Patents Represented by Attorney, Agent or Law Firm O'Connor & O'Connor
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Patent number: 6245861Abstract: High vinyl styrene-butadiene rubber is cured through the use of organic peroxides. The organic peroxide may be used singly or in combination with sulfur curing ingredients to cure the high vinyl styrene-butadiene rubber wherein the organic peroxide to sulfur curing ingredient is at a molar ratio of from about 3:1 to about 1:3.Type: GrantFiled: September 10, 1998Date of Patent: June 12, 2001Assignee: Hercules IncorporatedInventor: Jay Bernard Class
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Patent number: 6218588Abstract: The invention relates to aromatic modified aliphatic hydrocarbon resins giving excellent balance between tack and shear properties even at low coating weights. These resins are characterized in that they have a Ring and Ball (R&B) softening point of 94° C. or lower, a weight average molecular weight (Mw) of not more than 2000 Dalton, a Z-average molecular weight (Mz) of not more than 6000 Dalton and a mixed methylcyclohexane aniline cloud point (MMAP) between 25 and 45° C. The aromatic modified aliphatic hydrocarbon resins of the invention may be prepared by subjecting polymerization feeds containing petroleum feeds which comprise (a) C5 and C6 olefins and/or diolefins including cycloolefins, (b) aromatic monomers and (c) (di-)cyclodiolefins to a Friedel-Crafts polymerization. The invention is also directed to the use of the aromatic modified aliphatic hydrocarbon resins as mono-tackifiers in adhesive formulations as well as to an adhesive tape comprising these resins.Type: GrantFiled: February 8, 1999Date of Patent: April 17, 2001Assignee: Hercules IncorporatedInventors: Nicolaas Adriaan Dommisse, Christiaan Pieter Louis Charles Donker, Michael Hendrikus Theelen, Jacobus van Rijn, Gerard Arie Verrijzer
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Patent number: 6197919Abstract: This invention relates to resins useful for imparting dry-strength and temporary wet-strength to paper, the process of incorporating these resins into paper and the paper produced containing the resins. The resin comprises an amphoteric polymer produced through polymerization of an anionic monomer, a monomer containing aldehyde functionality and a cationic monomer.Type: GrantFiled: May 30, 1997Date of Patent: March 6, 2001Assignee: Hercules IncorporatedInventors: Mark T. Crisp, Richard J. Riehle
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Patent number: 6184308Abstract: A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 40% to 90% by weight based on total monomers of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene, and (b) about 60% to 10% by weight based on total monomers of a specified vinyl aromatic component, preferably alpha-methylstyrene; para-methyl-&agr;-methylstyrene; 2,4-diphenyl-4-methyl-1-pentene, or mixtures thereof, and (2) recovering a product having a Ring and Ball softening point of about 70° to about 150° C. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.Type: GrantFiled: February 3, 1998Date of Patent: February 6, 2001Assignee: Hercules IncorporatedInventors: Norman Edward Daughenbaugh, Dane George Goodfellow, Deborah Ann Riedl
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Patent number: 6159721Abstract: Amine modified pectins wherein the amine is a water soluble amine, amino acid, etc. and process to catalyze the reaction of water soluble polymers having alkoxyester and carboxylic acid functionality, such as polysaccharides, with a primary or secondary amine in the presence of a protease and water.Type: GrantFiled: August 20, 1997Date of Patent: December 12, 2000Assignee: Hercules IncorporatedInventors: Huai Nan Cheng, Qu-Ming Gu, Robert G. Nickol
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Patent number: 6124124Abstract: Composition comprising oxidizable galactose type of alcohol configuration containing polymer (such as guar) which is in solid state and galactose oxidase. Application of such oxidized polymers in the papermaking process results in superior paper strength characteristics.Type: GrantFiled: December 31, 1997Date of Patent: September 26, 2000Assignee: Hercules IncorporatedInventors: Richard Lee Brady, Raymond Thomas Leibfried, Sr., Tuyen Thanh Nguyen
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Patent number: 6116683Abstract: An improved bicycle seat is disclosed. The seat comprises a top surface and a bottom surface with the surfaces being connected by means of a front wall and a back wall and a pair of side walls. The seat has a vertical axis and a horizontal axis through the center of the seat. The seat pivots rotationally upwardly and downwardly through an arc in a vertical plane about the horizontal axis and pivots rotationally in a forward and rearward manner through an arc in a horizontal plane about said vertical axis when a bicycle is being pedaled.Type: GrantFiled: May 19, 1997Date of Patent: September 12, 2000Inventor: Dillon Maier
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Patent number: 6106939Abstract: The invention provides a petroleum-based aliphatic resin having: a) a Ring and Ball (R&B) softening point in the range of about 75 to about 110.degree. C., b) a weight average molecular weight (Mw) of about 1000 to about 2600 Dalton, a z-average molecular weight (Mz) from about 1900 to about 5000 Dalton and an Mw/Mn below about 2.0, c) a level of aromatic protons below about 1.5% with respect to the total protons determined by .sup.1 H-NMR, and d) a mixed methylcyclohexane aniline cloud point (MMAP) of about 90.degree. C. or less. The resins according to the invention are characterized by a high amount of cyclic structures. Further disclosed is a method of independently controlling the R&B softening point and the molecular weight of an aliphatic resin composition during its preparation by polymerization of a petroleum-based feed, the method being characterized in that the amount of cyclic structures in the resins is increased.Type: GrantFiled: March 3, 1997Date of Patent: August 22, 2000Assignee: Hercules IncorporatedInventors: Christiaan Pieter Donker, Berend Lenselink, Michael Hendrikus Theelen
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Patent number: 6103814Abstract: Disclosed are hot-melt adhesive compositions suitable for the manufacture of soft goods. They have a melt viscosity of 60,000 mPa.s or less at a temperature of 120.degree. C. and include: (a) 50 to 150 parts by weight of a styrenic block copolymer or mixtures and/or modified and/or hydrogenated derivatives thereof; (b) 20 to 450 parts by weight of a tackifying resin which, when incorporated into a reference composition, leads to the following properties:a tan .delta. value of 3.5 or less, wherein tan .delta. is defined as the ratio between the loss modulus and the storage modulus of said composition andan elastic retention on spandex fibers (300%) or natural latex rubber (200%) after 4 h at 40.degree. C. of 70% or more; anda crossover temperature of 95.degree. C. or less.Further disclosed are novel partially hydrogenated hydrocarbon resins which are useful as tackifying resins and have the following properties: (a) a R&B softening point (R&B) of 50.degree. C. to 150.degree. C.Type: GrantFiled: April 10, 1997Date of Patent: August 15, 2000Assignee: Hercules IncorporatedInventors: Jan vanDrongelen, Johannes Cornelis M. Simons
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Patent number: 6099215Abstract: A device for establishing a seal between a pair of articles, has a first resilient member arranged to be positioned between the articles, so that the first resilient member and the articles collectively form a first chamber. A vacuum supply is provided for supplying a vacuum to the first chamber. A pressure supply is also provided for applying a pressure to the first resilient member to force the first resilient member against both of the articles.Type: GrantFiled: February 17, 1998Date of Patent: August 8, 2000Assignee: Quickmill Inc.Inventor: David C. Piggott
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Patent number: 6050418Abstract: A storage case for cosmetics and contact lenses is disclosed. The lens case has a front member and a rear member in which the front and rear members have an interior surface and an exterior surface and a top edge and a bottom edge and two side edges. The front member and rear member are hingedly connected together at one of the side edges and the remaining side edges are unconnected to each other but in contact with each other when the case is in a closed condition. The case is retained in a closed condition by a receptacle that is positioned within the case and the case is in an open condition when the receptacle is removed from within the case.Type: GrantFiled: July 27, 1998Date of Patent: April 18, 2000Inventor: Barbara Kohler
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Patent number: 6022717Abstract: Process for the oxidation of the oxidizable galactose type of alcohol in oxidizable galactose type of alcohol configuration containing polymer, such as guar, with galactose oxidase in the presence of oxidation promoting chemicals.Type: GrantFiled: December 31, 1997Date of Patent: February 8, 2000Assignee: Hercules IncorporatedInventors: Richard Lee Brady, Raymond Thomas Leibfried, Sr.
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Patent number: 5981805Abstract: Blends of meta and para isomers of .alpha., .alpha.'-bis(t-butylperoxy) diisopropylbenzene are disclosed as well as methods of producing blends of .alpha., .alpha.'-bis(t-butylperoxy) diisopropylbenzene with desired ratios of meta and para isomers.Additionally, blends of meta and para isomers of .alpha., .alpha.'-bis(t-butylperoxy) diisopropylbenzene and tertiary alkyl cumyl peroxides are disclosed.The peroxides are useful for absorbing in polymers and subsequently crosslinking the polymers. The peroxide blends may be adjusted to have melt points below temperatures at which the polymers become difficult to process during the absorption step because of stickiness.Type: GrantFiled: July 11, 1997Date of Patent: November 9, 1999Assignee: Hercules IncorporatedInventor: Fredrick F. Nelson
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Patent number: 5953871Abstract: A modular wall panel ready for installation in a medical facility, the panel having at least one medical gas conduit positioned therein. The modular wall panel has a pair of opposed side sections and a frame to support each of the side sections. The panel has a pair of longitudinal edge regions, the frame including a generally upright frame portion extending along each of the longitudinal edge regions to form a passage therealong for engagement with an adjacent wall panel. The spacing between the upright frame portions and the spacing between the opposed side sections together define an inner cavity. Preferably, the upright frame portion is U-shaped and at least one generally U-shaped transverse frame portion extends between the longitudinal frame portions and the transverse frame portion includes an aperture therein and a medical gas conduit extends through the cavity and is positioned in the aperture.Type: GrantFiled: February 3, 1998Date of Patent: September 21, 1999Assignee: Design Board Industries IncInventors: Neil MacConnell, Donald Hall, Robert Ruso
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Patent number: 5817900Abstract: The color of hydrocarbon resins having carbon-carbon double bonds and containing color bodies is lightened by a hydrotreating process consisting essentially of contacting the resin with hydrogen at a hydrogen pressure of 1 to about 20 bar (14.5 to about 290 psi) in the presence of a catalyst that promotes the hydrogenation of the color bodies without substantially changing the softening point or the content of carbon-carbon double bonds in the resin. The preferred catalyst is nickel/zinc oxide on SiO.sub.2.Type: GrantFiled: February 1, 1996Date of Patent: October 6, 1998Assignee: Hercules IncorporatedInventors: Erik Berrevoets, Jan van Drongelen
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Patent number: 5739239Abstract: A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 40% to 90% by weight based on total monomers of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene, and (b) about 60% to 10% by weight based on total monomers of a specified vinyl aromatic component, preferably alpha-methylstyrene; para-methyl-.alpha.-methyl-styrene; 2,4-diphenyl-4-methyl-1-pentene, or mixtures thereof, and (2) recovering a product having a Ring and Ball softening point of about 70.degree. to about 150.degree. C. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.Type: GrantFiled: June 7, 1995Date of Patent: April 14, 1998Assignee: Hercules IncorporatedInventors: Norman Edward Daughenbaugh, Dane George Goodfellow, Deborah Ann Riedl
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Patent number: 5686537Abstract: Controlling premature curing of vulcanizable halogen-containing polymer compounds.Type: GrantFiled: June 1, 1995Date of Patent: November 11, 1997Assignee: Hercules IncorporatedInventor: Jay Bernard Class
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Patent number: 5665830Abstract: A process of reducing the effects of moisture during storage prior to vulcanization of a vulcanizable halogen-containing polymer composition containing water, comprising blending before storage, into said vulcanizable composition, a thioester derivative of 2,5-dimercapto-1,3,4-thiadiazole crosslinking agent and polyethylene glycol, whereby the scorch time of the vulcanizable compound is not significantly affected by the water content of said composition. The invention is also directed to a vulcanizable halogen containing material and a dry pourable composition, both comprising the crosslinking agent and polyethylene glycol, as well as a process of reworking such a halogen-containing vulcanizable composition.Type: GrantFiled: July 22, 1996Date of Patent: September 9, 1997Assignee: Hercules IncorporatedInventor: Jay Bernard Class
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Patent number: H1743Abstract: Method and apparatus for inventory monitoring a supply consumed in the manufacturing of a finished product. An inventory management system monitors the quantity of supplies in a storage facility. Based upon historical data related to the rate of usage of the supplies, the inventory management system determines the period of time until the stored supplies are depleted. If the supplies are depleted prior to a next scheduled delivery of replacement supplies, the inventory management system communicates with the supplier to move ahead the delivery date. Conversely, if the inventory management system determines that the supplies are being consumed at a rate lower than projected, the inventory management system will instruct the supplier to delay a shipment date. Supervisory personnel may access the system from a local location or a remote location. In addition, an alarm is activated when there is a sudden change in the rate of usage of the stored supplies.Type: GrantFiled: March 17, 1995Date of Patent: August 4, 1998Assignee: Hercules IncorporatedInventors: Henry K. Graves, Robert W. Perkins, Jack Phillips Mills, Jr., Gerald Richard Giles
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Patent number: D415903Type: GrantFiled: May 28, 1997Date of Patent: November 2, 1999Inventor: Moses Richard Schultz