Solid Polymer Or Sicp Derived From Reactant Having Halo-c(=o)-halo,halo C(=o)-o, Or -o-c(=o)-o-group Patents (Class 522/163)
-
Patent number: 6348516Abstract: Process for using microwave irradiation to prepare solutions of polymers functionalized with acid groups The invention relates to a process for preparing aqueous, hydrous and anhydrous solutions of polymers functionalized with acid groups, which comprises using microwave radiation to supply the heat required to prepare the solution. The solutions are suitable as a starting material for producing gas diffusion electrodes, fuel cells and polymer-electrolyte-stabilized platinum nanoparticles.Type: GrantFiled: July 6, 2000Date of Patent: February 19, 2002Assignee: Celanese Ventures GmbHInventors: Thomas Soczka-Guth, Helmut Witteler, Gregor Deckers, Georg Frank, Kilian Brehl, Jürgen Lenze, Harald Bönsel, Rüdiger Knauf
-
Patent number: 6323301Abstract: Disclosed is a composition comprising a polymer with a weight average molecular weight of from about 1,000 to about 100,000, said polymer containing at least some monomer repeat units with a first, photosensitivity-imparting substituent which enables crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer also containing a second, thermal sensitivity-imparting substituent which enables further crosslinking or chain extension of the polymer upon exposure to temperatures of about 140° C.Type: GrantFiled: August 10, 2000Date of Patent: November 27, 2001Assignee: Xerox CorporationInventors: Thomas W. Smith, Timothy J. Fuller, Ram S. Narang, David J. Luca
-
Publication number: 20010031798Abstract: In one aspect the invention provides an energy efficient polymerization method comprising irradiating a polymerizable composition and a photoinitiator with a source of essentially monochromatic radiation where the photoinitiator and the wavelength of the radiation source are selected such that the extinction coefficient of the photoinitiator at the peak wavelength of the source is greater than about 1000 M−1 cm−1 and such that the photoinitiator absorbs at least two percent of the actinic radiation incident on the coating.Type: ApplicationFiled: February 6, 2001Publication date: October 18, 2001Applicant: 3M Innovative Properties CompanyInventors: Robin E. Wright, George F. Vesley
-
Patent number: 6273543Abstract: Disclosed is a composition which comprises a polymer containing at least some monomer repeat units with water-solubility- or water-dispersability-imparting substituents and at least some monomer repeat units with photosensitivity-imparting substituents which enable crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer being of the formula wherein x is an integer of 0 or 1, A is one of several specified groups, such as B is one of several specified groups, such as or mixtures thereof, and n is an integer representing the number of repeating monomer units. In one embodiment, a single functional group imparts both photosensitivity and water solubility or dispersability to the polymer. In another embodiment, a first functional group imparts photosensitivity to the polymer and a second functional group imparts water solubility or dispersability to the polymer.Type: GrantFiled: February 9, 1999Date of Patent: August 14, 2001Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller
-
Patent number: 6235353Abstract: Production of a dielectric coating on a substrate whereby a poly(arylene ethers) or fluorinated poly(arylene ethers) layer is cured by exposure to electron beam radiation. A wide area electron beam is used which causes chemical reactions to occur in the polymer structure which are thought to cause crosslinks between polymer chains. The crosslinks lead to higher mechanical strength and higher glass transition temperature, lower thermal expansion coefficient, greater thermal-chemical stability and greater resistance to aggressive organic solvents. The polymer layer may also be optionally heated, thermally annealed, and/or exposed to UV actinic light.Type: GrantFiled: February 5, 1999Date of Patent: May 22, 2001Assignee: AlliedSignal Inc.Inventors: James S. Drage, Jingjun Yang, Dong Kyu Choi
-
Patent number: 6228900Abstract: The present invention discloses methods for enhancing the wear-resistance of polymers, the resulting polymers, and in vivo implants made from such polymers. One aspect of this invention presents a method whereby a polymer is irradiated, preferably with gamma radiation, then thermally treated, such as by remelting of annealing. The resulting polymeric composition preferably has its most oxidized surface layer removed. Another aspect of the invention presents a general method for optimizing the wear resistance and desirable physical and/or chemical properties of a polymer by crosslinking and thermally treating it. The resulting polymeric compositions is wear-resistant and may be fabricated into an in vivo implant.Type: GrantFiled: January 6, 1999Date of Patent: May 8, 2001Assignee: The Orthopaedic Hospital and University of Southern CaliforniaInventors: Fu-Wen Shen, Harry A. McKellop, Ronald Salovey
-
Patent number: 6203143Abstract: Disclosed is a composition which comprises (a) a polymer containing at least some monomer repeat units with photosensitivity-imparting substituents which enable crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer being of the formula wherein x is an integer of 0 or 1, A is one of several specified groups, such as B is one of several specified groups, such as or mixtures thereof, and n is an integer representing the number of repeating monomer units, wherein said photosensitivity-imparting substituents are hydroxyalkyl groups; (b) at least one member selected from the group consisting of photoinitiators and sensitizers; and (c) an optional solvent. Also disclosed are processes for preparing the above polymers and methods of preparing thermal ink jet printheads containing the above polymers.Type: GrantFiled: September 23, 1998Date of Patent: March 20, 2001Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller
-
Patent number: 6193850Abstract: The present invention provides a method for directly determining the concentration of a target species, such as Fries product, in a composition comprising aromatic carbonate chain units. In an exemplary embodiment, the method includes the steps of irradiating a portion of the composition with electromagnetic radiation at an excitation wavelength sufficient to cause the target species to emit a fluorescence spectrum; detecting at least a portion of the fluorescence spectrum; and determining the concentration of the target species from the fluorescence spectrum. In addition to detecting Fries product in formed polycarbonate materials, the method can also be utilized to directly determine the concentration of a target species in parallel polycarbonate reactor systems.Type: GrantFiled: September 20, 1999Date of Patent: February 27, 2001Assignee: General Electric CompanyInventors: Radislav Alexandrovich Potyrailo, John Patrick Lemmon
-
Patent number: 6190603Abstract: A novel process for producing mouldings, especially contact lenses, is described, comprising the following steps: a) introducing into a mould a prepolymer containing photo crosslinkable groups that is liquid at room temperature or is readily meltable and is substantially free of solvents; b) initiating the photo cross-linking for a period of <20 minutes; c) opening the mould, so that the moulding can be removed for the mould. In accordance with the process according to the invention, it is possible especially to produce contact lenses having valuable properties.Type: GrantFiled: January 22, 1999Date of Patent: February 20, 2001Assignee: Novartis AGInventors: Bettina Steinmann, Friedrich Stockinger
-
Patent number: 6187512Abstract: Disclosed is a process which comprises reacting a polymer of the general formula wherein x is an integer of 0 or 1, A is one of several specified groups, such as B is one of several specified groups, such as or mixtures thereof, and n is an integer representing the number of repeating monomer units, with a halomethyl alkyl ether, an acetyl halide, and methanol in the presence of a halogen-containing Lewis acid catalyst, thereby forming a halomethylated polymer.Type: GrantFiled: May 17, 1999Date of Patent: February 13, 2001Assignee: Xerox CorporationInventors: Daniel A. Foucher, Nancy C. Stoffel, Roger T. Janezic, Thomas W. Smith, David J. Luca, Bidan Zhang
-
Patent number: 6184263Abstract: A composition which comprises a mixture of (A) a first component comprising a polymer, at least some of the monomer repeat units of which have at least one photosensitivity-imparting group thereon, said polymer having a first degree of photosensitivity-imparting group substitution and being of the formulae specified in the claims, and (B) a second component which comprises either (1) a polymer having a second degree of photosensitivity-imparting group substitution lower than the first degree of photosensitivity-imparting group substitution, wherein said second degree of photosensitivity-imparting group substitution may be zero, wherein the mixture of the first component and the second component has a third degree of photosensitivity-imparting group substitution which is lower than the first degree of photosensitivity-imparting group substitution and higher than the second degree of photosensitivity-imparting group substitution, or (2) a reactive diluent having at least one photosensitivity-imparting group perType: GrantFiled: December 23, 1998Date of Patent: February 6, 2001Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller
-
Patent number: 6151042Abstract: Disclosed is a composition comprising a polymer with a weight average molecular weight of from about 1,000 to about 100,000, said polymer containing at least some monomer repeat units with a first, photosensitivity-imparting substituent which enables crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer also containing a second, thermal sensitivity-imparting substituent which enables further crosslinking or chain extension of the polymer upon exposure to temperatures of about 140.degree. C.Type: GrantFiled: December 23, 1998Date of Patent: November 21, 2000Assignee: Xerox CorporationInventors: Thomas W. Smith, Timothy J. Fuller, Ram S. Narang, David J. Luca
-
Patent number: 6124372Abstract: Disclosed is a composition comprising a polymer with a weight average molecular weight of from about 1,000 to about 100,000, said polymer containing at least some monomer repeat units with a first, photosensitivity-imparting substituent which enables crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer also containing a second, thermal sensitivity-imparting substituent which enables further crosslinking or chain extension of the polymer upon exposure to temperatures of about 140.degree. C.Type: GrantFiled: August 29, 1996Date of Patent: September 26, 2000Assignee: Xerox CorporationInventors: Thomas W. Smith, Timothy J. Fuller, Ram S. Narang, David J. Luca
-
Patent number: 6090453Abstract: Disclosed is a process which comprises the steps of (a) providing a polymer containing at least some monomer repeat units with halomethyl group substituents which enable crosslinking or chain extension of the polymer upon exposure to a radiation source which is electron beam radiation, x-ray radiation, or deep ultraviolet radiation, said polymer being of the formula ##STR1## wherein x is an integer of 0 or 1, A is one of several groups, as specified in the claims, and B is one of several groups, as specified in the claims or mixtures thereof, and n is an integer representing the number of repeating monomer units, and (b) causing the polymer to become crosslinked or chain extended through the photosensitivity-imparting groups. Also disclosed is a process for preparing a thermal ink jet printhead by the aforementioned curing process.Type: GrantFiled: September 30, 1998Date of Patent: July 18, 2000Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller
-
Patent number: 6087414Abstract: Disclosed is a process which comprises reacting a polymer of the general formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3##Type: GrantFiled: December 23, 1998Date of Patent: July 11, 2000Assignee: Xerox CorporationInventors: Timothy J. Fuller, Ram S. Narang, Thomas W. Smith, David J. Luca, Raymond K. Crandall
-
Patent number: 6022095Abstract: Disclosed is an improved composition comprising a photopatternable polymer containing at least some monomer repeat units with photosensitivity-imparting substituents, said photopatternable polymer being of the general formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3## or mixtures thereof, and n is an integer representing the number of repeating monomer units. Also disclosed is a process for preparing a thermal ink jet printhead with the aforementioned polymer and a thermal ink jet printhead containing therein a layer of a crosslinked or chain extended polymer of the above formula.Type: GrantFiled: December 23, 1998Date of Patent: February 8, 2000Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller, Thomas W. Smith, David J. Luca, Ralph A. Mosher
-
Patent number: 6007877Abstract: Disclosed is a composition which comprises a polymer containing at least some monomer repeat units with water-solubility- or water-dispersability-imparting substituents and at least some monomer repeat units with photosensitivity-imparting substituents which enable crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer being of the formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3## or mixtures thereof, and n is an integer representing the number of repeating monomer units. In one embodiment, a single functional group imparts both photosensitivity and water solubility or dispersability to the polymer. In another embodiment, a first functional group imparts photosensitivity to the polymer and a second functional group imparts water solubility or dispersability to the polymer.Type: GrantFiled: August 29, 1996Date of Patent: December 28, 1999Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller
-
Patent number: 5994425Abstract: Disclosed is an improved composition comprising a photopatternable polymer containing at least some monomer repeat units with photosensitivity-imparting substituents, said photopatternable polymer being of the general formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3## or mixtures thereof, and n is an integer representing the number of repeating monomer units. Also disclosed is a process for preparing a thermal ink jet printhead with the aforementioned polymer and a thermal ink jet printhead containing therein a layer of a crosslinked or chain extended polymer of the above formula.Type: GrantFiled: August 29, 1996Date of Patent: November 30, 1999Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller, Thomas W. Smith, David J. Luca, Ralph A. Mosher
-
Patent number: 5965629Abstract: A process for modifying the surfaces of a polymer, ceramic, ITO or glass by irradiating energized ion particles onto the surfaces of the polymer, ceramic, ITO or glass, while blowing a reactive gas directly over the surface of the polymer, ceramic, ITO or glass under a vacuum condition, to decrease the wetting angle of the surface. The process can be widely used in the fields of polymers because it provides effects of increasing the spreading of aqueous dyestuffs, increasing adhesive strength with other materials and inhibition of light scattering by decreasing the wetting angle of the material surface.Type: GrantFiled: April 11, 1997Date of Patent: October 12, 1999Assignee: Korea Institute of Science and TechnologyInventors: Hyung Jin Jung, Seok Keun Koh, Won Kook Choi, Kyong Sop Han, Sik Sang Gam
-
Patent number: 5958995Abstract: Disclosed is a composition for preparing a thermal ink jet printhead which comprises a mixture of (A) a polymer, some monomer repeat units of which have at least one photosensitivity-imparting group thereon, said polymer having a first degree of photosensitivity-imparting group substitution measured in milliequivalents photosensitivity-imparting group per gram either (1) a polymer having a second degree of photosensitivity-imparting group substitution measured in milliequivalents of photosensitivity-imparting group per gram lower than the first degree of photosensitivity-imparting group substitution, wherein said second degree of photosensitivity-imparting group substitution may be zero, wherein the mixture of the first component and the second component has a third degree of photosensitivity-imparting group substitution measured in milliequivalents of photosensitivity-imparting group per gram which is lower than the first degree of photosensitivity-imparting group substitution and higher than the second degrType: GrantFiled: August 29, 1996Date of Patent: September 28, 1999Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller
-
Patent number: 5900443Abstract: A polymer surface and near surface treatment process produced by irradiation with high energy particle beams. The process is preferably implemented with pulsed ion beams. The process alters the chemical and mechanical properties of the polymer surface in a manner useful for a wide range of commercial applications.Type: GrantFiled: November 22, 1996Date of Patent: May 4, 1999Inventors: Regan W. Stinnett, J. Pace VanDevender
-
Patent number: 5889077Abstract: Disclosed is a process which comprises reacting a polymer of the general formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3## or mixtures thereof, and n is an integer representing the number of repeating monomer units, with (i) a formaldehyde source, and (ii) an unsaturated acid in the presence of an acid catalyst, thereby forming a curable polymer with unsaturated ester groups. Also disclosed is a process for preparing an ink jet printhead with the above polymer.Type: GrantFiled: August 29, 1996Date of Patent: March 30, 1999Assignee: Xerox CorporationInventors: Timothy J. Fuller, Ram S. Narang, Thomas W. Smith, David J. Luca, Raymond K. Crandall
-
Patent number: 5849809Abstract: Disclosed is a composition which comprises (a) a polymer containing at least some monomer repeat units with photosensitivity-imparting substituents which enable crosslinking or chain extension of the polymer upon exposure to actinic radiation, said polymer being of the formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3## or mixtures thereof, and n is an integer representing the number of repeating monomer units, wherein said photosensitivity-imparting substituents are hydroxyalkyl groups; (b) at least one member selected from the group consisting of photoinitiators and sensitizers; and (c) an optional solvent. Also disclosed are processes for preparing the above polymers and methods of preparing thermal ink jet printheads containing the above polymers.Type: GrantFiled: August 29, 1996Date of Patent: December 15, 1998Assignee: Xerox CorporationInventors: Ram S. Narang, Timothy J. Fuller
-
Patent number: 5358978Abstract: This invention relates to alkenyl ether polycarbonates having the formula ##STR1## wherein A is selected from the group consisting of lower alkyl and R'HC.dbd.CHOR--, R and R" are each independently a divalent radical having from 2 to 20 carbon atoms and are selected from the group of alkylene, mono- or poly- alkoxylated alkylene, alkenylene, alkynylene, arylene, alkarylene and aralkylene radicals, which radicals are optionally substituted with halo, alkyl, cyano, nitro or alkoxy; R' is hydrogen or lower alkyl; (n) has a value of from 1 to 10 and (m) has a value of from 0 to 10; with the proviso that R" contains at least 3 carbon atoms when m is zero. The invention also concerns the preparation and use of said alkenyl ether polycarbonates.Type: GrantFiled: February 3, 1993Date of Patent: October 25, 1994Assignee: ISP Investments Inc.Inventors: Jeffrey S. Plotkin, Fulvio J. Vara, James A. Dougherty, Paul D. Taylor, Kolazi S. Narayanan
-
Patent number: 5304628Abstract: A radiation-curing resin composition comprising (A) a resin having a carboxylic acid group and an unsaturated double bond and (B) a compound containing a cyclocarbonate group. The composition is excellent in stability and curing properties and provides a cured film excellent in water resistance, solvent resistance, chemical resistance, and heat resistance.Type: GrantFiled: August 4, 1992Date of Patent: April 19, 1994Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Masashi Kinoshita, Hidenobu Ishikawa
-
Patent number: 5288376Abstract: A perfluorooligoether iodide is prepared by exposing a perfluoropolyether carboxylic iodide to UV light.Type: GrantFiled: February 16, 1993Date of Patent: February 22, 1994Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masayuki Oyama, Noriyuki Koike, Toshio Takago
-
Patent number: 5215860Abstract: Energy polymerizable compositions comprising at least one cyanate monomer and as curing agent an organometallic compound are disclosed. The compositions are useful in applications requiring high performance, such as high temperature performance; in composites, particularly structural composities; structural adhesives; tooling for structural composities; electronic applications such as printed wiring boards and semiconductor encapsulants; graphic arts; injection molding and prepregs; and high performance binders.Type: GrantFiled: August 19, 1988Date of Patent: June 1, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Fred B. McCormick, Katherine A. Brown-Wensley, Robert J. DeVoe
-
Patent number: 5034496Abstract: Polycarbonates formed at least in part from dihydroxy aryl ketones and optionally benzylic hydrogen containing aromatic diols may be crosslinked by exposure to electromagnetic radiation such as ultraviolet light, thereby imparting improved solvent resistance.Type: GrantFiled: June 12, 1989Date of Patent: July 23, 1991Assignee: The Dow Chemical CompanyInventors: Stephen E. Bales, Ronald L. Yates
-
Patent number: 4904710Abstract: Carbonate polymer compositions are rendered gamma ray resistant by the incorporation of 500 to 50,000 ppm of one or more polyether polyols. Compared to the controls, the compositions of the invention have a reduced yellowing after exposure to cobalt 60 radiation.Type: GrantFiled: October 31, 1985Date of Patent: February 27, 1990Assignee: The Dow Chemical CompanyInventor: Vaughn M. Nace
-
Patent number: 4749726Abstract: A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first frequency below 300 nm generates 2 to 8 mol percent of phenyl salicylate groups which are rearranged to dihydroxybenzophenone groups by irradiating the resin under oxygen excluding conditions at a second frequency from 300 to 320 nm.Type: GrantFiled: December 8, 1986Date of Patent: June 7, 1988Assignee: California Institute of TechnologyInventors: Amitava Gupta, Ranty H. Liang, Andre H. Yavrouian
-
Patent number: 4686245Abstract: A composition sufficiently irradiated to achieve sterilization comprising an aromatic carbonate polymer in admixture with an anti-yellowing upon exposure to sterilization irradiation effective amount of a boron compound having part of its structure at least one ##STR1## group wherein R is selected from alkyl of one to twenty-four carbon atoms, inclusive, alkenyl of two to twenty-four carbon atoms, inclusive, cycloalkyl of four to fourteen carbon atoms, inclusive, aryl of six to fourteen carbon atoms, inclusive; and substituted phenyl wherein there are one to three substituents which are the same or different and are alkyl of one to six carbon atoms, inclusive, alkoxy of one to six carbon atoms, inclusive, and halo; and R' is selected from the same group as R with a further hydrogen atom replaced by a bond to the second oxygen.Type: GrantFiled: January 2, 1985Date of Patent: August 11, 1987Assignee: General Electric CompanyInventor: Linda H. Nelson
-
Patent number: 4636532Abstract: A method for reducing the molecular weight of a polyglutarimide polymer having a molecular weight of 50,000 or higher, is disclosed. This is accomplished by the following steps:(a) dissolving the polyglutarimide polymer in a solvent which is transparent to ultraviolet radiation;(b) exposing the polyglutarimide solution to ultraviolet radiation for a sufficient time to reduce the molecular weight of the polyglutarimide; and(c) re-isolating the resin by precipitating the resin in an organic solution. A process for preparing a coatable photoresist composition wherein the molecular weight of a polyglutarimide resin may be reduced to a desired weight for a specific use is also taught.Type: GrantFiled: October 11, 1985Date of Patent: January 13, 1987Assignee: Shipley Company Inc.Inventor: Harold F. Sandford