer having a mixture of polyhydric, polyether and phenol substituents thereon. The defoamer system provides low silicone treat rate, and compatibility with additive packages.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: July 25, 2000
    Assignee: CK Witco Corporation
    Inventors: Wojciech Grabowski, Rolf Haubrichs
  • Patent number: 6084013
    Abstract: A description is given of stabilizer combinations comprisingA) at least one compound of the formula I ##STR1## in which R.sub.1 and R.sub.2 independently of one another are C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.6 -alkenyl, C.sub.5 -C.sub.8 -cycloalkyl which is unsubstituted or substituted by 1 to 3 C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy-, C.sub.5 -C.sub.8 -cycloalkyl or hydroxyl groups or chlorine atoms, or are C.sub.7 -C.sub.9 -phenylalkyl which is unsubstituted or substituted on the phenyl ring by 1 to 3 C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.5 -C.sub.8 -cycloalkyl or hydroxyl groups or chlorine atoms, andR.sub.1 and R.sub.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: July 4, 2000
    Assignee: Witco Vinyl Additives GmbH
    Inventor: Wolfgang Wehner
  • Patent number: 6077877
    Abstract: The present invention provides amine/amide catalysts for use in catalyzing the formation of polyurethane. The amine/amide catalysts, which have low fugitivity due to their reactivity with isocyanates, and good catalytic activity, have the structure ##STR1## wherein Q is C.sub.z H.sub.2z+1, or (CH.sub.2).sub.n N(R.sup.3).sub.k T, T is a monovalent C.sub.1 -C.sub.4 alkyl, amino-C.sub.1 -C.sub.4 -alkyl, mono-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.4 -alkyl, or di-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.4 -alkyl group, or T is a divalent alkyl, amine substituted alkyl, alkylaminoalkyl, or alkoxyalkyl group which forms with the nitrogen atom shown in structure (I) to which T is attached a cyclic structure which incorporates up to 6 carbon atoms in the ring as well as the nitrogen atom shown in structure (I), which cyclic structure may be substituted with C.sub.1 to C.sub.4 alkyl;k=0 or 1, being 1 if T is a monovalent group and 0 if T is a divalent group; R.sup.2 .dbd.H or C.sub.z H.sub.2z+1 ; R.sup.3 .dbd.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: June 20, 2000
    Assignee: CK Witco Corporation
    Inventors: Richard M. Gerkin, K. Kaye Robinson
  • Patent number: 6071977
    Abstract: An improved process is provided for the preparation of siloxane-oxyalkylene and siloxane-alkyl copolymer compositions via a hydrosilation reaction in the presence of high boiling point natural vegetable oils as the reaction solvent. The reaction solvent need not be removed from the block copolymer product, and indeed is beneficial to remain with the copolymer particularly when the copolymer is used as a surfactant for polyurethane foam formulations. Soybean oil and linseed oil are the preferred high boiling natural oil solvents when the copolymer product is to be used in the preparation of the surfactants for polyurethane foams. High resiliency polyurethane foam prepared with these natural oils present in the surfactant preparation afforded improved compression sets, wet compression sets and humid aged compression sets.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: June 6, 2000
    Assignee: CK Witco Corporation
    Inventors: Paul E. Austin, Edmond J. Derderian, Robert A. Kayser
  • Patent number: 6069200
    Abstract: Curable compositions comprising stable, water dispersible, curable polymers containing sterically hindered alkoxylated silane groups and acid groups blocked by fugitive bases at 0.1 to 75 weight percent of the total composition and water at 99.9 to 25 weight percent of the total composition are taught herein, as well as methods for the use and manufacture thereof. Additional components, such as emulsifiers, buffers and thickeners are also taught. These compositions are useful as adhesives, sealants and paints. The compositions have improved properties including solvent resistance, adhesion, hardness, abrasion resistance and mar resistance.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: May 30, 2000
    Assignee: CK Witco Corporation
    Inventors: Ming J. Chen, Frederick D. Osterholtz
  • Patent number: 6054625
    Abstract: The process of preparing geminal dihydroperoxy alkyl peroxides and 1,1-dihydroperoxydialkyl peroxides, which comprises reacting an aqueous composition comprising a ketone with hydrogen peroxide in the presence of a heteropolyacid.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: April 25, 2000
    Assignee: Witco Corporation
    Inventors: Peter Frenkel, Delphine Nwoko, Ted M. Pettijohn
  • Patent number: 6051620
    Abstract: Polyester polyols which contain at least one dihydrazide linkage --C(.dbd.O)--NHNH--C(.dbd.O)-- reduce the incidence of scorching when used as a reactant in the manufacture of polyurethane foam. Also disclosed are compounds of structures (2) and (3):D--HN(--NH--C(.dbd.O)--R--C(.dbd.O)NH).sub.0-1 --NH--D (2)(A--C(.dbd.T)--NH)--.sub.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: April 18, 2000
    Assignee: CK Witco Corporation
    Inventors: Ibrahim Bechara, Thomas R. Baranowski, James Stogis, Thomas H. Morong
  • Patent number: 6039800
    Abstract: Disclosed is a process of making foamed compositions of water, gypsum, and either or both of alpha-olefin sulfonates and/or amphoteric surfactants of formula (a) or (b)R.sup.4 --(OC.sub.3 H.sub.6).sub.0-1 --(C(O)NH(CH.sub.2).sub.1-3).sub.0-1 --N(Z.sup.1) (Z.sup.2).sub.0-1 --ZCOOX (a)R.sup.4 --(OC.sub.3 H.sub.6).sub.0-1 --(C(O)NH(CH.sub.2).sub.1-3).sub.0-1 --N(Z.sup.1) (Z.sup.2).sub.0-1 --ZSO.sub.3 X (b)wherein X is --H, a sodium, calcium, potassium, lithium or ammonium cation, or an amine of the formula --N.sup.+ H(C.sub.1-20 alkyl).sub.2 or --N.sup.+ H.sub.2 (C.sub.1-20 alkyl); or when a Z.sup.2 group is present there is no X group on --ZCOOX; R.sup.4 is straight or branched alkyl or alkylene, or cyclic or heterocyclic aromatic which is optionally substituted with alkyl, and contains 4 to 40 carbon atoms and 0-5 carbon-carbon double bonds; Z.sup.1 and Z.sup.2 are independently of each other H, C.sub.f H.sub.2f+1 or C.sub.f H.sub.2f OH wherein f is 1 to 6 and preferably 1, 2 or 3 or, in formula (a), one of Z.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: March 21, 2000
    Assignee: Witco Corporation
    Inventor: Mojahedul Islam
  • Patent number: 6037008
    Abstract: Emulsions comprising a water insoluble or semi-soluble silane or mixtures of such silanes have been found useful when used alone or formulated into aqueous primer systems to improve the adhesion of sealants, adhesives or coatings to a variety of substrates. These aqueous primers are suitable for both inorganic and organic substrates having either porous or non-porous surfaces. In many cases they have been found to outperform solvent based primers. Primers of this type can be used with a variety of waterborne or solvent based sealants, adhesives or coatings including acrylic or polyurethane latexes, high solid polyurethanes, epoxies and silicones. When used with waterborne systems, it is not necessary to wait for the primer to dry before application of the sealant, adhesive or coating.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: March 14, 2000
    Assignee: CK Witco Corporation
    Inventors: Misty Weiyu Huang, Bruce A. Waldman
  • Patent number: 6028046
    Abstract: Washing dyed fabrics in compositions which comprise a polyamine alkoxylate component of formula (A) ##STR1## and mixtures thereof, wherein R is an alkyl or alkenyl radical containing 6 to 25 carbon atoms and 0 to 3 carbon-carbon double bonds, and each ALK is ethyl or propyl, v, w, x and y are each 1-20, n is 0-10, (v+w+x+y) is (3+n) to 20, affords cleaning while inhibiting dye loss and dye transfer from the fabric.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: February 22, 2000
    Assignee: Witco Corporation
    Inventor: Shoaib Arif
  • Patent number: 6015920
    Abstract: A process for hydrosilation reactions between olefins and hydrosilanes or hydrosiloxanes wherein a portion of the reactor output is recycled continuously to the reactor.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: January 18, 2000
    Assignee: CK Witco Corporation
    Inventors: Curtis L. Schilling, Patrick James Burns, James Stephen Ritscher, Mark Paul Bowman, Thomas Edgeworth Childress, Michael Ray Powell, Eric Michael Graban
  • Patent number: 6013711
    Abstract: The instant invention provides a method for improving the miscibility of the lower molecular weight unsaturated siloxane-polyether copolymers with the .alpha., .omega.-divinylpolysiloxanes without loss of storage stability, or delay of cure at the vulcanization temperature, or loss of permanent hydrophilicity or other desirable features of the cured polysiloxane. The compositions of the present invention comprise one or more .alpha., .omega.-divinylpolysiloxanes, unsaturated polysiloxane-polyether copolymers having from 2 to 5 silicon atoms per molecule which are preferably trisiloxanes, and a compatibilizing additive. The permanently hydrophilic, rapidly wettable polysiloxane compositions yield static water contact angles <50.degree. dynamic advancing contact angles of less than about 100.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: January 11, 2000
    Assignee: CK Witco Corporation
    Inventors: Kenrick M. Lewis, Hua Yu