Patents by Inventor Joachim Thormer
Joachim Thormer 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).
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Patent number: 5416167Abstract: Vulcanizable rubber compositions are disclosed which contain partial polycarboxylic acid esters or their salts. Vulcanizates obtained from the compositions are readily processible and are found to have reduced compression set and high tension values, in particular after ageing by heat.Type: GrantFiled: May 3, 1994Date of Patent: May 16, 1995Assignee: Bayer AktiengesellschaftInventors: Joachim Thormer, Thomas Scholl, Hans-Wilhelm Engels
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Patent number: 5187232Abstract: Mixtures of polychloroprene and hydrogenated nitrile rubber give vulcanizates combining high modulus with a high dynamic stress absorption capacity.Type: GrantFiled: October 9, 1990Date of Patent: February 16, 1993Assignee: Bayer AktiengesellschaftInventors: Rudiger Musch, Joachim Thormer, Hartmuth Buding, Friedrich Leibbrandt
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Patent number: 5034469Abstract: Hydrogenation products of olefinically unsaturated polymers having nitrile groups prepared in the presence of ruthenium catalysts in a solvent comprising a low-molecular ketone and a secondary or tertiary C.sub.3 -C.sub.6 -alcohol by hydrogenation, can be processed to vulcanizates with improved compression set values.Type: GrantFiled: June 18, 1990Date of Patent: July 23, 1991Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Joachim Thormer, Wilfried Nolte, Johann Hohn, Paul-Christian Fiedler, Thomas Himmler
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Patent number: 5013783Abstract: Hydrogenated nitrile rubbers filled with sodium aluminium silicate suffer relatively little deterioration of the mechanical properties, e.g. elongation at break, during hot air aging.Type: GrantFiled: June 11, 1990Date of Patent: May 7, 1991Assignee: Bayer AktiengesellschaftInventors: Joachim Thormer, Ernst Rohde, Zsolt Szentivanyi
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Patent number: 4829128Abstract: Statistical copolymers of from 85 to 52% by weight of a conjugated diene, from 15 to 48% by weight of at least one unsaturated nitrile and from 0 to 10% by weight of further monomers, copolymerizable with diene and nitrile, which have a molecular weight M.sub.n of from 0.5 to 30 kg/mol and a degree of hydrogenation of the double bonds of greater than 80%, give nitrile rubbers, which are mixed and colvulcanized with these copolymers, an increased ozone resistance.Type: GrantFiled: October 24, 1986Date of Patent: May 9, 1989Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Zsolt Szentivanyi, Joachim Thormer
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Patent number: 4826721Abstract: This invention relates to fabric or cord coated as an individual filament or as the finished carrier material with hydrogenated nitrile rubber and the laminated materials prepared therefrom with the vulcanized rubber. It, furthermore, relates to a latex of said hydrogenated nitrile rubber.Type: GrantFiled: May 26, 1987Date of Patent: May 2, 1989Assignee: Bayer AktiengesellschaftInventors: Werner Obrecht, John Goossens, Jean Mirza, Jurgen Pabst, Joachim Thormer, Zsolt Szentivanyi
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Patent number: 4774295Abstract: Covulcanizates with good mechanical properties obtained from mixtures of (a) from 50 to 5% by weight of chlorinated or chlorosulphonated polyethylene, acrylate rubber or ethylene vinyl alcohol copolymers and (b) from 50 to 95% by weight of partially or completely hydrogenated nitrile group-containing elastomers containing from 25 to 140 nitrile nitrogen atoms and less than 35 double bonds for each 1,000 carbon atoms, by cross linking.Type: GrantFiled: December 11, 1986Date of Patent: September 27, 1988Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Heinrich Konigshofen, Zsolt Szentivanyi, Joachim Thormer
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Patent number: 4746707Abstract: The selective hydrogenation in a homogeneous phase of unsaturated compounds carrying reducible groups containing nitrogen so as to preserve the reducible groups containing nitrogen succeeds with excellent yields if a compound corresponding to the following general formula:RuH.sub.m (R.sub.1 CO.sub.2).sub.n (L).sub.pwhereinR.sub.1 represents an optionally substituted alkyl, aryl, cycloalkyl or aralkyl group;L represents a phosphane or arsane;m represents 0 or 1;n represents 1 or 2; andp represents 2 or 3;is used as catalyst.Type: GrantFiled: August 1, 1986Date of Patent: May 24, 1988Assignee: Bayer AktiengesellschaftInventors: Paul Fiedler, Hartmuth Buding, Rudolf Braden, Joachim Thormer
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Patent number: 4675248Abstract: Co-vulcanizates which have good mechanical properties, a good resistance to oil, an effective flame resistance and a low smoke gas density are obtained from mixtures of (a) from 95 to 5% by weight of EVA rubber and (b) from 5 to 95% by weight of elastomers which contain nitrile groups and have from 25 to 140 nitrile groups and less than 35 double bonds per 1000 carbon atoms, by radical cross-linking.Type: GrantFiled: October 17, 1984Date of Patent: June 23, 1987Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Heinrich Konigshofen, Zsolt Szentivanyi, Joachim Thormer
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Patent number: 4647627Abstract: Statistical copolymers of from 85 to 52% by weight of a conjugated diene, from 15 to 48% by weight of at least one unsaturated nitrile and from 0 to 10% by weight of further monomers, copolymerizable with diene and nitrile, which have a molecular weight M.sub.n of from 0.5 to 30 kg/mol and a degree of hydrogenation of the double bonds of greater than 80%, give nitrile rubbers, which are mixed and colvulcanized with these copolymers, an increased ozone resistance.Type: GrantFiled: August 28, 1985Date of Patent: March 3, 1987Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Zsolt Szentivanyi, Joachim Thormer
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Patent number: 4631315Abstract: Nitrile group-containing polymers are hydrogenated in a homogeneous phase with preservation of the nitrile groups in a low molecular weight ketone as a solvent and with a compound corresponding to formulaRuX[(L.sub.1)(L.sub.2).sub.n ]as a catalyst, whereinX represents hydrogen, halogenL.sub.1 represents hydrogen, halogen, optionally substituted cyclopentadienyl,L.sub.2 represents a phosphane, bisphosphane or arsane andn is 1, 2 or 3 and[(L.sub.1)(L.sub.2).sub.n ] represents a cyclopentadienyl bisphosphane.Type: GrantFiled: September 3, 1985Date of Patent: December 23, 1986Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Paul Fiedler, Heinrich Konigshofen, Joachim Thormer
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Patent number: 4631309Abstract: Equipment for the exploration and/or production of petroleum and natural gas having elastomeric components have high resistance to materials encountered if the elastomeric components are shaped from a hydrogenated butadiene-acrylonitrile copolymer with a residual double bond content less than 1% and unhydrogenated nitrile groups.Type: GrantFiled: December 6, 1984Date of Patent: December 23, 1986Assignee: Bayer AktiengesellschaftInventors: Joachim Thormer, Friedrich Leibbrandt, Zsolt Szentivanyi, Hartmuth Buding
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Patent number: 4581417Abstract: The hydrogenation of NBR in an aromatic solvent with tris-(triphenylphosphane)-rhodium-(I) halide as catalyst under hydrogen pressures of from 20 to 350 bars and at temperatures in the range from 100.degree. to 145.degree. C. leads to products having degrees of hydrogenation of at least 90% and outstanding properties when the catalyst concentration amounts to between 0.05 and 0.6% by weight, based on solid rubber, and when hydrogenation is carried out in the presence of at most 2% by weight of triphenylphosphane.Type: GrantFiled: August 8, 1984Date of Patent: April 8, 1986Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Heinrich Konigshofen, Zsolt Szentivanyi, Joachim Thormer
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Patent number: 4576992Abstract: Co-vulcanizates having good mechanical properties are obtained from mixtures of: (a) from 35 to 5%, by weight, of hydrocarbon elastomers; (b) from 65 to 95%, by weight, of nitrile group-containing elastomers having from 25 to 140 nitrile nitrogen atoms and less 12 double bonds per 1000 carbon atoms; by radical cross-linking.Type: GrantFiled: November 29, 1984Date of Patent: March 18, 1986Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Heinrich Konigshofen, Zsolt Szentivanyi, Joachim Thormer
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Patent number: 4565614Abstract: Co-vulcanizates are produced from mixtures of (a) from 95 to 5% by weight of fluoroelastomers and (b) from 5 to 95% by weight of elastomers which contain nitrile groups and have from 25 to 140 nitrile-nitrogen atoms and less than 35 double bonds per 1000 carbon atoms, and (c) conventional mixture ingredients, the percentages relating to the sum total of (a) and (b). The co-vulcanizates are suitable for the production of seals and other rubber articles, in particular for areas of use which impose exacting requirements.Type: GrantFiled: October 4, 1984Date of Patent: January 21, 1986Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Zsolt Szentivanyi, Joachim Thormer
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Patent number: 4460446Abstract: A process for crosslinking with peroxides using triallyl citrates as activators and co-agents.Type: GrantFiled: March 23, 1983Date of Patent: July 17, 1984Assignee: Bayer AktiengesellschaftInventors: Herbert Bartl, Hans Rudolph, Joachim Thormer
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Patent number: 4435532Abstract: Use of zinc salts of mercaptobenzimidazoles corresponding to the following general formula: ##STR1## wherein R represents hydrogen or a C.sub.1 -C.sub.4 alkyl group; and/or a zinc salt of a di-C.sub.1 -C.sub.9 -alkyldithiophosphate for the preparation of nitrile rubber/PVC mixtures.Type: GrantFiled: June 28, 1982Date of Patent: March 6, 1984Assignee: Bayer AktiengesellschaftInventors: Joachim Thormer, Hans H. Bertram, Otto Benn, Helmut Hurnik
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Patent number: 4190613Abstract: A freeflowing rubber mixture which is stable against coalescence and cohesion comprising a vulcanizable rubber in powder form and a minor amount of an acrylonitrile polymer as a separating agent.Type: GrantFiled: September 21, 1977Date of Patent: February 26, 1980Assignee: Bayer AktiengesellschaftInventors: Joachim Thormer, Jochen Schnetger, Gerhard Giersiepen, Wilhelm Gobel
