Patents Assigned to Mobay Corporation
  • Liquid isocyanate prepolymers
    Patent number: 4914174
    Abstract: The present invention is directed to a liquid, storage-stable isocyanate prepolymer having an isocyanate group content of from 3 to 45% by weight, prepared by reacting(i) toluene diisocyanate and(ii) a polyamine of the structure ##STR1## where R represents an m-valent residue obtained by the removal of m functional groups from a compound having m functional groups and having a molecular weight of from 76 to about 10,000,X represents ##STR2## R.sup.1 represents hydrogen or an inert substituent, R.sup.2 represents hydrogen, a C.sub.1 to C.sub.5 alkyl group or a phenyl group,n is 1 or 2, andm is an integer of from 2 to 8.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: April 3, 1990
    Assignee: Mobay Corporation
    Inventor: William E. Slack
  • Liquid diphenylmethane diisocyanate compositions
    Patent number: 4910333
    Abstract: The present invention is directed to a process for the production of an isocyanate which is both stable and liquid at 25.degree. C. comprising reacting(i) diphenylmethane diisocyanate,(ii) an organic material containing two or more hydroxy groups, said organic material forming a product solid at 25.degree. C. when reacted with diphenylmethane diisocyanate in an amount such that the resultant solid product would have an isocyanate group content of from 10 to 30% by weight, and(iii) from 1 to 6% by weight, based on the combined weight of (i), (ii) and (iii), of tripropylene glycol, the amounts of components (i), (ii) and (iii) being such that the resultant product has an isocyanate group content of from about 10 to 30% by weight.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: March 20, 1990
    Assignee: Mobay Corporation
    Inventor: William E. Slack
  • Novel polyol composition and the use thereof in the preparation of rigid polyurethane foams
    Patent number: 4904707
    Abstract: The present invention is directed to a novel polyol composition and the use thereof in the preparation of a rigid polyurethane foam. More particularly the polyol composition is a blend of specific amounts of two polyols, one based on ortho-toluene diamine and the other based on a non-ortho-toluene diamine.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: February 27, 1990
    Assignee: Mobay Corporation
    Inventor: Soheila R. Lunney
  • Process for the production of fiberglass mats
    Patent number: 4904522
    Abstract: The present invention is directed to a process for the production of fiberglass mats by binding fiberglass with binders based on aqueous polyisocyanate emulsions which do not contain waterglass.The present invention is also directed to the fiberglass mats produced by this process.
    Type: Grant
    Filed: July 26, 1988
    Date of Patent: February 27, 1990
    Assignee: Mobay Corporation
    Inventor: Peter H. Markusch
  • Flexible polyurethane foam prepared from a novel polyisocyanate mixture
    Patent number: 4900760
    Abstract: The present invention is directed to a novel isocyanate mixture and the use thereof in producing a flexible polyurethane foam. The polyisocyanate mixture comprises(a) for 73 to 77% by weight of methylene bis(phenylisocyanate), said methylene bis(phenylisocyanate) having an isomer content as follows:(i) from about 30 to about 34% by weight of the 2,4' isomer,(ii) from about 60 to about 66% by weight of the 4,4'- isomer, and(iii) from about 3 to about 7% by weight, the 2,2' isomer, the percent of said isomers totaling 100%(b) from 23 to 27% by weight of higher functional methylene-bridged polyphenyl polyisocyanates, the percents of components (a) and (b) totaling 100%, and wherein said polyisocyanate mixture has an isocyanate group content of from about 30 to about 33.5 percent by weight.
    Type: Grant
    Filed: February 7, 1989
    Date of Patent: February 13, 1990
    Assignee: Mobay Corporation
    Inventor: James R. Jasenak
  • Liquid isocyanate prepolymers
    Patent number: 4898971
    Abstract: The present invention is directed to a liquid, storage-stable isocyanate prepolymer having an isocyanate group content of from 3 to 30% by weight, prepared by reacting(i) a methyl substituted diisocyanato diphenylmethane with(ii) a polyamine of the structure ##STR1## where R represents an m-valent residue obtained by the removal of m-functional groups from a compound having m-functional groups and having a molecular weight of from 76 to about 10,000,X represents --O--, ##STR2## R.sup.1 represents hydrogen or an inert substituent, R.sup.2 represents hydrogen, a C.sub.1 to C.sub.5 alkyl group or a phenyl group,n is 1 or 2, andm is an integer of from 2 to 8.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: February 6, 1990
    Assignee: Mobay Corporation
    Inventor: William E. Slack
  • Internal mold release agent for use in molding polyurethanes and/or polyureas
    Patent number: 4897428
    Abstract: The present invention is directed to an internal mold release agent, a composition containing the mold release agent, and a method of using such agent. The mold release broadly comprises zinc oleate or zinc laurate and a specific fatty amine derivative.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: January 30, 1990
    Assignee: Mobay Corporation
    Inventors: John E. Dewhurst, Gregory D. Williams, Robert M. Loring
  • Solution of 3-alkylthio-4-amino-6-tert.-butyl-1,2,4-triazin-5-ones in normally liquid n-aryl-n-alkoxyalkyl-haloacetamides
    Patent number: 4892577
    Abstract: In the preparation of an aqueous herbicidal composition containing a 3-alkylthio-4-amino-5-tert.-butyl 1,2,4-triazin-5-one and a N-aryl-N-alkoxyalkyl haloacetamide, the improvement which comprises dissolving the triazinone in at least twice its weight of the haloacetamide, and adding such solution to water. Advantageously an emulsifier is present and, if desired, prior to addition to water the solution is diluted with a solvent selected from the group consisting of a normally liquid optionally halogenated and/or alkylated aromatic hydrocarbon. This permits simplified preparation by the farmer of the aqueous dispersion he will apply to crops and fields.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: January 9, 1990
    Assignee: Mobay Corporation
    Inventor: Joseph Synek
  • Insecticidal compositions
    Patent number: 4891385
    Abstract: Sprayable aqueous insecticidal solutions are disclosed based on a mixture of fatty acid amide emulsifiers which have been acidified to a pH of less than about 7 with a water soluble acid and thickening agents which are preferably cellulose based together with an active known insecticidal ingredient propoxur, the solutions having a final pH in the range of about 3.5 to 7.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: January 2, 1990
    Assignee: Mobay Corporation
    Inventor: Joseph Synek
  • Reduction of free monomer in isocyanate adducts
    Patent number: 4888442
    Abstract: The present invention is directed to a process for reducing the free monomer content of polyisocyanate adduct mixtures wherein the adduct has an average isocyanate functionality of greater than about 1.8 which comprises treating the polyisocyanate adduct mixture in the presence of 2 to about 30 percent by weight of an inert solvent, based on the weight of the polyisocyanate mixture, in an agitated thin-layer evaporator under conditions sufficient to reduce the free monomer content of the polyisocyanate adduct mixture below that level which is obtainable in the absence of a solvent.
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: December 19, 1989
    Assignee: Mobay Corporation
    Inventors: Kenneth L. Dunlap, Peter H. Markusch, Clarence D. Ferrell
  • Internal mold release agent for use in reaction injection molding
    Patent number: 4886838
    Abstract: The present invention is directed to a novel mold release agent, a composition containing the mold release, and a method of use of the mold release. The mold release broadly comprises a zinc carboxylate and a specific salt of an amidine-group containing compound.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: December 12, 1989
    Assignee: Mobay Corporation
    Inventor: John E. Dewhurst
  • Liquid isocyanate prepolymers
    Patent number: 4885353
    Abstract: The present invention is directed to a liquid, storage-stable isocyanate prepolymer having an isocyanate group content of from 3 to 30% by weight, prepared by reacting(i) an isocyante selected from the group consisting of methylene bis(phenylisocyanates), polymethylene poly(phenylisocyanates), and mixtures thereof, and(ii) a polyamine of the structure ##STR1## where R represents an m-valent residue obtained by the removal of m-functional groups from a compound having m-functional groups and having a molecular weight of from 76 to about 10,000,X represents ##STR2## R.sup.1 represents hydrogen or an inert substituent, R.sup.2 represents hydrogen, a C.sub.1 to C.sub.5 alkyl group or a phenyl group,n is 1 or 2, andm is an integer of from 2 to 8.
    Type: Grant
    Filed: November 16, 1988
    Date of Patent: December 5, 1989
    Assignee: Mobay Corporation
    Inventor: William E. Slack
  • Liquid diphenylmetane diisocyanate compositions
    Patent number: 4883909
    Abstract: The present invention is directed to liquid, modified isocyanates prepared by reacting 4,4'-diphenylmethane diisocyanate, specific amines, and tripropylene glycol. The invention is also directed to processes for the production thereof.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: November 28, 1989
    Assignee: Mobay Corporation
    Inventor: William E. Slack
  • Fluorine-free mold powders
    Patent number: 4880463
    Abstract: A glass frit composition having the theoretical oxide values (in weight %) of 0.5-9 Li.sub.2 O, 29-38 Na.sub.2 O, 0-25 CaO, 5-10 B.sub.2 O.sub.3 and 38-50 of SiO.sub.2 is characterized in that it is virtually fluorine-free and was found to be eminently suitable in its molten form as a lubricant in the continuous casting of steel. The invention is thus related to a lithium containing fluorine-free frit composition and in a second aspect to an improvement in the process for the continuous casting of steel, the improvement comprising using as a lubricant the glass frit composition referred to above.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: November 14, 1989
    Assignee: Mobay Corporation
    Inventor: Elie E. Saad
  • Thermoplastic polycarbonates and blends with enhanced flame retardant properties
    Patent number: 4880864
    Abstract: It has now been found that the flame retardance of polydiorganosiloxane copolycarbonates may be significantly improved upon the addition thereto of a small amount of a metal salt of an inorganic acid. The polydiorganosiloxane copolycarbonates are conforming structurally to ##STR1## wherein p is an integer of from 1 to about 10,n is an integer of from 1 to about 1000,m is an integer of from 1 to about 500,A is a derivative of an aromatic dihydroxy compound,R and R' independently denote a C.sub.1 -C.sub.20 alkyl radical or a C.sub.6 -C.sub.14 aryl radical,which copolymer is characterized in that its relative viscosity measured on a solution of 0.5 g in 100 ml of dichloromethane at 25.degree. C. is at least 1.15.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: November 14, 1989
    Assignee: Mobay Corporation
    Inventors: Winfried G. Paul, Ronald L. Price, Sivaram Krishnan
  • Continuous process for the production of aqueous polyurethane urea dispersions
    Patent number: 4879322
    Abstract: The present invention is directed to a continuous process for the production of aqueous polyurethane-urea dispersions by(a) mixing an emulsifiable isocyanate-terminated prepolymer with an aqueous medium in a low shear, stator-rotor dynamic mixer operating at a speed of about 500 to 8000 rpm utilizing a mixing wattage of about 0.3 to 10.0 watts/cubic centimeter and a mixing volume of at least about 0.1 liters, the average residence time of the aqueous medium and the prepolymer being about 1 to 30 seconds and the overall flow rate through the dynamic mixer being at least about 50 kg/h and(b) reacting the dispersed isocyanate-terminated prepolymer prepared in (a) with a polyamine chain extender to form an aqueous polyurethane-urea dispersion.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: November 7, 1989
    Assignee: Mobay Corporation
    Inventors: Peter H. Markusch, Arthur W. Mason, Wolfgang D. Wenzel
  • Isocyanate reactive mixture and the use thereof in the manufacture of flexible polyurethane foams
    Patent number: 4876292
    Abstract: The present invention is directed to a reactive mixture for use in preparing a flexible polyurethane foam and to the foams produced therefrom. The reactive mixture broadly comprises(A) from more than 0 up to 3 parts by weight per 100 parts by weight of components (B) and (C) of an amine of the formula:H.sub.2 N--R--NH.sub.2where R is a C.sub.4 to C.sub.10 straight or branched alkylene group, or a C.sub.4 to C.sub.15 alicyclic group,(B) from 0 to 30% by weight of a polyoxyalkylene polyamine having a molecular weight of from about 400 to about 5000 and containing from 2 to 3 primary amino groups, and(C) from 700 to 100% by weight of one or more polyether polyhydroxyl compounds having hydroxyl functionalities from about 2 to 3 and molecular weights of from about 1000 to about 10,000, the percents of components (B) and (C) totalling 100%.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: October 24, 1989
    Assignee: Mobay Corporation
    Inventor: Charles M. Milliren
  • Polycarbonate compositions resistant to gamma radiation
    Patent number: 4874802
    Abstract: The invention relates to thermoplastic polycarbonate molding compositions comprising a polycarbonate resin and a stabilizing agent conforming to ##STR1## where R.sub.1 and R.sub.2 independently are ##STR2## R.sub.3 is a hydrogen atom, a branched or linear C.sub.1 -C.sub.20 alkyl or a C.sub.1 -C.sub.20 cycloalkyl, and R.sub.5 and R.sub.6 independently are a hydrogen atom or a C.sub.1 -C.sub.3 alkyl, x is an integer of about 1 to 70,y is an integer of about 0 to 70,R.sub.4 is C.sub.2 -C.sub.6 alkyl or cycloalkyl, C.sub.6 -C.sub.10 aryl or C.sub.7 -C.sub.20 alkylaryl or cycloalkylaryl. The agent is homogenically distributed throughout the resin and is present in an amount sufficient to improve the gamma radiation resistance of the composition.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: October 17, 1989
    Assignee: Mobay Corporation
    Inventors: Charles E. Lundy, Sivaram Krishnan, Gerard E. Reinert
  • Gamma radiation rsistant polycarbonate compositions
    Patent number: 4873271
    Abstract: The invention relates to thermoplastic polycarbonate molding compositions which are rendered improved resistance to gamma-radiation by the incorporation therewith of about 0.05 to about 5.0 percent by weight of an ester of poly(alkylene)oxide conforming to ##STR1## wherein R is a C.sub.1 -C.sub.20 alkyl, aryl or alkylaryl, Y denotes a hydrogen atom or a C.sub.1 -C.sub.6 alkyl radical, and X is about 1 to 40, preferably 5 to 30.The compositions of the invention exhibit excellent resistance to yellowness and formation of haze which commonly characterize gamma irradiated articles molded from polycarbonate.
    Type: Grant
    Filed: April 25, 1989
    Date of Patent: October 10, 1989
    Assignee: Mobay Corporation
    Inventors: Charles E. Lundy, Sivaram Krishnan
  • Influenza vaccine production in liquid cell culture
    Patent number: RE33164
    Abstract: Infectivity and replication of influenza viruses in successive numbers of cells of the same liquid cell culture is assured by including a protein hydrolyzing enzyme in the culture during virus incubation. Technique overcomes "one-step growth cycle" of virus and allows commercial influenza vaccine production from liquid cell cultures instead of from more costly embryonated chicken eggs. Resulting vaccine is thus substantially free of egg proteins.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: February 13, 1990
    Assignee: Mobay Corporation
    Inventors: Karen K. Brown, Richard C. Stewart