Natural Rubber Compositions Having Nonreactive Materials (dnrm) Other Than: Carbon, Silicon Dioxide, Glass Titanium Dioxide, Water, Hydrocarbon, Halohydrocarbon Patents (Class 524/925)
  • Patent number: 8815965
    Abstract: Processes for recovering natural rubber from an aqueous natural rubber latex that contains extractables and one or more additives and that is essentially free of lignocellulosic plant material are described. Natural rubber in the latex is separated from the water. Preferably, the amount of non-rubber extractables in the natural rubber is reduced by one or more extraction steps yielding a dried natural rubber.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: August 26, 2014
    Assignee: Bridgestone Corporation
    Inventors: William M Cole, Georg G. A. Bohm, Walter Tomaszewski, Yingyi Huang
  • Patent number: 8722781
    Abstract: A rubber composition for a tire containing 100 parts by weight of a rubber, 1 to 30 parts by weight of a polyether (E1) having the formula (I): R1—{(OCH2CH2CH2CH2)m(OA)n—OH}q??(I) wherein R1 is a residue of a C1 to C24 compound having 1-6 hydroxyl groups, from which at least one hydroxyl group is removed, A Ls a C2 to C24 alkylene group other than a 1,4-butylene group, q is an integer of 1 to 6, and m and n are independently integers of 1 to 600, and/or the derivative thereof (E2) and 10 to 180 parts by weight of a filler, which is excellent in processability, silica dispersability abrasion resistance and wet braking performance, etc.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: May 13, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yoshihiro Kameda, Yasuhiro Yamada, Satoru Yamakawa, Tsuyoshi Okamoto
  • Patent number: 8490979
    Abstract: A sealing element includes an elastomeric matrix; a plurality of incorporants embedded in the matrix.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: July 23, 2013
    Assignee: Baker Hughes Incorporated
    Inventor: Michael H. Johnson
  • Patent number: 8324312
    Abstract: A rubber latex composition is disclosed having reduced allergenicity. Methods for producing a rubber latex composition having reduced allergenicity are also disclosed.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: December 4, 2012
    Assignee: Vystar Corporation
    Inventors: William R. Doyle, Matthew P. Clark, Travis W. Honeycutt
  • Patent number: 8048951
    Abstract: A rubber latex composition is disclosed having reduced allergenicity. Methods for producing a rubber latex composition having reduced allergenicity are also disclosed.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: November 1, 2011
    Assignee: Vystar Corporation
    Inventors: William Doyle, Matthew Clark, Travis Honeycutt
  • Patent number: 7732523
    Abstract: An elastomer composition is provided which contains a matrix of poly-(3-hydroxybutyrate-co-3-hydroxyhexanoate) produced from microorganisms and crosslinked natural rubber particles dispersed like islands in the matrix. An eraser using the elastomer composition is also provided. The present invention is capable of providing an elastomer composition and eraser using the same, which can be recycled, are friendly to the environment, and corresponds to the recycling society, without relying on fossil resources.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: June 8, 2010
    Assignee: Seed Company Ltd.
    Inventors: Kazuki Morimoto, Yasuhiro Nishioka
  • Patent number: 7732524
    Abstract: An elastomer composition is provided which contains a matrix of biomass plastic and crosslinked natural rubber particles dispersed like islands in the matrix. An eraser using the elastomer composition is also provided. The present invention is capable of providing an elastomer composition and eraser using the same, which can be recycled, are friendly to the environment, and corresponds to the recycling society, without relying on fossil resources.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: June 8, 2010
    Assignee: Seed Company Ltd.
    Inventors: Kazuki Morimoto, Yasuhiro Nishioka
  • Patent number: 6906126
    Abstract: A method for reducing allergenicity of natural latex rubber. The natural latex rubber, prior to its vulcanization, is admixed with mineral oil and extracted to reduce protein levels therein. Ideally, the mineral oil is characterized as having a density of approximately 0.818 to 0.880 and a viscosity of approximately 33.5 cf at 40° C.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: June 14, 2005
    Inventors: Travis Honeycutt, Matthew P. Clark
  • Patent number: 6790933
    Abstract: The present invention is directed to a process for producing a powder free natural latex article and the articles produced by the process. In one embodiment, the process of the present invention may be used to form a powder free natural latex glove which has very low levels of extractable protein without being subjected to a halogenation processes. The process includes forming a natural rubber article on a former and then, either before or after stripping the article from the former, contacting the article with a rinse solution comprising the ionic species of a disassociated metal salt. In one embodiment, the metal salt may be sodium chloride. Contact with the rinse solution may lower protein levels in the latex. When the article is stripped from the former prior to contact with the rinse solution, the rinse solution may also remove any residual powders from the glove in order to produce a powder free natural rubber article.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: September 14, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Loi Vinh Huynh, Mayuree Wattanayonkit, Budsarin Rattana
  • Patent number: 6518355
    Abstract: A rubber-based pressure-sensitive adhesive which (i) contains as the main rubber component a natural rubber comprising, as the main component, fine particles having a particle diameter of 1 &mgr;m or smaller contained in a raw natural rubber latex, (ii) contains as the main rubber component a linear natural rubber polymer contained in a raw natural rubber latex, (iii) contains as the main rubber component a natural rubber having a weight-average molecular weight of from 100,000 to 1,000,000 contained in a raw natural rubber latex, (iv) contains as the main rubber component a natural rubber having a rupture strength of 0.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: February 11, 2003
    Assignee: Nitto Denko Corporation
    Inventors: Kazuhiko Shibata, Yasuyuki Tanaka
  • Patent number: 6512034
    Abstract: Disclosed is a cationic graft-modified natural rubber latex, which is obtained by cationically modifying the graft-natural natural rubber latex with a cationic surfactant in the presence of a nonionic surfactant such as polyoxyalkylene alkyl phenyl ether, polyoxyalkylene monostyryl phenyl ether, polyoxyalkylene distyryl phenyl ether or polyoxyalkylene tristyryl phenyl ether, the obtained rubber latex being useful as an adhesive for fibers and papers.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: January 28, 2003
    Assignee: Sumitomo Rubber Industries, Ltd
    Inventors: Akihiko Hamada, Naoya Ichikawa
  • Patent number: 6479582
    Abstract: A rubber composition is obtained which exhibit improved strength, abrasion resistance and antistatic properties, as well as low rolling resistance. The rubber composition is characterized as being rendered conductive by incorporating into rubber a silica filler having a conductive surface layer as composed of carbon or conductive tin oxide.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: November 12, 2002
    Assignee: Otsuka Chemical Co., Ltd.
    Inventors: Yukiya Hareyama, Hidetoshi Ogawa
  • Patent number: 6448318
    Abstract: There is disclosed a method of thermomechanically mixing of a rubber composition containing a fatty acid selected from the group consisting of soya fatty acid, sunflower fatty acid and mixtures thereof.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: September 10, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Paul Harry Sandstrom
  • Patent number: 6338898
    Abstract: A heat-conductive rubber composition material, which comprises a rubber essentially consisting of an acrylic rubber, a butyl rubber, an ethylene propylene rubber or a blended rubber which comprises at least two of acrylic rubber, butyl rubber, and ethylene propylene rubber are blended, and 50 to 85 weight % of hydrophobic magnesium oxide powder, a heat-conductive rubber sheet prepared by forming the above thermal conductive rubber composition material, and a heat-conductive sheet, which comprises a soft metal sheet and a rubber layer formed on at least one surface of the soft metal sheet.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: January 15, 2002
    Assignee: Furakawa Electric Co., Inc.
    Inventors: Toshio Miyahara, Naoki Kimura, Jun Niekawa
  • Patent number: 6306955
    Abstract: A process is disclosed, by which protein can be removed easily and efficiently from natural rubber latex so that deproteinized natural rubber latex can be produced with high productivity and low cost. Particularly, a process for the production of deproteinized natural rubber latex is disclosed, which comprises treating natural rubber latex with a proteolytic enzyme and a surfactant to decompose protein in natural rubber latex, washing the treated natural rubber latex in the presence of a salt. According to the process, deproteinized natural rubber latex useful as a counter-allergy material having stable qualities can be produced easily with high productivity and low cost.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: October 23, 2001
    Assignees: Sumitomo Rubber Industries, Ltd, Kao Corporation
    Inventors: Atsuko Kawasaki, Shinichi Nakade, Toshiaki Sakaki
  • Patent number: 6274655
    Abstract: The present invention relates to rubber compositions containing an elastomer having olefinic unsaturation and a silica-formamide complex.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: August 14, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Lawson Gibson Wideman, Paul Harry Sandstrom, Adel Farhan Halasa
  • Patent number: 6265479
    Abstract: Disclosed are a deproteinizing agent comprising a proteolytic enzyme and one or more cationic surfactants selected from the group consisting of an alkylamine salt, an alkylamine derivative and quaternized compounds thereof; and a method of preparing a cationic deproteinized natural rubber latex, which comprises adding said deproteinizing agent to a field latex or an ammonia-treated latex thereby subjecting the latex to a deproteinization treatment and purifying the rubber particles in the latex.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: July 24, 2001
    Assignees: Sumitomo Rubber Industries, Ltd., Kao Corp.
    Inventors: Naoya Ichikawa, Akihiko Hamada, Masaharu Hayashi
  • Patent number: 6248827
    Abstract: The instant invention relates to poly(maleimide-co-alkenyl benzene) centipede polymer and a method for producing the polymer by reacting a poly(alkenyl benzene-co-maleic anhydride) in the presence of a primary amine in a substantially dry state. The invention is further directed to a process for blending the poly(maleimide-co-alkenyl benzene) centipede polymer with elastomeric polymers, in combination with, or in substitution of, conventional extender oils, to produce extended polymers having improved properties such as tensile strength, maximum elongation, tear strength, damping properties, and the like.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: June 19, 2001
    Assignee: Bridgestone Corporation
    Inventors: Xiaorong Wang, Victor J. Foltz, Hideo Takeichi
  • Patent number: 6211276
    Abstract: A heat-conductive rubber composition material, which comprises a rubber essentially consisting of an acrylic rubber, a butyl rubber, an ethylene propylene rubber or a blended rubber which comprises at least two of acrylic rubber, butyl rubber, and ethylene propylene rubber are blended, and 50 to 85 weight % of hydrophobic magnesium oxide powder, a heat-conductive rubber sheet prepared by forming the above thermal conductive rubber composition material, and a heat-conductive sheet, which comprises a soft metal sheet and a rubber layer formed on at least one surface of the soft metal sheet.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: April 3, 2001
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Toshio Miyahara, Naoki Kimura, Jun Niekawa
  • Patent number: 6127476
    Abstract: An aqueous adhesive composition, as for bonding rubber substrates together or for bonding a rubber substrate to a fabric, comprising a blend of a carboxylated rubber latex as made from styrene, butadiene, and an unsaturated acid monomer, and a natural rubber latex, is sulfur curable and desirably utilizes rubber accelerators. The adhesive composition is substantially free of hydrocarbon solvents and/or tackifiers and has good physical properties such as high peel strength.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: October 3, 2000
    Assignee: OMNOVA Solutions Inc.
    Inventors: Gary L. Jialanella, Raymond J. Weinert, Pamela L. Cadile, Norman K. Porter, Richard Olson
  • Patent number: 6107455
    Abstract: A method for lowering the extractable protein content in a natural rubber latex to below 30 parts per million (ppm) comprises the steps of treating by washing a rubber article, such as a rubber glove, with an aqueous solution containing a soluble silicate and, optionally, a protease. The methods claimed effectively reduce the allergenicity of the articles so treated.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: August 22, 2000
    Assignee: Novo Nordisk A/S
    Inventors: Peter Rosholm, Kai Chuang Heng, S.o slashed.ren H.o slashed.jfeldt Lund
  • Patent number: 6054525
    Abstract: A semi-synthetic rubber latex. The rubber employed in the latex is natural rubber obtained from plant life known to produce polyisoprene. Surprisingly, the semi-synthetic rubber latex is essentially devoid of those proteins that are known to give rise to natural rubber allergenicity or hypersensitivity, and are also essentially devoid of antigens that potentially will give rise to immune responses. Also provided is a method for obtaining the semi-synthetic rubber latex and dipped films thereof that are also substantially free of known natural rubber allergens.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: April 25, 2000
    Assignee: The University of Akron
    Inventors: William W. Schloman, Jr., Donald McIntyre
  • Patent number: 6042643
    Abstract: Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon black in a protic reaction medium. Carbon black products which may be prepared according to process of the invention are described as well as uses of such carbon black products in plastic compositions, rubber compositions, paper compositions, and textile compositions.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: March 28, 2000
    Assignee: Cabot Corporation
    Inventors: James A. Belmont, Robert M. Amici, Collin P. Galloway
  • Patent number: 5910567
    Abstract: A method for producing a formed product of deproteinized natural rubber latex capable of reducing a content of an allergen in a natural rubber latex material to a level sufficient to keep the latex from being harmful to the human body without decreasing yields of the product and deteriorating formability of the latex. In the method, cleaning removal of a non-rubber content is carried out after each of protein decomposition, prevulcanization and forming. An aqueous alkali solution, ammonia, water containing free chlorine in an amount of 0.005 to 0.02% by weight or alcohol-water mixed liquid containing alcohol in an amount of 5 to 80% by weight is used as cleaning liquid for the cleaning removal. The method is suitably applied to production of a natural rubber product such as a rubber glove, a condom, a catheter, a foam rubber material and the like.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: June 8, 1999
    Assignees: Fuji Latex Co., Ltd., Sumitomo Rubber Industries, Ltd., Kao Corporation
    Inventors: Yasuyuki Tanaka, Shinichi Nakade, Atsuko Ochi, Toshiaki Sakaki, Masaharu Hayashi, Kazuhiro Sekiguchi, Akihito Kuga, Eiji Kanamaru
  • Patent number: 5908893
    Abstract: A process is disclosed, by which protein can be removed easily and efficiently from natural rubber latex so that deproteinized natural rubber latex can be produced with high productivity and low cost. Particularly, a process for the production of deproteinized natural rubber latex is disclosed, which comprises treating natural rubber latex with a proteolytic enzyme and a surfactant to decompose protein in natural rubber latex, washing the treated natural rubber latex in the presence of a salt. According to the process, deproteinized natural rubber latex useful as a counter-allergy material having stable qualities can be produced easily with high productivity and low cost.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: June 1, 1999
    Assignees: Sumitomo Rubber Industries, Ltd., Kao Corporation
    Inventors: Atsuko Kawasaki, Shinichi Nakade, Toshiaki Sakaki
  • Patent number: 5777004
    Abstract: Disclosed is a method of treating natural rubber latex with protease and peptidase enzymes whereby protein allergens contained within the latex are degraded so as to be rendered non-allergenic to humans. The protein allergen-free natural rubber latex produced by the method and articles fabricated from the protein allergen-free product are also disclosed.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: July 7, 1998
    Assignee: Allergen Reduction Inc.
    Inventor: Jack C. Trautman
  • Patent number: 5773499
    Abstract: A natural rubber latex has been preserved and stabilized by at least one water-soluble carboxylic acid salt of the formula R--COO.sup.- M.sup.+, in which R is an alkyl or alkenyl radical having a branched carbon chain and M.sup.+ is a monovalent cation. A process for the preparation of the rubber latex mixture uses a water-soluble carboxylic acid salt for the preservation and stabilization of natural latex.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: June 30, 1998
    Assignee: Schill & Seilacher (Gmbh & Co.)
    Inventors: Henning Umland, Clara Petri
  • Patent number: 5604277
    Abstract: A dry liquid concentrate mixture is disclosed comprising crumb rubber particles and tall oil, tall oil derivatives or other fatty acids, which may be enhanced by other components, such as modifiers, for use to enhance the properties of parent materials, such as thermoplastic compounding and coatings and elastomers and recycles and asphalt and epoxies and aliphatic urethane.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: February 18, 1997
    Assignee: Encore Technologies, Inc.
    Inventor: John D. Osborn
  • Patent number: 5599861
    Abstract: This invention relates to moulded, non-dusting, non-caking, free-flowing masticating agents based on 2,2'-dibenzamidodiphenyl disulphide and mixtures of saturated fatty acids having an iodine number <25, a solidification point in the range from 50.degree. to 68.degree. C. and an acid number of 179 to 215. The masticating agents according to the invention are employed for reducing the viscosity of rubbers containing double bonds, and are normally used in amounts of 0.01 to 3 parts by weight, based on 100 parts by weight of rubber.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: February 4, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hartmuth Buding
  • Patent number: 5563241
    Abstract: Natural latex rubber having reduced protein contamination is achieved by a method wherein rubber latex is contacted with an anion exchange resin at a pH greater than the isoelectric point of the proteins. After allowing the protein to complex with the resin, the protein-resin complex is separated from the latex to provide latex rubber having reduced protein contamination. Alternatively, or in addition, cation exchange resin may be contacted with latex rubber to increase the solubility of latex protein in the latex. In another embodiment, ion exchange resin may be added to water, and the water used to wash an article formed of latex, to thereby reduce protein contamination in the article. The methods allow the manufacture of latex-based articles having reduced irritability to skin.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: October 8, 1996
    Assignee: Guthrie Foundation for Education and Research
    Inventor: Donald H. Beezhold
  • Patent number: 5427851
    Abstract: A pressure sensitive adhesive composition is provided for use on cellulosic substrates which will not become tacky under high temperatures, lose adhesive properties due to contact with silicone oils, "block" when stacked prior to printing, or lose bond-forming ability with age. Non-thermoplastic pigment particles and a compound selected from the group consisting of a natural rubber latex, a graft copolymer of natural rubber and acrylic monomer and a blend of the natural rubber latex and the graft copolymer are mixed together to form an adhesive with a glass transition temperature in the range of -10.degree. to -78.degree. C., a dielectric constant of about 2.25 to 2.62 and a green strength of 0.05 to 0.75 p.s.i. The adhesive may also optionally contain a chloroprene-methacrylic acid copolymer latex and a vinyl-methacrylic acid copolymer latex.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: June 27, 1995
    Assignee: The Standard Register Company
    Inventor: Rajendra Mehta
  • Patent number: 5240995
    Abstract: A two phase adhesive matrix for use in an electrically powered iontophoretic delivery device is provided. The adhesive matrix comprises an adhesive hydrophobic polymer phase and about 15 to 60 wt % on a dry weight basis of a hydrophilic polymer phase distributed through the hydrophobic polymer phase. The hydrophilic phase forms upon hydration an interconnecting network of aqueous pathways for passage of the agent through the adhesive. The adhesive can be used to adhere an electrode assembly of an iontophoretic delivery device to a body surface such as skin or a mucosal membrane. Alternatively, the adhesive can be used to adhere together two or more elements of an iontophoretic delivery device.
    Type: Grant
    Filed: August 6, 1991
    Date of Patent: August 31, 1993
    Assignee: Alza Corporation
    Inventors: J. Richard Gyory, Ronald P. Haak, Felix Theeuwes, Patrick J. Lew
  • Patent number: 5234992
    Abstract: An adhesive composition suitable for use as an in-line contact adhesive for electrotransport drug delivery systems.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: August 10, 1993
    Assignee: ALZA Corporation
    Inventors: J. Richard Gyory, Ronald P. Haak, Felix Theeuwes, Patrick J. Lew
  • Patent number: 5124384
    Abstract: In a sealant composition comprising a polymer latex, filler, plasticizer, silane adhesion promoter, and fumed silica, the improvement which comprises as the plasticizer a C.sub.1 -C.sub.8 alkyl aryl phthalate, an N-(C.sub.1 -C.sub.8)alkyl arylsulfonamide, or mixtures thereof.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: June 23, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Joel E. Goldstein
  • Patent number: 5085705
    Abstract: An alumina-silica-sulfate of the formulaxR:Al.sub.2 O.sub.3 :ySiO.sub.2 :zSO.sub.4.pH.sub.2 Owherein R is an alkali or alkaline earth metal oxide, a transition metal capable of forming a sulfate salt or mixtures thereof, x is about 0.001 to 0.5, y is about 0.01 to 3.00, z is about 0.00 to 3.00, and p is about 0 to 100.00, and wherein the sulfate is present as a bound network. Compositions comprising the alumina-silica-sulfate of the invention and a carrier, articles of manufacture comprising the alumina-silica-sulfates of the invention in the form of a catalyst, rubber, plastics, paint and paper, among others. Hollow microspheres are formed by spray drying a gelled composition. Hollow microspheres containing a porous network are formed by calcining the spray-dried hollow microspheres to eliminate the sulfate network.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: February 4, 1992
    Assignee: J. M. Huber Corporation
    Inventor: Michael C. Withiam
  • Patent number: 4931096
    Abstract: A sealer for filling a dental root canal which can seal the apex of the root and the root canal perfectly and can be removed with the gutta percha points when refilling is necessary.The sealer of the invention consists of the same basic material as the gutta percha point, so it adheres to the point initimately and firmly and can seal the apex of the root perfectly. The softening temperature of the sealer is about 40.degree.-45.degree. C., so the points and the sealer can be removed same time by heating at low temperature with a heat carrier when refilling is necessary.
    Type: Grant
    Filed: September 20, 1988
    Date of Patent: June 5, 1990
    Assignee: Toyo Chemical Laboratories, Inc.
    Inventors: Mutsuo Fujisawa, Tsutomu Kameda, Hirofumi Katsura, Reiichi Yamaga, Setsuko Ishido
  • Patent number: 4855346
    Abstract: There are disclosed novel compounds of the formula: ##STR1## wherein n=0 or 1, R.sub.1 is selected from the group consisting of a hydrogen atom, straight chain and branched chain alkyl groups and alkoxy groups, and cycloalkyl groups and cycloalkoxy groups having 5 to 8 carbon atoms, R.sub.2 is selected from the group consisting of lower alkyl groups having 1 to 5 carbon atoms, X is an oxygen atom if n=0 or a nitrogen atom if n=1, Y is selected from the group consisting of a hydrogen atom, straight chain and branched chain alkyl groups having 1 to 18 carbon atoms, cycloalkyl groups having 5 to 8 carbon atoms, alkenyl groups having 3 to 18 carbon atoms, phenyl groups, alkylphenyl groups having 7 to 14 carbon atoms and aralkyl groups having 7 to 15 carbon atoms, and R.sub.3 is selected from the same group as Y, or together with X and Y forms part of a heterocyclic ring composed of 5 or 6 atoms in which X is the hetero-nitrogen atom.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: August 8, 1989
    Assignee: Akzona Incorporated
    Inventors: Paul K. Battey, Peter Hope, Ashutosh H. Sharma
  • Patent number: 4755550
    Abstract: A gelled solid adhesive for coating substrates, typically paper. The adhesive can be made available in stick form and is easily applied in even coats to any surface area of the substrate. The adhesive has sufficient tack enabling the coated substrate to instantly adhere to essentially any free contact surface upon gently pressing the substrate to the free surface. The adhesive coated substrate is easily removable from the contact surface by manually lifting it thereform. The adhesive permits readherence of the adhesive coated substrate to the same or different free contact surfaces. An adhesive coated paper substrate will readhere many times to free paper contact surface. The preferred gelled adhesive product is formed of an aqueous dispersion of components which include a rubber such as natural rubber latex component, a friction reducing agent, a tackifier, an antioxidant, a gelling agent and surfactant.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: July 5, 1988
    Assignee: Dennison Manufacturing Company
    Inventors: Ralph J. Shuman, Barbara Burns
  • Patent number: 4684685
    Abstract: A gelled solid adhesive for coating substrates, typically paper. The adhesive can be made available in stick form and is easily applied in even coats to any surface area of the substrate. The adhesive has sufficient tack enabling the coated substrate to instantly adhere to essentially any free contact surface upon gently pressing the substrate to the free surface. The adhesive coated substrate is easily removable from the contact surface by manually lifting it therefrom. The adhesive permits readherence of the adhesive coated substrate to the same or different free contact surfaces. An adhesive coated paper substrate will readhere many times to free paper contact surface. The preferred gelled adhesive product is formed of an aqueous dispersion of components which include a rubber such as natural rubber latex component, a friction reducing agent, a tackifier, an antioxidant, a gelling agent and surfactant.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: August 4, 1987
    Assignee: Dennison Manufacturing Company
    Inventors: Ralph J. Shuman, Barbara Burns
  • Patent number: 4657960
    Abstract: A gelled solid adhesive for coating substrates, typically paper. The adhesive can be made available in stick form and is easily applied in even coats to any surface area of the substrate. The adhesive has sufficient tack enabling the coated substrate to instantly adhere to essentially any free contact surface upon gently pressing the substrate to the free surface. The adhesive coated substrate is easily removable from the contact surface by manually lifting it therefrom. The adhesive permits readherence of the adhesive coated substrate to the same or different free contact surfaces. An adhesive coated paper substrate will readhere many times to free paper contact surface. The preferred gelled adhesive product is formed of an aqueous dispersion of components which include a natural rubber latex component, a friction reducing agent, a tackifier, an antioxidant and a gelling agent.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: April 14, 1987
    Assignee: Dennison Manufacturing Co.
    Inventors: Ralph J. Shuman, Barbara Burns
  • Patent number: 4654387
    Abstract: Compounds corresponding to the following general formula: ##STR1## wherein R.sup.0 represents H or, together with R.sup.1, represents --CO-- when X represents --CO-- or, together with R.sup.2, represents --CO-- when X represents --CH.sub.2 --CO,a residue of R, R.sup.1 and R.sup.2, H, C.sub.1 -C.sub.4 alkyl, aryl, COOR.sup.5 or, when R.sup.0 represents H and X represents --CO--, ##STR2## and the other residues R, R.sup.1 and R.sup.2 represent H; R.sup.3 represents H or CH.sub.3 ;R.sup.4 represents C.sub.7 -C.sub.20 aralkyl;R.sup.5 represents H, C.sub.1 -C.sub.4 alkyl or C.sub.6 -C.sub.12 aryl;X represents a residue --(CH.sub.2).sub.n CO--, --(CH.sub.2).sub.n SO.sub.2, --CH.sub.2 --, --CH.sub.2 O--CO-- ##STR3## m represents 1 or 2; and n represents 0 or 1;are suitable for use as incorporable antiagers for polymers, particularly nitrile rubber.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: March 31, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Zsolt Szentivanyi, Josef Witte
  • Patent number: 4644026
    Abstract: A gelled solid adhesive for coating substrates, typically paper. The adhesive can be made available in stick form and is easily applied on even coats to any surface area of the substrate. The adhesive has sufficient tack enabling the coated substrate to instantly adhere to essentially any free contact surface upon gently pressing the substrate to the free surface. The adhesive coated substrate is easily removable from the contact surface by manually lifting it therefrom. The adhesive permits readherence of the adhesive coated substrate to the same or different free contact surfaces. An adhesive coated paper substrate will readhere many times to free paper contact surface. The preferred gelled adhesive product is formed of an aqueous dispersion of components which include a natural rubber latex component, a friction reducing agent, a tackifier, an antioxidant, a gelling agent and surfactant.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: February 17, 1987
    Assignee: Dennison Manufacturing Company
    Inventors: Ralph J. Shuman, Barbara Burns
  • Patent number: 4581400
    Abstract: A rubber composition comprising (a) 100 parts by weight of a rubber selected from the group consisting of natural rubber and synthetic diene rubbers and (b) about 1 to about 30 parts by weight of a rosin derivative comprising a blend of (i) about 15 to about 50% by weight of a rosin, (ii) about 10 to about 70% by weight of a polymerized rosin and (iii) not more than about 55% by weight of a rosin pitch, each based on the weight of the rosin derivative.
    Type: Grant
    Filed: March 27, 1985
    Date of Patent: April 8, 1986
    Assignee: Bridgestone Corporation
    Inventor: Hitoshi Kondo
  • Patent number: 4568711
    Abstract: Combinations of para-phenylene diamines and para di(nitroso) arenes act synergistically in guayule rubber-based compositions to protect them against oxidative degradation. A typically useful diamine is N-(1,3-dimethylbutyl)-N'-phenyl-phenyl-p-phenylene diamine and a useful arene is para-di(nitroso)benzene. Vulcanizable compositions, as well as articles made therefrom, are within the scope of the invention.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: February 4, 1986
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Edward L. Kay, Richard Gutierrez, Walter R. Hausch
  • Patent number: 4532285
    Abstract: An organoclay-antiozonant complex suitable for incorporating in rubber formulations as an additive to inhibit and retard ozone attack is formed by complexing a substituted paraphenylenediamine antiozonant with an organoclay having been produced by treating a smectite-containing clay with a quaternary amine. The organoclay-antiozonant complex is preferably incorporated into the rubber formulation by first mixing the prepared organoclay-antiozonant complex with a naphthenic oil and a polar solvent to form a paste which is then added to the rubber formulation.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: July 30, 1985
    Assignee: Georgia Kaolin Company, Inc.
    Inventor: Thomas D. Thompson, III
  • Patent number: 4492781
    Abstract: Method and composition for protecting, maintaining and repairing paved surfaces utilizing a workable fiber-containing asphalt and/or latex emulsion in combination with an active amount of a water-soluble polymer material differing in ionic characteristics from the emulsion or emulsifier component thereof.
    Type: Grant
    Filed: May 19, 1983
    Date of Patent: January 8, 1985
    Inventors: Francis J. Duszak, James P. Modrak, Dick Deaver
  • Patent number: 4455265
    Abstract: The chemical stability of low ammonia natural rubber latices and latex compounds is improved by the addition of from 0.1 to 0.5 parts by weight solids, per 100 parts by weight of natural rubber solids, of a neutralized or partially neutralized anionic phosphate surfactant having a pH in a 20 percent aqueous solution of from 4 to 12. The resultant stabilized natural rubber latices or latex compounds are particularly suitable for use in preparing prevulcanized dipping compounds.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: June 19, 1984
    Assignee: The Firestone Tire & Rubber Company
    Inventor: Janice L. Haldeman