Patents Assigned to Witco Chemical Corporation
  • Patent number: 4764428
    Abstract: A pelletizing antistatic agent composition and a method of forming same are provided. The composition includes a predominantly C.sub.18 alkyl ethoxylated primary amine component and a metal stearate type of component, preferably together with an antioxidant. The resulting composition is formed into a plurality of pellets and functions as an antistatic agent in plastics of various types, such as food packaging polyolefin materials.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: August 16, 1988
    Assignee: Witco Chemical Corporation
    Inventor: Stewart E. Gloyer
  • Patent number: 4639484
    Abstract: Thermoplastic molding compositions are provided which include acrylonitrile-butadiene-styrene resin in combination with a mold release agent ester that is a wax ester including cetyl palmitate, cetyl stearate and blends of cetyl palmitate and cetyl stearate. Also provided is a method for reducing the release force needed to remove injection molded acrylonitrile-butadiene-styrene parts from the mold by incorporating the mold release agent ester into the thermoplastic molding composition.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: January 27, 1987
    Assignee: Witco Chemical Corporation
    Inventor: Kim S. Percell
  • Patent number: 4608331
    Abstract: Photopolymeric polyurethanes are provided which have a polymeric backbone including recurring urethane or urea groups or both and which have unsaturated hydrocarbon groups attached to this backbone. These photopolymers are combined with a solvent and have a selected and controlled molecular weight and viscosity. The photopolymeric polyurethane solutions are especially useful in providing plates that have a layer including a photopolymer, particularly plates for printing or photoresists that have a photopolymeric layer over a layer of light sensitive diazonium composition.
    Type: Grant
    Filed: November 16, 1984
    Date of Patent: August 26, 1986
    Assignee: Witco Chemical Corporation
    Inventors: Carl Bernstein, Konstantinos Arvanitis, Luigi Amariti
  • Patent number: 4602079
    Abstract: The hydrolysis resistance of a urethane elastomer prepared by reacting a hydroxy compound with a prepolymer in a weight ratio of between 5/95 and 95/5 is improved; the hydroxy compound consists of at least one saturated polyester resin and/or at least one chain-extending agent, if necessary in the presence of the usual additives, each resin and each chain-extending agent having at least two OH end groups; the prepolymer is prepared by reacting at least one saturated polyester resin having at least two OH end groups and at least one organic isocyanate of functionality .gtoreq.2, in molar excess. To this end, to prepare at least one polyester resin, a fraction of the polyacid(s) used is replaced by at least one polymerized fatty acid, consisting substantially of a dimer and/or a trimer, the initial total content of polymerized fatty acid(s) being between 1 and 35% by weight, referred to the finished product.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: July 22, 1986
    Assignee: Witco Chemical Corporation
    Inventors: Gerard Vinches, Line L. Fiquet
  • Patent number: 4575142
    Abstract: A safety grip handle for use with a hose of the type employed to direct a stream or spray of steam, hot water, chemicals, or the like, at an object or work area. The handle acts to position the hand, and the body, of an operator away from the nozzle of the hose and the hose itself.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: March 11, 1986
    Assignee: Witco Chemical Corporation
    Inventor: Fayne P. Parker
  • Patent number: 4562214
    Abstract: Emulsifiable compositions of cosmetic emulsion oils, oxidized petrolatum and water, and stable emulsified water-in-oil personal care preparations produced therefrom by neutralizing the acidic functionality of the oxidized petrolatum with a polyvalent cationic water-soluble metal salt.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: December 31, 1985
    Assignee: Witco Chemical Corporation
    Inventors: Graham Barker, Martin J. Barabash
  • Patent number: 4560489
    Abstract: High performance modified high metal ratio overbased calcium complex greases which contain colloidally dispersed therein calcium carbonate in the form of crystalline calcite, and which greases include minor proportions, by weight, of (a) a calcium borate and (b) a calcium soap of a soap-forming aliphatic monocarboxylic acid containing at least 12 carbon atoms, exemplified by 12-hydroxystearic acid, said (a) and (b) ingredients being essentially homogeneously distributed through said calcium complex grease.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: December 24, 1985
    Assignee: Witco Chemical Corporation
    Inventors: Ron Muir, William Blokhuis
  • Patent number: 4540807
    Abstract: Di- and other poly-sulfosuccinate esters of di- and other poly-hydroxyl aromatic propoxylated compounds in which, by way of illustration, both of the hydroxyl groups of a bisphenol, for instance, Bisphenol A, are etherified with a propylene oxide .alpha.-epoxide, the free hydroxyl groups of the resulting propoxylated bisphenol then being esterified with a sufficient amount of maleic anhydride whereby the resulting intermediate acid ester compound comprises di- and/or poly-maleic acid esters having free carboxyl groups which are then esterified with propylene oxide .alpha.-epoxide to produce a further intermediate having a free hydroxyl group at each of its terminal ends; and after which said last-mentioned intermediate is reacted to introduce at least two sulfosuccinated groups into the final compound, for instance, by reaction with aqueous bisulfite.
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: September 10, 1985
    Assignee: Witco Chemical Corporation
    Inventors: Kermit D. Longley, Anastasios Karalis
  • Patent number: 4517100
    Abstract: A wellbore fluid having improved lubricating properties for drilling in formations in the earth comprising water and a lubricant composition containing a mixture of a chlorinated component and a sulfurized component in proportions to produce a lubricant composition containing 15 to 30 weight percent chlorine and 2 to 10 weight percent sulfur.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: May 14, 1985
    Assignee: Witco Chemical Corporation
    Inventors: Weldon B. Nance, Jack M. Calkins
  • Patent number: 4514312
    Abstract: A lubricant composition having special utility as a lubricant in constant velocity universal joints of the type used in front wheel drive vehicles. The composition comprises a low sulfur lubricating oil base grease and an additive package comprising a mixture of an oil soluble, sulfur-free organic compound and an oil insoluble sulfur-free inorganic compound.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: April 30, 1985
    Assignee: Witco Chemical Corporation
    Inventors: Jon C. Root, John F. Barnes, Jack E. Coovert
  • Patent number: 4499028
    Abstract: A method for the preparation of isethionic acid by treating an alkali metal isethionate with hydrochloric acid to form isethionic acid and a chloride salt. The chloride salt is removed so as to provide at least a 50% by weight aqueous solution of the isethionic acid after removal of excess hydrochloric acid, which solution may be further reacted with a polyvalent metal oxide, hydroxide or amine to form the corresponding heavy metal isethionate. Zinc isethionate, for instance, is useful as a catalyst for making acyl isethionates used in making soap bars.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: February 12, 1985
    Assignee: Witco Chemical Corporation
    Inventor: Kermit D. Longley
  • Patent number: 4481122
    Abstract: Lubricant compositions adapted for use in lubricating traction motor gears comprising a major proportion of a base oil such as a mineral oil, and a minor proportion of an oil soluble polymer such as a polyisobutylene.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: November 6, 1984
    Assignee: Witco Chemical Corporation
    Inventors: Jon C. Root, John F. Barnes, Dennis M. Rosson
  • Patent number: 4473438
    Abstract: Energy-efficient processes for spray drying aqueous liquids in a spray dryer supplied with furnace-heated drying gas which processes comprise withdrawing the spent drying gas from the spray dryer, spraying the spent drying gas with water adiabatically to cool the gas and increase the water content thereof, and recycling a portion of the humidified gas to the furnace, the recycled portion being from about 40 percent to about 70 percent of the total humidified gas, together with apparatus for carrying out the processes.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: September 25, 1984
    Assignee: Witco Chemical Corporation
    Inventor: Valentin R. Loureiro
  • Patent number: 4447571
    Abstract: A process for providing water based anionic polyurethanes having improved thermal oxidation color stability. Water dispersed amine salts of anionic prepolymers prepared from the reaction of polyhydroxy compounds and dihydroxy carboxylic acids with diisocyanates are chain-extended with hydrazine or hydrazide and thereafter optionally with a diamine, when cured at temperatures in excess of 150.degree. C., form polyurethane products having substantially no discoloration and good mechanical properties. Alternately, the hydrazide may be employed as an additive rather than as a chain-extender. The process is particularly useful when employing cross-linking agents which react only at high temperatures.
    Type: Grant
    Filed: October 15, 1981
    Date of Patent: May 8, 1984
    Assignee: Witco Chemical Corporation
    Inventors: Shmuel Dabi, Peter Loewrigkeit
  • Patent number: 4434102
    Abstract: A process for making a mixed product of dimethyltin dichloride and methyltin trichloride by reacting dimethyltin dichloride with stannic chloride without catalyst. The mixed product is useful as an intermediate, without further purification, in the preparation of corresponding mercaptide stabilizer for vinyl chloride polymers.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: February 28, 1984
    Assignee: Witco Chemical Corporation
    Inventors: Gerald Spiegelman, Koei-Liang Liauw
  • Patent number: 4420437
    Abstract: A process for preparing a 2-aralkyl-5,5-dialkyl-1,3,2-dioxaphosphorinan-2-one by heating a 2-aralkyloxy-5,5-dialkyl-1,3,2-dioxaphosphorinane such as the novel 2-benzyloxy-5,5-dimethyl-1,3,2-dioxaphosphorinane, with a catalytic quantity of an aralkyl halide. The aralkyl halide can be recovered and recycled.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: December 13, 1983
    Assignee: Witco Chemical Corporation
    Inventors: Peter F. Epstein, Richard D. Peveler, Michael H. Fisch
  • Patent number: 4417999
    Abstract: A free flowing antistatic composition is provided in a solid particulate form for use with polymeric materials. The composition is a flowable mixture of predominantly C.sub.18 alkyl ethoxylated primary amine particulates with micron sized silica gel particulates. The composition of the present invention is particularly useful with food packaging polyolefin materials.
    Type: Grant
    Filed: June 3, 1982
    Date of Patent: November 29, 1983
    Assignee: Witco Chemical Corporation
    Inventor: James P. Duffy
  • Patent number: 4404258
    Abstract: A polyurethane coated polyvinyl chloride or co-polymer which resists discoloration is provided by coating the substrate surface with an aqueous dispersed polyurethane treated with a mono-acid halide, mono-acid anhydride, carbethoxy cyclic imide or monoisocyanate. The coated composite even when subjected to temperatures in excess of 100 degrees C. for extended periods resists discoloration and remains thermo-color stable with extended use.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: September 13, 1983
    Assignee: Witco Chemical Corporation
    Inventors: Peter Loewrigkeit, Shmuel Dabi
  • Patent number: 4404295
    Abstract: The machine processing character as well as the stress-strain properties of polyester polyurethane foam are improved by the use of a cross-linking polyol, a viscosity increasing dicarboxylic acid or anhydride such as phthalic anhydride, and by the use of specific minor amounts of poly(oxyethylene) glycol, in the esterification formula of foam grade polyester resins. A nonhydrophillic flexible polyester based polyurethane foam is produced.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: September 13, 1983
    Assignee: Witco Chemical Corporation
    Inventors: Carl Bernstein, James Stogis, Travis Riddle, Robert Kufrin
  • Patent number: D294802
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: March 22, 1988
    Assignee: Witco Chemical Corporation
    Inventor: Theodore Beaver