Patents by Inventor Walter Hafner

Walter Hafner 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: 4968668
    Abstract: 2-Methyl-3-(3-methylphenyl)-propan-1-ol, 2-methyl-3-(3,5-dimethylphenyl)-propan-1-ol, 1-(3-methylphenyl)-2-methylbutan-3-ol and 1-(3,5-dimethylphenyl)-2-methylbutan-3-ol, their preparation and use as fragrances.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: November 6, 1990
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Walter Hafner, Walter Gebauer, Marlies Regiert, Wilhelm Friedrich, Erich Markl
  • Patent number: 4948780
    Abstract: Compounds of the general formulae ##STR1## in which R may be a methyl or ethyl radical and R.sup.1 may be a hydrogen, methyl or ethyl radical are disclosed. Also provided as part of the present invention are processes for the preparation of the above compounds. The compounds of the invention are useful as scents.
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: August 14, 1990
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Walter Hafner, Helmut Gebauer, Erich Markl, Marlies Regiert
  • Patent number: 4849401
    Abstract: The invention discloses compounds of the general formula ##STR1## in which R represents a methyl radical or a methoxy radical when R.sup.1 is a hydrogen atom; orR represents a methyl radical when R.sup.1 is a methyl radical.The compounds of the invention are useful as fragrances.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: July 18, 1989
    Assignee: Consortium fur elektrochemische Industrie, GmbH
    Inventors: Wilhelm Friedrich, Helmut Gebauer, Walter Hafner, Marlies Regiert
  • Patent number: 4710316
    Abstract: Compounds of the general formula (I) ##STR1## and compounds of the general formula (II) ##STR2## in which R.sup.1 represents --OH, --CH.sub.2 OH, --CH.sub.2 --OCH.sub.3, --CHOH--CH.sub.3, --CHO or --CH(OCH.sub.3).sub.2,R.sup.2 represents methyl or ethyl,R.sup.3 represents hydrogen or methyl, andX represents hydrogen or methyl, are disclosed.Processes for the manufacture of certain compounds of formula (I) and for those of formula (II) are also provided. The compounds are useful as perfume materials.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: December 1, 1987
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Walter Hafner, Peter Ritter, Helmut Gebauer, Marlies Regiert
  • Patent number: 4405469
    Abstract: This invention relates to organosiloxanes which have SiC-bonded ester groups and contain at least one unit of the general formula: ##EQU1## is which R represents the same or different monovalent hydrocarbon radicals having from 1 to 12 carbons atoms, which are free of aliphatic unsaturation and which may contain one ether oxygen atom; R' represents hydrogen or a methyl group (CH.sub.3) and a is O, 1 or 2. These organosiloxanes can be prepared by hydrolyzing or co-hydrolyzing silanes of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a X.sub.3-a'where R, R' and a are the same as above and X represents the same or different hydrolyzable atoms or groups. Also, they may be prepared by the addition of a diester of allyl succinic acid and/or methallyl succinic acid to an organosiloxane containing Si-bonded hydrogen. These new organosiloxanes may be used as lubricants for inorganic and organic fibers, metal surfaces and as hydraulic fluids.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: September 20, 1983
    Assignee: Consortium fur Elektrochemische Ind. GmbH
    Inventors: Walter Hafner, Erich Markl, Ludwig Eibel, Gerhard Kreis, Dietrich Samrowski, Manfred Wick, Bernward Deubzer, Wilhelm Friedrich
  • Patent number: 4393220
    Abstract: The invention relates to fungicidally active compositions that contain at least one compound of the general formula ##STR1## and/or a compound of the formula ##STR2## in which: A denotes the --CH.dbd.CH-- or --C.tbd.C-- group and R.sub.1 and R.sub.2 represent hydrogen or methyl.The active substances according to the invention can be obtained by reacting correspondingly substituted succinic acids, or acid halides, anhydrides or esters thereof, with 3,5-dichloroaniline.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: July 12, 1983
    Assignee: Consortium fur elektrochemische Industrie GmbH
    Inventors: Norman Haberle, Otto Eberle, Walter Hafner
  • Patent number: 4385185
    Abstract: Compounds of the general formula I: ##STR1## wherein R.sub.1 and R.sub.2 are equal or different alkyl-, alkoxyalkyl-, or aryl groups, or together form a ring; R.sub.3 is an allyl or benzyl radical; and R.sub.4 and R.sub.5 represent hydrogen, alkyl, alkoxyalkyl, alkenyl or further compounds of the formula II: ##STR2## wherein R.sub.1, R.sub.2, R.sub.4 and R.sub.5 have the meaning indicated above and R.sub.6 stands for hydrogen or methyl or to compounds which are modified by the addition of hydrogen to at least one olefinic or carbonylic double bond of compounds of the general formula I or II. The invention also relates to a process for preparing the new compounds. The compounds of the general formula II are obtained by thermal treatment of a selection of compounds of formula I, for which R.sub.3 stands for the allyl or methallyl radical. The compounds according to the invention are used as fragrant and flavoring substances.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: May 24, 1983
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Helmut Gebauer, Walter Hafner
  • Patent number: 4380675
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are equal or different aliphatic radicals, if desired, branched, and R.sub.3 stands for H or CH.sub.3. The invention also relates to a process for making these compounds and their use as fragrant and flavoring products.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: April 19, 1983
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Helmut Gebauer, Walter Hafner
  • Patent number: 4322473
    Abstract: This invention relates to organosiloxanes which have SiC-bonded ester groups and contain at least one unit of the general formula: ##EQU1## in which R represents the same or different monovalent hydrocarbon radicals having from 1 to 12 carbon atoms, which are free of aliphatic unsaturation and which may contain one ether oxygen atom; R' represents hydrogen or a methyl group (CH.sub.3) and a is 0, 1 or 2. These organosiloxanes can be prepared by hydrolyzing or co-hydrolyzing silanes of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a X.sub.3-a,where R, R' and a are the same as above and X represents the same or different hydrolyzable atoms or groups. Also, they may be prepared by the addition of a diester of allyl succinic acid and/or methallyl succinic acid to an organosiloxane containing Si-bonded hydrogen. These new organosiloxanes may be used as lubricants for inorganic and organic fibers, metal surfaces and as hydraulic fluids.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: March 30, 1982
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Walter Hafner, Erich Markl, Ludwig Eibel, Gerhard Kreis, Dietrich Samrowski, Manfred Wick, Bernward Deubzer, Wilhelm Friedrich
  • Patent number: 4264459
    Abstract: Stabilized organopolysiloxane oils having at least one aliphatic hydrocarbon radical with at least two carbon atoms and containing rubidium and/or cesium compounds which are at least partially soluble in the oil, in which the amount of rubidium and/or cesium present in the oil is from 0.01 to 3 percent by weight, based on the weight of the oil.The stabilized organopolysiloxane oils are useful as lubricants or as additives for lubricating compositions.
    Type: Grant
    Filed: January 24, 1980
    Date of Patent: April 28, 1981
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Walter Hafner, Erich Markl, Dietrich Samrowski
  • Patent number: 4207246
    Abstract: This invention relates to organosiloxanes which have SiC-bonded ester groups and contain at least one unit of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a O.sub.3-a/2in which R represents the same or different monovalent hydrocarbon radicals having from 1 to 12 carbon atoms, which are free of aliphatic unsaturation and which may contain one ether oxygen atom; R' represents hydrogen or a methyl group (CH.sub.3) and a is 0, 1 or 2. These organosiloxanes can be prepared by hydrolyzing or co-hydrolyzing silanes of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a X.sub.3-a,where R, R' and a are the same as above and X represents the same or different hydrolyzable atoms or groups. Also, they may be prepared by the addition of a diester of allyl succinic acid and/or methallyl succinic acid to an organosiloxane containing Si-bonded hydrogen.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: June 10, 1980
    Assignee: Consortium f/ur Elektrochemische Industrie GmbH
    Inventors: Walter Hafner, Erich Markl, Ludwig Eibel, Gerhard Kreis, Dietrich Samrowski, Manfred Wick, Bernward Deubzer, Wilhelm Friedrich