Patents by Inventor Werner Antwerpen

Werner Antwerpen 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).

  • Use of a water-soluble copolymers based on acrylamidoalkylenesulfonic acid as a detergent additive
    Patent number: 5607618
    Abstract: The present invention relates to the the use of water-soluble copolymers based on acrylamidoalkylenesulfonic acid, vinylacetamide and, if appropriate, other monomers, comprising5-90% by weight of structural units of the formula ##STR1## in which R.sup.1 is hydrogen or methyl,R.sup.2 is C.sub.2 -C.sub.10 -alkylene, preferably C.sub.2 -C.sub.6 -alkylene, particularly preferably C.sub.4 -alkylene, andMe is ammonium or an alkali metal ion,5-95% by weight of structural units of the formula ##STR2## in which R.sup.3 and R.sup.4 independently of one another are hydrogen, methyl or ethyl, or R.sup.3 and R.sup.4 together are a propylene group which, including a radical ##STR3## form a pyrrolidone radical, 0-90% by weight of structural units of the formula ##STR4## in which X is a halogen, preferably chloride,R.sup.5 and R.sup.6 independently of one another are C.sub.1 -C.sub.6 -alkyl, prefrably C.sub.1 -C.sub.3 -alkyl, in particular methyl or ethyl, and0-90% by weight of structural units of the formula --CHR.sup.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: March 4, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Werner Antwerpen, Martin Hille, Gerd Reinhardt
  • Use of copolymers based on vinyl monomers and carboxylic acid amides as a detergent additive
    Patent number: 5542951
    Abstract: Use of copolymers based on vinyl monomers and carboxylic acid amides as a detergent additiveThe present invention relates to the use of copolymers comprising75-95% by weight of the total amount of the monomer of at least one vinyl monomer which is free from carboxyl and amide groups,5-20% by weight of at least one carboxylic acid amide of the formula (I) ##STR1## in which R is a hydrogen atom or a methylol radical,R.sup.1 is a hydrogen atom or a C.sub.1 -C.sub.3 -alkyl radical andR.sup.2 is a hydrogen atom or a methyl radicaland if appropriate together with not more than 5% by weight of a copolymerizable unsaturated carboxylic acid, as a detergent additive for preventing the reabsorption of detached dyestuffs and dyestuff degradation products.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: August 6, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Werner Antwerpen, Hermann Schindler, Gerd Reinhardt
  • Polycondensates containing phosphinic or phosphonic acid groups and siloxane groups
    Patent number: 5492995
    Abstract: The present invention relates to polycondensates of the general formula I ##STR1## in which X stands, at least once, for a group of the formula VII ##STR2## and, at least once, a group of the formula VIII ##STR3## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: February 20, 1996
    Assignee: Hoechst Aktiengsellschaft
    Inventors: Fritz Engelhardt, Karl-Heinz Keil, Jurgen Kuhlwein, Wilfried Schuler, Willi Steckelberg, Ralf Zerrer, Werner Antwerpen
  • Polycondensates containing polysiloxane groups
    Patent number: 5488123
    Abstract: The present invention relates to polycondensates of the general formula I ##STR1## in which ##STR2## and the other variables are defined as indicated in claim 1, processes for their preparation and their use.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: January 30, 1996
    Assignee: Cassella AG
    Inventors: Fritz Engelhardt, Jurgen Kuhlwein, Wilfried Schuler, Ralf Zerrer, Werner Antwerpen