Patents by Inventor Friedrich Thurn

Friedrich Thurn 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: 4076550
    Abstract: Sulfur containing organosilicon compounds having the formula:Z - Alk - S.sub.n - Alk - Zin which Z is: ##STR1## where R.sub.1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R.sub.2 is alkoxy of 1 to 8 carbon atoms, cycloalkoxy of 5 to 8 carbon atoms or alkylmercapto of 1 to 8 carbon atoms, alk of a divalent aliphatic hydrocarbon or unsaturated aliphatic hydrocarbon or a cyclic hydrocarbon containing 1 to 18 carbon atoms and n is a whole number from 2 to 6 are used as reinforcing additives in rubber mixtures containing a silica or silicate filler, and in a given case carbon black; the organosilane is coated on the surface of the silica or silicate filler particles.
    Type: Grant
    Filed: May 26, 1976
    Date of Patent: February 28, 1978
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Friedrich Thurn, Kurt Burmester, Johannes Pochert, Siegfried Wolff
  • Patent number: 3997356
    Abstract: Sulfur containing organosilicon compounds having the formula:Z -- Alk -- S.sub.n --Alk -- Zin which Z is: ##STR1## where R.sub.1 is alkyl of 1 to 4 carbon atoms cyclohexyl or phenyl and R.sub.2 is alkoxy of 1 to 8 carbon atoms, cycloalkoxy of 5 to 8 carbon atoms or alkylmercapto of 1 to 8 carbon atoms, alk of a divalent aliphatic hydrocarbon or unsaturated aliphatic hydrocarbon or a cyclic hydrocarbon containing 1 to 18 carbon atoms and n is a whole number from 2 to 6 are used as reinforcing additives in rubber mixtures containing a silica or silicate filler, and in a given case carbon black; the organosilane is coated on the surface of the silica or silicate filler particles.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: December 14, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Friedrich Thurn, Kurt Burmester, Johannes Pochert, Siegfried Wolff
  • Patent number: 3978103
    Abstract: Sulfur containing organosilicon compounds are prepared having the formula:Z -- Alk -- S.sub.n -- Alk -- Zin which Z is: ##EQU1## where R.sub.1 and R.sub.alkyl of 1 to 4 carbon atoms or phenyl andR.sub.2 is alkoxy of 1 to 8 carbon atoms, cycloalkoxy of 5 to 8 carbon atoms or alkylmercapto of 1 to 8 carbon atoms, alk is a divalent aliphatic hydrocarbon or unsaturated aliphatic hydrocarbon or a cyclic hydrocarbon containing 1 to 18 carbon atoms and n is a whole number from 2 to 6.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: August 31, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Eugen Meyer-Simon, Werner Schwarze, Friedrich Thurn, Rudolf Michel
  • Patent number: 3957718
    Abstract: Silica containing mixtures for the improvement of the adhesion of vulcanizable mixtures of natural and/or synthetic rubber to reinforcing fillers or supports of textile and/or metallic fabrics after the vulcanization are prepared that substantially consist of (A) active synthetically produced silica or silicates having a specific surface area according to the BET procedure of about 50 to 500 m.sup.2 /g and an average primary particle size of from about 5 to 100 and at least one of (B) phenolic resin or aminoplast forming components, namely on the one hand phenols and/or amines and on the other hand aldehydes or aldehyde donors, and/or at least (C) one organosilane which can be a bisalkoxysilylalkyl-oligosulfide of the formulaI. z-alk-S.sub.n -Alk-Z,in which Z stands for the group ##EQU1## in which R.sub.1 is an alkyl group with 1 to 4 carbon atoms or the phenyl group and R.sub.
    Type: Grant
    Filed: December 26, 1974
    Date of Patent: May 18, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Johannes Pochert, Siegfried Wolff, Friedrich Thurn
  • Patent number: 3947436
    Abstract: There are prepared sulfur containing organoorganooxysilanes of the formula A-X-Z where A is R-S--, where R is a triazine or thiodiazole residue, X is a divalent organic residue, Z is -SiR" (OR').sub.2 ; -Si(OR').sub.3 ; -Si(OR').sub.2 -O-Si(OR').sub.3 ; -Si(OR').sub.2 -O-Si(OR').sub.2 -X-A; where R' and R" are alkyl groups of 1 to 12 carbon atoms. The compounds are useful as additives to cross-linkable mixtures containing organic polymers.
    Type: Grant
    Filed: March 14, 1974
    Date of Patent: March 30, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Gottfried Rocktaschel, Friedrich Thurn, Horst Fleischhauer, Werner Schwarze, Hermann Westlinning
  • Patent number: 3938574
    Abstract: A vulcanizable rubber mixture for tire treads containing a rubber, preferably vulcanizable with sulfur, silica filler, plasticizer oil, a sulfur containing organosilane, sulfur and an accelerator comprising one or two polybutadiene rubbers in an amount of 20 to 100 weight % of the total elastomer, one or two rubbers other than a polybutadiene of the group consisting of synthetic rubber and natural rubber in an amount of 80 to 0 weight % of the total elastomer, plasticizer oil in an amount of 40 to 100 parts by weight per 100 parts by weight of rubber, at least one bis-[alkoxysilylalkyl]-oligosulfide in an amount of 0.1 to 25 parts by weight per 100 parts by weight of rubber, sulfur and/or sulfur donors in an amount of about 0.2 to 8 parts by weight per 100 parts by weight of rubber, and at least one vulcanization accelerator in an amount of about 0.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: February 17, 1976
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventors: Kurt Burmester, Siegfried Wolff, Erhard Klotzer, Friedrich Thurn