Patents Represented by Attorney Dan R. Howard
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Patent number: 4644733Abstract: Loose fill packing material comprising a plurality of expanded, resilient, thermoplastic dunnage particles, which particles are rendered more effective by coating an outer surface thereof with an additive which additive results in the packing material having improved cushioning properties and reduces the tendency of articles to migrate through the dunnage particles, wherein the particles have an average maximum cross-sectional dimension of at least 0.5 inch.Type: GrantFiled: January 16, 1986Date of Patent: February 24, 1987Assignee: The Dow Chemical CompanyInventor: Blair E. Dolinar
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Patent number: 4620026Abstract: A composition having utility as a plasticizer for halogen-containing resins is a mixture of (a) at least two diesters of terephthalic acid or (b) at least two triesters of trimellitic acid. The diesters of terephthalic acid are represented by the general formula ##STR1## wherein R.sub.1 is a phenyl radical or an aliphatic hydrocarbon radical of the formula C.sub.n H.sub.m, wherein n is an integer of 1 through 8 inclusive and m is equal to 2n+1; R.sub.2 is either hydrogen or an aliphatic hydrocarbon having one, two, three or four carbon atoms; x is an integer of 2 to 4 inclusive; y is an integer of 2 to 4 inclusive;The trialkyl esters of trimellitic acid are represented by the general formula ##STR2## wherein R.sub.1 is a phenyl radical or an aliphatic hydrocarbon radical of the formula C.sub.n H.sub.m wherein n is an integer of 1 through 8 inclusive and m is equal to 2n+1; R.sub.Type: GrantFiled: August 10, 1984Date of Patent: October 28, 1986Assignee: The Dow Chemical CompanyInventor: Sanford A. Siegel
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Patent number: 4612216Abstract: A multilayer metal/organic polymer composite which has a formable thermoplastic polymer layer, a first metal layer adhered to the polymer layer and a second metal layer adhered to the first metal layer. The first metal layer is formed either from one metal or from an alloy of two or more metals. Suitable alloys are those which begin melting at a temperature within a range of from about 85 to 150 percent of the forming temperatures in degrees Kelvin of the polymer layer. If the first metal layer is formed from one metal, the metal is suitably, copper, silver, nickel or manganese. The second metal layer is a metal or an alloy of two or more metals that melts at a temperature which is less than that at which the first metal layer melts.Type: GrantFiled: November 26, 1984Date of Patent: September 16, 1986Assignee: The Dow Chemical CompanyInventor: Virgil B. Kurfman
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Patent number: 4594395Abstract: A process for metalating a halogenated polyolefin so that only a very low percentage of the halogen originally present in the halogenated polyolefin is actually reacted during the process. The process comprises adding a solvated transmetalating organometallic compound to a cement mix of a halogenated polyolefin and a solvent. The transmetalating organometallic compound is present in the reaction in a molar amount less than the molar amount of the halogen content of the halogenated polyolefin. The reaction temperature is below 0.degree. C.Type: GrantFiled: March 15, 1985Date of Patent: June 10, 1986Assignee: The Dow Chemical CompanyInventor: Massimo D. Bezoari
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Patent number: 4594394Abstract: A process is disclosed for metalating a polyolefin halide so that there is a low amount of cross-linking site reactions. The process comprises adding a solvated transmetalating organometallic compound to a cement mix of a polyolefin halide and a solvent. The reaction temperature is below -20.degree. C.Type: GrantFiled: March 15, 1985Date of Patent: June 10, 1986Assignee: The Dow Chemical CompanyInventor: Massimo D. Bezoari
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Patent number: 4588638Abstract: Loose fill packing material comprising a plurality of expanded, resilient, thermoplastic dunnage particles, which particles are rendered more effective by coating an outer surface thereof with an additive which additive results in the packing material having improved cushioning properties and reduces the tendency of articles to migrate through the dunnage particles, wherein the particles have an average maximum cross-sectional dimension of at least 0.5 inch.Type: GrantFiled: April 19, 1985Date of Patent: May 13, 1986Assignee: The Dow Chemical CompanyInventor: Blair E. Dolinar
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Patent number: 4541965Abstract: The present invention provides a water-soluble dispersant for aqueous slurries of coal, lignite, cement, gypsum, and fillers. The dispersant comprises a sulfonated mixture of polynuclear fused-ring aromatic hydrocarbon compounds. The mixture, prior to sulfonation, (a) is liquid at a temperature of 100.degree. Centigrade, (b) has an aromatic content of more than about sixty percent, (c) a molecular weight distribution of from about 150 to about 10,000, and (d) a weight average molecular weight of less than about five hundred.Type: GrantFiled: August 22, 1984Date of Patent: September 17, 1985Assignee: The Dow Chemical CompanyInventors: Timothy Thomson, Ronald L. Glomski
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Patent number: 4535120Abstract: An aqueous dispersion of vinylidene chloride resin which, when coated onto a synthetic resinous film substrate, has the combined properties of: (1) good adhesion to the substrate; (2) good adhesion of a printing ink to the coating; (3) satisfactory barrier to gases (especially oxygen) and water vapor; and (4) a high resistance to boiling water treatment. The vinylidene chloride resin must also have polymerized therein methyl methacrylate, methacrylonitrile and methacrylic acid. A total amount of methacrylic acid must be between 1.times.10.sup.-4 and 3.times.10.sup.-4 moles of methacrylic acid per gram of polymer solids. A portion of the total amount of methacrylic acid exists in a form titratable with a 1/20 Normal aqueous solution of sodium hydroxide. The portion must be the less of (a) about 1.3.times.10.sup.-4 moles per gram of polymer solids or (b) about 60 percent of the total amount.Type: GrantFiled: September 14, 1981Date of Patent: August 13, 1985Assignee: The Dow Chemical CompanyInventors: Kazuhiko Hiyoshi, Norio Matsuura, Michiharu Matsuguchi, Norio Onofusa, Tadao Nishikage
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Patent number: 4530939Abstract: Generally closed cell phenolic foams are prepared which have a K-factor of less than 0.2, preferably from about 0.116 to about 0.170 Btu/hr - .degree.F. - ft - .sup.2 per inch of foam thickness when measured at 24.degree. Centigrade. The foams are prepared from a resole resin which has been stripped to a water level of less than 7 percent by weight, preferably from about 3 to about 6 percent by weight based on resin weight. A viscosity adjusting amount of a solvent, such as phenol, and from about 10 to about 20 weight percent, based on resin weight, of a polyglycol are also part of a foam forming formulation. Conventional surfactants, blowing agents and acidic catalysts are used to prepare the foams. The foams so prepared generally have no tendency to autoxidize when placed in an oven heated to a temperature of 250.degree. Centigrade. The foams so prepared also have enhanced resistance to flame penetration.Type: GrantFiled: December 6, 1983Date of Patent: July 23, 1985Assignee: The Dow Chemical CompanyInventor: Gregory K. Rickle
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Patent number: 4515907Abstract: An improved foamable vinyl aromatic polymer composition and a process for preparing a vinyl aromatic polymer foam having incorporated therein a blend of alpha-olefin polymers are disclosed. The blend of alpha-olefin polymers may be virgin material or a portion of recycle feedstream, the recycle feedstream being prepared from adhesive film faced extruded vinyl aromatic foam laminate scrap. Foam materials having improved solvent resistance, ultraviolet light stability, and adhesive characteristics are prepared from the composition and process.Type: GrantFiled: March 16, 1984Date of Patent: May 7, 1985Assignee: The Dow Chemical CompanyInventors: Thomas W. McCullough, Bradley D. Stevens
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Patent number: 4510208Abstract: A multilayer metal/organic polymer composite which has a formable thermoplastic polymer layer, a first metal layer adhered to the polymer layer and a second metal layer adhered to the first metal layer. The first metal layer is formed either from one metal or from an alloy of two or more metals. Suitable alloys are those which begin melting at a temperature within a range of from about 85 to 150 percent of the forming temperatures in degrees Kelvin of the polymer layer. If the first meal layer is formed from one metal, the metal is suitably, copper, silver, nickel or manganese. The second metal layer is a metal or an alloy of two or more metals that melts at a temperature which is less than that at which the first metal layer melts.Type: GrantFiled: July 1, 1983Date of Patent: April 9, 1985Assignee: The Dow Chemical CompanyInventor: Virgil B. Kurfman
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Patent number: 4482771Abstract: 1,3-Pentadiene is polymerized in an inert gaseous atmosphere from a mixture of saturated and unsaturated hydrocarbon molecules. At least 50 percent by weight of said molecules have 5 carbon atoms. An anionic polymerization initiator in conjunction with an organic polar solvent is used to effect polymerization. Cyclopentadiene, active hydrogen compounds and other polymerization-terminating compounds may be inactivated and separated from the mixture of hydrocarbon compounds before starting polymerization. As an alternative, inactivation and separation of cyclopentadiene, active hydrogen compounds and polymerization-terminating compounds may be omitted provided the anionic polymerization initiator is employed in an amount to (a) inactivate such compounds and (b) initiate polymerization of 1,3-pentadiene.The polymer of 1,3-pentadiene so prepared is then hydrogenated or functionalized by further reaction.Type: GrantFiled: December 8, 1983Date of Patent: November 13, 1984Assignee: The Dow Chemical CompanyInventors: John W. Bozzelli, Kent S. Dennis, Felipe A. Donate