Patents by Inventor Wolfram Bergold

Wolfram Bergold 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: 4976888
    Abstract: In antifoams based on oil-in-water emulsions, the oil phase of the emulsions contains(a) a C.sub.12 -C.sub.26 -alcohol, a distillation residue which is obtainable in the preparation of alcohols having a relatively large number of carbon atoms by the oxo process or by the Ziegler process and which may furthermore be oxyalkylated and/or(b) a fatty acid ester of a C.sub.12 -C.sub.22 -carboxylic acid with a monohydric to trihydric C.sub.1 -C.sub.18 -alcohol and, if required,(c) a hydrocarbon having a boiling point above 200.degree. C. or a fatty acid of 12 to 22 carbon atoms,accounts for from 5 to 50% by weight of the emulsion and has a mean particle size of less than 25 .mu.m, and from 5 to 50% by weight of components (a) and (b) of the oil phase are replaced by(d) one or more compounds which melt at above 70.degree. C. and are selected from the group consisting of the fatty alcohols of not less than 28 carbon atoms, the esters of a C.sub.1 -C.sub.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: December 11, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Arnold De Clercq, Wolfram Bergold, Hans-Juergen Degen, Jaroslav Melzer
  • Patent number: 4931062
    Abstract: Leather, pelts and leather substitute materials are hydrophobized with a carboxyl-containing polysiloxane whose carboxyl groups are present in neutralized form in an aqueous phase in the absence of emulsifiers and without aftertreatment with mineral tanning agents.
    Type: Grant
    Filed: January 10, 1989
    Date of Patent: June 5, 1990
    Assignee: Basf Aktiengesellschaft
    Inventors: Herbert Bay, Guenter Eckert, Wolfram Bergold
  • Patent number: 4664844
    Abstract: In antifoams based on oil-in-water emulsions, the oil phase of the emulsion contains(a) C.sub.12 -C.sub.26 -alcohols, distillation residues obtained in the preparation of alcohols by an oxosynthesis or by the Ziegler process and/or(b) fatty acid esters of C.sub.12 -C.sub.22 -carboxylic acids with monohydric, dihydric or trihydric C.sub.1 -C.sub.18 -alcohols, with or without(c) a hydrocarbon having a boiling point above 200.degree. C. or fatty acids of 12 to 22 carbon atoms,constitutes from 15 to 60% by weight of the emulsion and has a mean droplet size of from 0.5 to 15 .mu.m. The emulsions are stabilized by the addition of from 0.05 to 0.5% by weight, based on the total emulsion, of a high molecular weight water-soluble homopolymer or copolymer of acrylic acid, methacrylic acid, acrylamide or methacrylamide.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: May 12, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfram Bergold, Jaroslav Melzer
  • Patent number: 4474916
    Abstract: Aqueous solutions comprising 25 to 60 percent by weight of mixtures of(a) polymers of acrylic acid and/or copolymers of acrylic acid with maleic acid and(b) aminopolycarboxylic acids, aminopolyphosphonic acids and/or hydroxyalkanepolyphosphonic acids,such solutions having a pH value of about 3 to about 7 with the acid groups being present 20 to 80 percent in the form of the potassium salts and the remaining acid groups being present in form of the free acid, the amine salt, or mixtures thereof.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: October 2, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Streit, Wolfram Bergold, Dieter Bassing
  • Patent number: 4009119
    Abstract: Aqueous antifoaming emulsions based on fatty alcohols, fatty acid esters, optionally paraffins and free fatty acids, and emulsifiers, in which the average particle size of the emulsified water-insoluble portions is from 4 to 9 .mu..
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: February 22, 1977
    Assignee: Badische Anilin- & Soda-Fabrik Aktiengesellschaft
    Inventors: Franz Poschmann, Wolfram Bergold