Patents by Inventor Gerard I. Jansma

Gerard I. Jansma 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 production of methylene diphenyl diisocyanate isomer mixtures with specific isomer distributions and new products derived
    Patent number: 9090540
    Abstract: The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2?-MDI isomer content and a high 2,4?-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4?-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: July 28, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Andrei S. Merenov, Dennis W. Jewell, Paul A. Gillis, Gerard I. Jansma, Ashley W. Breed, John J. Anderson, Daniel J. Reed
  • Process for the production of methylene diphenyl diisocyanate isomer mixtures with high 2,4?-methylene diphenyl diisocyanate purity
    Patent number: 9080005
    Abstract: The present invention includes a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2?-MDI isomer content and a high 2,4?-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4?-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: July 14, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Andrei S. Merenov, Gerard I. Jansma, Paul A. Gillis
  • PROCESS FOR THE PRODUCTION OF METHYLENE DIPHENYL DIISOCYANATE ISOMER MIXTURES WITH HIGH 2,4'- METHYLENE DIPHENYL DIISOCYANATE PURITY
    Publication number: 20140264163
    Abstract: The present invention includes a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2?-MDI isomer content and a high 2,4?-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4?-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications.
    Type: Application
    Filed: November 19, 2012
    Publication date: September 18, 2014
    Applicant: Dow Global Technologies LLC
    Inventors: Andrei S. Merenov, Gerard I. Jansma, Paul A. Gillis
  • PROCESS FOR THE PRODUCTION OF METHYLENE DIPHENYL DIISOCYANATE ISOMER MIXTURES WITH SPECIFIC ISOMER DISTRIBUTIONS AND NEW PRODUCTS DERIVED
    Publication number: 20130172604
    Abstract: The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2?-MDI isomer content and a high 2,4?-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4?-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications.
    Type: Application
    Filed: September 20, 2011
    Publication date: July 4, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Andrei S. Merenov, Dennis W. Jewell, Paul A. Gillis, Gerard I. Jansma, Ashley W. Breed, John J. Anderson, Daniel J. Reed