Patents Assigned to L. Bruggemann KG
  • Composition for anionic lactam polymerization
    Patent number: 9290621
    Abstract: A composition comprising a) at least one aliphatic or cycloaliphatic isocyanate compound having at least two isocyanate groups and b) at least one lactone, containing 4 to 7 carbon atoms and use of the composition as an activator for anionic lactam polymerization to obtain polyamides.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: March 22, 2016
    Assignee: BruggemannChemical L. Bruggemann KG
    Inventors: Jan Klitschke, Klaus Bergmann
  • COMPOSITION FOR ANIONIC LACTAM POLYMERIZATION
    Publication number: 20120283406
    Abstract: A composition comprising a) at least one aliphatic or cycloaliphatic isocyanate compound having at least two isocyanate groups and b) at least one lactone, containing 4 to 7 carbon atoms and use of the composition as an activator for anionic lactam polymerization to obtain polyamides.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Applicant: BrüggemannChemical L. Brüggemann KG
    Inventors: Jan Klitschke, Klaus Bergmann
  • Sulphinic acid derivatives, method for producing them, and their use
    Patent number: 6586622
    Abstract: The present invention relates to sulfinic acid compounds of the formula (I) where the substituents are as defined in the description. The novel sulfinic acid compounds can be used as reducing agents which do not eliminate formaldehyde.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: July 1, 2003
    Assignee: L. Bruggemann KG
    Inventors: Josef Berghofer, Harry Rothmann
  • Sulphinic acid derivatives, method for producing them, and their use
    Publication number: 20020042353
    Abstract: The present invention relates to sulfinic acid compounds of the formula (I) 1
    Type: Application
    Filed: April 16, 2001
    Publication date: April 11, 2002
    Applicant: L. Bruggemann KG
    Inventors: Josef Berghofer, Harry Rothmann
  • Sulphinic acid derivatives, method for producing them, and their use
    Patent number: 6211400
    Abstract: The present invention relates to sulfinic acid compounds of the formula (I) where the substituents are as defined in the description. The novel sulfinic acid compounds can be used as reducing agents which do not eliminate formaldehyde.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: April 3, 2001
    Assignee: L. Bruggemann KG
    Inventors: Josef Berghofer, Harry Rothmann