Patents by Inventor Prakash Wadgaonkar

Prakash Wadgaonkar 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).

  • 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
  • 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
  • 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
  • Publication number: 20070073090
    Abstract: The present invention provides a novel bisphenol compound of formula (I). wherein R1 and R2 are the same or different and are independently either hydrogen or methyl at each occurrence. The present invention also provides a process for preparation of these bisphenol compounds starting from Cashew Nut Shell Liquid (CNSL); —a renewable resource material. The bisphenols prepared in the present invention can be utilized as difunctional monomers for the preparation of various polymers such as epoxy resins, polyesters, polyethersulfones, polyetherketones, polyetherimides, polyarylates, polycarbonates, etc.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 29, 2007
    Inventors: Arvind More, Prakash Wadgaonkar
  • Patent number: 7182894
    Abstract: The invention discloses a method for synthesizing hollow structured freestanding membrane having pore size of 2 to 200 nm which provides long-term stability that makes it viable for many practical applications such as protein separation and drug delivery.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: February 27, 2007
    Assignee: Council of Scientific & Industrial Research
    Inventors: Pandian Senthil Kumar, Periasamy Selva Kannan, Arvind More, Rahul Shingte, Prakash Wadgaonkar, Murali Sastry
  • Publication number: 20060142501
    Abstract: The present invention relates to the development of hydrophobically modified polymers [HMPs], which have emerged as promising materials in diverse fields such as paints, cosmetics, oils, food and textiles. They are used as thickeners in these applications. In our study, the hydrophobic modification on PAA was performed using hydrophobic compounds obtained from naturally occurring materials such as Cashew Nut Shell Liquid, [CNSL]. The DCCI coupling method was chosen for the hydrophobic modification of PAA. A series of hydrophobically modified PAAs were synthesized with different degrees of hydrophobic contents and were characterized by solution rheology.
    Type: Application
    Filed: September 6, 2005
    Publication date: June 29, 2006
    Inventors: Manohar Badiger, Prakash Wadgaonkar, Ashish Lele, Aarti Shedge, Dominque Hourdet, Patrick Perrin, Christophe Chassenieux
  • Publication number: 20050199544
    Abstract: The invention discloses a method for synthesizing hollow structured freestanding membrane having pore size of 2 to 200 nm which provides long-term stability that makes it viable for many practical applications such as protein separation and drug delivery.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 15, 2005
    Inventors: Pandian Kumar, Periasamy Kannan, Arvind More, Rahul Shingte, Prakash Wadgaonkar, Murali Sastry
  • Publication number: 20050140047
    Abstract: Compositions exhibiting water resistant anti-static properties prepared from a thermoplastic polymer and a polymeric anti-static salt is disclosed.
    Type: Application
    Filed: March 31, 2004
    Publication date: June 30, 2005
    Inventors: Jennifer Dean, Dibakar Dhara, Theodorus Hoeks, Chiel Leenders, Anandrao Patil, Bhimrao Sarwade, Prakash Wadgaonkar
  • Publication number: 20050038275
    Abstract: A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl) polydiorganosiloxane, a bis(carbonyloxyaryl) polydiorganosiloxane, and an ether linkage; each Y1 independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group; “q” represents any integer from and including zero through the number of positions on G1 available for substitution; “t” represents an integer equal to at least one; “s” represents an integer equal to either zero or one; and “u” represents any integer including zero; with the proviso that wh
    Type: Application
    Filed: September 29, 2004
    Publication date: February 17, 2005
    Inventors: Sanjoy Chowdhury, Prakash Wadgaonkar, Theodorus Hoeks, Suresh Rajaraman, Bhimrao Sarwade, Chilukuri Avadhani
  • Publication number: 20050038274
    Abstract: A quaternary onium aromatic sulfonate represented by the formula: wherein each R1 independently comprises substituted or unsubstituted, aliphatic or aromatic, hydrocarbyl, carbocyclic or heterocyclic radicals, each X is selected from the group consisting of phosphorus and nitrogen; wherein “a” has a value of 0, 1 or 2, and “b” has a value of 0 or 1 with the proviso that (a+b) is equal to 1 or 2; G1 is an aromatic group; E comprises a bis(carbonyloxyalkyl) polydiorganosiloxane, a bis(carbonyloxyaryl) polydiorganosiloxane, and an ether linkage; each Y1 independently comprises hydrogen, a monovalent hydrocarbon group, alkenyl, allyl, halogen, bromine, chlorine; nitro; and OR, wherein R is a monovalent hydrocarbon group; “q” represents any integer from and including zero through the number of positions on G1 available for substitution; “t” represents an integer equal to at least one; “s” represents an integer equal to either zero or one; and “u” represents any integer including zero; with the proviso that wh
    Type: Application
    Filed: September 29, 2004
    Publication date: February 17, 2005
    Inventors: Sanjoy Chowdhury, Prakash Wadgaonkar, Theodorus Hoeks, Suresh Rajaraman, Bhimrao Sarwade, Chilukuri Avadhani