Patents by Inventor Christopher Henry Such
Christopher Henry Such 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).
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Publication number: 20170333942Abstract: A method of polymerising monomer to form polymer at the surface of particulate material, said method comprising: providing a dispersion of said particulate material in a continuous liquid phase, said dispersion comprising a RAFT agent as a stabiliser for said particulate material, and said continuous liquid phase comprising one or more ethylenically unsaturated monomers; and polymerising said one or more ethylenically unsaturated monomers under the control of said RAFT agent to thereby form polymer at the surface of said particulate material.Type: ApplicationFiled: July 14, 2017Publication date: November 23, 2017Inventors: Brian Stanley HAWKETT, Christopher Henry SUCH, Duc Ngoc NGUYEN, Jason Michael FARRUGIA, Olga Maree MACKINNON
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Patent number: 9731321Abstract: A method of polymerizing monomer to form polymer at the surface of particulate material, said method comprising: providing a dispersion of said particulate material in a continuous liquid phase, said dispersion comprising a RAFT agent as a stabilizer for said particulate material, and said continuous liquid phase comprising one or more ethylenically unsaturated monomers; and polymerizing said one or more ethylenically unsaturated monomers under the control of said RAFT agent to thereby form polymer at the surface of said particulate material.Type: GrantFiled: October 4, 2005Date of Patent: August 15, 2017Assignee: The University of SydneyInventors: Brian Stanley Hawkett, Christopher Henry Such, Duc Ngoc Nguyen, Jason Michael Farrugia, Olga Maree Mackinnon
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Patent number: 9339781Abstract: The present invention relates to a method of preparing an aqueous dispersion of polymer encapsulated particulate material, the method comprising: providing a dispersion of the particulate material in a continuous aqueous phase, the dispersion comprising ethylenically unsaturated monomer and a stabilizer for the particulate material; and polymerizing the ethylenically unsaturated monomer by non-living free radical polymerization to form polymer that encapsulates the particulate material, thereby providing the aqueous dispersion of polymer encapsulated particulate material; wherein polymerization of the ethylenically unsaturated monomer comprises: (a) polymerizing a monomer composition that includes ionizable ethylenically unsaturated monomer so as to form a base responsive water swellable non-living polymer layer that encapsulates the particulate material; and (b) polymerizing a monomer composition that includes non-ionizable ethylenically unsaturated monomer so as to form an extensible, water and base permeabType: GrantFiled: May 31, 2012Date of Patent: May 17, 2016Assignee: The University of SydneyInventors: Matthew Paul Baker, Timothy Warren Davey, Brian Stanley Hawkett, Duc Ngoc Nguyen, Christopher Henry Such
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Publication number: 20140329932Abstract: The present invention relates to a method of preparing an aqueous dispersion of polymer encapsulated particulate material, the method comprising: providing a dispersion of the particulate material in a continuous aqueous phase, the dispersion comprising ethylenically unsaturated monomer and a stabiliser for the particulate material; and polymerising the ethylenically unsaturated monomer by non-living free radical polymerisation to form polymer that encapsulates the particulate material, thereby providing the aqueous dispersion of polymer encapsulated particulate material; wherein polymerisation of the ethylenically unsaturated monomer comprises: (a) polymerising a monomer composition that includes ionisable ethylenically unsaturated monomer so as to form a base responsive water swellable non-living polymer layer that encapsulates the particulate material; and (b) polymerising a monomer composition that includes non-ionisable ethylenically unsaturated monomer so as to form an extensible, water and base permeabType: ApplicationFiled: May 31, 2012Publication date: November 6, 2014Applicant: THE UNIVERSITY OF SYDNEYInventors: Matthew Paul Baker, Timothy Warren Davey, Brian Stanley Hawkett, Duc Ngoc Nguyen, Christopher Henry Such
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Patent number: 8796359Abstract: The invention provides a method of polymerizing monomer to form polymer at the surface of solid particulate material, said method comprising: providing a dispersion of said solid particulate material in a continuous hydrophilic liquid phase, said dispersion comprising a hydrophilic RAFT agent as a stabilizer for said solid particulate material, and said continuous hydrophilic liquid phase comprising one or more ethylenically unsaturated monomers; and polymerizing said one or more ethylenically unsaturated monomers under the control of said hydrophilic RAFT agent to thereby form polymer at the surface of said solid particulate material.Type: GrantFiled: April 20, 2011Date of Patent: August 5, 2014Assignee: The University of SydneyInventors: Brian Stanley Hawkett, Christopher Henry Such, Duc Ngoc Nguyen
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Patent number: 8779029Abstract: The invention provides a method of polymerising monomer to form polymer at the surface of solid particulate material, said method comprising: providing a dispersion of said solid particulate material in a continuous hydrophilic liquid phase, said dispersion comprising a hydrophilic RAFT agent as a stabiliser for said solid particulate material, and said continuous hydrophilic liquid phase comprising one or more ethylenically unsaturated monomers; and polymerising said one or more ethylenically unsaturated monomers under the control of said hydrophilic RAFT agent to thereby form polymer at the surface of said solid particulate material.Type: GrantFiled: April 3, 2007Date of Patent: July 15, 2014Assignee: The University of SydneyInventors: Brian Stanley Hawkett, Christopher Henry Such, Duc Ngoc Nguyen
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Patent number: 8389645Abstract: The invention relates to solid polyester granules of the type used as matting agents in paints. In particular, the invention relates to a new redox initiating system for use in a suspension polymerization process that is used to manufacture the solid polyester granules, to a process for the preparation of the solid polyester granules, and to paint compositions containing the solid polyester granules.Type: GrantFiled: January 27, 2005Date of Patent: March 5, 2013Assignee: Duluxgroup (Australia) Pty Ltd.Inventors: Christopher Henry Such, Barbara Aurelia Czapski, Karen Lai-On Seligman, Deepak Ajinkya, Algirdas Kazimieras Serelis
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Publication number: 20120238693Abstract: The invention provides a method of preparing a crosslinked polymer, which method comprises polymerising branched polyunsaturated monomers by a metathesis polymerisation reaction, wherein the branched polyunsaturated monomers contain acyclic ethylenically unsaturated groups that are capable of undergoing polymerization by a metathesis reaction such that the metathesis polymerisation produces a crosslinked polymer and substantially no non-volatile ethylenically unsaturated by-products.Type: ApplicationFiled: June 1, 2012Publication date: September 20, 2012Applicants: MONASH UNIVERSITY, DELUXGROUP (AUSTRALIA) PTY. LTDInventors: Christopher Henry SUCH, Jim Patel, William Roy Jackson, Andrea Jane Robinson, Algirdas Kazimieras Serelis
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Patent number: 8211989Abstract: The invention provides a method of preparing a crosslinked polymer, which method comprises polymerising branched polyunsaturated monomers by a metathesis polymerisation reaction, wherein the branched polyunsaturated monomers contain acyclic ethylenically unsaturated groups that are capable of undergoing polymerization by a metathesis reaction such that the metathesis polymerisation produces a crosslinked polymer and substantially no non-volatile ethylenically unsaturated by-products.Type: GrantFiled: June 30, 2006Date of Patent: July 3, 2012Assignees: Monash University, Duluxgroup (Austrailia) Pty. LtdInventors: Christopher Henry Such, Jim Patel, William Roy Jackson, Andrea Jane Robinson, Algirdas Kazimleras Serelis
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Publication number: 20120128743Abstract: The present invention relates to a method of forming polymer on the surface of polymer particles, the method comprising: (i) providing a dispersion comprising a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and a RAFT agent as a stabiliser for said organic phase; (ii) polymerising the one or more ethylenically unsaturated monomers under the control of the RAFT agent to form an aqueous dispersion of seed polymer particles; (iii) crosslinking the seed polymer particles; (iv) swelling the crosslinked seed particles with one or more ethylenically unsaturated monomers to form an aqueous dispersion of monomer swollen crosslinked seed polymer particles; (v) increasing the temperature of the monomer swollen crosslinked seed polymer particles to expel at least some of the monomer therein onto the surface of the particles; and polymerising at least the expelled monomer to form polymer on the surface of the particles.Type: ApplicationFiled: February 24, 2010Publication date: May 24, 2012Inventors: Brian Stanley Hawkett, Thi Thuy Binh Pham, Christopher Henry Such
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Publication number: 20120073470Abstract: Compositions for hardening paint, particularly residual waste water-based paints are described. The compositions comprise at least one water soluble or water dispersible, natural or synthetic polymer and optionally an agent that increases the ionic strength of the paint. Methods of hardening waste water-based paint for environmentally responsible disposal are also described.Type: ApplicationFiled: June 8, 2010Publication date: March 29, 2012Applicant: duxgroup (Australia) Pty Ltd.Inventors: Christopher Henry Such, Thamala Chandrakanthi Weerasinghe, Rodney Alan Vockler
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Publication number: 20110196088Abstract: The invention provides a method of polymerising monomer to form polymer at the surface of solid particulate material, said method comprising: providing a dispersion of said solid particulate material in a continuous hydrophilic liquid phase, said dispersion comprising a hydrophilic RAFT agent as a stabiliser for said solid particulate material, and said continuous hydrophilic liquid phase comprising one or more ethylenically unsaturated monomers; and polymerising said one or more ethylenically unsaturated monomers under the control of said hydrophilic RAFT agent to thereby form polymer at the surface of said solid particulate material.Type: ApplicationFiled: April 20, 2011Publication date: August 11, 2011Applicant: THE UNIVERSITY OF SYDNEYInventors: Brian Stanley HAWKETT, Christopher Henry Such, Duc Ngoc Nguyen
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Patent number: 7858695Abstract: The invention provides a process for preparing an aqueous dispersion of water insoluble heteropolymeric particles comprising polymerising in an aqueous reaction medium ethylenically unsaturated monomers, said ethylenically unsaturated monomers comprising ionisable ethylenically unsaturated monomers and non-ionisable hydrophilic ethylenically unsaturated monomers, to form said heteropolymeric particles dispersed in said aqueous reaction medium, wherein the monomers in said reaction medium at any point in time comprise less than 5 weight % of ionisable ethylenically unsaturated monomer, wherein for at least a part of the polymerisation the monomers in said reaction medium have a composition which is maintained with an ionisable ethylenically unsaturated monomer content of from 0.Type: GrantFiled: July 23, 2004Date of Patent: December 28, 2010Assignee: DuluxGroup (Australia) Pty LtdInventors: Amanda Jane Chalmers, Jason Michael Farrugia, Elizabeth Ann Salter, Christopher Henry Such, Olga Maree MacKinnon
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Publication number: 20100227975Abstract: The invention provides a method for preparing an aqueous dispersion of polymer particles comprising the following steps: (i) preparing a dispersion having a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and an amphiphilic RAFT agent as a stabiliser for said organic phase, and (ii) polymerising said one or more ethylenically unsaturated monomers under the control of said amphiphilic RAFT agent to form said aqueous dispersion of polymer particles, novel amphiphilic RAFT agents for use in this method, novel RAFT agents useful in making these amphiphilic RAFT agents and methods for their manufacture.Type: ApplicationFiled: May 14, 2010Publication date: September 9, 2010Applicant: UNIVERSITY OF SYDNEYInventors: Christopher Henry SUCH, Ezio RIZZARDO, Algirdas Kazimieras SERELIS, Brian Stanley HAWKETT, Robert Goulston GILBERT, Christopher James FERGUSON, Robert John HUGHES, Edna Olejnik
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Patent number: 7745553Abstract: The invention provides a method for preparing an aqueous dispersion of polymer particles comprising the following steps: (i) preparing a dispersion having a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and an amphiphilic RAFT agent as a stabilizer for said organic phase, and (ii) polymerizing said one or more ethylenically unsaturated monomers under the control of said amphiphilic RAFT agent to form said aqueous dispersion of polymer particles, novel amphiphilic RAFT agents for use in this method, novel RAFT agents useful in making these amphiphilic RAFT agents and methods for their manufacture.Type: GrantFiled: December 20, 2002Date of Patent: June 29, 2010Assignee: University of SydneyInventors: Christopher Henry Such, Ezio Rizzardo, Algirdas Kazimieras Serelis, Brian Stanley Hawkett, Robert Goulston Gilbert, Christopher James Ferguson, Robert John Hughes, Edna Olejnik, legal representative
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Publication number: 20100048750Abstract: The invention provides a method of preparing an aqueous dispersion of vesiculated polymer particles, the method comprising: preparing a dispersion of polymerisable particles within a continuous aqueous phase, the polymerisable particles having a structure that is defined by an outer organic phase that comprises one or more ethylenically unsaturated monomers and surrounds an inner aqueous phase, said inner aqueous phase defining a single void within the polymerisable particle, wherein a RAFT agent functions as a stabiliser for the outer organic phase within the continuous aqueous phase, and wherein a RAFT agent functions as a stabiliser for the inner aqueous phase within the outer organic phase; and polymerising the one or more ethylenically unsaturated monomers under the control of a RAFT agent functioning as said stabiliser to form the aqueous dispersion of vesiculated polymer particles.Type: ApplicationFiled: October 19, 2007Publication date: February 25, 2010Applicant: The University of SydneyInventors: Annabelle Christina Mary Blom, Michelle Jocelyn Carey, Brian Stanley Hawkett, Duc Ngoc Nguyen, Thi Thuy Binh Pham, Christopher Henry Such, Gregory Goodman Warr
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Publication number: 20090258979Abstract: The invention provides a method of polymerising monomer to form polymer at the surface of solid particulate material, said method comprising: providing a dispersion of said solid particulate material in a continuous hydrophilic liquid phase, said dispersion comprising a hydrophilic RAFT agent as a stabiliser for said solid particulate material, and said continuous hydrophilic liquid phase comprising one or more ethylenically unsaturated monomers; and polymerising said one or more ethylenically unsaturated monomers under the control of said hydrophilic RAFT agent to thereby form polymer at the surface of said solid particulate material.Type: ApplicationFiled: April 3, 2007Publication date: October 15, 2009Applicant: The University of SydneyInventors: Brian Stanley Hawkett, Christopher Henry Such, Duc Ngoc Nguyen
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Publication number: 20090186976Abstract: The invention provides a method of preparing a crosslinked polymer, which method comprises polymerising branched polyunsaturated monomers by a metathesis polymerisation reaction, wherein the branched polyunsaturated monomers contain acyclic ethylenically unsaturated groups that are capable of undergoing polymerization by a metathesis reaction such that the metathesis polymerisation produces a crosslinked polymer and substantially no non-volatile ethylenically unsaturated by-products.Type: ApplicationFiled: June 30, 2006Publication date: July 23, 2009Inventors: Christopher Henry Such, Jim Patel, William Roy Jackson, Andrea Jane Robinson, Algirdas Kazimieras Serelis
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Publication number: 20090156734Abstract: The invention relates generally to solid polyester granules of the type used as matting agents in paints. In particular, the invention relates to a new redox initiating system for use in a suspension polymerisation process used to manufacture the solid polyester granules, to a process for the preparation of the solid polyester granules, and to paint compositions comprising solid polyester granules.Type: ApplicationFiled: January 27, 2005Publication date: June 18, 2009Applicant: Orica Australia Pty Ltd.Inventors: Christopher Henry Such, Barbara Aurelia Czapski, Karen Lai-On Seligman, Deepak Ajinkya, Algirdas Kazimieras Serelis
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Publication number: 20080268250Abstract: A method of polymerising monomer to form polymer at the surface of particulate material, said method comprising: providing a dispersion of said particulate material in a continuous liquid phase, said dispersion comprising a RAFT agent as a stabiliser for said particulate material, and said continuous liquid phase comprising one or more ethylenically unsaturated monomers; and polymerising said one or more ethylenically unsaturated monomers under the control of said RAFT agent to thereby form polymer at the surface of said particulate material.Type: ApplicationFiled: October 4, 2005Publication date: October 30, 2008Inventors: Brian Stanley Hawkett, Christopher Henry Such, Duc Ngoc Nguyen, Jason Michael Farrugia, Olga Maree Mackinnon