Patents by Inventor Graeme Moad
Graeme Moad 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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Patent number: 6495643Abstract: The invention relates to compounds of the formulae: processes for their preparation, polymers, co-polymers or block co-polymers containing them or their use as monomers or co-monomers in free radical polymerization and in the manufacture of adhesives, dental composites or optical lenses.Type: GrantFiled: October 2, 2001Date of Patent: December 17, 2002Assignee: Commonwealth Scientific and Industrial Research OrganizationInventors: Richard Alexander Evans, Ezio Rizzardo, Graeme Moad
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Patent number: 6462114Abstract: A process for forming a microgel which comprises a crosslinked core and a multiplicity of linear polymeric arms attached to the core, wherein the process comprises (a) first forming a halogen atom terminated prepolymer with a weight average molecular weight from 1,000 to 25,000 by polymerizing monoethylenically unsaturated monomers in the presence of an organic sulfonyl halide, an organic complexing agent and a transition metal (i.e., Cu, Ru, Ni, Re, Pd, Fe, or Rh); and (b) subsequently polymerizing the prepolymer with a mixture of monoethylenically unsaturated monomers and 0.5 to 60 mole percent, based on the total moles of monomer and prepolymer, of multi-olefinic polymerizable monomers to form a microgel with a weight average molecular weight of 10,000 to 100,000,000 and crosslinked core.Type: GrantFiled: October 3, 2001Date of Patent: October 8, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
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Publication number: 20020061989Abstract: This invention concerns the preparation of polymers of low polydispersity and/or controlled molecular weight and architecture employing living free radical polymerization initiated by an alkoxyamine initiator or nitroxide plus, optionally, a free radical initiator; the polymer produced thereby; selected nitroxide and alkoxyamine initiators; and a process for making the initiators; the polymeric products being useful in protective coatings.Type: ApplicationFiled: May 9, 2001Publication date: May 23, 2002Inventors: Albert G. Anderson, Alexei Gridnev, Graeme Moad, Ezio Rizzardo, San Hoa Thang
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Patent number: 6376626Abstract: A free-radical polymerization process for making macromonomers having the structure: comprising contacting: (a) CH2═CHY; (b) optionally, CH2═CXB; and (c) free-radicals, produced from a free-radical source; in which B, U, X, Y, Z, m, n and p are defined in the text; macromonomer quality being controlled by adjusting one or more of the following variables: molar ratios of a, b and c; temperature; monomer concentration; and conversion.Type: GrantFiled: October 19, 1999Date of Patent: April 23, 2002Assignee: Commonwealth Scientific and Industrial Research OrganizationInventors: John Chiefari, Graeme Moad, Ezio Rizzardo, Alexei A. Gridnev
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Patent number: 6355718Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises: I) introducing mono-olefinic monomer, catalyst, and initiator into a reactor in the absence of multi-olefinic monomer and producing an activatable prepolymer, component B; II) contacting the product of I) with multi-olefinic monomer to produce components A and C, optionally in the presence of additional initiator; also optionally in the presence of additional mono-olefinic monomer and initiator; the ratio of components A/(B+C) can be controlled by varying the mole ratio of Component B/ multi-olefinic monomer from 0.05/1 up to 5/1, by decreasing the mole ratio to increase the ratio of A/(B+C), and increasing the mole ratio to decrease the ratio of A/(B+C).Type: GrantFiled: July 9, 1999Date of Patent: March 12, 2002Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific and Industrial Research Organization, University of Melbourne, AustraliaInventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
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Patent number: 6350822Abstract: A polymer blend comprising a polyester, a polyfunctional acid anhydride wherein said polyfunctional acid anhydride has a functionality as described herein of three or more, and a polyhydric alcohol or precursor thereto wherein said polyhydric alcohol has a functionality of three or more, and wherein said molar ratio of said polyfunctional acid anhydride to the polyhydric alcohol or precursor thereto is in the range of 0.5:1 to (10×C):1, where C is the number of moles of alcohol or equivalent in the polyhydric alcohol or precursor thereto.Type: GrantFiled: October 19, 1999Date of Patent: February 26, 2002Assignee: Polymers Australia Pty LimitedInventors: Gary Joseph Van Diepen, Michael Shane O'Shea, Graeme Moad
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Publication number: 20020022683Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises:Type: ApplicationFiled: October 3, 2001Publication date: February 21, 2002Inventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
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Publication number: 20020022684Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises:Type: ApplicationFiled: October 3, 2001Publication date: February 21, 2002Inventors: Charles T. Berge, Michael Fryd, Jeffery W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San H. Thang
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Publication number: 20020019476Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises:Type: ApplicationFiled: October 3, 2001Publication date: February 14, 2002Inventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
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Publication number: 20020019475Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises:Type: ApplicationFiled: October 3, 2001Publication date: February 14, 2002Inventors: Charles T. Berge, Michael Fryd, Jeffery W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
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Patent number: 6344556Abstract: The invention relates to compounds of the formulae: processes for their preparation, polymers, co-polymers or block co-polymers containing them or their use as monomers or co-monomers in free radical polymerisation and in the manufacture of adhesives, dental composites or optical lenses.Type: GrantFiled: December 10, 1998Date of Patent: February 5, 2002Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Richard Alexander Evans, Ezio Rizzardo, Graeme Moad
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Patent number: 6291620Abstract: Process for the synthesis of block polymers, homopolymers and copolymers of narrow polydispersity having formula (1) by contacting selected vinyl monomer(s), vinyl-terminated compound(s) and free radicals in which effective control of production of polymer is achieved by controlling the mole ratio of vinyl monomer(s), vinyl-terminated compound(s) and free radicals relative to one another; and polymers produced therebyType: GrantFiled: November 20, 1997Date of Patent: September 18, 2001Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific Industrial Research OrganizationInventors: Graeme Moad, Catherine Louise Moad, Julia Krstina, Ezio Rizzardo, Thomas Robert Darling, Charles Thomas Berge
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Patent number: 6271340Abstract: This invention concerns the preparation of polymers of low polydispersity and/or controlled molecular weight and architecture employing living free radical polymerization initiated by an alkoxyamine initiator or nitroxide plus, optionally a free radical initiator, the polymer produced thereby; selected nitroxide and alkoxyamine initiators; and a process for making the initiators; the polymeric products being useful in protective coatings.Type: GrantFiled: November 5, 1999Date of Patent: August 7, 2001Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific & Industrial Research OrganizationInventors: Albert G. Anderson, Alexei Gridnev, Graeme Moad, Ezio Rizzardo, San Hoa Thang
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Patent number: 6235857Abstract: This invention relates to a process for the production of lower molecular weight polymers by free radical-initiated polymerization of unsaturated species characterized by the use of an unsaturated compound of Formula I as a chain transfer agent: wherein R1 and R2 are the same or different and are selected from the group consisting of hydrogen, optionally substituted alkyl, optionally substituted saturated or aromatic carbocyclic or heterocyclic ring, and halogen; X is selected from the group consisting of chlorine, bromine, optionally substituted alkylsulfonyl, and optionally substituted arylsulfonyl, Y is selected from the group consisting of halogen, a polymer chain, and CR3R4Z, wherein R3 and R4 are the same or different and are selected from the group consisting of hydrogen, optionally substituted alkyl, optionally substituted saturated, unsaturated or aromatic carbocyclic or hetercyclic ring, and halogen; and Z is selected from the group consisting of chlorine, bromine, optionally suType: GrantFiled: April 3, 1998Date of Patent: May 22, 2001Assignees: Commonwealth Scientific and Industrial Research Organisation, E.I. DuPont DeNemours and CompanyInventors: Ezio Rizzardo, San Hoa Thang, Graeme Moad, Yen Kwong Chong
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Patent number: 6043361Abstract: The invention relates to compounds of the formulae: processes for their preparation, polymers, co-polymers or block co-polymers containing them or their use as monomers or co-monomers in free radical polymerisation and in the manufacture of adhesives, dental composites or optical lenses.Type: GrantFiled: August 26, 1997Date of Patent: March 28, 2000Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Richard Alexander Evans, Ezio Rizzardo, Graeme Moad
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Patent number: 5977278Abstract: The present invention relates to polymers having the formula: ##STR1## wherein: M, Q, X, Y, Z, R.sup.3 and R.sup.4 are as defined in the text.Type: GrantFiled: May 7, 1998Date of Patent: November 2, 1999Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific and Industrial Research OrganisationInventors: Ezio Rizzardo, San Hoa Thang, Graeme Moad, Charles T. Berge
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Patent number: 5830966Abstract: Compounds of general formula (I) ##STR1## characterised in that R.sup.1 and R.sup.2 are independently selected from the group consisting of COOR, CN, aryl, substituted aryl, COOH, halogen, C(O)NHR.sup.4, C(O)NR.sup.5 R.sup.6 ;X and Y are independently selected from the group consisting of H, COOH, COOR, CN, R.sup.3 CO--, C(O)NHR.sup.4, C(O)NR.sup.5 R.sup.6, P(O)(OR.sup.7).sub.2 and SO.sub.2 R.sup.8 ; with the proviso that X and Y are not both H; or X and Y together with the carbon atom to which they are attached form a carbocyclic or heterocyclic ring system which can contain oxygen, sulfur or nitrogen atoms; and R, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are various groups;and polymers and copolymers derived from such compounds.Type: GrantFiled: January 26, 1996Date of Patent: November 3, 1998Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific & Industrial Research OrganisationInventors: San Hoa Thang, Ezio Rizzardo, Graeme Moad
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Patent number: 5773543Abstract: A process for the free radical initiated polymerization of unsaturated species characterized by the use of compound of Formula (I) as chain transfer agents: ##STR1## wherein: X is selected from hydrogen; CN; optionally substituted aryl; COOH; COOR; C(O)NHR.sup.6 ; C(O)NR.sup.7 R.sup.8 ; and halogen;Q is selected from COOR.sup.1 ; CN; and C(O)NR.sup.7 R.sup.8 ;Y is selected from hydrogen; C.sub.1 to C.sub.6 alkyl; C.sub.1 to C.sub.6 alkyl substituted with one or more substituents selected from hydroxy, amino, C.sub.1 to C.sub.6 alkoxy, C.sub.1 to C.sub.6 alkoxycarbonyl, halogen, CN and optionally substituted aryl; C.sub.1 to C.sub.6 alkenyl; and C.sub.1 to C.sub.6 alkynyl;Z is selected from COOR.sup.2 ; CN; and optionally substituted aryl;R.sup.3 and R.sup.4 are the same or different and are selected from hydrogen C.sub.1 to C.sub.4 alkyl and halogen; or R.sup.3 and R.sup.Type: GrantFiled: August 1, 1996Date of Patent: June 30, 1998Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Ezio Rizzardo, San Hoa Thang, Graeme Moad, Charles Thomas Berge
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Patent number: 5756605Abstract: A method for the solution or amulsion polymerization of ethylenically unsaturated monomers, styrene, and other free radical polymerizatable monomers in aqueous media in which a cobalt chain transfer agent is used which has both hydrolytic stability and solubility in water and in the organic phase with preferential solubility in the organic phase.Type: GrantFiled: May 5, 1997Date of Patent: May 26, 1998Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific and IndustrialInventors: Graeme Moad, Catherine Louise Moad, Julia Krstina, Ezio Rizzardo, San Hoa Thang, Michael Fryd
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Patent number: 5665839Abstract: Compound of the Formula 1 ##STR1## wherein: R.sup.1 and R.sup.2 are independently selected from the group comprising hydrogen, C.sub.1 to C.sub.6alkyl, C.sub.1 to C.sub.6 haloalkyl, phenyl, and substituted phenyl;X is selected from the group comprising sulfur, sulphone, disulfide;Y is selected from oxygen, carbon, N--H, N-alkyl, N-aryl, or sulfur; andZ is any linking functionality.The compounds represent a new class of ring opening monomers.Type: GrantFiled: July 20, 1995Date of Patent: September 9, 1997Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Ezio Rizzardo, Richard Alexander Evans, Graeme Moad, San Hoa Thang