Patents by Inventor Marvin J. Graham
Marvin J. Graham 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: 9334345Abstract: Provided is a polymerizable composition including (meth)acrylate monomers having at least two sulfide (—S—) linkages in the monomer. The polymerizable compositions include a first (meth)acrylate monomer represented by the following Formula (I), where L1 is selected from a multivalent optionally substituted hydrocarbyl group optionally interrupted with at least one of —C(O)—, —S—, —O— and combinations thereof, and a divalent linking group represented by the following Formula (A). In Formula (A), Y is O or S. Also in Formula (I), L2 is independently for each n a divalent optionally substituted hydrocarbyl group optionally interrupted with at least one of —O— and —S—, R1 is independently selected for each n from hydrogen and methyl, and n is from 2 to 6. The polymerizable compositions also may include a polymerization moderator. Also provided are polymerizates including photochromic articles and optical elements prepared from such polymerizable compositions.Type: GrantFiled: September 6, 2012Date of Patent: May 10, 2016Assignee: PPG Industries Ohio, Inc.Inventors: Robert D. Herold, Nina V. Bojkova, Marvin J. Graham, Charles R. Hickenboth, Gregory J. McCollum, William H. Retsch, Jr., Hongying Zhou
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Publication number: 20130119585Abstract: Described is a method of preparing a cured, non-elastomeric polymeric sheet derived from a polyisocyanate. The method comprises the following steps: combining a first component and second, separate component to form a reaction mixture; introducing the reaction mixture into a preheated sheet mold at a certain minimum fill rate, allowing the reaction mixture to gel; heating the reaction mixture to a temperature and for a time sufficient to yield a cured sheet having a thickness of at least 6.35 mm (0.25 in); and removing the cured sheet from the mold to yield a non-elastomeric polymeric sheet. When the active hydrogen functional groups in the second component include hydroxyl groups, the first and second components are initially heated to a temperature of at least 50° C., Polyurethane sheets formed by such processes demonstrate minimal optical defects and the process allows for the production of superior sheets of higher thicknesses than previously possible.Type: ApplicationFiled: October 26, 2012Publication date: May 16, 2013Inventors: Marvin J. Graham, George A. Galo, JR., Matteo Lagasi, William H. Retsch, JR.
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Publication number: 20130082220Abstract: Provided is a polymerizable composition including (meth)acrylate monomers having at least two sulfide (—S—) linkages in the monomer. The polymerizable compositions include a first (meth)acrylate monomer represented by the following Formula (I), where L1 is selected from a multivalent optionally substituted hydrocarbyl group optionally interrupted with at least one of —C(O)—, —S—, —O— and combinations thereof, and a divalent linking group represented by the following Formula (A). In Formula (A), Y is O or S. Also in Formula (I), L2 is independently for each n a divalent optionally substituted hydrocarbyl group optionally interrupted with at least one of —O— and —S—, R1 is independently selected for each n from hydrogen and methyl, and n is from 2 to 6. The polymerizable compositions also may include a polymerization moderator. Also provided are polymerizates including photochromic articles and optical elements prepared from such polymerizable compositions.Type: ApplicationFiled: September 6, 2012Publication date: April 4, 2013Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Robert D. Herold, Nina V. Bojkova, Marvin J. Graham, Charles R. Hickenboth, Gregory J. McCollum, William H. Retsch, JR., Hongying Zhou
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Patent number: 8017720Abstract: The present invention provides polythiol oligomer formed by the reaction of at least two or more different dienes and at least one or more dithiol wherein stoichiometric ratio of the sum of the number of equivalents of all polythiols to the sum of the number of equivalents of all dienes used to form the polythiol oligomer is greater than 1.0:1.0; and wherein the two or more different dienes comprise (a) at least one non-cyclic diene and at least one cyclic diene; or (b) at least one aromatic ring-containing diene and at least one non-aromatic cyclic diene; or (c) at least one non-aromatic monocyclic diene and at least one non-aromatic polycyclic diene; Sulfur-containing polyurethane of the present invention can be prepared by combining polyisocyanate, polyisothiocyanate, or mixture thereof; the polythiol oligomer described above; and active hydrogen-containing material.Type: GrantFiled: December 16, 2005Date of Patent: September 13, 2011Assignee: PPG Industries Ohio, Inc.Inventors: Nina V. Bojkova, Robert D. Herold, William H. McDonald, Marvin J. Graham, Robert A. Smith
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Publication number: 20100048852Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing the polyureaurethane. The sulfur-containing polyureaurethane has a refractive index of at least 1.57, an Abbe number of at least 32 and a density of less than 1.3 grams/cm3 when cured. The sulfur-containing polyureaurethane is prepared by the reaction of: (a) a sulfur-containing, isocyanate functional polyurethane prepolymer derived from: (i) a polyisocyanate; and (ii) a polythiol oligomer produced by the reaction of at least two or more different dienes with one or more dithiols and in certain embodiments at least one trifunctional or higher-functional polythiol; and (b) an amine-containing curing agent.Type: ApplicationFiled: November 2, 2009Publication date: February 25, 2010Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Nina V. Bojkova, Robert A. Smith, Robert D. Herold, Chandra B. Rao, William H. McDonald, Vidhu J. Nagpal, Marvin J. Graham, Phillip C. Yu, Suresh G. Sawant, Michael O. Okoroafor
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Patent number: 7473754Abstract: The present invention is directed to a novel polymerizable organic composition comprising one or more radically polymerizable monomers with at least one radically polymerizable monomer having at least two (meth)acryloyl groups that have backbone linkages selected from thiourethane linkages, dithiourethane linkages, combinations of thiourethane linkages and dithiourethane linkages. The present invention is also directed to polymerizates prepared from the polymerizable organic composition, shaped articles prepared from the polymerizable compositions, and photochromic articles that may be prepared from the polymerizable organic composition of the present invention.Type: GrantFiled: October 17, 2000Date of Patent: January 6, 2009Assignee: PPG Industries Ohio, Inc.Inventors: Michael O. Okoroafor, Robert A. Smith, Marvin J. Graham, Robert D. Herold
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Patent number: 7098290Abstract: The present invention is directed to a novel method of preparing a polymerizate, which includes the step of polymerizing a two-component composition, which includes: a first component containing at least one polycyanate reactant having at least two functional groups selected from isocyanate, isothiocyanate and combinations thereof, the polycyanate reactant being the reaction product of: a polythiol monomer having at least two thiol groups; and a polycyanate monomer having at least two functional groups selected from isocyanate, isothiocyanate and combinations thereof; and a second component containing at least one polyamine reactant having at least two functional groups selected from primary amine, secondary amine and combinations thereof. The molar equivalent ratio of (NCO+NCS) groups from the first component to (—NH2+—NH—) groups from the second component is from 0.5 to 100. The present invention is also directed to polymerizates prepared according to the method of the present invention.Type: GrantFiled: October 25, 2000Date of Patent: August 29, 2006Assignee: PPG Industries Ohio, Inc.Inventors: Michael O. Okoroafor, Robert A. Smith, Rifat Tabakovic, Marvin J. Graham, Robert D. Herold
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Publication number: 20040138401Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane adapted to have a refractive index of at least 1.57, an Abbe number of at least 32 and a density of less than 1.3 grams/cm3, when at least partially cured.Type: ApplicationFiled: December 2, 2003Publication date: July 15, 2004Inventors: Nina Bojkova, Robert A. Smith, Robert D. Herold, Chandra Rao, William H. McDonald, Vidhu J. Nagpal, Marvin J. Graham, Phillip C. Yu, Suresh Sawant, Michael O. Okoroafor
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Patent number: 6631021Abstract: Describes novel polyfunctional thiiranes. Also described are polymerizable compositions comprising such novel polyfunctional thiiranes, and polymerizates, e.g., optical lenses, prepared therefrom. The described polymerizates may have a refractive index of at least 1.6, and an Abbe number of at least 27.Type: GrantFiled: February 28, 2001Date of Patent: October 7, 2003Assignee: PPG Industries Ohio, Inc.Inventors: Robert A. Smith, Michael O. Okoroafor, Marvin J. Graham
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Publication number: 20030149217Abstract: The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane when at least partially cured can have a refractive index of at least 1.57, an Abbe number of at least 35 and a density of less than 1.3 grams/cm3. Further, the sulfur-containing polyureaurethane can be prepared by reacting a polyureaurethane prepolymer comprising a polycyanate and at least one hydrogen-containing material, at least one episulfide-containing material; and an amine-containing curing agent.Type: ApplicationFiled: November 5, 2002Publication date: August 7, 2003Inventors: Nina V. Bojkova, Vidhu J. Nagpal, Robert A. Smith, Marvin J. Graham, Michael O. Okoroafor
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Publication number: 20020010313Abstract: Describes novel polyfunctional thiiranes. Also described are polymerizable compositions comprising such novel polyfunctional thiiranes, and polymerizates, e.g., optical lenses, prepared therefrom. The described polymerizates may have a refractive index of at least 1.6, and an Abbe number of at least 27.Type: ApplicationFiled: February 28, 2001Publication date: January 24, 2002Inventors: Robert A. Smith, Michael O. Okoroafor, Marvin J. Graham
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Publication number: 20010047043Abstract: Describes polymerizing with actinic radiation a cationically polymerizable organic composition comprising (a) at least one polyfunctional thiirane having at least two groups represented by the following general formula I, 1Type: ApplicationFiled: February 28, 2001Publication date: November 29, 2001Inventors: Michael O. Okoroafor, Robert D. Herold, Marvin J. Graham, Robert A. Smith, James R. Franks