Patents Represented by Attorney Walter J. Lee
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Patent number: 4762731Abstract: Articles useful as RF-sealable packaging materials comprise a halopolymer barrier layer coated onto, or adhered to, a carbon monoxide-containing polymer, wherein the carbon monoxide-containing polymer provides RF-sealability to the structure. Other layers of materials may be employed as part of the packaging material.Type: GrantFiled: December 17, 1986Date of Patent: August 9, 1988Assignee: The Dow Chemical CompanyInventors: Gerald M. Lancaster, David C. Kelley, Russell H. Cramm, Charles V. Neywick
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Patent number: 4728566Abstract: Olefin interpolymers having carbon monoxide polymerized as a comonomer therein are found to be useful as an HF-bondable layer between various substrates, including, e.g., a foam layer and a surface layer, whereby laminated foams are obtained.Type: GrantFiled: May 26, 1987Date of Patent: March 1, 1988Assignee: The Dow Chemical CompanyInventors: Gerald M. Lancaster, Luis C. Mulford
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Patent number: 4714728Abstract: Aqueous dispersions useful in adhesive and coating applications, and a method of preparing the same. The dispersion contains (a) an ethylene interpolymer having an acid number of at least 117, a melt flow of at least 50, and comprising from 15 to 24 percent by weight of the interpolymer of interpolymerized ethylenically unsaturated carboxylic acid, such as acrylic or methacrylic acid, (b) from about 5 to about 2,000 parts by weight per 100 parts of the interpolymer of a rosin tackifier having an acid number of at least about 76 and being compatible and codispersible with the interpolymer, (c) water in an amount sufficient to provide a solids content of the dispersion of from about 10 to about 60 percent, and (d) water soluble alkali in an amount effective to neutralize from 20 to 130 percent of the acid groups in the interpolymer and the tackifier, to disperse at least 99 percent by weight of the interpolymer and the tackifier, and to provide a viscosity of the dispersion which is less than about 1,500 Pa-s.Type: GrantFiled: July 18, 1986Date of Patent: December 22, 1987Assignee: The Dow Chemical CompanyInventors: Stephen L. Graham, David O. Plunkett
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Patent number: 4687805Abstract: Halogenated interpolymers of ethylene and carbon monoxide. The halogenated interpolymer is prepared by (a) preparing a mixture of a liquid medium and a backbone polymer having interpolymerized therein ethylene and carbon monoxide, (b) contacting the backbone polymer in the mixture with halogen at conditions effective to react the halogen only with carbon atoms in the alpha position with respect to the carbonyl groups in the backbone polymer, and (c) recovering the halogenated polymer of step (b). The halogenated interpolymer is useful in molding films and articles therefrom and as a plasticizer in polyvinyl chloride resins. In a preferred embodiment, the backbone polymer has a carbon monoxide content of about 8-20 wt. percent and the halogenated interpolymer has a halide content of about 10-24 wt. percent.Type: GrantFiled: April 30, 1986Date of Patent: August 18, 1987Assignee: The Dow Chemical CompanyInventor: Mary L. N. White
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Patent number: 4678836Abstract: Blends of linear low density polyethylene (LLDPE) with ethylene/acrylic acid copolymer (E/AA) are prepared which exhibit improved optical, impact, heat-seal, and anti-blocking properties as compared to the E/AA copolymer alone.Type: GrantFiled: September 20, 1985Date of Patent: July 7, 1987Assignee: The Dow Chemical CompanyInventors: Osborne K. McKinney, James A. Allen, David P. Flores
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Patent number: 4671992Abstract: Olefin interpolymers having carbon monoxide polymerized as a comonomer therein are found to be useful as an HF-bondable layer between various substrates, including, e.g., a foam layer and a surface layer, whereby laminated foams are obtained.Type: GrantFiled: May 28, 1985Date of Patent: June 9, 1987Assignee: The Dow Chemical CompanyInventors: Gerald M. Lancaster, Luis C. Mulford
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Patent number: 4664843Abstract: Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.m+2d+3+na) A.sub.a.sup.n, where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.Type: GrantFiled: July 5, 1985Date of Patent: May 12, 1987Assignee: The Dow Chemical CompanyInventors: John L. Burba, III, Audrey L. Barnes
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Patent number: 4661634Abstract: Particles, fibers, or filaments of alkali salts of ethylene/carboxylic acid copolymers or terpolymers, especially in highly porous form, are employed in removing contaminants from tertiary amines or quaternary amine salts, especially metal contaminants.Type: GrantFiled: September 16, 1985Date of Patent: April 28, 1987Assignee: The Dow Chemical CompanyInventors: Walter L. Vaughn, Milton S. Wing
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Patent number: 4660354Abstract: Packaging containers which are closed, except for a pinch-type filling valve or filling-opening, are provided with an RF-sealable polymer, at least in the valve or opening, in order to be able to seal the valve or opening using RF frequency. Preferably, polymers which are sealable using MW energy are used, including, preferably, carbon monoxide-containing ethylene polymers.Type: GrantFiled: May 28, 1985Date of Patent: April 28, 1987Assignee: The Dow Chemical CompanyInventors: Gerald M. Lancaster, David C. Kelley
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Patent number: 4640865Abstract: Articles useful as RF-sealable packaging materials comprise a halopolymer barrier layer coated onto, or adhered to, a carbon monoxide-containing polymer, wherein the carbon monoxide-containing polymer provides RF-sealability to the structure. Other layers of materials may be employed as part of the packaging material.Type: GrantFiled: May 28, 1985Date of Patent: February 3, 1987Assignee: The Dow Chemical CompanyInventors: Gerald M. Lancaster, David C. Kelley, Russell H. Cramm, Charles V. Neywick
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Patent number: 4627388Abstract: Halogenated hydrocarbon waste materials are burned in a horizontal fire tube boiler. In the disclosed and illustrated embodiments, liquid and/or gaseous waste of highly chlorinated hydrocarbons (often, very inert content) are input along with a flow of fuel oil or gas as required to increase combustion temperature. While high combustion temperatures are achieved, a stable flame front is established. A refractory lined combustion chamber of substantial length is incorporated to contain the flame front near adiabatic conditions for sufficient dwell time so that the combustion gases leaving the vicinity achieve near complete combustion. Before entering the water jacket boiler furnace tube the temperature of the flue gas is dropped to a level enabling the use of standard materials of construction of the tube sheets of the boiler, where the fire tube boiler is most vulnerable to corrosion from excessive temperatures and condensation of chlorinated hydrocarbons reacting on the interior thereof.Type: GrantFiled: July 22, 1985Date of Patent: December 9, 1986Assignee: The Dow Chemical CompanyInventor: Jack E. Buice
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Patent number: 4604178Abstract: For use in assembly of elongate sacrificial anodes consumed in process containers, apparatus for aligning and connecting anode sections to form a single segmented anode is disclosed wherein the aligning and connecting apparatus is composed of the same or similar sacrificial material. In the preferred and illustrated embodiment, a graphite collar member cooperative with a graphite threaded pin is set forth. The two are used in conjunction with a drilled and tapped bottom socket formed in a rectangular graphite mode block; preferably, duplicate systems are used on symmetrical sides to string several graphite anode blocks together in conjunction with a tapered counterbore at the end of a drill passage through the graphite block.Type: GrantFiled: March 1, 1985Date of Patent: August 5, 1986Assignee: The Dow Chemical CompanyInventors: Dale R. Fiegener, Felix J. Broussard
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Patent number: 4601948Abstract: Olefin polymers which are unsuited, or ill-suited, for heating, sealing, or bonding by the action of high-frequency electromagnetic radiation, especially microwave radiation, are rendered heatable by such radiation by incorporating carbon monoxide, as a comonomer, into the polymer structure. Novel adhesives comprising terpolymers of ethylene/carbon monoxide/acids are disclosed, where the acid moiety of the terpolymer is at least one carboxylic acid which is polymerizable through carbon-to-carbon unsaturation, and salts thereof.Type: GrantFiled: August 31, 1984Date of Patent: July 22, 1986Assignee: The Dow Chemical CompanyInventors: Gerald M. Lancaster, James A. Allen
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Patent number: 4572770Abstract: A substrate is coated with a solution of metal oxide precursor compounds and an etchant for etching the substrate, the metal oxide precursor compounds are thermally concentrated by removing volatiles therefrom, and the so-concentrated metal oxides precursors are thermally oxidized in-situ on the substrate. The so-formed compositions are useful, e.g., as electrode material in electrochemical apparatuses and processes.Type: GrantFiled: June 27, 1984Date of Patent: February 25, 1986Assignee: The Dow Chemical CompanyInventors: R. Neal Beaver, Carl E. Byrd, Lloyd E. Alexander
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Patent number: 4540509Abstract: Ion exchange resins in the base form, e.g., DOWEX MWA--1--OH ion exchange resin, which contain crystalline Al(OH).sub.3, e.g., gibbsite, and/or bayerite, and/or norstrandite, are treated with hot, concentrated LiX solutions (where X is anion) to prepare 3-layer crystalline LiX.2Al(OH).sub.3.nH.sub.2 O in the resin.Type: GrantFiled: August 30, 1982Date of Patent: September 10, 1985Assignee: The Dow Chemical CompanyInventor: John L. Burba, III
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Patent number: 4093533Abstract: Improved asbestos diaphragms for use in electrolytic chlor-alkali cells are prepared by using polymeric fluorocarbons as binders for mixtures of chyrsotile asbestos and crocidolite asbestos.Type: GrantFiled: December 12, 1975Date of Patent: June 6, 1978Assignee: The Dow Chemical CompanyInventors: Richard N. Beaver, Charles W. Becker
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Patent number: 4073873Abstract: Hypochlorite ions in aqueous solution are catalytically decomposed by the action of a single-metal spinel of Co.sub.3 O.sub.4, preferably coated on an inert, stable support. The Co.sub.3 O.sub.4 catalyst may contain dispersed therein, optionally, other "modifier" metal oxides which do not affect the single-metal spinel structure of the Co.sub.3 O.sub.4, but which contribute better adherence of the Co.sub.3 O.sub.4 to the substrate and improve the toughness of the Co.sub.3 O.sub.4 coating.Type: GrantFiled: March 29, 1976Date of Patent: February 14, 1978Assignee: The Dow Chemical CompanyInventors: Donald L. Caldwell, Raymond J. Fuchs, Jr.
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Patent number: 4061549Abstract: Anodes particularly suitable for use in electrolytic cells are prepared by coating an electrically-conductive substrate with a bimetallic oxide having a spinel structure of the formula M.sub.x Co.sub.3-x O.sub.4 where O<X.ltoreq.1 and where M is a metal of Periodic Group IB, IIA or IIB. Also the coating contains therein, optionally, a modifier oxide, such as ZrO.sub.2.Type: GrantFiled: July 2, 1976Date of Patent: December 6, 1977Assignee: The Dow Chemical CompanyInventors: Mark Jonathan Hazelrigg, Jr., Donald Lee Caldwell
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Patent number: 4059680Abstract: Fluorosilicic acid solutions, which normally undergo decomposition when distilled, thereby creating unwanted forms of SiO.sub.2, are rendered stable during distillation by providing in the fluorosilicic acid solution an amount of HF which is at least about 10 parts of HF per 36 parts of H.sub.2 SiF.sub.6 and an amount of H.sub.2 O which is at least about 54 parts of H.sub.2 O per 36 parts of H.sub.2 SiF.sub.6. The mixture is distilled to remove any excess H.sub.2 O and excess HF that is present, without encountering formation of SiO.sub.2, until an azeotropic solution containing about 36% H.sub.2 SiF.sub.6, about 10% HF and about 54% H.sub.2 O is reached. The ternary azeotrope, being of constant quality and concentration, is more suitable for use in various processes, such as processes for making fumed SiO.sub.2, than H.sub.2 SiF.sub.6 solutions which are not of constant quality or concentration.Type: GrantFiled: September 20, 1976Date of Patent: November 22, 1977Assignee: The Dow Chemical CompanyInventors: Joel F. M. Leathers, Donald W. Calvin
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Patent number: 4055598Abstract: A urea-containing reactant is pyrolyzed under controlled temperature conditions of from about 100.degree. to about 150.degree. C. in the presence of an inert hydrocarbon carrier liquid having a boiling point at about the predetermined reaction temperature thereby providing an autocondensation product mass rich in biuret and having a relatively low residual content of unconverted urea. Other autocondensation pyrolyzates, less desired in the product when it is used as a protein supplement for ruminant feeds, are coproduced only in relatively low tolerable amounts.Type: GrantFiled: April 14, 1975Date of Patent: October 25, 1977Assignee: The Dow Chemical CompanyInventor: John M. Lee