Patents by Inventor Shamal Menon

Shamal Menon 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 manufacture of functional PFPE derivative
    Patent number: 8975445
    Abstract: A process for the manufacture of a functional (per)fluoropolyether derivative comprising at least one triazole group, such process comprising: (1) reacting a (per)fluoropolyether hydroxyl derivative having at least one hydroxyl group [derivative (PFPE-OH)] with an activating agent, to yield an activated (per)fluoropolyether hydroxyl derivative comprising at least one activated hydroxyl group [derivative (a-PFPE-OH)];(2) reacting said activated (per)fluoropolyether hydroxyl derivative [derivative (a-PFPE-OH)] with at least one azide salt to yield a functional (per)fluoropolyether derivative comprising at least one azido group [derivative (PFPE-N3)] ; and (3) reacting said functional (per)fluoropolyether derivative comprising at least one azido group [derivative (PFPE-N3)] with a hydrocarbon compound having a terminal alkyne group to yield a functional (per)fluoropolyether derivative comprising at least one triazole group [derivative (PFPE-azole)].
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: March 10, 2015
    Assignee: Solvay Specialty Polymers Italy S.p.A.
    Inventors: Prakash Wadgaonkar, Shamal Menon, Claudio Adolfo Pietro Tonelli
  • (PER)FLUOROPOLYETHERS WITH bi- OR ter-PHENYL END GROUPS
    Publication number: 20150011446
    Abstract: The present invention relates (per)fluoropolyether compounds comprising a (per)fluoropolyether chain (Rf) having at least two chain ends, wherein at least one of said chain ends have a bi- or ter-phenyl group bearing at least one nitro group and, optionally one or more further substituents. The invention also relates to processes for the preparation of such compounds and to their use for the preparation of lubricant compositions in the form of oils or greases.
    Type: Application
    Filed: February 12, 2013
    Publication date: January 8, 2015
    Inventors: Durairaj Baskaran, Prakash Wadgaonkar, Shamal Menon, Claudio Adolfo Pietro Tonelli
  • Process for the manufacture of functional PFPE derivative
    Publication number: 20120028858
    Abstract: A process for the manufacture of a functional (per)fluoropolyether derivative comprising at least one triazole group, such process comprising: (1) reacting a (per)fluoropolyether hydroxyl derivative having at least one hydroxyl group [derivative (PFPE-OH)] with an activating agent, to yield an activated (per)fluoropolyether hydroxyl derivative comprising at least one activated hydroxyl group [derivative (a-PFPE-OH)]; (2) reacting said activated (per)fluoropolyether hydroxyl derivative [derivative (a-PFPE-OH)] with at least one azide salt to yield a functional (per)fluoropolyether derivative comprising at least one azido group [derivative (PFPE-N3)]; and (3) reacting said functional (per)fluoropolyether derivative comprising at least one azido group [derivative (PFPE-N3)] with a hydrocarbon compound having a terminal alkyne group to yield a functional (per)fluoropolyether derivative comprising at least one triazole group [derivative (PFPE-azole)].
    Type: Application
    Filed: April 2, 2010
    Publication date: February 2, 2012
    Applicant: SOLVAY SOLEXIS S.P.A.
    Inventors: Prakash Wadgaonkar, Shamal Menon, Claudio Adolfo Pietro Tonelli