Patents by Inventor David A. Babb
David A. Babb 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: 6552129Abstract: The invention includes a process of reacting a poly(sulfonyl azide) with a polymer comprising steps (a) forming a first admixture of a first amount of a first polymer or in a liquid which does not require removal from the polymer and a poly(sulfonyl azide); (b) then forming a second admixture of the first admixture with a second amount of at least one second polymer; and (c) heating the second admixture at least to the decomposition temperature of the coupling agent for a time sufficient to result in coupling of polymer chains. The invention further includes all compositions obtainable by processes of the invention as well as blends of those compositions with one or more polymers of compositions different from the first or second polymer or the product of a process of the invention.Type: GrantFiled: December 10, 2001Date of Patent: April 22, 2003Assignee: Dow Global Technologies Inc.Inventors: David A. Babb, Che-I Kao, Wendy D. Hoenig, Michael E. Rowland, Clark H. Cummins, H. Craig Silvis, Michael J. Mullins, Thoi H. Ho
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Publication number: 20020091199Abstract: The invention includes a process of reacting a poly(sulfonyl azide) with a polymer comprising steps (a) forming a first admixture, hereinafter referred to as a concentrate, of a first amount of a first polymer or in a liquid which does not require removal from the polymer, hereinafter diluent, and a poly(sulfonyl azide); (b) then forming a second admixture of the first admixture with a second amount of at least one second polymer, hereinafter second polymer composition; and (c) heating the second admixture at least to the decomposition temperature of the coupling agent for a time sufficient to result in coupling of polymer chains. The diluent is preferably a non-volatile, non-polar compound such as mineral oil in which the poly(sulfonyl azide) is sufficiently miscible to disperse the poly(sulfonyl azide) in the second polymer, more preferably a liquid at room temperature or low melting solid at room temperature, that is has a melting point below about 50° C.Type: ApplicationFiled: December 10, 2001Publication date: July 11, 2002Inventors: David A. Babb, Che-I Kao, Wendy D. Hoenig, Michael E. Rowland, Clark H. Cummins, H. Craig Silvis, Michael J. Mullins, Thoi H. Ho
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Patent number: 6359073Abstract: The invention includes a process of reacting a poly(sulfonyl azide) with a polymer comprising steps (a) forming a first admixture of a first amount of a first polymer or in a liquid which does not require removal from the polymer and a poly(sulfonyl azide); (b) then forming a second admixture of the first admixture with a second amount of at least one second polymer; and (c) heating the second admixture at lest to the decomposition temperature of the coupling agent for a time sufficient to result in coupling of polymer chains. The invention further includes all compositions obtainable by processes of the invention as well as blends of those compositions with one or more polymers of compositions different from the first or second polymer or the product of a process of the invention.Type: GrantFiled: October 23, 2000Date of Patent: March 19, 2002Assignee: The Dow Chemical CompanyInventors: David A. Babb, Che-I Kao, Wendy D. Hoenig, Michael E. Rowland, Clark H. Cummins, H. Craig Silvis, Michael J. Mullins, Thoi H. Ho
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Publication number: 20020032120Abstract: A compound useful as a cocatalyst or cocatalyst component, especially for use as an addition polymerization catalyst compound, corresponding to the formula:Type: ApplicationFiled: July 12, 2001Publication date: March 14, 2002Inventors: David A. Babb, Richard E. Campbell, David R. Neithamer, Grant B. Jacobsen, Edmund M. Carnahan
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Patent number: 6325956Abstract: The invention includes a process comprising (a) forming a polymeric admixture including at least one polyolefin which has been prepared using a single site catalyst and at least a crosslinking amount of at least one poly(sulfonyl azide) crosslinking agent; (b) shaping the resulting admixture; and (c) heating the resulting shaped admixture to a temperature at least the decomposition temperature of the crosslinking agent. The steps take place in any sequence and optionally include substeps. The single site catalyst is preferably a constrained geometry or metallocene catalyst, but optionally another transition metal catalyst which is not a traditional Ziegler Natta Ti/MgCl2 catalyst such as a vanadium catalyst. The invention further includes all compositions obtainable by the process of the invention as well as all articles formed from these compositions.Type: GrantFiled: August 26, 1998Date of Patent: December 4, 2001Assignee: The Dow Chemical CompanyInventors: Bharat I. Chaudhary, Thoi H. Ho, Seema V. Karande, Che-I. Kao, Robert H. Terbrueggen, David A. Babb, Clark H. Cummins, Michael J. Mullins, H. Craig Silvis
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Patent number: 6252001Abstract: Compounds of ethynyl aromatic compounds form polymers which have high thermal stability. The monomers are useful for coating a wide variety of substances such as dielectric coatings where high thermal resistance is desirable including electronic components such as computer chips.Type: GrantFiled: January 13, 2000Date of Patent: June 26, 2001Assignee: The Dow Chemical CompanyInventors: David A. Babb, Dennis W. Smith, Jr., Steven J. Martin, James P. Godschalx
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Publication number: 20010002075Abstract: The invention includes a process comprising (a) forming a polymeric admixture including at least one polyolefin which has been prepared using a single site catalyst and at least a crosslinking amount of at least one poly(sulfonyl azide) crosslinking agent; (b) shaping the resulting admixture; and (c) heating the resulting shaped admixture to a temperature at least the decomposition temperature of the crosslinking agent. The steps take place in any sequence and optionally include substeps. The single site catalyst is preferably a constrained geometry or metallocene catalyst, but optionally another transition metal catalyst which is not a traditional Ziegler Natta Ti/MgCl2 catalyst such as a vanadium catalyst.Type: ApplicationFiled: August 26, 1998Publication date: May 31, 2001Inventors: BHARAT CHAUDHARY, THOI H. HO, SEEMA KARANDE, CHE-I KAO, ROBERT H. TERBRUEGGEN, DAVID A. BABB, CLARK H. CUMMINS, MICHAEL J. MULLINS, H. CRAIG SILVIS
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Patent number: 6143829Abstract: The invention includes a process of reacting a poly(sulfonyl azide) with a polymer comprising steps (a) forming a first admixture, hereinafter referred to as a concentrate, of a first amount of a first polymer or in a liquid which does not require removal from the polymer, hereinafter diluent, and a poly(sulfonyl azide); (b) then forming a second admixture of the first admixture with a second amount of at least one second polymer, hereinafter second polymer composition; and (c) heating the second admixture at least to the decomposition temperature of the coupling agent for a time sufficient to result in coupling of polymer chains. The diluent is preferably a non-volatile, non-polar compound such as mineral oil in which the poly(sulfonyl azide) is sufficiently miscible to disperse the poly(sulfonyl azide) in the second polymer.Type: GrantFiled: August 13, 1998Date of Patent: November 7, 2000Assignee: The Dow Chemical CompanyInventors: David A. Babb, Wendy D. Hoenig, Che-I Kao, Michael E. Rowland, Clark H. Cummins, Michael J. Mullins, H. Craig Silvis, Thoi H. Ho
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Patent number: 6121495Abstract: Compounds of ethynyl aromatic compounds form polymers which have high thermal stability. The monomers are useful for coating a wide variety of substances such as dielectric coatings where high thermal resistance is desirable including electronic components such as computer chips.Type: GrantFiled: September 12, 1996Date of Patent: September 19, 2000Assignee: The Dow Chemical CompanyInventors: David A. Babb, Dennis W. Smith, Jr., Steven J. Martin, James P. Godschalx
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Patent number: 5730922Abstract: A laminate has at least two layers, at least one of which comprises a polymer having more than one perfluorocyclobutane group. Such polymers impart qualities of environmental or protection, chemical and solvent resistance, hydrolytic stability, lubricity, low dielectric, hydrostatic stability, weatherability, flame resistance, chemical resistance, hydrolytic stability, lubricity, environmental protection, scratch resistance, solvent resistance, surface passivation, water repellancy, lower surface refractive index, lower surface coefficient of friction, fluid barrier properties, oil repellancy, thermal stability, and/or reduced moisture pick-up. Additionally, the coatings are optically clear, easy to apply either neat, in a solvent or otherwise, have relatively low cure temperatures for their temperature resistance, and exhibit insulating and planarizing capabilities.Type: GrantFiled: July 12, 1996Date of Patent: March 24, 1998Assignee: The Dow Chemical CompanyInventors: David A. Babb, W. Frank Richey, Katherine Clement, Edward R. Peterson, Alvin P. Kennedy, Zdravko Jezic, Larry D. Bratton, Eckel Lan, Donald J. Perettie
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Patent number: 5540997Abstract: An alignment layer for a liquid crystal display device is described. The alignment layer comprises a copolymer of a thermoset polymer containing perfluorinated cyclobutane rings and a thermoplastic polymer containing perfluorinated cylcobutane rings, or a blend of thermoset and thermoplastic homopolymers or copolymers containing perfluorinated cyclobutane rings.This copolymer or blend provides an alignment layer with a cure temperature of less than 250.degree. C., a low dielectric, and a low moisture content. The resultant alignment layer can also provide surface tilt angles suitable for supertwisted nematic-liquid crystal displays.Type: GrantFiled: March 13, 1995Date of Patent: July 30, 1996Assignee: The Dow Chemical CompanyInventors: Donald J. Perettie, Benjamin M. DeKoven, David A. Babb
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Patent number: 5489623Abstract: A polymer has at least one photoactive site and more than one perfluorocyclobutane group. New monomers containing photoactive sites or photoactive precursors and at least one perfluorovinyl group are useful for making such polymers. Processes of making such polymers and the monomers from which they are made are disclosed. The polymers are useful in coatings, photoresists, and the like.Type: GrantFiled: April 25, 1995Date of Patent: February 6, 1996Assignee: The Dow Chemical CompanyInventors: David A. Babb, W. Frank Richey, Katherine S. Clement, Eric S. Moyer, Marius W. Sorenson
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Patent number: 5426164Abstract: A polymer has at least one photoactive site and more than one perfluorocyclobutane group. New monomers containing photoactive sites or photoactive precursors and at least one perfluorovinyl group are useful for making such polymers. Processes of making such polymers and the monomers from which they are made are disclosed. The polymers are useful in coatings, photoresists, and the like.Type: GrantFiled: December 24, 1992Date of Patent: June 20, 1995Assignee: The Dow Chemical CompanyInventors: David A. Babb, W. Frank Richey, Katherine S. Clement, Eric S. Moyer, Marius W. Sorenson
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Patent number: 5364917Abstract: A process for preparing a polymer having perfluorocyclobutane rings by the steps of (a) contacting monomers having aromatic polyester, aromatic polyamide, or polyimide groups or combination thereof, at least two dimerizable perfluorovinyl groups; and (b) exposing the monomers to sufficient heat and for a sufficient time that a polymer containing perfluorocyclobutane rings is formed. Chain extending oligomers of polymers having poor processing characteristics by this process results in polymers which are more easily processed. For instance, perfluorocyclobutane groups formed in an extruder to chain lengthen polyimide oligomers, in effect, render polyimides extrudable. The polymer formed by the method preferably has polyimide groups. New monomers and polymers having imide and perfluorovinyl or perfluorocyclobutane structures, respectively, are prepared.Type: GrantFiled: December 1, 1993Date of Patent: November 15, 1994Assignee: The Dow Chemical CompanyInventors: David A. Babb, W. Frank Richey, Katherine S. Clement, Bobby R. Ezzell
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Patent number: 5364547Abstract: A new lubricant comprises at least one compound having a perfluorocyclobutane group, preferably a perfluorovinyl aryl ether. The lubricant is conveniently applied from solvents which are not chlorofluorocarbons and is effective at high temperatures e.g., in engines and for magnetic media, either internally or topically.Type: GrantFiled: April 26, 1993Date of Patent: November 15, 1994Assignee: The Dow Chemical CompanyInventors: David A. Babb, Ted A. Morgan
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Patent number: 5246782Abstract: A laminate has at least two layers, at least one of which comprises a polymer having more than one perfluorocyclobutane group. Such polymers impart qualities of enviornmental or protection, chemical and solvent resistance, hydrolytic stability, lubricity, low dielectric, hydrostatic stability, weatherability, flame resistance, chemical resistance, hydrolytic stability, lubricity, environmental protection, scratch resistance, solvent resistance, surface passivation, water repellancy, lower surface refractive index, lower surface coefficient of friction, fluid barrier properties, oil repellancy, thermal stability, and/or reduced moisture pick-up. Additionally, the coatings are optically clear, easy to apply either neat, in a solvent or otherwise, have relatively low cure temperatures for their temperature resistance, and exhibit insulating and planarizing capabilities.Type: GrantFiled: December 10, 1990Date of Patent: September 21, 1993Assignee: The Dow Chemical CompanyInventors: Alvin P. Kennedy, Larry D. Bratton, Zdravko Jezie, Eckel R. Lane, Donald J. Perettie, W. Frank Richey, David A. Babb, Katherine S. Clement
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Patent number: 5210265Abstract: Novel compounds have at least one perfluorocyclobutane ring and at least two functional groups suitable for forming condensation polymers. Preferably the compounds have a structures represented by Formula II: ##STR1## wherein R and R' independently represent optionally inertly substituted groups: X and X' represent any molecular structures which link R and R' with the perfluorocyclobutane ring; n and n' are the number of G and G' groups, respectively: and G and G' independently represent any reactive functional groups or any groups convertible into reactive functional groups. The compounds are preferably prepared by a process of thermally dimerizing trifluorovinyl compound to form a compounds of Formula IG.sub.n -R-X-CF.dbd.CF.sub.2wherein G represents G or G' in Formula II: X represents X or X' of Formula II: and n represents n or n' of Formula II, to form a compound having a perfluorocyclobutane group.Type: GrantFiled: March 12, 1991Date of Patent: May 11, 1993Assignee: The Dow Chemical CompanyInventors: Katherine S. Clement, David A. Babb, Bobby R. Ezzell
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Patent number: 5206422Abstract: A process for the preparation of fluorinated carbonyl compounds from a fluorinated methyl or ethyl ether using tin tetrachloride as a catalyst. The fluorinated ether is contacted with the tin tetrachloride catalyst at a temperature between 0.degree. C. and 250.degree. C.Type: GrantFiled: October 11, 1991Date of Patent: April 27, 1993Assignee: The Dow Chemical CompanyInventor: David A. Babb
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Patent number: 5198513Abstract: A compound having at least one perfluorovinyl group and at least one functional group is suitable for reacting with and/or forming polymers. The compound is preferably of Formula I:(G)n-R-(X--CF.dbd.CF.sub.2).sub.mwherein R represents an optionally substituted hydrocarbyl group, X represents any group which links R and a perfluorovinyl group; n is the number of G groups, m is the number of (XCF.dbd.CF.sub.2) groups; and G represents any reactive functional group or a group convertible into a reactive functional groups.A process for preparing a compound of Formula I comprises the steps of:(a) preparing a 2-halotetrafluoro compound of the Formula III:(Q--CF.sub.2 --CF.sub.2 -X).sub.m -R-(G").sub.Type: GrantFiled: March 12, 1991Date of Patent: March 30, 1993Assignee: The Dow Chemical CompanyInventors: Katherine S. Clement, David A. Babb, Bobby R. Ezzell, W. Frank Richey
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Patent number: 5162468Abstract: Compounds have a structure represented by Formula I:CF.sub.2 .dbd.CF--X--R--(X--CF.dbd.CF.sub.2).sub.mwherein R represents an unsubstituted or inertly substituted hydrocarbyl group; each X is independently selected from the group consisting of groups having at least one non-carbon atom between R and --CF.dbd.CF.sub.2 ; and m is an integer of from 1 to about 3. Polymers formed from such compounds are also prepared. The compounds are preferably prepared by a method by a process comprising the steps of:(a) forming a salt having anion corresponding to a compound of Formula II:HX--R--(XH.sub.m);wherein X, R and m are as defined for Formula I:(b) reacting the salt with a 1,2-dihalo-1,1,2,2-tetrafluoroethane wherein the halo groups are iodine, bromine, chlorine or mixtures thereof, at least one halo group being bromine or iodine, to form a compound of Formula III:Z--CF.sub.2 CF.sub.2 --X--R--(X--CF.sub.2 CF.sub.2 --Z).sub.Type: GrantFiled: March 12, 1991Date of Patent: November 10, 1992Assignee: The Dow Chemical CompanyInventors: David A. Babb, Katherine S. Clement, Bobby R. Ezzell