Patents by Inventor Francis P. Baldwin
Francis P. Baldwin 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: 4703091Abstract: An improved halogenated butyl rubber wherein the polymer has a conjugated diene content of less than 0.25 mole % and a halogen content of at least 0.6 wt. %; at least 20 mole % of the halogen being in a primary allylic configuration.Type: GrantFiled: November 21, 1986Date of Patent: October 27, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis, Francis P. Baldwin
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Patent number: 4681921Abstract: Improved halogenated butyl rubbers are prepared by isomerizing the polymers so that a significant mole fraction of the halogen is in the primary allylic position. The isomerization is carried out utilizing as a catalyst either a Friedel Crafts catalyst or HBr.Type: GrantFiled: April 5, 1984Date of Patent: July 21, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Francis P. Baldwin
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Patent number: 4650832Abstract: In a process for the continuous halogenation of polymers by contacting polymer and halogenating agent in a continuous flow device in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture, by deforming and disrupting the halogenated polymer surface and injecting an inert and/or reactive gas into the halogenated polymers immediately after reaction thereby neutralizing the product. In a preferred embodiment the process is carried out in an extruder-reactor and an optional, supplementary inert and/or reactive gas scrubbing zone is included. The process is amenable to saturated and unsaturated polymers.Type: GrantFiled: October 17, 1985Date of Patent: March 17, 1987Assignee: Exxon Research & Engineering Co.Inventors: Ronald C. Kowalski, William M. Davis, Neil F. Newman, Zisis A. Foroulis, Francis P. Baldwin
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Patent number: 4634741Abstract: Improved halogenated butyl rubbers are prepared by isomerizing the polymers so that a significant mole fraction of the halogen is in the primary allylic position. The isomerization is carried out utilizing as a catalyst either a Friedel Crafts catalyst or HBr.Type: GrantFiled: December 9, 1985Date of Patent: January 6, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Francis P. Baldwin
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Patent number: 4632963Abstract: An improved halogenated butyl rubber wherein the polymer has a conjugated diene content of less than 0.25 mole % and a halogen content of at least 0.6 wt. %; at least 20 mole % of the halogen being in a primary allylic configuration.Type: GrantFiled: April 5, 1984Date of Patent: December 30, 1986Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis, Francis P. Baldwin
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Patent number: 4563506Abstract: A process for the continuous bromination of butyl rubber polymer by contacting the polymer with a brominating agent in a continuous flow device in which means are provided for disengaging reaction by-products and unreacted halogenating agents from the reaction mixture, by deforming and disrupting the brominated polymer surface and injecting a neutralizing agent into the polymer immediately after reaction thereby neutralizing the polymer, comprising contacting a polymer substantially free of acid scavengers, with the brominating agent at elevated temperatures the bromination reaction being carried out in an acid atmosphere, thereby producing a polymer having a substantial fraction of the bromine in the primary allylic position.Type: GrantFiled: October 1, 1984Date of Patent: January 7, 1986Assignee: Exxon Research & Engineering Co.Inventors: Ronald C. Kowalski, William M. Davis, Neil F. Newman, Zisis A. Foroulis, Francis P. Baldwin
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Patent number: 4554326Abstract: In a process for the continuous halogenation of polymers by contacting polymer and halogenating agent in a continuous flow device in which the polymer and halogenating agent are subjected to deformation during reaction and in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture, a significant process improvement is realized by injecting an inert gas into the halogenated polymers immediately after reaction in order to neutralize the product. In a preferred embodiment the process is carried out in an extruder-reactor and an optional, supplementary inert gas scrubbing zone is included. The process is amenable to saturated and unsaturated polymers.Type: GrantFiled: April 1, 1983Date of Patent: November 19, 1985Assignee: Exxon Research & Engineering Co.Inventors: Ronald C. Kowalski, William M. Davis, Neil F. Newman, Z. Andrew Foroulis, Francis P. Baldwin
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Patent number: 4548995Abstract: In a process for the continuous halogenation of polymers by contacting polymer and halogenating agent in a continuous flow device in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture, by deforming and disrupting the halogenated polymer surface and injecting an inert gas into the halogenated polymers immediately after reaction thereby neutralizing the product. In a preferred embodiment the process is carried out in an extruder-reactor and an optional, supplementary inert gas scrubbing zone is included. The process is amenable to saturated and unsaturated polymers.Type: GrantFiled: September 17, 1984Date of Patent: October 22, 1985Assignee: Exxon Research & Engineering Co.Inventors: Ronald C. Kowalski, William M. Davis, Neil F. Newman, Z. Andrew Foroulis, Francis P. Baldwin
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Patent number: 4319061Abstract: Terminally-functional saturated hydrocarbon low molecular weight liquid polymers are prepared by cationic polymerization of a 1-alkene containing at least one tertiary or phenyl substituted carbon in the presence of a transfer agent containing a benzylic or tertiary halogen and at least one primary or secondary halogen wherein the 1-alkene is capable of being polymerized by a Friedel Crafts catalyst.Type: GrantFiled: January 5, 1981Date of Patent: March 9, 1982Assignee: Exxon Research and Engineering Co.Inventors: Gary Ver Strate, Francis P. Baldwin
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Patent number: 4278822Abstract: Terminally-functional saturated hydrocarbon low molecular weight liquid polymers are prepared by cationic polymerization of a 1-alkene containing at least one tertiary or phenyl substituted carbon in the presence of a transfer agent containing a benzylic or tertiary halogen and at least one primary or secondary halogen wherein the 1-alkene is capable of being polymerized by a Friedel Crafts catalyst.Type: GrantFiled: November 7, 1977Date of Patent: July 14, 1981Assignee: Exxon Research & Engineering Co.Inventors: Gary Ver Strate, Francis P. Baldwin
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Patent number: 4160759Abstract: Reinforced molding compounds are disclosed comprising elastomer modified thermosetting unsaturated polyesters which include conjugated diene butyl rubber elastomer copolymer dispersed therein, and which further include inorganic particulate filler material and a free radical polymerizable monomer. Preferably, they also include a thermoplastic component, and such compounds have improved surface appearance, toughness and impact strength as demonstrated by the molded articles produced from such a low profile system.Type: GrantFiled: January 30, 1978Date of Patent: July 10, 1979Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, Francis P. Baldwin
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Patent number: 4068051Abstract: Improved processes for the dehydrohalogenation of halogenated butyl rubber in order to prepare a butyl rubber having randomly distributed sites of conjugated unsaturation are disclosed. Such processes, which include the contacting of a solution of halogenated butyl rubber with a soluble metal carboxylate, a soluble carboxylic acid, and an oxide or hydroxide of a metal selected from Groups Ia and IIa of the Periodic Table, are carried out in a reaction zone which is maintained substantially free of free water vapor. Preferably, excess amounts of hydrophilic reagents are added to the reaction zone or in the alternative the reaction zone is purged with a drying gas.Type: GrantFiled: November 13, 1975Date of Patent: January 10, 1978Assignee: Exxon Research and Engineering CompanyInventors: Francis P. Baldwin, James A. Rae
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Patent number: 4048258Abstract: Disclosed is a method of preparing a moisture curable elastomer by reacting an elastomer containing randomly distributed sites of conjugated olefinic unsaturation with a cyclic unsaturated anhydride then blending the reaction product with a polyvalent metal compound and, optionally, a basic hydrolysis catalyst.Type: GrantFiled: April 23, 1976Date of Patent: September 13, 1977Assignee: Exxon Research and Engineering CompanyInventors: Francis P. Baldwin, James A. Rae, Gary Ver Strate
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Patent number: 4039506Abstract: Blends of 5 to 95 wt. % conjugated diene-containing butyl rubber with 95 to 25 wt. % halobutyl or butyl rubber are capable of higher carbon black loading and have faster cure times, unusually high tensile strength and improved green strength. The blends may be cured with dienophilic compounds or sulfur-based cure packages.Type: GrantFiled: March 28, 1975Date of Patent: August 2, 1977Assignee: Exxon Research and Engineering CompanyInventors: Albert M. Gessler, Francis P. Baldwin
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Patent number: 4026966Abstract: Disclosed is a method for crosslinking elastomers containing randomly distributed sites of conjugated olefinic unsaturation of which the crosslinks are comprised of chains of free radical polymerizable monomers.Type: GrantFiled: May 15, 1975Date of Patent: May 31, 1977Assignee: Exxon Research and Engineering CompanyInventors: Francis P. Baldwin, Alberto Malatesta
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Patent number: 4014852Abstract: Blends of 5 to 95 wt. % conjugated diene-containing butyl rubber with 95 to 5 wt. % halobutyl or butyl rubber are capable of higher carbon black loading and have faster cure times, unusually high tensile strength and improved green strength. The blends may be cured with dienophilic compounds or sulfur-based cure packages.Type: GrantFiled: March 28, 1975Date of Patent: March 29, 1977Assignee: Exxon Research and Engineering CompanyInventors: Albert M. Gessler, Francis P. Baldwin
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Patent number: 3983062Abstract: A process for preparing latices in ionomeric form from copolymers of an isoolefin containing from 4 to 7 carbon atoms and a conjugated multiolefin containing from 4 to 14 carbon atoms, where a major portion of said conjugated multiolefin has conjugated diene unsaturation, is disclosed. The process principally comprises forming an adduct of conjugated diene butyl rubber with a dienophile capable of implanting carboxylic acid functionality on the polymer such as maleic anhydride, emulsifying the adduct thus formed, and neutralizing the resulting emulsion with a suitable base. Highly improved ionomeric latices are also disclosed, having an average particle size of less than about 1 micron, average solids contents easily adjusted from between about 5 to 70 weight percent solids, and having a pH, depending on the emulsifier used, of from 3 to 12. Films cast from these latices have an improved tensile at break of greater than about 2500 psi.Type: GrantFiled: August 9, 1974Date of Patent: September 28, 1976Assignee: Exxon Research and Engineering CompanyInventors: Francis P. Baldwin, Alberto Malatesta, Charles P. O'Farrell
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Patent number: 3968076Abstract: Blends of 5 to 95 wt. % conjugated diene-containing butyl rubber with 95 to 5 wt. % halobutyl or butyl rubber are capable of higher carbon black loading and have faster cure times, unusually high tensile strength and improved green strength. The blends may be cured with dienophilic compounds or sulfur-based cure packages.Type: GrantFiled: June 2, 1975Date of Patent: July 6, 1976Assignee: Exxon Research and Engineering CompanyInventors: Albert M. Gessler, Francis P. Baldwin
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Patent number: 3968185Abstract: Disclosed is a method for crosslinking elastomers containing randomly distributed sites of conjugated olefinic unsaturation of which the crosslinks are comprised of chains of free radical polymerizable monomers.Type: GrantFiled: December 9, 1974Date of Patent: July 6, 1976Inventors: Francis P. Baldwin, Alberto Malatesta
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Patent number: 3965213Abstract: Dehydrohalogenation of halogenated butyl to produce a butyl rubber having conjugated double bonds in the linear backbone. The composition is disclosed as having the predominant structure: ##EQU1## where n + 1 represent the number of isoolefin units incorporated in the butyl rubber polymer backbone, and m represents the number of conjugated diolefin units present, substantially as isolated units. The composition is prepared by contacting a solution of halogenated butyl rubber with: (1) a soluble metal carboxylate, where the metal is selected from the metals of Groups Ib, IIb, IVa and VIII of the Periodic Table; (2) a soluble carboxylic acid; and (3) an oxide or hydroxide of a metal selected from the metals of Groups Ia or IIa of the Periodic Table.Type: GrantFiled: April 30, 1974Date of Patent: June 22, 1976Assignee: Exxon Research and Engineering CompanyInventors: Francis P. Baldwin, Alberto Malatesta