Patents by Inventor Robert E. Hefner, Jr.

Robert E. Hefner, Jr. 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).

  • ADDUCTS OF EPOXY RESINS DERIVED FROM ALKANOLAMIDES AND A PROCESS FOR PREPARING THE SAME
    Publication number: 20110046321
    Abstract: An adduct and a process for preparing such adduct, wherein the adduct includes at least one reaction product of an epoxy resin material (A) and a compound (B); wherein the epoxy resin material (A) comprises a glycidyl ether or glycidyl ester of an alkanolamide; and compound (B) comprises a compound having two or more reactive hydrogen atoms per molecule, and the reactive hydrogen atoms are reactive with epoxide groups. A curable epoxy resin composition can be prepared from (i) the adduct described above, and (ii) one or more epoxy resins other than the epoxy resin material (A). A cured epoxy resin may be prepared from such curable composition including an article such as a coating, an electrical or structural laminate, an electrical or structural composite, a filament winding, a molding, a casting, and an encapsulation.
    Type: Application
    Filed: May 18, 2009
    Publication date: February 24, 2011
    Inventors: Jim D. Earls, Robert E. Hefner, JR.
  • ADDUCTS OF EPOXY RESINS AND PROCESS FOR PREPARING THE SAME
    Publication number: 20110040046
    Abstract: An adduct comprises at least one reaction product of (i) an epoxy resin material (A) and (ii) a reactive compound (B). The epoxy resin material (A) comprises a cis, trans-1,3- and -1,4-cyclohexanedimethylether moiety and the reactive compound (B) comprises a compound having two or more reactive hydrogen atoms per molecule, wherein the reactive hydrogen atoms are reactive with epoxide groups. A curable epoxy resin composition comprises the adduct described above. A cured epoxy resin is prepared by a process of curing the curable epoxy resin composition.
    Type: Application
    Filed: May 4, 2009
    Publication date: February 17, 2011
    Inventors: Robert E. Hefner, JR., James W. Ringer
  • EPOXY RESINS AND PROCESSES FOR PREPARING THE SAME
    Publication number: 20110039982
    Abstract: Epoxy resins comprising a cis, trans-1,3- and -1,4-cyclohexanedimethylether moiety and processes for preparing the epoxy resins. The process of preparation of the epoxy resins comprises reacting (a) a mixture of a cis-1,3-cyclohexanedimethanol, a trans-1,3-cyclohexanedimethanol, a cis-1,4-cyclohexanedimethanol, and a trans-1,4-cyclohexanedimethanol, (b) an epihalohydrin, (c) a basic acting substance, (d) optionally, a solvent, (e) optionally, a catalyst, and/or (f) optionally, a dehydrating agent. The process may be a slurry epoxidation process, an anhydrous epoxidation process, or a Lewis acid catalyzed coupling and epoxidation process.
    Type: Application
    Filed: May 4, 2009
    Publication date: February 17, 2011
    Inventors: Robert E. Hefner, JR., John W. Hull, JR., James W. Ringer, John N. Argyropoulos
  • ETHYLENICALLY UNSATURATED MONOMERS COMPRISING ALIPHATIC AND AROMATIC MOIETIES
    Publication number: 20110009560
    Abstract: Polymerizable monomers comprising at least one 1- or 2-propylene moiety and further comprising both aromatic moieties and additional aliphatic moieties and polymerizable mixtures, resins and thermoset products based on these monomers.
    Type: Application
    Filed: March 9, 2009
    Publication date: January 13, 2011
    Applicant: Dow Global Technologies Inc.
    Inventors: Robert E. Hefner, JR., Michael J. Mullins, Mark B. Wilson, Ulrich Herold
  • AROMATIC POLYCYANATE COMPOUNDS AND PROCESS FOR THE PRODUCTION THEREOF
    Publication number: 20110009562
    Abstract: Aromatic polycyanate compounds which comprise cycloaliphatic moieties, a process for the production thereof and resins and thermoset products which are based on these compounds.
    Type: Application
    Filed: March 9, 2009
    Publication date: January 13, 2011
    Applicant: Dow Global Technologies Inc.
    Inventors: Michael J. Mullins, Robert E. Hefner, JR., Ulrich Herold, Mark B. Wilson
  • Multifunctional monomers and their use in making cross-linked polymers and porous films
    Patent number: 7635741
    Abstract: This invention is a monomer comprising at least two dienophile groups and at least two ring structures which ring structures are characterized by the presence of two conjugated carbon-to-carbon double bonds and the presence of a leaving group L, wherein L is characterized that when the ring structure reacts with a dienophile in the presence of heat or other energy sources, L is removed to form an aromatic ring structure. This invention is also curable oligomers and polymers and highly cross-linked polymers made with such monomers. Moreover, this invention is a method of making porous films by combining such monomers or their oligomers with a porogen, curing the polymer and removing the porogen.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: December 22, 2009
    Inventors: Q. Jason Niu, Robert E. Hefner, Jr., James P. Godschalx, James T. Pechacek, Kim E. Arndt
  • Multifunctional ethynyl substituted monomers and polyarylene compositions therefrom
    Patent number: 7626059
    Abstract: A compound (monomer) comprising i) one or more arylethynyl groups (A-functional groups), ii) one or more ring structures comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional groups), and iii) one or more ethynyl groups (C?-functional groups), characterized in that said A- and C?-functional groups are capable of reaction under cycloaddition reaction conditions with said B-functional groups to thereby form a cross-linked, polyphenylene polymer.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: December 1, 2009
    Inventor: Robert E. Hefner, Jr.
  • Multifunctional monomers containing bound mesogenic poragen forming moieties and polyarylene compositions therefrom
    Patent number: 7585928
    Abstract: A compound (monomer) comprising i) one or more dienophile groups (A-functional groups), ii) one or more ring structures comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional groups), and iii) one or more chemically bound mesogenic poragen forming moieties, characterized in that the A-functional group is capable of reaction under cycloaddition reaction conditions with the B-functional group to thereby form a cross-linked, polyphenylene polymer.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: September 8, 2009
    Assignee: Dow Global Technologies
    Inventor: Robert E. Hefner, Jr.
  • Multifunctional Ethynyl Substituted Monomers and Polyarylene Compositions Therefrom
    Publication number: 20090012193
    Abstract: A compound (monomer) comprising i) one or more arylethynyl groups (A-functional groups), ii) one or more ring structures comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional groups), and iii) one or more ethynyl groups (C?-functional groups), characterized in that said A- and C?-functional groups are capable of reaction under cycloaddition reaction conditions with said B-functional groups to thereby form a cross-linked, polyphenylene polymer.
    Type: Application
    Filed: October 19, 2004
    Publication date: January 8, 2009
    Inventor: Robert E. Hefner, JR.
  • Multifunctional unsymmetrically substituted monomers and polyarylene compositions therefrom
    Patent number: 7381850
    Abstract: A monomer suitable for use in forming low dielectric constant films in semiconductor devices comprising i) two dienophile groups (A-functional groups) attached to a single aromatic ring and ii) a second ring structure comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional group), characterized in that said single aromatic ring is directly covalently attached to one of the double bonded carbons of the B functional group or to a fused aromatic ring containing two such double bonded carbons of the B-functional group, and one A-functional group of one monomer is capable of reaction under cycloaddition reaction conditions with the B-functional group of a second monomer to thereby form a polymer.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: June 3, 2008
    Assignee: Dow Global Technologies Inc.
    Inventors: James P. Godschalx, Robert E. Hefner, Jr., Q. Jason Niu, H. Craig Silvis
  • Epoxy (urethane) (Meth)acrylate from hydroxyaliphatic bisphenol epoxy resin
    Patent number: 6613849
    Abstract: The terminal glydidyl groups of a diglycidyl ether of a hydroxyaliphatic bisphenol is optionally reacted with (meth)acrylic acid to obtain a vinyl ester. The internal hydroxyaliphatic groups are reacted with (meth)acrylic acid or cyanoacrylic acid to prepare a diglycidyl and/or (meth)acrylate-terminated (meth)acrylate or urethane acrylate.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: September 2, 2003
    Assignee: The Dow Chemical Company
    Inventors: Louis L. Walker, Robert E. Hefner, Jr., Katherine S. Clement
  • Preparation of 1,2-bis(4-hydroxyphenyl)-2-hydroxypropanes
    Patent number: 6365788
    Abstract: The present invention relates to the preparation of substituted or unsubstituted 1,2-bis(4-hydroxyphenyl)-hydroxyaliphatics such as 1,2-bis(4-hydroxyphenyl)-2-hydroxypropanes by reacting substituted or unsubstituted 1,2-bis(4-hydroxyphenyl)-halogen substituted aliphatics such as 1,2-bis(4-hydroxyphenyl)-2-chloropropanes in the presence of a base and water.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: April 2, 2002
    Assignee: The Dow Chemical Company
    Inventors: Robert E. Hefner, Jr., Katherine S. Clement, Lance L. Black, Louis L. Walker
  • Epoxy resin and epoxy di (meth)acrylate from hydroxyaliphatic bisphenol
    Patent number: 6353079
    Abstract: The present invention concerns hydroxyaliphatic functional diglycidyl ethers of bisphenols (epoxy resins); curable (thermosettable) mixtures of at least one hydroxyaliphatic functional epoxy resin and at least one curing agent and/or catalyst therefor, as well as cured (thermoset) compositions prepared therefrom; and derivatives prepared therefrom. The bisphenol precursor to the diglycidyl ether contains a hydroxyaliphatic group linkage between the two aromatic rings of the bisphenol.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: March 5, 2002
    Assignee: The Dow Chemical Company
    Inventors: Louis L. Walker, Robert E. Hefner, Jr., Katherine S. Clement
  • Process for the preparation and purification of 4,4'-dihydroxy-alpha-substituted stilbene
    Patent number: 5874645
    Abstract: A process which includes the step of heating a compound of Formula (I): ##STR1## wherein R.sup.1 is a hydroxyphenyl group or a group of Formula (II): ##STR2## and R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently in each occurrence H or a C.sub.1-10 alkyl group; to a temperature in the range of from 100.degree. C. to 400.degree. C. under reaction conditions sufficient to form one or more 4,4'-dihydroxy-alpha-substituted stilbenes.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: February 23, 1999
    Assignee: The Dow Chemical Company
    Inventors: Anthony P. Haag, Thomas A. Chamberlin, Robert E. Hefner, Jr., David A. Carr
  • Glycidyl ether compounds containing mesogenic moieties
    Patent number: 5736620
    Abstract: Epoxy resins containing rodlike mesogenic moieties are prepared from phenolic hydroxyl containing compounds which contain such moieties.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: April 7, 1998
    Assignee: The Dow Chemical Company
    Inventors: Jimmy D. Earls, Robert E. Hefner, Jr., Paul M. Puckett
  • Preparation of 4,4'-dihydroxy-'alkylstiblbene with reduced dimer formation
    Patent number: 5723692
    Abstract: Preparation of dihydroxy-.alpha.-alkylstilbenes with reduced undesirable by-products can be achieved by carrying out dehydrohalogenation of a substantially uniform dispersion of a halogenated intermediate of the desired product in the presence of water and a polar protic solvent.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: March 3, 1998
    Assignee: The Dow Chemical Company
    Inventors: Katherine S. Clement, Robert E. Hefner, Jr., Emmett L. Tasset, Louis L. Walker
  • Process for preparing and recovering 4,4'-dihydroxy-alpha-alkylstilbene or 4,4'-dihydroxy-alpha, alpha'dialkylstilbene
    Patent number: 5723693
    Abstract: A process for preparing a 4,4'-dihydroxy-alpha-alkylstilbene or 4,4'-dihydroxy-alpha,alpha'-dialkylstilbene which includes the steps of (A) reacting at a temperature of from -20.degree. C. to 20.degree. C. a mixture of: (1) at least one alpha-haloketone; (2) at least one compound containing one phenolic hydroxyl group or aromatic alkoxy group per molecule such that the mole ratio of phenolic hydroxyl group-containing or aromatic alkoxy group-containing compound(s):alpha-haloketone(s) is at least 0.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: March 3, 1998
    Assignee: The Dow Chemical Company
    Inventors: Robert E. Hefner, Jr., David A. Carr
  • Hydroxy ether polymers as thermoplastic barrier resins
    Patent number: 5686551
    Abstract: Thermoplastic hydroxy ether polymers containing inertly substituted or unsubstituted stilbene and ether linkages in the backbone chain and pendant hydroxyl moieties are prepared by reacting (a) an inertly substituted or unsubstituted dihydroxy-stilbene with (b) a diglycidyl ether and, optionally, (c) a difunctional monomer under conditions sufficient to cause the hydroxyl moieties to react with the epoxy moieties to form ether linkages and pendant hydroxyl moieties. The polymers exhibit excellent oxygen barrier properties and are useful in packaging oxygen-sensitive materials.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: November 11, 1997
    Assignee: The Dow Chemical Company
    Inventors: Jerry E. White, H. Craig Silvis, Michael N. Mang, Shari L. Kram, Robert E. Hefner, Jr.
  • Epoxy resins containing discotic mesogenic moieties
    Patent number: 5637669
    Abstract: Thermosettable resins, including epoxy resins, polythiirane resins and vinyl ester resins were prepared from compounds containing one or more discotic mesogenic moieties. The resultant thermosettable resins may be processed to provide the discotic liquid crystalline state. The thermosettable resin compositions can be employed in coating, casting, encapsulation, electronic or structural laminate or composite, filament winding, molding and the like applications.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: June 10, 1997
    Assignee: The Dow Chemical Company
    Inventors: Robert E. Hefner, Jr., Jimmy D. Earls
  • Mesogenic novolacs and resins
    Patent number: 5621071
    Abstract: The present invention discloses novolacs and thermosets thereof containing mesogenic moieties. Certain of said novolacs and thermosets thereof exhibit nonlinear optical properties upon orientation.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: April 15, 1997
    Assignee: The Dow Chemical Company
    Inventors: Mark D. Newsham, Robert E. Hefner, Jr., Jimmy D. Earls