Patents Represented by Attorney Robert E. Dunn
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Patent number: 4126536Abstract: Synthetic-fiber diaphragms are further improved by incorporating in the diaphragm an effective proportion of a suitable inorganic material such as TiO.sub.2, BaSO.sub.4 or K.sub.2 Ti.sub.8 O.sub.17, which is more hydrophilic than the fluoropolymer forming the diaphragm. This is done either by mixing the inorganic material with the resin before it is made into fiber or by supplying sub-micron-sized particles of the inorganic material, during or even after diaphragm formation. A principal benefit is that this lowers the cell voltage which is required during an initial period (up to about 300 hours) of the operation of a chlor-alkali cell provided with such a diaphragm, making it possible to avoid such drawbacks as suffering an initial period of low production or the necessity of providing external cooling to the cell during such an initial period.Type: GrantFiled: December 27, 1976Date of Patent: November 21, 1978Assignee: BASF Wyandotte CorporationInventors: Edward N. Balko, Shyam D. Argade, James E. Shrewsburg, Douglas A. Porath
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Patent number: 4125382Abstract: Fuels containing detergents have improved water tolerance when combined with acetal or ester terminated polyoxyalkylene ether compounds, acetal or carbonate coupled polyoxyalkylene ether compounds or C.sub.8 -C.sub.18 epoxide adducts of polyoxyalkylene ether compounds.Type: GrantFiled: April 11, 1977Date of Patent: November 14, 1978Assignee: BASF Wyandotte CorporationInventors: Edward F. O'Brien, William K. Langdon
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Patent number: 4125451Abstract: Diaphragms for electrolytic cells are prepared by depositing onto a cathode screen, discrete thermoplastic fibers. The fibers are highly branched, and when deposited, form an entanglement or network thereof, which does not require bonding or cementing.Type: GrantFiled: April 27, 1977Date of Patent: November 14, 1978Assignee: BASF Wyandotte CorporationInventors: Arvind S. Patil, Eugene Yehuda Weissman
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Patent number: 4125489Abstract: Liquid prepolymers are prepared by interpolymerizing monomers including a hydroxy aromatic compound, an aldehyde and furfuryl alcohol. The resultant liquid prepolymers have a viscosity of about 100-500,000 centipoises at 25.degree. C. and contain about 1.1-6 moles of interpolymerized aldehyde and about 3.1-15 moles of interpolymerized furfuryl alcohol for each mole of interpolymerized hydroxy aromatic compound. The prepolymers are highly reactive and may be polymerized with or without other monomers to produce flame retardant solid or cellular interpolymers. In one variant, flame retardant solid or cellular polymers are produced by interpolymerizing organic polyisocyanates with the prepolymers. In another variant, solid or cellular interpolymers are produced by polymerizing the prepolymers without monomers such as polyisocyanate in the presence of unreacted furfuryl alcohol. Processes are provided for preparing the aforementioned novel liquid prepolymers and solid or cellular interpolymers.Type: GrantFiled: March 31, 1978Date of Patent: November 14, 1978Assignee: BASF Wyandotte CorporationInventors: Thirumurti Narayan, Moses Cenker
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Patent number: 4125508Abstract: There is practiced a four-step procedure, according to which the acrylamide or the like and, if desired, other ingredients, is first polymerized in a water-in-oil emulsion where the oil phase consists of a hydrocarbon solvent in the presence of an appropriate quantity of suitable surfactant so as to produce particles of a desired size, then water is azeotropically removed, and then a suitable glycol or glycol ether is added, following which the hydrocarbon solvent used in the polymerization reaction is removed. This makes it possible to obtain a composition of matter which contains at least 10 weight percent of active flocculant ingredient, and more usually about 20 percent, suspended in a medium which is entirely water-soluble. Such flocculant compositions dissolve readily in water, yet they can be obtained, according to the method of the invention, in a manner considerably less expensive than any process which necessitates the grinding of a solid flocculant material into finely divided form.Type: GrantFiled: February 14, 1978Date of Patent: November 14, 1978Assignee: BASF Wyandotte CorporationInventor: Gunther H. Elfers
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Patent number: 4124414Abstract: Phosphated ferrous metal surfaces are treated with a rinse containing citric acid and sodium nitrite to enhance corrosion protection. This rinse has the advantages of providing an effluent which is not objectionable from an environmental viewpoint and does not stain the treated surfaces.Type: GrantFiled: May 25, 1977Date of Patent: November 7, 1978Assignee: BASF Wyandotte CorporationInventors: Joseph V. Otrhalek, Raymond M. Ajluni, Gilbert S. Gomes
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Patent number: 4122035Abstract: A process for recovering a catalyst adsorbent from a polyol-adsorbent residue by treatment of the polyol-adsorbent residue with organic solvents. This adsorbent can then be recycled for use in the further removal of alkaline catalysts from polyether polyols.Type: GrantFiled: December 17, 1976Date of Patent: October 24, 1978Assignee: BASF Wyandotte CorporationInventor: Carl Casimer Cislo
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Patent number: 4122056Abstract: Finely-divided dispersed solids are prepared by the emulsion polymerization in the presence of a free radical catalyst of a major amount of an ethylenically unsaturated monomer or mixture of monomers and a minor amount of a hydroxy-terminated organic compound having from one to eight hydroxyl groups, an oxyethylene content of from about 15 to 80 weight percent, a hydroxyl equivalent weight of from 250 to 10,000 and containing a polymerizable carbon-to-carbon double bond. The resulting polymeric solids are particularly useful in the preparation of reinforced polymer compositions.Type: GrantFiled: February 23, 1978Date of Patent: October 24, 1978Assignee: BASF Wyandotte CorporationInventors: Gerhard Gustav Ramlow, Louis Celeste Pizzini, John Thomas Patton, Jr., John Richard Murphy, John Eugene Davis
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Patent number: 4120650Abstract: Stained textile fabrics, especially cotton-polyester, rayon-polyester blends stained in use with blood stains, can be reclaimed and returned to use by the process of washing and bleaching said fabrics in the presence of a non-ionic or anionic surface-active agent, together with an oxygen-releasing bleaching agent and a chlorine-releasing bleaching agent, said bleaching agents used either successively or simultaneously. The laundering process involves the use of aqueous solutions of bleaching agents at elevated temperatures and at high pH. The process of the invention provides a synergistic improvement in the removal of stains as compared with the use of either an oxygen-releasing bleaching agent or a chlorine-releasing bleaching agent. The process can include a hot aqueous acid sour treatment to remove rust stains and an aqueous sour to neutralize alkalies in the bleached fabric. The treatment can be completed in a period of time of about 30 to about 90 minutes.Type: GrantFiled: December 5, 1977Date of Patent: October 17, 1978Assignee: BASF Wyandotte CorporationInventors: Frank Robert Kappler, Roma Jean Killian, John Joseph Cramer
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Patent number: 4120802Abstract: Liquid and solid compositions are provided for souring and imparting softness to freshly laundered textile materials. When in the form of a stable homogeneous liquid, the composition may contain (a) a quaternized fatty amide, an aqueous emulsion of partially oxidized polyethylene or a fatty amphoteric compound as the softening agent, (b) hydrofluorosilicic acid, ammonium silicofluoride, zinc silicofluoride, ammonium acid fluoride, potassium acid fluoride, or orthophosphoric acid as the souring agent, and (c) water. When in the form of a stable dry solid, the composition may contain (a) a quaternized fatty amide or fatty amphoteric compound as the softening agent, and (b) ammonium silicofluoride, potassium silicofluoride, sodium silicofluoride, zinc silicofluoride, ammonium acid fluoride, sodium acid fluoride or potassium acid fluoride. A method of preparing the liquid composition is provided which insures that it remains stable and homogeneous while awaiting use.Type: GrantFiled: May 26, 1977Date of Patent: October 17, 1978Assignee: BASF Wyandotte CorporationInventors: John D. Ciko, John J. Cramer, Geoffrey A. Jamieson
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Patent number: 4120799Abstract: Liquid and solid compositions are provided for souring and imparting softness to freshly laundered textile materials. When in the form of a stable homogeneous liquid, the composition may contain (a) a quaternized fatty amide, an aqueous emulsion of partially oxidized polyethylene or a fatty amphoteric compound as the softening agent, (b) hydrofluorosilicic acid, ammonium silicofluoride, zinc silicofluoride, ammonium acid fluoride, potassium acid fluoride, or orthophosphoric acid as the souring agent, and (c) water. When in the form of a stable dry solid, the composition may contain (a) a quaternized fatty amide or fatty amphoteric compound as the softening agent, and (b) ammonium silicofluoride, potassium silicofluoride, sodium silicofluoride, zinc silicofluoride, ammonium acid fluoride, sodium acid fluoride or potassium acid fluoride. A method of preparing the liquid composition is provided which insures that it remains stable and homogeneous while awaiting use.Type: GrantFiled: May 26, 1977Date of Patent: October 17, 1978Assignee: BASF Wyandotte CorporationInventors: John D. Ciko, John J. Cramer, Geoffrey A. Jamieson
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Patent number: 4118326Abstract: As a spin-finish lubricant for processing synthetic fibers, a nonionic polyalkoxylate surfactant of the fatty-ether alkoxylate, fatty-ester alkoxylate, or block or heteric ethylene oxide/propylene oxide type is made which contains a substantial proportion of alkali-metal or alkaline-earth metal ions and preferably anions of volatile nature, such as the anions of saturated carboxylic acids containing up to 18 carbon atoms. Such lubricants display improved stability when during a spin-finishing operation the synthetic fiber to which they have been applied is passed over a heater plate maintained at 150.degree. to 300.degree. Centigrade.Type: GrantFiled: February 9, 1976Date of Patent: October 3, 1978Assignee: BASF Wyandotte CorporationInventor: Robert B. Login
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Patent number: 4116713Abstract: A thickened acid cleaner concentrate composition comprising an inorganic acid, e.g., hydrochloric, an organic acid, e.g., oxalic, a nonionic surfactant, an anionic surfactant, a flocculating agent such as iron or aluminum ion and water is used to clean vehicles such as railroad equipment. The waste water is then treated by increasing its pH to cause flocculation and separation to remove suspended solids and entrained BOD prior to discharge or re-use within the plant. The flocculating agent in the composition provides a proportional pretreatment of the waste to facilitate the final treatment and separation of waste in the used composition.Type: GrantFiled: May 26, 1977Date of Patent: September 26, 1978Assignee: BASF Wyandotte CorporationInventors: Joseph V. Otrhalek, Gilbert S. Gomes, Robert E. Gansser
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Patent number: 4115218Abstract: A practical method of electrolyzing sodium chloride brine on a commercial scale, obtaining in good yield a caustic product exceptionally low in salt content, is provided. The process necessarily involves working with a brine of lower calcium-ion content than is ordinarily used, using dimensionally stable anodes, using, preferably but not necessarily, a heat-treated ion-exchange membrane as a separator within the cell, and periodically taking action to reduce the cell voltage, by reducing the current or interrupting it, alone or with a concomitant flushing of the catholyte portion of the cell.Type: GrantFiled: October 22, 1976Date of Patent: September 19, 1978Assignee: BASF Wyandotte CorporationInventor: Michael Krumpelt
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Patent number: 4115281Abstract: Liquid and solid compositions are provided for souring and imparting softness to freshly laundered textile materials. When in the form of a stable homogeneous liquid, the composition may contain (a) a quaternized fatty amide, an aqueous emulsion of partially oxidized polyethylene, a fatty amphoteric compound, or a fatty amide as described hereinafter as the softening agent, (b) hydrofluorosilicic acid, ammonium silicofluoride, zinc silicofluoride, ammonium acid fluoride, potassium acid fluoride, or orthophosphoric acid as the souring agent, and (c) water. When in the form of a stable dry solid, the composition may contain (a) a quaternized fatty amide, a fatty amphoteric compound or a fatty amide as described hereinafter as the softening agent, and (b) ammonium silicofluoride, potassium silicofluoride, sodium silicofluoride, zinc silicofluoride, ammonium acid fluoride, sodium acid fluoride or potassium acid fluoride.Type: GrantFiled: January 26, 1976Date of Patent: September 19, 1978Assignee: BASF Wyandotte CorporationInventors: John D. Ciko, John J. Cramer, Geoffrey A. Jamieson
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Patent number: 4113785Abstract: New polyether polyols of predetermined structure are prepared by reacting polyether bis alcoholates with selected bis epoxides. Specifically, a polyoxyalkylene glycol is converted to the bis alcoholate, and then the bis alcoholate is reacted with an equivalent amount of a glycol bis glycidyl ether, with the reactants being mixed together all at once. The polyether polyalcoholate thus obtained is converted to a high molecular weight polyether polyol by acid neutralization or ion exchange.Type: GrantFiled: October 29, 1976Date of Patent: September 12, 1978Assignee: BASF Wyandotte CorporationInventors: Herbert Helfert, Pauls Davis, William Keith Langdon
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Patent number: 4111816Abstract: There are disclosed a phosphorus-containing polyester and size compositions especially useful for sizing spun and continuous filament yarn produced from hydrophobic fibers and useful in protecting these fibers from abrasion during the weaving process. When the size is used alone or in mixtures with conventional size agents such as starches and polyvinyl alcohol, improved adhesion is obtained to hydrophobic fibers or blends thereof with cotton or other hydrophilic fibers. Polyester, polypropylene and polyamide and other fibers are effectively sized with the size compositions of the invention. The polyester consists of a branched chain phosphorus-containing polymer which is the reaction product of at least one dicarboxylic reactant, at least one diol or polyoxyalkylene glycol and a phosphorus acid reactant selected from the class consisting of phosphorus pentoxide, phosphoric acid and mixtures thereof.Type: GrantFiled: June 27, 1977Date of Patent: September 5, 1978Assignee: BASF Wyandotte CorporationInventor: Robert Bernard Login
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Patent number: 4110270Abstract: Foams characterized by isocyanurate and urethane linkages are prepared by condensing: (a) an organic polyisocyanate with a polyol or (b) a quasi-prepolymer in the presence of a blowing agent and a catalytically effective amount of an alkali metal salt of an organic sulfinic acid. The catalysts of the invention offer the advantages of longer cream times and fully cured foams in acceptable times thus finding particular utility in pour-in-place and slab stock foaming applications.Type: GrantFiled: May 5, 1977Date of Patent: August 29, 1978Assignee: BASF Wyandotte CorporationInventor: Thirumurti Narayan
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Patent number: 4110227Abstract: Lubricants for synthetic fibers such as polyester and nylon are disclosed which are improved oxidation stable polyoxyalkylene lubricant compounds. Such lubricant compounds can be used alone as textile fiber lubricants or in combination with other polyoxyalkylene compounds useful as fiber lubricants but which are subject to oxidative degradation under conditions of heating at temperatures at least above 200.degree. C. An improved textile fiber is produced by the use of such fiber lubricants in conventional processes for producing continuous filament, false twist, textured yarn as well as other type yarns.The improved oxidation stable homopolymer and copolymer, i.e.Type: GrantFiled: September 19, 1977Date of Patent: August 29, 1978Assignee: BASF Wyandotte CorporationInventors: David Dudley Newkirk, Robert Bernard Login, Basil Thir
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Patent number: 4108809Abstract: Liquid prepolymers are prepared by interpolymerizing monomers including a hydroxy aromatic compound, an aldehyde and furfuryl alcohol. The resultant liquid prepolymers have a viscosity of about 100-500,000 centipoises at 25.degree. C. and contain about 1.1-6 moles of interpolymerized aldehyde and about 3.1-15 moles of interpolymerized furfuryl alcohol for each mole of interpolymerized hydroxy aromatic compound. The prepolymers are highly reactive and may be polymerized with or without other monomers to produce flame retardant solid or cellular interpolymers. In one variant, flame retardant solid or cellular polymers are produced by interpolymerizing organic polyisocyanates with the prepolymers. In another variant, solid or cellular interpolymers are produced by polymerizing the prepolymers without monomers such as polyisocyanate in the presence of unreacted furfuryl alcohol. Processes are provided for preparing the aforementioned novel liquid prepolymers and solid or cellular interpolymers.Type: GrantFiled: November 29, 1976Date of Patent: August 22, 1978Assignee: BASF Wyandotte CorporationInventors: Thirumurti Narayan, Moses Cenker