Patents by Inventor Dieter Zerpner

Dieter Zerpner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5717038
    Abstract: A tire tread made for polydiene rubber crosslinked with 1,2-bis(N,N-dibenzylthiocarbamoyldisulfido)ethane and method of producing the same.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: February 10, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Horpel, Karl-Heinz Nordsiek, Dieter Zerpner
  • Patent number: 5442099
    Abstract: Polysulfide compounds and vulcanization compositions containing the polysulfide compounds, for use in vulcanizing rubbers, are disclosed, with the polysulfide compounds being of the formula ##STR1## wherein R.sup.1 -R.sup.4 are each, independently, hydrogen or C.sub.1 -C.sub.4 alkyl and n is 2 to 10wherein the polysulfide compounds can be used alone or in a vulcanization composition containing the polysulfide compound, sulfur, one or more additional accelerators, one or more basic compounds and, optionally, conventional rubber additives, to provide vulcanized products with improved reversion stability and ageing stability.
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: August 15, 1995
    Assignee: Huels Aktiengesellschaft
    Inventors: Juergen Wolpers, Karl-Heinz Nordsiek, Jaroslaw Monkiewicz, Dieter Zerpner
  • Patent number: 5342900
    Abstract: Vulcanization of diene rubbers at a temperature of from to C. in the presence of 1 to 4.5 parts of a crosslinker having the formula ##STR1## wherein n denotes 2 or 6 and Bz denotes benzyl, in the simultaneous presence of a very small amount of sulfur and a small amount of a mercapto or sulfenamide accelerator or mixtures thereof affords elastomers having a previously unachieved outstanding ageing stability and reversion stability, after relatively short vulcanization times using economical amounts of chemicals while avoiding blooming phenomena in the vulcanizate.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: August 30, 1994
    Assignee: Huls Aktiengesellschaft
    Inventors: Jurgen Wolpers, Dieter Zerpner, Karl-Heinz Nordsiek
  • Patent number: 4956498
    Abstract: A coupling agent for vulcanizable mixtures of rubbers and mineral fillers which is the reaction product of a 2(3)-chloroacetoxy-5-(2'-trialkoxysilyethyl)norbornane of the formula: ##STR1## wherein R.sup.1 is methyl and/or ethyl, with a thiosulfonic acid salt of the formula:R.sup.2 --SO.sub.2 SMe (II)wherein R.sup.2 is a (cyclo)aliphatic or aromatic hydrocarbon radical having up to 20 carbon atoms, and Me is sodium or potassium.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: September 11, 1990
    Assignee: Huels Aktiengesellschaft
    Inventors: Dieter Zerpner, Horst G. Haag
  • Patent number: 4950826
    Abstract: Process for adjusting the cis-trans-double bond configuration in polyalkenamers produced by ring-opening polymerization of cis,cis-1,5-cyclooctadiene or 2-norbornene wherein the polymerization is performed in the presence of isoprene and/or a cyclic olefin with a double-bond pair in the 1,3-position.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: August 21, 1990
    Assignee: Huels Aktiengesellschaft
    Inventors: Dieter Zerpner, Roland Streck
  • Patent number: 4681961
    Abstract: Novel adhesion promoters having, on the one hand, groups capable of forming a stable chemical bond with the surface of silicic acids and silicates (siloxane bond) and, on the other hand, groups capable of forming, during vulcanization, a stable chemical bond with an elastomer (sulfur bridges) are provided. They are consequently suitable as adhesion promoters for the production of vulcanizates exhibiting a favorable filler/elastomer bond. They are oligosulfanes of the formula(RO).sub.3 Si--Y--S.sub.x --Y--Si(OR).sub.3wherein R, Y and x are defined herein, or a mixture of an oligosulfane of this formula (main product) and of a structurally related, substantially dimeric condensation product, which is characterized by a siloxane bond (by-product).
    Type: Grant
    Filed: February 10, 1986
    Date of Patent: July 21, 1987
    Assignee: Huels Aktiengesellschaft
    Inventors: Dieter Zerpner, Roland Streck, Horst G. Haag
  • Patent number: 4412038
    Abstract: Silyl-group-containing 1,3-butadiene polymers are stabilized against self crosslinking by addition of epoxides having an epoxy oxygen content of 2-17% by weight.
    Type: Grant
    Filed: August 4, 1982
    Date of Patent: October 25, 1983
    Assignee: Chemische Werke Huels AG
    Inventors: Dieter Zerpner, Roland Streck
  • Patent number: 4183844
    Abstract: Polybutadiene oils of 400-6,000 molecular weight, having double bonds which are 10 to 60% vinyl, 1 to 15% transvinylene and 25 to 85% cis-vinylene, and 3-20% by weight, corresponding to 0.4 to 3% by weight of bound silicon, of which are reactive silyl polymer units of the formula ##STR1## wherein X is a hydrolyzable group and Y and Z are the same as X or are H and/or alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or optionally substituted phenyl; are useful as adhesion promoters for vulcanizable elastomer compositions comprising a mineral filler.
    Type: Grant
    Filed: July 26, 1977
    Date of Patent: January 15, 1980
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Roland Streck, Dieter Zerpner, Horst Haag, Karl-Heinz Nordsiek
  • Patent number: 4086301
    Abstract: Polyolefin rubber compositions which are readily heat-sealable are provided by the addition of 5-100 parts by weight, based on the polyolefin elastomer, of a propylene polymer uniformly admixed therewith prior to vulcanization which is selected from the group consisting of polypropylene and copolymers of propylene with up to 20% by weight of ethylene, butene-1 or hexene-1 which polymer has a heptane-extractable portion of 5-60%, and I-value measured according to DIN 53 728 of 100-600 cm.sup.3 /g. and a yield point measured according to DIN 53 735 of 10-30 N/mm.sup.2.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: April 25, 1978
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Dieter Zerpner, Klaus Zur Nedden, Albert Frese, Hans Datene
  • Patent number: 4048262
    Abstract: The properties of elastomeric vulcanizates are improved by compounding an elastomer prior to vulcanization with a polydodecenamer reinforcing resin derived from cyclododecene and cyclododecadiene and vulcanizing the compounded elastomer.
    Type: Grant
    Filed: December 10, 1975
    Date of Patent: September 13, 1977
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Horst Haag, Karl-Heinz Nordsiek, Roland Streck, Dieter Zerpner