Natural Rubber Compositions Having Nonreactive Materials (dnrm) Other Than: Carbon, Silicon Dioxide, Glass Titanium Dioxide, Water, Hydrocarbon, Halohydrocarbon Patents (Class 524/925)
  • 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