Patents by Inventor Prakash Purushottam Wadgaonkar

Prakash Purushottam 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).

  • Publication number: 20240083849
    Abstract: The present invention relates to a new bisphenol bearing pendant clickable norbornenyl group of formula (I) and its aromatic polyesters bearing pendant norbornenyl groups of formula (II) and processes for the preparation thereof.
    Type: Application
    Filed: December 29, 2021
    Publication date: March 14, 2024
    Inventors: Deepak Mannusing MAHER, Samadhan Suresh NAGANE, Prakash Purushottam WADGAONKAR
  • Patent number: 10808118
    Abstract: The present invention disclosed novel epoxy novolac composite comprising environmentally friendly toughening agents based on bio-derived chemicals namely, Difunctional glycidyl ether epoxy resin (Cardolite NC-514) and Polyglycidyl ether of an alkenyl phenol formaldehyde novolac resin (Cardolite NC-547) used for the toughening of epoxy novolac resin namely Poly[(phenyl glycidyl ether)-co-formaldehyde] [PPGEF].
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: October 20, 2020
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Manohar Virupax Badiger, Rajeshwari Shyamji Gour, Prakash Purushottam Wadgaonkar
  • Patent number: 10294209
    Abstract: The present invention discloses novel difunctional monomers compound containing pendant clickable furyl group of formula (I), process for the preparation and polymers prepared there from. wherein, X is selected from —COOCH3, —COOH, —CON3, —NCO, —CONHNH2, —CH2OH n is selected from 2 to 12.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 21, 2019
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Kavita Garg, Deepshikha Chatterjee, Prakash Purushottam Wadgaonkar
  • Patent number: 10266654
    Abstract: The present invention discloses polymeric ionic liquid (PIL) composition comprising a polymer selected from PBI or ABPBI and their derivatives or analogues covalently attached to fluorescence moiety selected from poly aromatic hydrocarbons, preferably pyrene or anthracene. Further, the invention discloses a process for preparing said composition with enhanced fluorescence and stability. Also, disclosed herein is the use of said fluorescent PIL in detection of explosives, as membranes for gas permeation and as chemo sensors.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 23, 2019
    Assignee: Council of Scientific & Industrial Research
    Inventors: Sayali Vinayak Shaligram, Ulhas Kanhaiyalal Kharul, Prakash Purushottam Wadgaonkar
  • Patent number: 10239865
    Abstract: The patent discloses bisphenol monomers of formula I with pendant maleimide group connected via alkylene spacer and preparation thereof. Also, it discloses polymers based on bisphenol monomers containing pendant clickable maleimide group. Further, it provides a process for the preparation of polymers possessing pendant clickable maleimide groups based on bisphenols containing pendant maleimide group. Formula (I) wherein, x is an integer selected from 0 to 10.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: March 26, 2019
    Assignee: Council of Scientific & Industrial Research
    Inventors: Samadhan Suresh Nagane, Sachin Suresh Kuhire, Prakash Purushottam Wadgaonkar
  • Publication number: 20180016250
    Abstract: The present invention discloses novel difunctional monomers compound containing pendant clickable furyl group of formula (I), process for the preparation and polymers prepared there from. wherein, X is selected from —COOCH3, —COOH, —CON3, —NCO, —CONHNH2, —CH2OH n is selected from 2 to 12.
    Type: Application
    Filed: December 16, 2015
    Publication date: January 18, 2018
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Kavita Garg, Deepshikha Chatterjee, Prakash Purushottam Wadgaonkar
  • Publication number: 20180009788
    Abstract: The patent discloses bisphenol monomers of formula I with pendant maleimide group connected via alkylene spacer and preparation thereof. Also, it discloses polymers based on bisphenol monomers containing pendant clickable maleimide group. Further, it provides a process for the preparation of polymers possessing pendant clickable maleimide groups based on bisphenols containing pendant maleimide group. Formula (I) wherein, x is an integer selected from 0 to 10.
    Type: Application
    Filed: January 15, 2016
    Publication date: January 11, 2018
    Inventors: SAMADHAN SURESH NAGANE, Sachin Suresh KUHIRE, Prakash Purushottam WADGAONKAR
  • Publication number: 20170369427
    Abstract: The present invention provides bio-based aromatic diisocyanate of formula (I). [Formula should be inserted here] wherein X is OCH3, Y is selected from —H or OCH3, and m=0-12. The present invention further provides a method for preparation of aromatic diisocyanate of formula (I) useful for preparation of polyurethane.
    Type: Application
    Filed: December 23, 2015
    Publication date: December 28, 2017
    Inventors: Prakash Purushottam WADGAONKAR, Sachin Suresh Kuhire
  • Publication number: 20170355849
    Abstract: The present invention disclosed novel epoxy novolac composite comprising environmentally friendly toughening agents based on bio-derived chemicals namely, Difunctional glycidyl ether epoxy resin (Cardolite NC-514) and Polyglycidyl ether of an alkenyl phenol formaldehyde novolac resin (Cardolite NC-547) used for the toughening of epoxy novolac resin namely Poly[(phenyl glycidyl ether)-co-formaldehyde] [PPGEF].
    Type: Application
    Filed: December 16, 2015
    Publication date: December 14, 2017
    Inventors: Manohar Virupax BADIGER, Rajeshwari Shyamji GOUR, Prakash Purushottam WADGAONKAR
  • Patent number: 9562004
    Abstract: The application discloses monomers based on bisphenols with pendent reactive azido groups. The application further provides a process for preparation of bisphenol monomers with pendent reactive azido groups which are used further for preparing polymers with pendent reactive functional groups and graft copolymer.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: February 7, 2017
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Samadhan Suresh Nagane, Prakash Sudhir Sane, Bhausaheb Vilas Tawade, Prakash Purushottam Wadgaonkar
  • Publication number: 20160369057
    Abstract: The present invention discloses polymeric ionic liquid (PIL) composition comprising a polymer selected from PBI or ABPBI and their derivatives or analogues covalently attached to fluorescence moiety selected from poly aromatic hydrocarbons, preferably pyrene or anthracene. Further, the invention discloses a process for preparing said composition with enhanced fluorescence and stability. Also, disclosed herein is the use of said fluorescent PIL in detection of explosives, as membranes for gas permeation and as chemo sensors.
    Type: Application
    Filed: February 27, 2015
    Publication date: December 22, 2016
    Inventors: Sayali Vinayak SHALIGRAM, Ulhas Kanhaiyalal KHARUL, Prakash Purushottam WADGAONKAR
  • Publication number: 20150274646
    Abstract: The application discloses monomers based on bis phenols with pendent reactive azido groups. The application further provides a process for preparation of bisphenol monomers with pendent reactive azido groups which are used further for preparing polymers with pendent reactive functional groups and graft copolymer.
    Type: Application
    Filed: November 7, 2013
    Publication date: October 1, 2015
    Inventors: Samadhan Suresh Nagane, Prakash Sudhir Sane, Bhausaheb Vilas Tawade, Prakash Purushottam Wadgaonkar
  • Patent number: 9133089
    Abstract: A process for synthesis of sulfonated, arylated 3-pentadecyl phenol (cross linking catalyst) of formula I starting from Cashew Nut Shell Liquid. Formula I wherein R is benzenesulfonic acid; X is —SO3H, where n is 0 or 1; wherein the process steps comprises hydrogenating cardanol with 5% Pd/C in presence of lower alcoholic solvent at 70° C. under 600 psi hydrogen pressure to obtain 3-pentadecyl phenol; arylating 3-pentadecyl phenol to obtain 3-pentadecyl diphenyl ether; and sulfonating the 3-pentadecyl diphenyl ether to obtain compound of formula I.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: September 15, 2015
    Assignee: Counsel of Scientific & Industrial Research
    Inventors: Prakash Purushottam Wadgaonkar, Bhimrao Dhondiba Sarwade, Bhausaheb Vilas Tawade
  • Publication number: 20140357891
    Abstract: The present invention discloses synthesis of sulfonated, alkylated/arylated 3-pentadecyl phenols, (cross linking catalysts) starting from 3-pentadecyl phenol obtained from Cashew Nut Shell Liquid (CNSL).
    Type: Application
    Filed: December 5, 2012
    Publication date: December 4, 2014
    Inventors: Prakash Purushottam Wadgaonkar, Bhimrao Dhondiba Sarwade, Bhausaheb Vilas Tawade
  • Patent number: 7709687
    Abstract: The present invention provides a novel dicarbanionic initiator of formula (I). The present process further provides a process for the preparation of dicarbanionic initiator of formula (I) comprising reacting 1-bromo-4-(4?-bromophenoxy)-2-pentadecyl benzene of formula (II) with alkyllithium compound for an effecting halogen-lithium exchange reaction of 1-bromo-4-(4?-bromophenoxy)-2-pentadecyl benzene with sec-butyllithium in the presence of a non polar solvent, at a temperature in the range of 0 to 25° C. and its use as an initiator for the synthesis of telechelic polydienes and polystyrenes and SBS or SIS triblock copolymers.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: May 4, 2010
    Assignee: Council Of Scientific & Industrial Research
    Inventors: Yves Gnanou, Rachid Matmour, Arvind Sudhakar More, Prakash Purushottam Wadgaonkar
  • Publication number: 20090076314
    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: April 4, 2008
    Publication date: March 19, 2009
    Inventors: Arvind Sudhakar More, Prakash Purushottam Wadgaonkar
  • Patent number: 7446234
    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: Grant
    Filed: September 27, 2006
    Date of Patent: November 4, 2008
    Assignee: Council of Scientific and Industrial Research
    Inventors: Arvind Sudhakar More, Prakash Purushottam Wadgaonkar
  • Publication number: 20070197723
    Abstract: The present invention provides a novel dicarbanionic initiator of formula (I). The present process further provides a process for the preparation of dicarbanionic initiator of formula (I) comprising reacting 1-bromo-4-(4?-bromophenoxy)-2-pentadecyl benzene of formula (II) with alkyllithium compound for an effecting halogen-lithium exchange reaction of 1-bromo-4-(4?-bromophenoxy)-2-pentadecyl benzene with sec-butyllithium in the presence of a non polar solvent, at a temperature in the range of 0 to 250 C and its use as an initiator for the synthesis of telechelic polydienes and polystyrenes and SBS or SIS triblock copolymers.
    Type: Application
    Filed: October 6, 2006
    Publication date: August 23, 2007
    Inventors: Yves Gnanou, Rachid Matmour, Arvind Sudhakar More, Prakash Purushottam Wadgaonkar
  • Patent number: 6790993
    Abstract: The present invention relates to new aromatic diamines. More particularly, the present invention relates to new aromatic diamines prepared from cashew nut shell liquid (CNSL), which is a renewable resource material. The present invention particularly relates to novel 1,1-bis(4-aminophenyl)-3-alkylcyclohexanes and to a method for their preparation.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: September 14, 2004
    Assignee: Council of Scientific and Industrial Research
    Inventors: Rahul Diliprao Shingte, Prakash Purushottam Wadgaonkar
  • Patent number: 6255439
    Abstract: 1,1 -Bis(4-hydroxyphenyl)-3-alkylcyclohexanes, as illustrated by 1,1-bis (4-hydroxyphenyl)-3-pentadecylcyclohexane, are prepared by hydrogenating a composition comprising 3-alkylphenols to the corresponding cyclohexanol, oxidizing the cyclohexanol to a cyclohexanone and contacting the cyclohexanone with phenol in the presence of an acidic catalyst. The preferred 3-alkylphenols are those derived from cashew nut shell liquid. The products can be used to prepare polycarbonates.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: July 3, 2001
    Assignee: General Electric Company
    Inventors: Chilukuri Ver Avadhani, Prakash Purushottam Wadgaonkar, Swaminathan Sivaram