Patents Represented by Attorney, Agent or Law Firm Daniel B. Reece, IV
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Patent number: 5759485Abstract: This invention relates to water-soluble corrosion inhibiting compositions and the method of making the same. Specifically, this invention relates to inhibiting the corrosion of metals, particularly those employed in the production, processing, and transportation of petrochemical products. These water-soluble corrosion inhibiting compositions are created by neutralizing a C.sub.22 tricarboxylic acid with aminoethylethanolamine and a member selected from the group consisting of imidazoline, amidoamine, and combinations thereof. The resulting compositions exhibit excellent film persistency characteristics even when utilized in small amounts.Type: GrantFiled: May 12, 1997Date of Patent: June 2, 1998Assignee: Westvaco CorporationInventors: Eugene R. Fischer, Paul G. Boyd
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Patent number: 5755830Abstract: Improved dyestuff compositions comprising a dye cake and a dye dispersant are disclosed wherein the dye dispersant comprises sulfonated or sulfomethylated lignin of increased activity and improved heat stability properties and which dispersants are disclosed to be prepared by substantial removal of the low molecular weight component of the sulfonated and sulfomethylated lignin. Exclusion of the low molecular weight portion of the dispersant may be accomplished by fractionation of the sulfonated or sulfomethylated lignin to remove a substantial portion of the molecules having a molecular weight below 3,000. Alternatively, in the case of lignin recovered from sulfate or soda wood pulping processes, the lignin may be fractionated to remove a substantial portion of the molecules having a molecular weight below 3,000 prior to sulfonation or sulfomethylation.Type: GrantFiled: September 12, 1996Date of Patent: May 26, 1998Assignee: Westvaco CorporationInventors: Peter Dilling, Sallie B. Huguenin
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Patent number: 5749926Abstract: Improved dyestuff compositions comprising a dye cake and a dye dispersant are disclosed wherein the dye dispersant comprises sulfonated or sulfomethylated lignin of increased activity and improved heat stability properties and which dispersants are disclosed to be prepared by substantial removal of the low molecular weight component of the sulfonated and sulfomethylated lignin. Exclusion of the low molecular weight portion of the dispersant may be accomplished by fractionation of the sulfonated or sulfomethylated lignin to remove a substantial portion of the molecules having a molecular weight below 3,000. Alternatively, in the case of lignin recovered from sulfate or soda wood pulping processes, the lignin may be fractionated to remove a substantial portion of the molecules having a molecular weight below 3,000 prior to sulfonation or sulfomethylation.Type: GrantFiled: September 12, 1996Date of Patent: May 12, 1998Assignee: Westvaco CorporationInventors: Peter Dilling, Sallie B. Huguenin
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Patent number: 5736481Abstract: Extruded pellets comprising a majority of activated carbon particles and an organic binder provide improved performance when processed through tumbling equipment while the pellets are in their "green" state, i.e., pellets which are fresh off the extruder and contain activated carbon, binder, and water and have not been subjected to any thermal processing (drying). The tumbling action both smoothes the pellets (by closing any cracks and greatly improving appearance) and increases the density of the pellets, e.g., by increasing particle density and reducing voids between the pellets. Improved performance results from an ability to increase the weight of carbon pellets which can be packed into a fixed volume and thereby increase the volumetric working capacity of the bed for adsorbing/desorbing vapors. Another benefit is to greatly reduce the levels of dust associated with the carbon, both the initial dust and the dust of attrition.Type: GrantFiled: September 19, 1996Date of Patent: April 7, 1998Assignee: Westvaco CorporationInventor: James R. Miller
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Patent number: 5736485Abstract: Extruded pellets comprising a majority of activated carbon particles and an organic binder provide improved performance when processed through tumbling equipment while the pellets are in their "green" state, i.e., pellets which are fresh off the extruder and contain activated carbon, binder, and water and have not been subjected to any thermal processing (drying). The tumbling action both smoothes the pellets (by closing any cracks and greatly improving appearance) and increases the density of the packed bed, e.g., by increasing particle density and reducing voids between the pellets. Improved performance results from an ability to increase the weight of carbon pellets which can be packed into a fixed volume and thereby increase the volumetric working capacity of the bed for adsorbing/desorbing vapors. Another benefit is to greatly reduce the levels of dust associated with the carbon, both the initial dust and the dust attrition.Type: GrantFiled: September 19, 1996Date of Patent: April 7, 1998Assignee: Westvaco CorporationInventor: James R. Miller
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Patent number: 5731191Abstract: This invention relates to a method for regeneration of coniferous plants. In particular, this invention relates to an improved method for producing and developing somatic embryos for somatic embryogenesis processes for plants of the genus Pinus and Pinus interspecies hybrids by including polyethylene glycol in the development media. This method is well suited for producing clonal planting stock useful for reforestation.Type: GrantFiled: December 20, 1996Date of Patent: March 24, 1998Assignee: Westvaco CorporationInventors: Mark R. Rutter, Levis W. Handley, III, Michael R. Becwar
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Patent number: 5731203Abstract: This invention relates to a method for regeneration of coniferous plants. In particular, this invention relates to an improved method for developing viable stage 3 embryos from embryogenic cultures for somatic embryogenesis processes for plants of the genus Pinus and Pinus interspecies hybrids. This method is well suited for producing clonal planting stock useful for reforestation.Type: GrantFiled: June 14, 1996Date of Patent: March 24, 1998Assignee: Westvaco CorporationInventor: Levis W. Handley, III
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Patent number: 5731204Abstract: This invention relates to a method for regeneration of coniferous plants. In particular, this invention relates to an improved method for producing and developing somatic embroyos for somatic embryogenesis processes for plants of the genus Pinus and Pinus interspecies hybrids by including polyethylene glycol in the development media. This method is well suited for producing clonal planting stock useful for reforestation.Type: GrantFiled: December 20, 1996Date of Patent: March 24, 1998Assignee: Westvaco CorporationInventors: Mark R. Rutter, Levis W. Handley, III, Michael R. Becwar
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Patent number: 5723020Abstract: The invention relates to an improvement in the art of making saturating kraft paper. In particular, the invention relates to a method for enhancing the fire-retardancy of saturating kraft paper containing alumina trihydrate and phenolic resin by including sodium borate into the paper. The improved saturating kraft is particularly useful in the production of fire-retardant high-pressure laminated materials.Type: GrantFiled: November 1, 1996Date of Patent: March 3, 1998Assignee: Westvaco CorporationInventors: Philip L. Robinson, Ramazan Benrashid
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Patent number: 5712164Abstract: This invention relates to a method for reducing contamination of in vitro cultures. In particular, this invention relates to a method for reducing contamination of in vitro cultures of woody plant mature shoot material and shoot material of outdoor origin.Type: GrantFiled: June 1, 1995Date of Patent: January 27, 1998Assignee: Westvaco CorporationInventor: Jay Eric Coke
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Patent number: 5710092Abstract: A highly microporous activated carbon is disclosed which is prepared by activation of an active carbon precursor material with a potassium hydroxide solution, pre-drying the blend to below 25% moisture content, activating this blend at from about 650.degree. to about 1100.degree. C., and acid washing and drying the microporous activated carbon product and which is characterized by greater than 50% of its total pore volume comprising pores of from above 8 .ANG. to 20 .ANG. in width and greater than 70% of its total pore volume comprising pores of less than 20 .ANG. in width and greater than 95% of its total pore volume comprising pores of less than 50 .ANG. in width.Type: GrantFiled: March 14, 1995Date of Patent: January 20, 1998Assignee: Westvaco CorporationInventor: Frederick S. Baker
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Patent number: 5693702Abstract: The invention relates to rosin-supported emulsion polymer compositions which are modified with urea-containing monomers and/or urethane-containing monomers reacted with conventional acrylic or styrenic monomers to produce emulsion polymer latices. These emulsion polymer latices can be utilized to formulate printing inks exhibiting superior peel resistances for use in adhesive and extrusion lamination printings.Type: GrantFiled: February 16, 1996Date of Patent: December 2, 1997Assignee: Westvaco CorporationInventor: G. Frederick Hutter
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Patent number: 5691405Abstract: The invention relates to rosin-supported emulsion polymer compositions which are modified with urea-containing monomers and/or urethane-containing monomers reacted with conventional acrylic or styrenic monomers to produce emulsion polymer latices. These emulsion polymer latices can be utilized to formulate printing inks exhibiting superior peel resistances for use in adhesive and extrusion lamination printings.Type: GrantFiled: September 11, 1996Date of Patent: November 25, 1997Assignee: Westvaco CorporationInventor: G. Frederick Hutter
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Patent number: 5691270Abstract: Extruded pellets comprising a majority of activated carbon particles and a minority of a binder material are disclosed to provide improved performance when processed through tumbling equipment while the pellets are in their "green" state (i.e., pellets which are fresh off the extruder and contain activated carbon), binder material, and water and have not been subjected to any thermal processing (drying or calcining). The tumbling action both smooths and densifies (i.e., reduces void volume within) the pellet, thereby closing any cracks and greatly improving appearance. Improved performance results from an ability to increase the weight of carbon pellets which can be packed into a fixed volume and thereby increase the volumetric working capacity of the bed for adsorbing/desorbing vapors. Another benefit is to greatly reduce the levels of dust associated with the carbon, both the initial dust and the dust attrition.Type: GrantFiled: March 8, 1996Date of Patent: November 25, 1997Assignee: Westvaco CorporationInventor: James R. Miller
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Patent number: 5677185Abstract: The invention relates to a method for regeneration of plants of the genus Pinus by culturing explants of immature zygotic embryos on culture initiation medium containing abscisic acid, nutrients, growth hormones, sugar and a gelling agent to grow embryogenic tissue for cryopreservation. Culturing of the embryogenic tissue is continued on culture maintenance medium, embryo development medium, and germination medium. The germinated embryos are further converted to acclimatized plants for field planting. The method is well suited for producing clonal planting stock useful for reforestation.Type: GrantFiled: May 14, 1996Date of Patent: October 14, 1997Assignee: Westvaco CorporationInventor: Levis W. Handley, III
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Patent number: 5670562Abstract: This invention relates to rapid set, medium set, and slow set anionic emulsions prepared from straight bitumen or bitumen modified by the incorporation of polymers such as styrene butadiene rubbers (SBR), styrene block copolymers (SBS), ethylene vinyl acetate copolymers (EVA), and other suitable modifiers. The invention also relates to emulsions modified by the incorporation of solvents (such as diesel oil or kerosene) or by the addition of polymer latices (such as SBR-latex or natural rubber latex). More particularly, the invention relates to improved methods for enhancing adhesion between asphalt and aggregate in anionic solventless and solvent-containing bituminous emulsions wherein the emulsifiers are alkali earth salts of tall oil fatty acids, fortified tall oil fatty acids, tall oil rosin and fortified rosin as well as combinations of kraft lignin and nonionic emulsifiers.Type: GrantFiled: October 15, 1996Date of Patent: September 23, 1997Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 5668197Abstract: This invention relates to rapid set, medium set, and slow set anionic emulsions prepared from straight bitumen or bitumen modified by the incorporation of polymers, solvents, or polymer latices. Particularly, the invention relates to improved methods for enhancing adhesion between the asphalt and the aggregate in avionic solventless and solvent-containing bituminous emulsions wherein the emulsifiers are alkali earth salts of tall oil fatty acids, fortified tall oil fatty acids, tall oil rosin and fortified rosin as well as combinations of kraft lignin and nonionic emulsifiers. The adhesion promoters utilized in these improved methods are the reaction products of styrene (.alpha.-methyl styrene)-acrylic (metacrylic) acid polymers with polyalkylene amines. Further improvement can be obtained by using tall oil fatty acid or fortified tall oil fatty acids as co-reactants in the production of the polyamidoamine products.Type: GrantFiled: August 12, 1996Date of Patent: September 16, 1997Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 5667578Abstract: This invention relates to rapid set, medium set, and slow set anionic emulsions prepared from straight bitumen or bitumen modified by the incorporation of polymers such as styrene butadiene rubbers (SBR), styrene block copolymers (SBS), ethylene vinyl acetate copolymers (EVA), and other suitable modifiers. The invention also relates to emulsions modified by the incorporation of solvents (such as diesel oil or kerosene) or by the addition of polymer latices (such as SBR-latex or natural rubber latex). More particularly, the invention relates to improved methods for enhancing adhesion between asphalt and aggregate in anionic solventless and solvent-containing bituminous emulsions wherein the emulsifiers are alkali earth salts of tall oil fatty acids, fortified tall oil fatty acids, tall oil rosin and fortified rosin as well as combinations of kraft lignin and nonionic emulsifiers.Type: GrantFiled: September 24, 1996Date of Patent: September 16, 1997Assignee: Westvaco CorporationInventor: Peter Schilling
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Patent number: 5656679Abstract: This invention relates to improved water-soluble acrylic latex compositions. In particular, this invention relates to acrylic latex compositions produced by reacting monomers with water-soluble support resins derived from reacting a modified rosin with an alkanolamine containing at least one secondary amine and at least one hydroxyl group. These acrylic latex compositions can be utilized to produce water-based flexographic and gravure ink formulations.Type: GrantFiled: May 17, 1996Date of Patent: August 12, 1997Assignee: Westvaco CorporationInventor: G. Frederick Hutter
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Patent number: 5639346Abstract: An improved process is disclosed for removing "stickies" from waste paper which contains hot-melt and pressure-sensitive adhesives and lattices to produce high quality (high brightness, little to no dirt content) pulp with little or no fiber loss. The process involves attachment of sticky particles in the waste paper pulp to a magnetic carrier material with the help of an agglomeration agent followed by removal of the attached sticky particles by magnetic separation. The magnetic treatment preferably is conducted at ambient or greater temperature, at neutral to alkaline pH, and at a low pulp consistency. Agglomeration and magnetite addition, followed by exposure of the repulped waste paper to a magnetic field provides near complete sticky removal over exposure to the magnetic field without such pre-treatment.Type: GrantFiled: May 22, 1995Date of Patent: June 17, 1997Assignee: Westvaco CorporationInventors: Nipun Marwah, Allen A. Gold