Patents Represented by Attorney Karen M. Dellerman
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Patent number: 5489475Abstract: A blend of fibers is made of about 51 to 90% by weight of base fibers (a) selected from triangular trilobal fibers having a modification ratio ranging from 2.4 to 3.4; hollow pentagonal fibers; standard trilobal fibers having a modification ratio of at least 2.6; pointed lobe trilobal fibers having a modification ratio of at least 2.6; and mixtures thereof, and about 10 to 49% by weight of accent fibers (b) selected from standard trilobal fibers having a modification ratio ranging from 1.7 to 2.4; pointed lobe trilobal fibers having a modification ratio ranging from 2.0 to 2.9; and mixtures thereof. The fibers (a) and (b) have a denier per filament within the range represented by the area enclosed by sides A, B, C, D and E of FIG. 1. Where fibers (a) and (b) are both pointed lobe trilobal fibers with the same modification ratio and denier per filament, then fibers (a) are delustered and fibers (b) are undelustered.Type: GrantFiled: June 7, 1995Date of Patent: February 6, 1996Assignee: BASF CorporationInventors: Gerry A. Hagen, Wei Li
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Patent number: 5466410Abstract: An apparatus for extruding a wide variety of plural-component and mixed monocomponent fiber configurations in a spin pack which utilizes one or more disposable distributor plates in which distribution flow paths are formed on one or both sides to distribute the polymer components to appropriate spinneret inlet hole locations. The etching process, itself inexpensive as compared to drilling, milling, reaming, etc., permits very thin metal plates to be employed, rendering the fabrication expense for the plates small, relative to the remainder of the spin pack, as to justify discarding or disposing of the plates rather than periodically cleaning them. The etching process also permits the etched distribution paths to be small and densely packed, whereby the spinneret orifices can be more densely packed in the spinneret and staggered as between rows and columns so as to increase the fiber yield per given spinneret surface area.Type: GrantFiled: May 11, 1994Date of Patent: November 14, 1995Assignee: BASF CorporationInventor: William H. Hills
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Patent number: 5464584Abstract: A method for producing carpet yarn produces yarn having substantial soil hiding, soil repelling and resistance to staining with acid dye characteristics. The yarn is made by forming at least one hollow trilobal fiber from a molten nylon polymer having an amine end group level below about 25 meq/kg, the fiber having a modification ratio of about 2 and a void volume of at least 3%; quenching the formed fiber sufficiently to solidify the molten nylon; immediately after quenching, at a yarn speed of at least 300 mpm, finishing the fiber with spin finish containing fluorochemical; fully drawing the finished fiber; texturing the finished yarn by a hot fluid texturing process; and subsequently, applying to the textured yarn a sulfonated stainblocker, the stainblocker being heated to at least 50.degree. C. and applied while the fiber temperature is at least about 100.degree. C. in the stainblocker application step.Type: GrantFiled: August 4, 1994Date of Patent: November 7, 1995Assignee: BASF CorporationInventor: Ling Yeh
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Patent number: 5464677Abstract: A process for manufacturing substantially 100% nylon 6 carpet provides a nylon 6 face yarn to a nylon 6 support means so that the yarn and the support means form a carpet having a face side which is displayed when the carpet is installed and a back that binds the face yarn to the support means wherein said binding is with molten or dissolved nylon 6.Type: GrantFiled: August 11, 1994Date of Patent: November 7, 1995Assignee: BASF CorporationInventors: Thomas F. Corbin, Otto M. Ilg, Robert N. Armstrong
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Patent number: 5413857Abstract: A blend of fibers is made of about 51 to 90% by weight of base fibers (a) selected from triangular trilobal fibers having a modification ratio ranging from 2.4 to 3.4; hollow pentagonal fibers; standard trilobal fibers having a modification ratio of at least 2.6; pointed lobe trilobal fibers having a modification ratio of at least 2.6; and mixtures thereof; and about 10 to 49% by weight of accent fibers (b) selected from standard trilobal fibers having a modification ratio ranging from 1.7 to 2.4; pointed lobe trilobal fibers having a modification ratio ranging from 2.0 to 2.9; and mixtures thereof. The fibers (a) and (b) have a denier per filament within the range represented by the area enclosed by sides A, B, C, D and E of FIG. 1. Where fibers (a) and (b) are both pointed lobe trilobal fibers with the same modification ratio and denier per filament, then fibers (a) are delustered and fibers (b) are undelustered.Type: GrantFiled: September 28, 1993Date of Patent: May 9, 1995Assignee: BASF CorporationInventors: Jerry A. Hagen, Wei Li
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Patent number: 5397227Abstract: A sealing plate upstream of a spinneret has cylindrical flow channels, at least some of which have a first diameter. Each of the flow channels corresponds in position to a bore in the spinneret plate. The number and denier of extruded filaments can be altered by simply changing the plate. The plate provides a seal by deflecting under the extrusion pressure.Type: GrantFiled: January 13, 1994Date of Patent: March 14, 1995Assignee: BASF CorporationInventors: John A. Hodan, Robert N. Armstrong, Wei Li
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Patent number: 5393219Abstract: A spin pack for spinning multiple components includes a distribution device which distributes mutually separated molten polymer streams to a spinneret so that each mutually separated molten polymer stream is accessible at each active spinneret backhole. Intermediate the spinneret and the distribution device, a selection assembly selects which, if any, mutually separated molten polymer stream flows into which backhole.Type: GrantFiled: April 30, 1993Date of Patent: February 28, 1995Assignee: BASF CorporationInventors: Gerry A. Hagen, Dominick A. Burlone, Phillip E. Wilson
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Patent number: 5389278Abstract: An aqueous cleaning composition has a pH of at least about 9.0 and is composed of up to about 30 percent by total composition weight of a wetting agent containing 1 to about 5 carbon atoms; between about 3 and about 15 percent by total composition weight of a peroxyhydrate oxidizing agent; and a pH adjustment substance.Type: GrantFiled: June 19, 1992Date of Patent: February 14, 1995Assignee: BASF CorporationInventors: Charles R. Minns, Thomas L. Varner, Jr.
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Patent number: 5380477Abstract: Fabric useful for processing into a fiber reinforced composite is made from multicomponent yarn having a thermoplastic matrix component of a first melting point if crystalline or a first softening point if not crystalline and a drawable, oriented, fibrous thermoplastic reinforcing component of a second melting point if crystalline or a second softening point if not crystalline, wherein said first melting or softening point is at least 5.degree. C. below said second melting or softening point.Type: GrantFiled: May 25, 1993Date of Patent: January 10, 1995Assignee: BASF CorporationInventors: George M. Kent, Otto M. Ilg, Matthew B. Hoyt
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Patent number: 5370757Abstract: A process for manufacturing substantially 100% nylon 6 carpet provides a nylon 6 face yarn to a nylon 6 support means so that the yarn and the support means form a carpet having a face side which is displayed when the carpet is installed and a back that binds the face yarn to the support means wherein said binding is with molten or dissolved nylon 6.Type: GrantFiled: August 30, 1991Date of Patent: December 6, 1994Assignee: BASF CorporationInventors: Thomas F. Corbin, Otto M. Ilg, Robert N. Armstrong
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Patent number: 5369483Abstract: The concentration of a colorant in a stream of molten polymer is measured by inserting a probe adjacent to the stream. The probe has integral therein collection means and illumination means. The steam is illuminated with the illumination means to cause electromagnetic radiation to be reflected from the molten polymer. The electromagnetic reflectance is collected, transmitted to a measurement device remote from the molten stream and quantified as a function of the concentration of the colorant.Type: GrantFiled: May 7, 1993Date of Patent: November 29, 1994Assignee: BASF CorporationInventor: Phillip E. Wilson
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Patent number: 5348556Abstract: An aqueous composition cleans and sanitizes carpets and the like. The composition contains (in percents by weight) from about 3 to about 15 percent peroxide, up to about 5% of volatile ammoniated substance, up to about 30% volatile wetting agent, and the balance water. The solution is substantially completely volatile so that it does not leave a soil harboring residue.Type: GrantFiled: October 27, 1993Date of Patent: September 20, 1994Assignee: BASF CorporationInventors: Charles R. Minns, Timothy W. Blount, Thomas L. Varner, Jr.
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Patent number: 5346620Abstract: The present invention is a process for treatment of waste water streams having a sodium sulfate content of above 20 percent. The process is useful for treating waste water generated in the production of polyethyleneimine and cyclohexanone. The process includes the steps of removing sodium sulfate from waste water by the addition of organic solvent. The waste water having reduced sodium sulfate content is then subjected to biological treatment with activated sludge. First the waste water is subjected to pre-treatment. Pre-treated waste water is combined other waste water and treated by denitrification and nitrification.Type: GrantFiled: August 31, 1993Date of Patent: September 13, 1994Assignee: BASF CorporationInventors: David C. Hendrix, Andrew J. McNabb, Nguyen L. Kim, Michael Loden, Jaime R. Morales
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Patent number: 5327622Abstract: Moresque or berber continuous filament yarn is prepared by supplying a first group of continuous filaments to a first entangling zone where harsh nodes are created so that the first group has a yarn harshness of at least about 200. One or more other groups of continuous filaments, which are differentially precolored or dyeable with respect to the first group, are joined to the first group and interlaced sufficiently to cohere all groups of continuous filaments without blending with the tightly interlaced first group. The finished yarn has node harshness less than 100.Type: GrantFiled: January 21, 1993Date of Patent: July 12, 1994Assignee: BASF CorporationInventors: Andrew M. Coons, Leonard C. Vickery, Melvin R. Thompson, Willis M. King
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Patent number: 5308563Abstract: A process for producing a conductive supported yarn includes melt spinning non-conductive nylon filaments into a first set of filaments, separating at least one of the filaments from the freshly spun first set into a second set of filaments, providing the second set of filaments to a suffusion coating process so that the suffusion coated second set has a resistivity of between about 10.sup.6 and about 10.sup.9 .OMEGA./cm, and then recombining the first set and the second set to form a supported yarn.Type: GrantFiled: August 31, 1992Date of Patent: May 3, 1994Assignee: BASF CorporationInventors: John A. Hodan, Otto M. Ilg, Melvin R. Thompson, Donald B. Thompson
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Patent number: 5294707Abstract: Polyamide is semi-continuously depolymerized by: (a) charging the polyamide to a depolymerization reactor containing 5 to 50% by weight of an unpolymerized catalyst; (b) melting the polyamide and subjecting the resultant melt to a flow of superheated steam to obtain a steam distillate; (c) separating amide monomers in the distillate from other volatiles therein; (d) when conversion to amide monomers is 40 to 90% complete, recharging polyamide to the depolymerization reactor; and (e) repeating steps (a)-(d) until a desired amount of polyamide is depolymerized.Type: GrantFiled: February 25, 1993Date of Patent: March 15, 1994Assignee: BASF CorporationInventor: Richard Kotek
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Patent number: 5290742Abstract: This invention relates to methods of preserving, storing, and using hydroxylamine production catalyst and, more particularly, to methods of preparing, storing, and using such catalyst in substantially oxygen free environments.Type: GrantFiled: April 29, 1992Date of Patent: March 1, 1994Assignee: BASF CorporationInventor: Thomas P. Losier
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Patent number: 5290741Abstract: This invention relates to methods of preserving, storing, and using hydroxylamine production catalyst and, more particularly, to methods of preparing, storing, and using such catalyst in substantially oxygen free environments.Type: GrantFiled: September 4, 1990Date of Patent: March 1, 1994Assignee: BASF CorporationInventor: Thomas P. Losier
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Patent number: 5252243Abstract: An aqueous cleaning composition suitable for removing stains, soils, or combinations thereof from synthetic polymer fibers. The composition finds particular application in removing coffee stains from fibers contained in textile products such as carpets. The composition has a pH in the range of from about 7.0 to about 12 and comprises a peroxyhydrate, i.e., hydrogen peroxide, and a water soluble alcohol having up to 5 carbon atoms, i.e., isopropyl.Type: GrantFiled: January 8, 1990Date of Patent: October 12, 1993Assignee: BASF CorporationInventor: Charles R. Minns
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Patent number: RE35108Abstract: A spin pack for spinning multiple components includes a distribution device which distributes mutually separated molten polymer streams to a spinneret so that each mutually separated molten polymer stream is accessible at each active spinneret backhole. Intermediate the spinneret and the distribution device, a selection assembly selects which, if any, mutually separated molten polymer stream flows into which backhole.Type: GrantFiled: April 8, 1994Date of Patent: December 5, 1995Assignee: BASF CorporationInventors: Gerry A. Hagen, Dominick A. Burlone, Phillip E. Wilson