Wood Timber Product (e.g., Piling, Post, Veneer, Etc.) Patents (Class 428/541)
  • Patent number: 5908708
    Abstract: Aqueous dispersion of a particulate solid containing a low boiling organic liquid in which the particulate solid has a hydrophobic outer surface which is suitable for applying to a substrate to form a continuous hydrophobic film thereon.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: June 1, 1999
    Assignees: Engelhard Corporation, The United States of America as represented by the Secretary of Agriculture
    Inventors: Dennis G. Sekutowski, Gary J. Puterka, David Michael Glenn
  • Patent number: 5891921
    Abstract: Wood preservative systems comprising (a) a biocidal effective amount of (i) at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium carboxylate having the formula ##STR1## wherein R.sup.1 and R.sup.2 are a C.sub.8 -C.sub.12 alkyl group; R.sup.3 is a substituted or unsubstituted, interrupted or uninterrupted C.sub.1 -C.sub.100 group; l and q independently are 1, 2 or 3 and (l) (q) is 1, 2, or 3; and n is 0 or an integer from 1 to 50; (ii) at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium borate having the formula ##STR2## wherein R.sup.1 and R.sup.2 are defined as above, and a is 2 or 3, but when a is 2, b is 0 or 1, and when a is 3, b is 0, 1, or 2; or (iii) a combination of (i) and (ii); and (b) a solvent are provided. These carboxylate quats as well as carboxylate quats wherein R.sup.1 is a C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group and R.sup.2 is a C.sub.8 -C.sub.20 alkyl group are preferably prepared by an indirect or a direct synthesis.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: April 6, 1999
    Assignee: Lonza Inc.
    Inventor: Leigh E. Walker
  • Patent number: 5885722
    Abstract: A method and apparatus for applying pressure sensitive adhesive to a substrate, in which the adhesive is deposited on a transfer surface, such as a circulating transfer belt, dried, and subsequently transferred to a plurality of overlapping sheets. The sheets are preferably coated with a primer or a low adhesion backsize, or both, prior to application of the adhesive.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: March 23, 1999
    Assignee: Minnesota Mining and Manufacturing
    Inventor: Johannes A. Ritter
  • Patent number: 5866270
    Abstract: A method of hardening wooden flooring blanks by impregnating the wooden flooring blanks with a hardener while the wooden flooring blanks are in a bundle, wherein the bundled hardened wooden flooring blanks have improved separation characteristics following completion of the impregnation treatment. The method includes the steps of assembling a plurality of wooden flooring product blanks into a bundle of blanks in surface-to-surface contact with each other and enclosing the wooden flooring blanks in a pressure vessel. The pressure vessel is evacuated and an effective quantity of a hardening composition for being impregnated into the wooden flooring blanks is introduced into the pressure vessel. An effective quantity of a polyethylene glycol composition is introduced into the pressure vessel. The wooden flooring blanks are soaked in the hardening composition and the polyethylene glycol composition for a predetermined period of time.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: February 2, 1999
    Assignee: Triangle Pacific Corporation
    Inventor: William O. West, Jr.
  • Patent number: 5855817
    Abstract: Polyhydroxyl and polyether hydroxyl esters of fatty acids and polyether hydroxides are provided as waterproofers. These waterproofers are also combined with quaternary ammonium compositions and a solvent in waterproofing, wood preservative systems. Preferred quaternary ammonium compounds have chloride, hydroxide, carbonate, carboxylate, or borate counter ions.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: January 5, 1999
    Assignee: Lonza, Inc.
    Inventor: Leigh E. Walker
  • Patent number: 5760088
    Abstract: A high yield method for the preparation of C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl, C.sub.8 -C.sub.16 alkyl quaternary ammonium hydroxide is provided whereby two reactants, a corresponding quaternary ammonium chloride and a metal hydroxide, are reacted in a solvent comprising a C.sub.1 -C.sub.4 normal alcohol. The amount of metal hydroxide reactant is that amount sufficient to yield the quaternary ammonium hydroxide and a metal chloride.Also provided are wood preservative systems which include (a) a biocidal effective amount of at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium hydroxide and (b) a solvent, as well as a method for preserving a wood substrate whereby the substrate is treated with the preservative system.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: June 2, 1998
    Assignee: Lonza Inc.
    Inventor: Leigh E. Walker
  • Patent number: 5731096
    Abstract: A wood article is submitted to a vacuum in an autoclave to remove air that it contains. Then, a solution which contains a wood preservative, a water-soluble cross-linkable prepolymer and a polymerization initiator is introduced into the autoclave. Polymerization to form a polymeric network in the wood article is carried out in an atmosphere substantially free of oxygen, while the preservative is chemically fixed to the wood. The result is a wood article with a permanently reduced hardness and an increased moisture content at equilibrium.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: March 24, 1998
    Assignee: Hydro-Quebec
    Inventors: Andre Besner, Alain Vallee, Jean-Francois Labrecque, Roland Gilbert
  • Patent number: 5707690
    Abstract: The invention relates to a method of protecting surfaces of wood against damage by light by treatment with a coating composition comprising a benzophenone of the formula I ##STR1## in which the substituents are defined as in claim 1.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: January 13, 1998
    Assignee: Ciba-Geigy Corporation
    Inventors: Andreas Valet, Roger Meuwly
  • Patent number: 5700841
    Abstract: Wood preservative systems comprising (a) a biocidal effective amount of (i) at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium carboxylate having the formula ##STR1## wherein R.sup.1 and R.sup.2 are a C.sub.8 -C.sub.12 alkyl group; R.sup.3 is a substituted or unsubstituted, interrupted or uninterrupted C.sub.1 -C.sub.100 group; l and q independently are 1, 2 or 3 and (l) (q) is 1, 2, or 3; and n is 0 or an integer from 1 to 50; (ii) at least one di C.sub.8 14 C.sub.12 alkyl quaternary ammonium borate having the formula ##STR2## wherein R.sup.1 and R.sup.2 are defined as above, and a is 2 or 3, but when a is 2, b is 0 or 1, and when a is 3, b is 0, 1, or 2; or (iii) a combination of (i) and (ii); and (b) a solvent are provided. These carboxylate quats as well as carboxylate quats wherein R.sup.1 is a C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group and R.sup.2 is a C.sub.8 -C.sub.20 alkyl group are preferably prepared by an indirect or a direct synthesis.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: December 23, 1997
    Assignee: Lonza Inc.
    Inventor: Leigh E. Walker
  • Patent number: 5672568
    Abstract: There is described the use of compounds of the formula (II) ##STR1## in which R has the meaning given in the description, as root penetration inhibitors.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: September 30, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lutz Heuer, Heinz-Joachim Rother
  • Patent number: 5652065
    Abstract: Wood veneers having enhanced strength and/or stiffness, wood products made therefrom, and methods for manufacturing such veneers and wood products are disclosed. A treated veneer having enhanced strength and stiffness has a population of compacted wood cells extending across at least a portion of the length and width dimensions and into the thickness dimension of the veneer to confer an increased density level, and thus increased strength and/or stiffness levels, to the veneer. Interspersed in the compacted wood cells is a non-saturating loading level of a cured rigid thermoset material which maintains compaction of the compacted cells even after prolonged soaking in water. The preferred loading level is just what is required to maintain compaction of the cells. The preferred thermoset material is polyurea which is formed from a polyisocyanate resin applied to at least one major surface of the veneer followed by hot-pressing the veneer.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: July 29, 1997
    Assignee: Weyerhaeuser Company
    Inventors: David W. Park, Frank R. Hunter, Alkiviadis G. Dimakis
  • Patent number: 5641726
    Abstract: Wood preservative systems comprising (a) a biocidal effective amount of (i) at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium carboxylate having the formula ##STR1## wherein R.sup.1 and R.sup.2 are a C.sub.8 -C.sub.12 alkyl group; R.sup.3 is a substituted or unsubstituted, interrupted or uninterrupted C.sub.1 -C.sub.100 group; l and q independently are 1, 2 or 3 and (l)(q) is 1, 2, or 3; and n is 0 or an integer from 1 to 50; (ii) at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium borate having the formula ##STR2## wherein R.sup.1 and R.sup.2 are defined as above, and a is 2 or 3, but when a is 2, b is 0 or 1, and when a is 3, b is 0, 1, or 2; or (iii) a combination of (i) and (ii); and (b) a solvent are provided. These carboxylate quats as well as carboxylate quats wherein R.sup.1 is a C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group and R.sup.2 is a C.sub.8 -C.sub.20 alkyl group are preferably prepared by an indirect or a direct synthesis.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: June 24, 1997
    Assignee: Lonza, Inc.
    Inventor: Leigh E. Walker
  • Patent number: 5612142
    Abstract: Wood and other cellulose-based products are preserved with a water-based treating solution containing a phenolic resin prepolymer such as phenol formaldehyde resin prepolymer, a resorcinol formaldehyde resin prepolymer and water. The treatment is carried out by exposing the wood or other cellulose-based product, while submerged in the treating solution, to one or more cycles of reduced pressure (i.e. vacuum) and elevated pressure.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: March 18, 1997
    Assignee: Polymer Wood Processors, Inc.
    Inventor: Jean Lewis, deceased
  • Patent number: 5565263
    Abstract: A composite molded article is formed by forming a composite wood overlay surface material by laminating a wood veneer on a front side of a base sheet selected from one of a metal sheet and a resin sheet; laminating a back sheet selected from one of a porous material and a fibrous material on a back side of said base sheet; coating said wood veneer incorporated in said composite wood overlay surface material; placing said composite wood overlay surface material in a mold; and injecting a resin onto said back sheet incorporated in said composite wood overlay surface material. Thus, the composite molded article has an excellent appearance of coating on the surface of the article.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: October 15, 1996
    Assignee: Yamaha Corporation
    Inventors: Hisayoshi Ohsumi, Takeshi Matsumoto, Shinji Kato, Mitsuo Ishizuka, Shoichi Kaneko
  • Patent number: 5559155
    Abstract: A high yield method for the preparation of C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl, C.sub.8 -C.sub.16 alkyl quaternary ammonium hydroxide is provided whereby two reactants, a corresponding quaternary ammonium chloride and a metal hydroxide, are reacted in a solvent comprising a C.sub.1 -C.sub.4 normal alcohol. The amount of metal hydroxide reactant is that amount sufficient to yield the quaternary ammonium hydroxide and a metal chloride.Also provided are wood preservative systems which include (a) a biocidal effective amount of at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium hydroxide and (b) a solvent, as well as a method for preserving a wood substrate whereby the substrate is treated with the preservative system.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: September 24, 1996
    Assignee: Lonza Inc.
    Inventor: Leigh E. Walker
  • Patent number: 5527619
    Abstract: A method of improving tannin stain blocking in a tannin-containing substrate is disclosed which involves applying to the substrate a blend of:(a) an acid-functional polymer formed from about 0.1% by weight to about 20% by weight, based on the total weight of said polymer, of at least one acid-functional monomer; and(b) about 0.1% by weight to about 20% by weight, based on the weight of said acid-functional polymer, of at least one organosilane having a number average molecular weight of from about 100 to about 10,000.A method of improving the physical properties of the coating composition, including viscosity, adhesion, scrub resistance, water whitening resistance, corrosion resistance, hot block resistance and water, fire, smoke, nicotine, pen and ink stain blocking is also disclosed.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: June 18, 1996
    Assignee: Rohm and Haas Company
    Inventors: Joseph M. Rokowski, Kenneth M. Donnelly, Robert R. Kuhn
  • Patent number: 5523487
    Abstract: Quaternary ammonium carbonates having the formula ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group and R.sup.2 is a C.sub.8 -C.sub.20 alkyl group have been synthesized.These compounds and compositions further comprising the corresponding quaternary ammonium bicarbonate ##STR2## wherein R.sup.1 is the same or a different C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group and R.sup.2 is the same or a different C.sub.8 -C.sub.20 alkyl group and/or the corresponding quaternary ammonium metal carbonate ##STR3## wherein R.sup.1 is the same or a different C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group; R.sup.2 is the same or a different C.sub.8 -C.sub.20 alkyl group and M is a non-coupler metal, are prepared by reacting two reactants, a C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl, C.sub.8 -C.sub.20 alkyl quaternary ammonium chloride and a metal hydroxide, in a solvent comprising a C.sub.1 -C.sub.4 normal alcohol.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: June 4, 1996
    Assignee: Lonza, Inc.
    Inventor: Leigh E. Walker
  • Patent number: 5480679
    Abstract: Methods for preventing non-fungal discoloration of logs, wood and wood products that are free of non-fungal discolorations are provided. The wood is treated with a phytotoxic agent in order to prevent enzyme-mediated discoloration of the wood. The wood subsequently may be monitored to determine viability of parenchyma cells. This invention also relates to unmilled wood that is substantially free of non-fungal discolorations and has nonviable parenchyma cells.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: January 2, 1996
    Assignee: Regents of the University of Minnesota
    Inventors: Elmer L. Schmidt, Terry L. Amburgey
  • Patent number: 5472767
    Abstract: In the natural wood panel according to the invention, the fibers (10) are inclined to the panel plane (2) at an angle (.alpha.) between 0.degree. and 90.degree., especially between 20.degree. and 70.degree.. The panel has at least one layer of such natural wood panels (2) joined with one another, in which the fibers (10) of the panels (2) point in the same direction or, in another embodiment, in different directions. At least one other layer can be provided which is joined with the layer of natural wood panels (2), and this layer can also be a natural wood laminated panel or a layer of wood, wood fiber substances, sound-absorbing, heat-insulating, radiation-repelling or heat-conducting material.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: December 5, 1995
    Inventor: Josef Neubauer
  • Patent number: 5464851
    Abstract: A composition which contains a 2-halo-2-halomethyl glutaronitrile and a 4,5-polymethylene-4-isothiazolin-3-one. The compositions exhibit anti-microbial activity and certain combinations of isothiazolinones together with the glutaronitrile are surprisingly effective against both bacteria and fungi.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: November 7, 1995
    Assignee: Zeneca Limited
    Inventor: Fraser F. Morpeth
  • Patent number: 5461108
    Abstract: Wood and other cellulose-based products are preserved with a water-based treating solution containing a phenolic resin prepolymer such as phenol formaldehyde resin prepolymer, a resorcinol formaldehyde resin prepolymer and water. The treatment is carried out by exposing the wood or other cellulose-based product, while submerged in the treating solution, to one or more cycles of reduced pressure (i.e. vacuum) and elevated pressure.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: October 24, 1995
    Assignee: Polymer Wood Processors, Inc.
    Inventor: Jean Lewis, deceased
  • Patent number: 5460751
    Abstract: Aqueous wood treating compositions, containing compounds which contain elements selected from copper, chromium and arsenic and oxyalkylene polymer additives, provide improved stability to CCA solutions containing additives. In addition, the compositions of the present invention have been found to retard hardening effects associated with wood treated with commercial CCA solutions.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: October 24, 1995
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Frank M. S. Ma, Marcel Ayotte
  • Patent number: 5453327
    Abstract: There is disclosed a method for the ammonia saturation of wood to impart flexibility thereto which includes the step of sealing the surfaces of ammonia-saturated wood with a polymeric film which has limited or no permeability to either or both ammonia and water vapor. Preferably, the polymeric film is flexible so the working of the wood product by bending, twisting, embossing, molding, etc. will not destroy the film. The polymeric film should also be soluble in a selected solvent, thereby permitting its removal after the wood has been formed in a final, desired shape to permit water vapor to re-establish crosslinking of the cellulose chains and restore its natural, rigid condition.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: September 26, 1995
    Inventor: Robert E. Strauss
  • Patent number: 5443891
    Abstract: A low amplitude wave-board panel having improved bending strength and bending stiffness properties is provided. More specifically, the amplitude of the waves is substantially equal to, or less than half the thickness of said board. Preferably, the wave amplitude ranges from between 1/8" to about 1".
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: August 22, 1995
    Assignee: Alberta Research Council
    Inventor: Lars Bach
  • Patent number: 5438034
    Abstract: Quaternary ammonium carbonates having the formula ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group and R.sup.2 is a C.sub.8 -C.sub.20 alkyl group have been synthesized.These compounds and compositions further comprising the corresponding quaternary ammonium bicarbonate ##STR2## wherein R.sup.1 is the same or a different C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group and R.sup.2 is the same or a different C.sub.8 -C.sub.20 alkyl group and/or the corresponding quaternary ammonium metal carbonate ##STR3## wherein R.sup.1 is the same or a different C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group; R.sup.2 is the same or a different C.sub.8 -C.sub.20 alkyl group and M is a non-coupler metal, are prepared by reacting two reactants, a C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl, C.sub.8 -C.sub.20 alkyl quaternary ammonium chloride and a metal hydroxide, in a solvent comprising a C.sub.1 -C.sub.4 normal alcohol.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: August 1, 1995
    Assignee: Lonza, Inc.
    Inventor: Leigh E. Walker
  • Patent number: 5415943
    Abstract: Wood composite materials containing veneer layers interposed with a thermoplastic adhesive containing a polyester such as polyethylene terephthalate and other thermoplastic polymer show increased impact resistance. The composite material may be manufactured using an adhesive transfer method or film extrusion.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: May 16, 1995
    Assignee: American Research Corporation of Virginia
    Inventors: Howard P. Groger, Frederick A. Kamke, Russell J. Churchill
  • Patent number: 5374378
    Abstract: There are described liquid microbicidal agents containing compounds from the series comprising o-phenylphenol, p-chloro-m-cresol, p-chloro-m-xylenol and pentachlorophenol and not more than 50 percent by weight of an organic solvent or solvent mixture, and their preparation and use.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: December 20, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jens-Peter Lorentzen, Walter Radt, deceased, Horst-Dieter Lehmann
  • Patent number: 5362520
    Abstract: A new and improved bleaching and finishing composition for bleaching and finishing a solid substrate includes a first component blend which includes a quantity of a latex resin and a quantity of a bleaching solution. A second component blend includes a quantity of a latex resin, a quantity of an alcohol, a quantity of water, a quantity of a substrate treating material, and a quantity of an alkalizing agent. The first component blend and the second component blend are maintained separated from each other in storage, and the first component blend and the second component blend may be mixed together prior to use on the substrate. Preferably, the substrate is wood. The second component blend may also include a quantity of a coloring agent for tinting the substrate to a desired shade of color. Also, a method is provided for bleaching and finishing a solid substrate.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: November 8, 1994
    Inventor: Ricardo M. Rodriguez
  • Patent number: 5290621
    Abstract: A flat-peaked and flat-troughed corrugated wafer board panel is provided. The panel is characterized in having a substantially uniform density.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: March 1, 1994
    Assignee: Her Majesty the Queen in right of Canada as represented by the Minister of Forestry
    Inventors: Lars Bach, Eduard Stark
  • Patent number: 5275862
    Abstract: The disclosure concerns a hard multi-ply laminate, at least two of the plies comprising primarily wood fibers compressed with a plastic, and an intermediate ply of a different chemical composition than the wood fiber plies, and top and bottom plies of substantially the same physical performances to avoid warping. An adhesive is applied between each of the plies and all the plies are compressed to form a hard laminate. An edge of the resulting board is shaped to form an artistic configuration, and the edges are coated with a moisture barrier. Thus the resulting hard laminate boards with a sculpted edge can be used directly for table and desk tops, shelving and the like without the addition of an edging strip.
    Type: Grant
    Filed: April 15, 1992
    Date of Patent: January 4, 1994
    Assignee: Axis, Inc.
    Inventors: Farouk M. Ramadan, Francois H. Cauvin
  • Patent number: 5270083
    Abstract: The invention relates to wood preservation systems which employ impregnating agents comprising halogenated tannin extracts from plant species which are relatively more resistant to fungi, weathering, rotting, insect attack, etc. Materials contained within the tannin extracts are converted to halogenated substances which are absorbed by the wood species to be treated. The halogenated extract materials can be used with or without other treatment agents (e.g., fixatives or metal salts). Bromine is the preferred halogen material, with optimum treatment occurring when the bromine concentration in the extract exceeds about 2% (most preferably, about 4-5%).
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: December 14, 1993
    Assignee: Cecco Trading, Inc.
    Inventor: W. Robert Lotz
  • Patent number: 5225264
    Abstract: A composite molded article comprising a layer 5 made of a synthetic resin on which is laminated a surface material 1 having a construction such that wood veneers 3 and 4 are laminated on the surfaces of a metal sheet 2. A method for molding a composite molded article comprises the steps of: arranging, in a metal mold 7 for molding, a surface material 1 which has a construction such that wood veneers 3 and 4 are laminated on each surface of a metal sheet 2; and molding a synthetic resin 5 on a backside of the surface material 1 to integrate the surface material 1 with the synthetic resin 5.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: July 6, 1993
    Assignee: Yamaha Corporation
    Inventors: Nobuji Kato, Hisayoshi Ohsumi
  • Patent number: 5221359
    Abstract: Method and compositions for restoring the original color and texture to degraded wood surfaces comprising an aqueous solution of an alkali metal acid pyrophosphate and a surfactant. An organic acid having a relatively low coefficient of toxicity can be optionally incorporated into the wood treating compositions to enhance the cleaning capacity of the solution. The nonabrasive compositions are capable of removing embedded soil and stains from wood surfaces without altering the mechanical properties of the wood structure.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: June 22, 1993
    Inventor: Peter Kaupert
  • Patent number: 5194321
    Abstract: The invention relates to a reinforced veneer laminate comprising at least one layer of veneer and at least one layer of polyethylene filaments enveloped by resin and possessing a tensile strength of at least 1.2 GPa and a modulus of at least 30 GPA.The reinforced veneer laminate bends very well and has a good resistance against static mechanical loads and mechanical impact loads.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: March 16, 1993
    Assignee: Stamicarbon B.V.
    Inventors: Eduard A. Blanker, Jacob Van der Stad
  • Patent number: 5185214
    Abstract: A one step process for imparting both decay resistance and fire retardancy to wood and cellulosic materials by impregnating the products with a treatment solution composed of a water soluble mixture of a tertiary and quaternary ammonium preservative compound and an organic phosphate fire retardant compound.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: February 9, 1993
    Inventors: Susan L. LeVan, Rodney C. DeGroot
  • Patent number: 5077098
    Abstract: A process for protecting wood by applying to the wood an aqueous solution of a composition comprising sodium borate and sodium carbonate. Adverse effects on the color of the wood are reduced by including in the composition a component selected from a weakly acidic compound able to form a complex with cellulose; the weakly acidic compound and titanium dioxide; an alkyl ammonium chloride; the weakly acidic compound and an alkyl ammonium chloride; and an alkaline earth metal hydroxide.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: December 31, 1991
    Assignee: Canadian Forest Products Ltd.
    Inventor: Suezone Chow
  • Patent number: 5063092
    Abstract: Protecting marble, stone, tiles, cement, and similar materials utilized in the building industry from the action of atmospheric agents and pollutants, which comprises applying a perfluoropolyether having perfluoroalkyl end groups onto the surface of the article, said perfluoropolyether being in the form of an aqueous microemulsion.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: November 5, 1991
    Assignee: Ausimont S.r.L.
    Inventors: Daria Lenti, Mario Visca
  • Patent number: 5047280
    Abstract: A `high density` corrugated wafer board panel is provided. The wafer board panel has a substantially uniform density ranging from between about 700 kg/m.sup.3 to 900 kg/m.sup.3. As a result of increasing the density of the panel without changing the panel weight per projected unit area, a panel having improved overall flexure performance properties is provided.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: September 10, 1991
    Assignee: Alberta Research Council
    Inventor: Lars Bach
  • Patent number: 5045366
    Abstract: An effective, environmentally compatible anti-fungal composition for protecting lumber from infestation by wood-staining and wood-rotting fungi comprises, as an active ingredient, an alkyl sulfosuccinate compound. A preferred alkyl sulfosuccinate is dioctyl sodium sulfosuccinate. The anti-fungal composition may further comprise water and an adjuvant such as sodium benzoate or a lower alcohol or diol (e.g., ethanol, isopropanol, ethylene glycol or propylene glycol). The composition may also comprise an oil component such as a paraffinic mineral oil, a triglyceride or a terpenoid based oil. The concentration of active ingredient present in the composition ranges between 0.5 and 10.0% by weight.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: September 3, 1991
    Assignee: Safer, Inc.
    Inventor: Frederick S. Sedun
  • Patent number: 5035956
    Abstract: An effective, environmentally compatible anti-fungal composition for protecting lumber from infestation by wood-staining and wood-rotting fungi comprises, as an active ingredient, an alkyl sulfosuccinate compound. A preferred alkyl sulfosuccinate is dioctyl sodium sulfosuccinate. The anti-fungal composition may further comprise water and an adjuvant such as sodium benzoate or a lower alcohol or diol (e.g., ethanol, isopropanol, ethylene glycol or propylene glycol). The composition may also comprise an oil component such as a paraffinic mineral oil, a triglyceride or a terpenoid based oil. The concentration of active ingredient present in the composition ranges between 0.5 and 10.0% by weight.
    Type: Grant
    Filed: August 9, 1989
    Date of Patent: July 30, 1991
    Assignee: Safer, Inc.
    Inventor: Frederick S. Sedun
  • Patent number: 5030483
    Abstract: A process for the accelerated fixing of fixable chromate-containing wood preservatives in which wood freshly impregnated by any of the full-cell, modified full-cell, empty-cell, or modified empty-cell treating processes are subjected to fixing by contacting the wood with hot liquid medium, such as water, which liquid is either initially hot or is rapidly heated to sufficient temperature so that the entire bundle of wood is brought to a temperature sufficient for fixation to occur within a short economic period of time within the liquid medium. The process also produces a low-weight preservative impregnated wood product.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: July 9, 1991
    Assignee: Drinkard Developments, a Delaware Partnership
    Inventor: William F. Drinkard, Jr.
  • Patent number: 5009937
    Abstract: A composition for controlling sapstain and mold on wood having 20% more of moisture comprises an aqueous solution containing at least 0.05% by weight of chlorothalonil and borax in a quantity between 3 and 9 times greater than the weight of the chlorothalonil. The composition is applied to wood by dipping or spraying.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: April 23, 1991
    Assignee: Chapman Chemical Company
    Inventors: Michael H. West, Gregg Overman
  • Patent number: 4988545
    Abstract: Complexes of sulfited tannin extract and a copper(II) ion effectively protect wood against fungal attack. The complex can be impregnated into wood in a single step treatment using a water/organic solvent system, or formed in situ by treating the wood with an aqueous solution containing the extract and subsequently treating the wood with an aqueous solution containing a copper (II) salt.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: January 29, 1991
    Assignee: Board of Control of Michigan Technological University
    Inventor: Peter E. Laks
  • Patent number: 4988576
    Abstract: A wood preservative composition comprising a lignosulfonate copolymer and a metal salt or a combination of metal salts. The copolymer is a reaction product of lignosulfonate and acrylic monomers selected from a group of acrylic compounds of the general formula, RCH=CR.sup.1 COOH, where R is hydrogen, an alkyl or carboxyl group and R.sup.1 is hydrogen or an alkyl group, and the metal salt is a salt of sulfate, chloride, phosphate, or carbonate wherein the metal is selected from the group consisting of copper, zinc, mercury and lead. Alternatively, the composition may be a metal salt or a combination of metal salts of a lignosulfonate copolymer produced by base exchange of the corresponding calcium lignosulfonate copolymer with a metal salt or metal salts. The composition may be used, optionally, together with methylol phenol.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: January 29, 1991
    Assignee: Daishowa Chemicals Inc.
    Inventors: Stephen Y. Lin, Lori L. Bushar
  • Patent number: 4987022
    Abstract: Non-inflammable light-weighing tough boards to be used for structural and decorative material in housing and building, such as, decorative ceiling boards, sliding door overlays, partitions and so on, prepared by corrugating cardboard made of phosphated wood pulp and inorganic fiber and processing the so obtained corrugated board by impregnating with a toughening solution of inorganic toughening agent and then drying it.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: January 22, 1991
    Assignees: Keisuke Ueno, United Board Co., Ltd., K. S. Consult Service Co., Inc.
    Inventor: Keisuke Ueno
  • Patent number: 4985282
    Abstract: The surfaces of stony materials, tiles, cement conglomerates and relevant manufactured articles are protected from atmospheric agents and pollutants by surface application of a protective material consisting of a mixture comprising a vinylidene fluoride polymer or copolymer containing 55-100 mol % of vinylidene fluoride, 0-45 mole % of hexafluoropropene and 0-30 mol % of tetrafluoroethylene and an aqueous microemulsion or emulsion of perfluoropolyethers. Such mixtures are applied by conventional methods onto the surface to be protected.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: January 15, 1991
    Assignee: Ausimont S.r.l.
    Inventors: Giovanni Moggi, Desiderata Ingoglia, Daria Lenti
  • Patent number: 4973501
    Abstract: Described is a wood composition and a method for its preparation by treating wood with a first aqueous solution comprising one or more lanthanide derivatives, optionally rinsing with water and finally treating the wood with a second aqueous solution comprising one or more bases or one or more acid salts thereby precipitating a water-insoluble lanthanide complex within the wood. In addition, the method may be practiced by reversing the order of the treatment steps.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: November 27, 1990
    Assignee: Rhone-Poulenc Inc.
    Inventor: Peter S. Gradeff
  • Patent number: 4927672
    Abstract: A process for the accelerated fixing of fixable chromate-containing wood preservatives in which wood freshly impregnated by any of the full-cell, modified full-cell, empty-cell, or modified empty-cell treating processes are subjected to fixing by contacting the wood with hot liquid medium, such as water, which liquid is either initially hot or is rapidly heated to sufficient temperature so that the entire bundle of wood is brought to a temperature sufficient for complete fixation to occur within an economic period of time either within or after removal from the liquid medium.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: May 22, 1990
    Assignee: Drinkard Developments
    Inventor: William F. Drinkard, Jr.
  • Patent number: 4923760
    Abstract: Waterborne penetrating coating compositions and a method for applying the coating compositions to wood surfaces are disclosed. The coating compositions include a resin component comprising a first maleinized linseed oil having a low molecular weight in the range of about 1,000 to 3,000, a second maleinized linseed oil having a medium molecular weight in the range of about 4,000 to 8,000 and a medium-long oil length water-reducible alkyd resin, and a solvent component comprising water and propylene glycol tertiary butyl ether (PTB) as a coupling solvent. The coating compositions also preferably include an alkaline solubilizer for neutralizing the resin component and an aliphatic hydrocarbon for controlling evaporation of the solvent component after the coating component is applied to the wood surface.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: May 8, 1990
    Assignee: The Olympic Homecare Products Company
    Inventors: Adrian S. Adkins, Diane J. Englund
  • Patent number: 4911988
    Abstract: A preservative element, for timber or masonry in the form of a shaped element containing an organic boron compound, especially a boro-organic ester. Preferably the element also contains inorganic boron salts or acids, with or without the addition of other inorganic compounds having fungicidal and/or insecticidal properties.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: March 27, 1990
    Assignee: Manchem Limited
    Inventors: Raymond C. Cass, William K. H. Lakin