Patents by Inventor Emmerich Jager

Emmerich Jager 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).

  • Process for the preparation of naphthalenesulfonic acid/formaldehyde condensates having a low free formaldehyde content
    Patent number: 5206336
    Abstract: Process for the preparation of naphthalenesulfonic acid/formaldehyde condensates having a low content of free formaldehyde, in which the condensation products of naphthalenesulfonic acid and formaldehyde obtained after the condensation, are brought to a pH of greater than 11.5 at a temperature of not less than 80.degree. C. immediately after the condensation, and are kept under these conditions until the desired formaldehyde content is reached. The resins are preferably used as plasticizers for building materials, for example as concrete plasticizers.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: April 27, 1993
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Emmerich Jager, Walter Lechner
  • Process for the preparation of naphthalenesulfonic acid/formaldehyde condensates having a low free formaldehyde content
    Patent number: 5101007
    Abstract: Process for the preparation of naphthalenesulfonic acid/formaldehyde condensates having a low content of free formaldehyde, in which the condensation products of naphthalenesulfonic acid and formaldehyde obtained after the condensation are brought to a pH of greater than 11.5 at a temperature of not less than 80.degree. C. immediately after the condensation, and are kept under these conditions until the desired formaldehyde content is reached. The resins are preferably used as plasticizers for building materials, for example as concrete plasticizers.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: March 31, 1992
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Emmerich Jager, Walter Lechner