Next To Natural Rubber Patents (Class 428/423.9)
  • Patent number: 6465539
    Abstract: The invention relates to an elastic coating system with which dry surfaces can be formed by UV curing of constituents containing (meth)acryloyl groups and by subsequent crosslinking of constituents containing NCO groups with constituents containing active hydrogen. The invention also relates to their use of this coating, system for coating, inter alia, components of plastic.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: October 15, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jan Weikard, Wolfgang Fischer, Claus Kobusch, Wolfram Küttner
  • Publication number: 20020142166
    Abstract: A polyamide-vibration insulating rubber composite body which can be produced in a simple manner by combining a polyamide part with a vibration insulating rubber part without the use of an adhesive.
    Type: Application
    Filed: January 25, 2002
    Publication date: October 3, 2002
    Applicant: TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Junichiro Suzuki, Kazutaka Katayama, Hidehito Ikeda, Ayumu Ikemoto
  • Publication number: 20020127411
    Abstract: A composite material for a metal gasket is disclosed, including: a metal plate; a rubber layer fixed on the surface of the metal plate; and a solid lubricant layer fixed on the rubber layer. The solid lubricant layer contains polytetrafluoroethylene and a resin as main components, and has a friction coefficient equal to 0.15 or lower.
    Type: Application
    Filed: October 23, 2001
    Publication date: September 12, 2002
    Inventors: Yasunori Murakami, Hitomi Tsuchiya, Naomichi Mitsuyama
  • Patent number: 6426034
    Abstract: A liquid, radiation-curable coating suitable for coating thermoplastic substrates is described. The coating composition can be formulated to achieve very low gloss at both high and low angles of incidence, and is suitable for application to moldable thermoplastic sheet, and in particular is suitable for application to thermoplastic olefin moldable sheet. Such coatings are useful in protecting thermoplastic substrates and achieving a low-gloss surface in a wide variety of applications including automotive interior parts, furniture, and artificial leather articles.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: July 30, 2002
    Assignee: Lilly Industries, Inc.
    Inventors: Jerry McComas, Peter Clark
  • Publication number: 20020091222
    Abstract: The present invention relates to an adhesive usable at ambient temperature to bond together two cross-linked rubber compositions, to a process for preparing the adhesive, to a tread of a tire cover and to such a cover comprising this adhesive, and to an article comprising two parts bonded together by means of this adhesive. An adhesive based on a copolymer comprising urea or urethane and isocyanurate groups wherein the copolymer is a reaction product of: (a) a polyisocyanate comprising isocyanurate groups, the polyisocyanate having a functionality equal to or greater than three, (b) a functional polymer comprising an amine or alcohol group at each of its chain ends, the functional polymer being selected from the group consisting of polyether diamines, polyether diols, polyester diols and (ester-ether) diol copolymers, and (c) at least one trimerization catalyst capable of forming isocyanurate groups from isocyanate groups, wherein the molar ratio of isocyate groups to amine is between 1.5 and 2.
    Type: Application
    Filed: August 1, 2001
    Publication date: July 11, 2002
    Inventors: Nathalie Viegas, Roger Isnard
  • Patent number: 6378137
    Abstract: A powder free medical glove having an outer side a silicon treated surface and the inside of cross linked coagulated glove bonded with a layer formed of an anti-blocking composition. The anti-blocking composition comprises of a polymer or copolymer mixed together with a micronized high density polyethylene material and wax in suitable blends that result in the composition having anti-blocking and improved lubricity properties. The medical glove with the skin contacting anti-blocking coating enables donning of the glove to be effected without the aid of donning powder such as starch powder. When the finished glove is washed and rinsed with water to remove the coagulant powder, and the said glove treated with a silicon solution, a glove substantially free of loose powder glove is produced and has good lubricity for donning.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: April 30, 2002
    Assignee: Ansell Shah Alam Sdn Bhd
    Inventors: Noorman Abu Hassan, Chak Choy Yuen
  • Patent number: 6365278
    Abstract: Multilayer elastomer films (multilayer material) comprising at least one continuous layer, carrying an active chemical substance (such as corrosion inhibitors, lubricants or alternatively biocides for medical use), inserted between inert elastomer barrier layers, processes for the preparation and various applications of these films. The multilayer polymeric material comprises at least one layer A composed of a gel which is reversible or non-reversible, as a function of the temperature, and which carries at least one active chemical substance x, and at least two barrier layers E comprising a synthetic elastomer e, the said layers being held together by a polymeric bonding agent y incorporated in at least one of the said layers A or E and/or by an independent bonding layer Z comprising a polymer z and/or by a chemical or physical treatment of at least one of the said layers A or E.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: April 2, 2002
    Assignee: Hutchinson
    Inventors: Pierre Hoerner, Gérard Riess, René Guy Busnel, André Cheymol
  • Patent number: 6358580
    Abstract: The invention relates to an optionally foamed sealing composition for preformed seals which can swell when treated with water. The invention also relates to a method for the production thereof out of natural rubber and/or elastomers with a matrix comprised of natural rubber/elastomer components and particle-shaped water absorbing material stored therein. The water absorbing material is a combination of (A) polysaccharide(s) selected from cellulose, starch, starch derivatives removed from grafted starch, amylose, amylopectin, dextran, pectin, inulin, chitin, xanthan, alginic acid, alginates, carrageenan, pustulan, callose, laminarin, guluronic acid, pullulan, lichenin or mixtures of the same with (B) a highly water absorbent synthetic polymer selected from polymers based on (meth)acrylate, poly(meth)acrylic acid and the salts thereof, polyacrylamide, polyalcohols or copolymers of said synthetic polymers.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: March 19, 2002
    Assignees: Datwyker A.G. Gummi & Kunststoffe
    Inventors: Thomas Mang, Günter Preiser, Jürgen Dahm
  • Patent number: 6342280
    Abstract: The present invention relates to a method for improving both adhesion between substrate and polymer layers and the durability of such composite structures; while maintaining the malleability and preferred characteristics of the original substrate. Quite unexpectedly, the application of a layer or film upon an uncured, encapsulated base substrate which has been encapsulated by the shear thinning methods of the present invention, results in superior adhesion of multiple layers when compared to conventional layering, coating or composite manufacturing methods. Moreover, the uncured or at most, semi-cured, polymer composition applied to the base substrate ensures that the substrate maintains maximum flexibility for subsequent shaping into composite articles prior to curing. The methods described herein produce multiple layer composite articles that are lighter, stronger, more flexible and utilize less material, than composite articles produced by conventional techniques.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: January 29, 2002
    Assignee: Nextec Applications, Inc.
    Inventors: Rodney Lane Patrick, James Michael Caldwell, Peter Uwe Mekailian
  • Publication number: 20010055687
    Abstract: An object of the invention is to provide a charge-imparting member which can be produced at low cost and maintains superior characteristics for a long period of time. The invention provides a charge-imparting member including an elastic layer formed of an epichlorohydrin rubber material and a surface-treated layer formed by use of a surface treatment liquid containing at least one polymer selected from among an acrylic fluoropolymer and an acrylic silicone polymer; a conductivity-imparting agent; and an isocyanate component.
    Type: Application
    Filed: May 16, 2001
    Publication date: December 27, 2001
    Applicant: HOKUSHIN CORPORATION
    Inventor: Junya Hoshi
  • Patent number: 6312792
    Abstract: An electrically conductive member comprising an electrically conductive elastic layer and a coating layer formed thereon, characterized in that said coating layer is formed from a polyurea resin as a cured product resulting from reaction between a polyamine compound and a polyisocyanate compound. It has a coating layer which readily conforms to elastic deformation of rubber or the likes, has long durability, and has good properties in protection of the photosensitive body from staining and prevention of toner sticking, control of the toner charging and a low coefficient of friction.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: November 6, 2001
    Assignee: Bridgestone Corporation
    Inventors: Tokuo Okada, Koji Takagi, Hiroshi Kaneda, Toshiaki Arai, Takahiro Kawagoe
  • Patent number: 6270902
    Abstract: A two step method or process for improving the adherence or bonding of a lubricious coating of a crosslinked polyurethane, polyurea or polyurethaneurea/PEO or PVP coating to a substrate surface, said two step method comprising a first step of subjecting said surface to a surface preparation which results in the treated surface being provided with a functional tie layer containing functional groups for reaction with functional groups of a reaction mixture to be applied in a subsequent second step, which upon curing forms a crosslinked polyurethane, polyurea or polyurethaneurea/PEO or PVP coating and a second step of applying to said tie layer said reaction mixture and curing the reaction mixture. A medical device resulting from the above-described two step method.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: August 7, 2001
    Assignee: C. R. Bard, Inc.
    Inventors: Eugene Tedeschi, Richard Elton, John Hudson
  • Patent number: 6261695
    Abstract: A coating composition comprising a fluorine-containing compound of the following formula 1, a polyisocyanate, water and an organic solvent: Rf—Q—A  1 wherein R is a monovalent fluorine-containing organic group having from 2 to 20 carbon atoms, Q is a single bond or a bivalent linking group, and A is a group having a hydrogen atom reactive with an isocyanate group.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: July 17, 2001
    Assignee: Asahi Glass Company Ltd.
    Inventor: Kazusuke Kirimoto
  • Patent number: 6193619
    Abstract: This invention relates to methods of using cationic ionomers in the composition of inner layers of golf balls. Further, this invention relates to golf balls comprising one or more inner layers and which incorporate polyurethane or polyurea ionomers. The golf ball with inner layers comprising cationic ionomers has improved ball feel and initial velocity through the addition of an alkylating agent such as t-butyl chloride to introduce ionic interactions in the polyurethane or polyurea and thereby produce cationic type ionomers.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: February 27, 2001
    Assignee: Acushnet Company
    Inventors: Shenshen Wu, Murali Rajagopalan