Patents by Inventor Arnulf Werner

Arnulf Werner 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 polyols
    Patent number: 8865945
    Abstract: The present invention provides polyols which can be obtained by a simple process. These polyols, unless explicitly specified, are to be understood to encompass both polyether polyols and polyether ester polyols. The invention further provides the simple process for the production of the polyols, and also, the production of polyurethanes comprising reacting a polyol according to the invention with a polyisocyanate.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: October 21, 2014
    Assignee: Bayer MaterialScience AG
    Inventors: Klaus Lorenz, Arnulf Werner, Marcus Eichmann
  • Method for producing polyols
    Patent number: 8501904
    Abstract: A process for the preparation of a polyol which includes reacting an amino-group-containing starter compound with an alkylene oxide in the presence of a catalyst to form a polyol, wherein the catalyst is based on a compound selected from the group consisting of alkali metal hydroxides, alkali, alkaline earth metal hydrides, alkaline earth metal carboxylates, and alkaline earth hydroxides, and wherein the catalyst is present in an amount of from 0.004 to 0.1 wt. % based on the amount of polyol; and neutralizing the polyol with from 0.75 to 1 mol of sulfuric acid per mol of catalyst used.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: August 6, 2013
    Assignee: Bayer MaterialScience AG
    Inventors: Klaus Lorenz, Arnulf Werner, Marcus Eichmann
  • METHOD FOR PRODUCING POLYOLS
    Publication number: 20110105714
    Abstract: A process for the preparation of a polyol which includes reacting an amino-group-containing starter compound with an alkylene oxide in the presence of a catalyst to form a polyol, wherein the catalyst is based on a compound selected from the group consisting of alkali metal hydroxides, alkali, alkaline earth metal hydrides, alkaline earth metal carboxylates, and alkaline earth hydroxides, and wherein the catalyst is present in an amount of from 0.004 to 0.1 wt. % based on the amount of polyol; and neutralizing the polyol with from 0.75 to 1 mol of sulfuric acid per mol of catalyst used.
    Type: Application
    Filed: April 6, 2009
    Publication date: May 5, 2011
    Inventors: Klaus Lorenz, Arnulf Werner, Marcus Eichmann
  • PROCESS FOR THE PREPARATION OF AQUEOUS FORMALDEHYDE SOLUTIONS
    Publication number: 20100137450
    Abstract: Aqueous formaldehyde solutions are prepared and the formaldehyde content of the aqueous formaldehyde solutions produced is determined by an online analytical method. The desired formaldehyde content can subsequently be established by addition of water so that an aqueous formaldehyde solution having a defined formaldehyde content (formalin) is obtained.
    Type: Application
    Filed: November 19, 2009
    Publication date: June 3, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Heniz-Herbert Müller, Stephan Ehlers, Andreas Schlemenat, Arnulf Werner, Martin Schiffhauer
  • Process for the preparation of polyols
    Publication number: 20090048420
    Abstract: The present invention provides polyols which can be obtained by a simple process. These polyols, unless explicitly specified, are to be understood to encompass both polyether polyols and polyether ester polyols. The invention further provides the simple process for the production of the polyols, and also, the production of polyurethanes comprising reacting a polyol according to the invention with a polyisocyanate.
    Type: Application
    Filed: August 15, 2008
    Publication date: February 19, 2009
    Inventors: Klaus Lorenz, Arnulf Werner, Marcus Eichmann