Nitrogen-containing Reactant Patents (Class 528/208)
-
Patent number: 7790831Abstract: In accordance with the present invention there are provided hyperbranched benzobisazole polymers having repeating units of the formulas: and hyperbranched bibenzazole polymers having repeating units of the formulas: wherein Q is —S— or —NH—; the terminal groups X and Y are COOH and respectively, with their total number (X+Y) equals n+1, where n=degree of polymerization. The ratio X:Y can be controlled by varying the stoichiometric ratio of trimesic acid (A3 monomer) and 2,5-diamino-1,4-dimercaptobenzene dihydrochloride (B2 monomer) from 1:1 to 1.1.35.Type: GrantFiled: June 15, 2006Date of Patent: September 7, 2010Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Loon-Seng Tan, David H. Wang, Jong-Beom Baek
-
Publication number: 20100119969Abstract: There is provided a positive photosensitive resin composition that is excellent in electric insulating properties, heat resistance, mechanical strength and electrical characteristics, and capable of forming a high-resolution circuit pattern. The positive photosensitive resin composition comprises at least one type of a polyhydroxyamide resin containing a repeating unit represented by Formula (1) and having a weight average molecular weight of 3,000 to 100,000, and a compound generating an acid by light irradiation. (where X represents a tetravalent aliphatic group or an aromatic group; R1 and R2 independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atom(s); Ar1 and Ar2 independently represent an aromatic group; Y represents an organic group containing an aromatic group substituted with at least one OH group; n represents an integer of 1 or more; and l and m independently represent an integer of 0 or 1 or more and satisfy l+m?2).Type: ApplicationFiled: May 27, 2008Publication date: May 13, 2010Applicant: NISSAN CHEMICAL INDUSTRIES LTD.Inventors: Kazuya Ebara, Hideo Suzuki, Takayuki Tamura
-
Publication number: 20100081782Abstract: The present invention provides a compound having a formula: where R1 is selected from the group consisting of alkyl, CH2(OC2H4)OCH3, and —(OC2H4)OCH3; n is 0-4; Olig is an oligomer having a formula: -L-O-PAGR.R2]q where L is a optional linker moiety selected from the group consisting of —CH2O—, —CH2OX—, —OX—, —C(O)—, —C(O)X, —NH—, —NHC(O)—, —XNHC(O)—, —NHC(O)X—, —C(O)NH—, —C(O)NHX—, and where X is alky1-6 or is not present, Y is N or O or is not present, and R3 is alkyl1-6; PAG is a linear or branched polyalkylene glycol moiety; R2 is an alkyl1-22 capping moiety if X is present or alkyl2-22 if X is not present; and q is a number from 1 to the maximum number of branches on PAG; and m is 1-5.Type: ApplicationFiled: November 20, 2009Publication date: April 1, 2010Inventors: Nnochiri N. Ekwuribe, Amy L. Odenbaugh
-
Publication number: 20100010189Abstract: A gas-phase, continuous process is provided for the manufacture of 2,6-diaminopyridine and related compounds from glutaronitriles, which are used industrially as compounds and as components in the synthesis of a variety of useful materials. The synthesis proceeds by means of a dehydrogenative aromatization process.Type: ApplicationFiled: July 8, 2008Publication date: January 14, 2010Inventors: KEITH W. HUTCHENSON, AARON MINTER, GREGG SUNSHINE
-
Publication number: 20090304610Abstract: The invention concerns synthetic polymers obtainable by oxidative polymerization of vegetal tannins, alone or in combination with eumelanin and/or pyrocatechic precursors, method of preparation and uses thereof in the cosmetic and dermato-logic fields; complexes of said polymers with metals and their use in dyeing processes are also disclosed.Type: ApplicationFiled: November 29, 2005Publication date: December 10, 2009Inventor: Carlo Ghisalberti
-
Publication number: 20090286094Abstract: A novel polyimide as a high molecular weight material having a low dielectric constant, a low dielectric loss tangent and low water absorptivity, a polyamic acid capable of generating the above polyimide, the above polyimide and the polyamic acid being obtained by reacting an aromatic diamine, obtained by introducing aromatic amino groups into both terminals of a specific bifunctional phenylene ether oligomer, with an acid anhydride, a process for the production of the polyimide, a process for the production of the polyimide, a film of the polyimide, and a laminate comprising the above film.Type: ApplicationFiled: May 13, 2009Publication date: November 19, 2009Inventors: Kazuyoshi Uera, Daisuke Ohno, Kenji Ishii
-
Patent number: 7582719Abstract: Hyperbranched benzazole polymers having repeating units of the formula: wherein Q is —O—, —S— or —NH—, and the terminal groups R are carboxylic acids with their total number equals n+1. A generic method for preparing the polymers is provided. Also provided are the star block copolymers derived from these hyperbranched benzazole polymers and linear poly(ether-ketones) having the following generic formula where x and y are the numbers of repeat units for each poly(ether-ketone) chain; the placement of the carbonyl moieties in the repeat units of the poly(ether-ketone) chains can be either meta or para to the phenoxy groups; the maximal number of poly(ether-ketone) chains is n+1, where n=number of repeat units for hyperbranched polybenzazole). A general method for synthesizing these star block copolymers is provided.Type: GrantFiled: July 28, 2005Date of Patent: September 1, 2009Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Loon-Seng Tan, Jong-Beom Baek
-
Publication number: 20090179000Abstract: A method of manufacturing an inkjet printhead, in which a solvent included in a positive photoresist composition or in a non-photosensitive soluble polymer composition which is used to form a sacrificial layer has a different polarity from that of a solvent included in a negative photoresist composition that is used to form at least one of a channel forming layer and a nozzle layer.Type: ApplicationFiled: June 24, 2008Publication date: July 16, 2009Applicants: Samsung Electronics Co., Ltd, Korea Advanced Institute of Science and TechnologyInventors: Jong-jin Park, Su-min Kim, Jin-baek Kim, Yong-ung Ha, Yong-seop Yoon, Byung-ha Park
-
Publication number: 20090170927Abstract: The present invention relates to compounds of formula I, which are functionalized phenolic compounds, and polymers formed from the same. Ar—[O—(X)p—R?]q??I Polymers formed from the functionalized phenolics are expected to have controllable degradation profiles, enabling them to release an active component over a desired time range. The polymers are also expected to be useful in a variety of medical applications.Type: ApplicationFiled: October 16, 2006Publication date: July 2, 2009Applicant: BEZWADA BIOMEDICAL, LLCInventor: Rao S. Bezwada
-
Patent number: 7544762Abstract: A polyester having a good color tone (a high L value and a low b value) and a low acetaldehyde content is obtained by using a catalyst containing a reaction product of (A) a titanium compound (1) represented by the general formula (I) and/or a titanium compound (2) obtained by reacting the titanium compound (1) of the general formula (I) with an aromatic polyhydric carboxylic acid represented by the general formula (II) or an anhydride thereof, with (B) a phosphorus compound (3) represented by the general formula (III). [wherein R1, R2, R3, R4 and R5=a C2-C10 alkyl group, k=1 to 3, m=2 to 4, and R6=a substituted or non-substituted C6-C20 aryl group or a C6-C20 alkyl group].Type: GrantFiled: July 16, 2002Date of Patent: June 9, 2009Assignee: Teijin LimitedInventors: Tomoyoshi Yamamoto, Hiroki Nagano, Minoru Suzuki, Hiroshi Toyao, Tomoyuki Kishino, Nobuo Minobe, Ryoji Tsukamoto, Kenichi Ishihara
-
Publication number: 20090131624Abstract: Morpholino compounds are provided having the structure: where R1 is selected from the group consisting of lower alkyl, di(lower alkyl)amino, and phenyl; R2 is selected from the group consisting of lower alkyl, monocyclic arylmethyl, and monocyclic (aryloxy)methyl; R3 is selected from the group consisting of triarylmethyl and hydrogen; and Y is selected from the group consisting of: a protected or unprotected hydroxyl or amino group; a chlorophosphoramidate group; and a phosphorodiamidate linkage to the ring nitrogen of a further morpholino compound or a morpholino oligomer. Such compounds include doubly protected morpholino guanine (MoG) monomers. Also described is their use in synthesis of morpholino oligomers.Type: ApplicationFiled: November 14, 2008Publication date: May 21, 2009Applicant: AVI BIOPHARMA, INC.Inventors: MATTHEW DALE REEVES, DWIGHT D. WELLER
-
Patent number: 7511081Abstract: The present invention relates to a recycling method of a mixed waste of polyester and polyamide (hereinafter, referred to as “mixed waste”) in which polyesters including polyethylene terephthalate and polyamides are inseparable from one another. In accordance with the recycling method of the present invention, it is possible to prepare a solid block polymer having an acid value of 1 to 150 mgKOH/g, a weight average molecular weight of 3,000 to 50,000 and a softening point of 10 to 150° C., or a liquid polyester-amide block polymer composition having good compatibility, solubility and dispersibility. In addition, the polymer having an acid value of more than 20 mgKOH/g is reacted with a basic compound to form a neutralized salt which is then used to prepare a water-soluble polyester-amide block polymer composition.Type: GrantFiled: March 24, 2005Date of Patent: March 31, 2009Inventors: Do-Gyun Kim, Hyo-Sung Kim
-
Patent number: 7511113Abstract: An aromatic ether oligomer or polyaromatic ether comprising the formula: O—Arn; wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a dihaloaromatic; and wherein the reaction is performed in the presence of a copper compound and cesium carbonate. The polyaromatic ether is formed when neither the dihydroxyaromatic nor the dihaloaromatic is present in an excess amount. The aromatic ether oligomer is formed by using an excess of either dihydroxyaromatic or dihaloaromatic. A phthalonitrile monomer comprising the formula: formed by reacting a 3- or 4-nitrophthalonitrile with a hydroxy-terminated aromatic ether oligomer. A thermoset formed by curing the phthalonitrile monomer. Processes for forming all the above.Type: GrantFiled: March 17, 2004Date of Patent: March 31, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Dawn D. Dominguez
-
Patent number: 7507784Abstract: Main chain thermotropic liquid crystal esters, ester-imides, and ester-amides were prepared from AA, BB, and AB type monomeric materials and end-capped with phenylacetylene, phenylmaleimide, or nadimide reactive end-groups. The end-capped liquid crystal oligomers are thermotropic and have, preferably, molecular weights in the range of approximately 1000-15,000 grams per mole. The end-capped liquid crystal oligomers have broad liquid crystalline melting ranges and exhibit high melt stability and very low melt viscosities at accessible temperatures. The end-capped liquid crystal oligomers are stable for up to an hour in the melt phase. They are highly processable by a variety of melt process shape forming and blending techniques. Once processed and shaped, the end-capped liquid crystal oligomers were heated to further polymerize and form liquid crystalline thermosets (LCT). The fully cured products are rubbers above their glass transition temperatures.Type: GrantFiled: April 29, 2005Date of Patent: March 24, 2009Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Theodorus J. Dingemans, Erik S. Weiser, Terry L. St. Clair
-
Patent number: 7452959Abstract: An aromatic ether oligomer or polyaromatic ether comprising the formula: O—Arn; wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a dihaloaromatic; and wherein the reaction is performed in the presence of a copper compound and cesium carbonate. The polyaromatic ether is formed when neither the dihydroxyaromatic nor the dihaloaromatic is present in an excess amount. The aromatic ether oligomer is formed by using an excess of either dihydroxyaromatic or dihaloaromatic. A phthalonitrile monomer comprising the formula: formed by reacting a 3- or 4-nitrophthalonitrile with a hydroxy-terminated aromatic ether oligomer. A thermoset formed by curing the phthalonitrile monomer. Processes for forming all the above.Type: GrantFiled: March 17, 2004Date of Patent: November 18, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Dawn D. Dominguez
-
POLY(CARBONATE-CO-UREA) COPOLYMERS AND MELT TRANSESTERIFICATION METHOD OF PREPARING THESE COPOLYMERS
Publication number: 20080275206Abstract: Disclosed herein is a poly(carbonate-co-urea-co-ester) copolymer comprising incorporated urea compound, dihydroxy compound and diacid compound residues. Also disclosed herein is a poly(carbonate-co-urea) copolymer comprising incorporated urea compound and dihydroxy compound residues.Type: ApplicationFiled: May 3, 2007Publication date: November 6, 2008Applicant: GENERAL ELECTRIC COMPANYInventors: Jan Henk Kamps, Edward Kung, Jan-Pleun Lens -
Publication number: 20080269455Abstract: PROBLEMS The present invention relates to a process for producing a polybenzoxazole polymer and provides a process for producing the polybenzoxazole polymer within a short reaction time. MEANS FOR SOLVING PROBLEMS A process for producing a polybenzazole polymer comprises producing the polybenzazole polymer in a non-oxidizing dehydrating solvent while employing a compound represented by the following general formula (1) as a raw material including a first polymerization step in which polymerization is performed at a temperature of 150° C. or less and a latter polymerization step in which polymerization is performed at a temperature of 200° C.Type: ApplicationFiled: September 11, 2006Publication date: October 30, 2008Applicant: Toyo Boseki Kabushiki KaishaInventors: Naoki Watanabe, Go Mastuoka, Fuyuhiko Kubota, Yukihiro Abe, Yasuko Mitooka
-
Publication number: 20080187567Abstract: Biocompatible, bioresorbable polymers comprising a plurality of monomeric repeating units containing an amide group, wherein said amide groups are N-substituted and the N-substituent and degree of N-substitution are effective to lower the melt viscosity, the solution viscosity, or both, compared to the same polymer without N-substitution.Type: ApplicationFiled: October 17, 2007Publication date: August 7, 2008Inventors: Joachim B. Kohn, Durgadas Bolikal, Jaap Schut, Ernest G. Baluca
-
Publication number: 20080152690Abstract: Polymers with a hydrolytically labile polymer backbones with non-toxic biocompatible diphenolic repeating units having the structure: wherein R9 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendent carboxylic acid group or the benzyl ester thereof; and non-toxic biocompatible diphenolic repeating units having the structure: wherein R12 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendent carboxylic acid ester group selected from straight and branched alkyl and alkylaryl esters containing up to 18 carbon atoms and ester derivatives of biologically and pharmaceutically active compounds covalently bonded to the polymer, provided that said ester group is not a benzyl group or a group that is removed by hydrogenolysis. Implantable medical devices and treatment methods using the polymers are also disclosed.Type: ApplicationFiled: March 11, 2008Publication date: June 26, 2008Applicant: Rutgers, The State University of New JerseyInventors: Joachim B. Kohn, Durgadas Bolikal, Shuiyum Guan
-
Patent number: 7388035Abstract: A method for preparing poly(2,5-benzimidazole) whereby 3,4-diaminobenzoic acid is polymerized using a dehydrating reagent containing P2O5 and CX3SO3H where X is H or F. The poly(2,5-benzimidazole) has good proton conductivity and low methanol permeability, and therefore can be used as a polymer electrolyte membrane for a fuel cell.Type: GrantFiled: October 26, 2004Date of Patent: June 17, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Hyoung-Juhn Kim, Yeong-Chan Eun, Sung-Yong Cho, Ho-Jin Kweon
-
Patent number: 7348395Abstract: A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with a cyanide compound in the presence of a base to form the cyanate ester shown below. The cyanate ester may then be cross-linked to a thermoset having triazine ring cross-links.Type: GrantFiled: June 22, 2006Date of Patent: March 25, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M Keller, Matthew Laskoski
-
Patent number: 7307137Abstract: The present invention is directed to low dielectric polymers and to methods of producing these low dielectric constant polymers, dielectric materials and layers, and electronic components. In one aspect of the present invention, an isomeric mixture of thermosetting monomers, wherein the monomers have a core structure and a plurality of arms, is provided, and the isomeric mixture of thermosetting monomers is polymerized, wherein polymerization comprises a reaction of an ethynyl group that is located in at least one arm of a monomer.Type: GrantFiled: October 18, 2001Date of Patent: December 11, 2007Assignee: Honeywell International Inc.Inventors: Kreisler Lau, Feng Quan Liu, Paul Apen, Boris Korolev, Emma Brouk, Ruslan Zherebin, David Nalewajek, Roger Leung
-
Patent number: 7087707Abstract: A cyanate ester system is disclosed. An aryl ether oligomer may be made from a dihydroxyaromatic compound and a dihaloaromatic compound in the presence of a base. The oligomer is then reacted with a cyanide compound in the presence of a base to form the cyanate ester shown below. The cyanate ester may then be cross-linked to a thermoset having triazine ring cross-links.Type: GrantFiled: April 14, 2004Date of Patent: August 8, 2006Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Matt Laskoski
-
Patent number: 7049386Abstract: In a method of producing a low dielectric constant polymer, a thermosetting monomer is provided, wherein the thermosetting monomer has a cage compound or aryl core structure, and a plurality of arms that are covalently bound to the cage compound or core structure. In a subsequent step, the thermosetting monomer is incorporated into a polymer to form the low dielectric constant polymer, wherein the incorporation into the polymer comprises a chemical reaction of a triple bond that is located in at least one of the arms. Contemplated cage compounds and core structures include adamantane, diamantane, silicon, a phenyl group and a sexiphenylene group, while preferred arms include an arlyene, a branched arylene, and an arylene ether. The thermosetting monomers may advantageously be employed to produce low-k dielectric material in electronic devices, and the dielectric constant of the polymer can be controlled by varying the overall length of the arms.Type: GrantFiled: June 19, 2002Date of Patent: May 23, 2006Assignee: Honeywell International Inc.Inventors: Kreisler S. Lau, Feng Quan Liu, Boris A. Korolev, Emma Brouk, Ruslan Zherebin, David Nalewajek
-
Patent number: 6939940Abstract: Main chain thermotropic liquid crystal esters, ester-imides, and ester-amides were prepared from AA, BB, and AB type monomeric materials and were end-capped with phenylacetylene, phenylmaleimide, or nadimide reactive end-groups. The resulting reactive end-capped liquid crystal oligomers exhibit a variety of improved and preferred physical properties. The end-capped liquid crystal oligomers are thermotropic and have, preferably, molecular weights in the range of approximately 1000-15,000 grams per mole. The end-capped liquid crystal oligomers have broad liquid crystalline melting ranges and exhibit high melt stability and very low melt viscosities at accessible temperatures. The end-capped liquid crystal oligomers are stable for up to an hour in the melt phase.Type: GrantFiled: January 5, 2001Date of Patent: September 6, 2005Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Theodorous J. Dingemans, Erik S. Weiser, Terry L. St. Clair
-
Patent number: 6803441Abstract: In a method of producing a low dielectric constant polymer, a thermosetting monomer is provided, wherein the thermosetting monomer has a cage compound or aryl core structure, and a plurality of arms that are covalently bound to the cage compound or core structure. In a subsequent step, the thermosetting monomer is incorporated into a polymer to form the low dielectric constant polymer, wherein the incorporation into the polymer comprises a chemical reaction of a triple bond that is located in at least one of the arms. Contemplated cage compounds and core structures include adamantane, diamantane, silicon, a phenyl group and a sexiphenylene group, while preferred arms include an arylene, a branched arylene, and an arylene ether. The thermosetting monomers may advantageously be employed to produce low-k dielectric material in electronic devices, and the dielectric constant of the polymer can be controlled by varying the overall length of the arms.Type: GrantFiled: October 8, 2002Date of Patent: October 12, 2004Assignee: Honeywell International Inc.Inventors: Kreisler Lau, Feng Quan Liu, Boris Korolev, Emma Brouk, Ruslan Zherebin, David Nalewajek
-
Patent number: 6767970Abstract: PPE copolymers comprise three repeating units. The PPE copolymers are polymerized with 2,6-DMP, dialkenylamide or dialkenylamine phenol, and another phenol derivative. A resin composition having a low cross-linking temperature is also disclosed, which comprises the PPE copolymer and a free radical initiator.Type: GrantFiled: December 3, 2002Date of Patent: July 27, 2004Assignee: Industrial Technology Research InstituteInventors: Shin-Shin Wang, Jie-Hwa Ma, Jong-Lieh Yang, Kuo-Yuan Hsu, Li-Chung Liang
-
Patent number: 6762277Abstract: A method of manufacturing a new N-carboxyamino acid anhydride and polyamino acid using a simple process operation. The method for manufacturing N-carboxyamino acid anhydride comprising reacting &agr;-amino acid with di-tert-butyltricarbonate. The method for manufacturing polyamino acid comprising decarboxylating the N-carboxyamino acid anhydride obtained by reacting &agr;-amino acid with di-tert-butyltricarbonate.Type: GrantFiled: April 26, 2002Date of Patent: July 13, 2004Assignee: JSR CorporationInventors: Hiroto Kudoh, Takeshi Endoh
-
Patent number: 6756470Abstract: An aromatic ether oligomer or polyaromatic ether comprising the formula: wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a dihaloaromatic; and wherein the reaction is performed in the presence of a copper compound and cesium carbonate. The polyaromatic ether is formed when neither the dihydroxyaromatic nor the dihaloaromatic is present in an excess amount. The aromatic ether oligomer is formed by using an excess of either dihydroxyaromatic or dihaloaromatic. A phthalonitrile monomer comprising the formula: formed by reacting a 3- or 4-nitrophthalonitrile with a hydroxy-terminated aromatic ether oligomer. A thermoset formed by curing the phthalonitrile monomer. Processes for forming all the above.Type: GrantFiled: April 26, 2002Date of Patent: June 29, 2004Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Dawn D. Dominguez
-
Patent number: 6590022Abstract: A method is provided for producing protective colloid-stabilized vinyl aromatic-1.3-diene-copolymers in the form of their aqueous polymer dispersions or in the form of a powder which can be re-dispersed in water, by emulsion-polymerizing a mixture containing at least one vinyl aromatic and at least one 1,3-diene in the presence of a protective colloid and optionally, drying the resulting polymer dispersions. In the method part of the protective colloid is provided straightaway and part is metered.Type: GrantFiled: May 21, 2000Date of Patent: July 8, 2003Assignee: Wacker-Chemie GmbHInventors: Thomas Bastelberger, Reinhard Haerzschel, Theo Mayer, Peter Weitzel, Peter Ball
-
Publication number: 20020188095Abstract: A method of manufacturing a new N-carboxyamino acid anhydride and polyamino acid using a simple process operation.Type: ApplicationFiled: April 26, 2002Publication date: December 12, 2002Applicant: JSR CORPORATIONInventors: Hiroto Kudoh, Takeshi Endoh
-
Patent number: 6482915Abstract: The invention provides a method for producing a thermotropic liquid crystalline polymer of high quality at high yield and in short polymerization time, which method includes polymerizing staring monomers I, II, III, and IV, i.e., (I) an aromatic hydroxycarboxylic acid, etc.; (II) an aromatic dicarboxylic acid and an alicyclic dicarboxylic acid; (III) an aromatic diol, an alicyclic diol, an aliphatic diol, etc.; and (IV) an aromatic hydroxylamine, an aromatic diamine, etc. in the presence of an acylating agent, wherein the starting materials are charged so as to satisfy the following equations (1) to (4): 0.0015≦((A)−(B))/((A)+(B))≦0.006 (1); 1.01≦(D)/(C)≦1.08 (2); 0≦(E)≦40 (3); and (D)/(C)≧−0.002 ×(E)+1.Type: GrantFiled: July 19, 2001Date of Patent: November 19, 2002Assignee: Polyplastics Co., Ltd.Inventor: Toshiaki Yokota
-
Patent number: 6469123Abstract: In a method of producing a low dielectric constant polymer, a thermosetting monomer is provided, wherein the thermosetting monomer has a cage compound or aryl core structure, and a plurality of arms that are covalently bound to the cage compound or core structure. In a subsequent step, the thermosetting monomer is incorporated into a polymer to form the low dielectric constant polymer, wherein the incorporation into the polymer comprises a chemical reaction of a triple bond that is located in at least one of the arms. Contemplated cage compounds and core structures include adamantane, diamantane, silicon, a phenyl group and a sexiphenylene group, while preferred arms include an arylene, a branched arylene, and an arylene ether. The thermosetting monomers may advantageously be employed to produce low-k dielectric material in electronic devices, and the dielectric constant of the polymer can be controlled by varying the overall length of the arms.Type: GrantFiled: July 19, 2000Date of Patent: October 22, 2002Assignee: Honeywell International Inc.Inventors: Kreisler S. Lau, Feng Quan Liu, Boris A. Korolev, Emma Brouk, Ruslan Zherebin, David Nalewajek
-
Publication number: 20020151668Abstract: A multi-dimensional copolymer array of a plurality of copolymers, polymerized from at least two independently variable sets of monomers, wherein the polymerization is characterized by:Type: ApplicationFiled: April 13, 1999Publication date: October 17, 2002Inventors: KEN JAMES, BROCCHINI STEPHEN, VARAWUT TANGPASUTHADOL, JOACHIM KOHN
-
Patent number: 6388045Abstract: Provided is a liquid crystalline polymer which is obtained by copolymerizing at least one polyfunctional aromatic monomer selected from the group consisting of the compounds represented by the formulae (I), (II) and (III) below with at least one polymerizable monomer. The liquid crystalline polymer of the present invention is excellent in heat resistance, molding properties, flow properties and mechanical properties, especially it provide molded article with improved weld strength.Type: GrantFiled: January 8, 2001Date of Patent: May 14, 2002Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Ryuzo Ueno, Masaya Kitayama, Kiichi Kometani, Taihei Hamasaki, Motoki Asahara
-
Thermally reactive near infrared absorption polymer coatings, method of preparing and methods of use
Patent number: 6177182Abstract: Provided herein are novel polymeric coating materials for direct digital imaging by laser. More specifically the novel coating materials are thermally reactive near infrared absorption polymers designed for use with near infrared laser imaging devices. This invention further extends to the preparation and methods of use of the novel materials. The invention is particularly useful in the preparation of lithographic printing plates for computer-to-plate and digital-offset-press technologies. The invention extends to photoresist applications, to rapid prototyping of printed circuit boards and to chemical sensor development.Type: GrantFiled: May 1, 2000Date of Patent: January 23, 2001Assignee: American Dye Source, Inc.Inventor: My T. Nguyen -
Thermally reactive near infrared absorption polymer coatings, method of preparing and methods of use
Patent number: 6124425Abstract: Provided herein are novel polymeric coating materials for direct digital imaging by laser. More specifically the novel coating materials are thermally reactive near infrared absorption polymers designed for use with near infrared laser imaging devices. This invention further extends to the preparation and methods of use of the novel materials. The invention is particularly useful in the preparation of lithographic printing plates for computer-to-plate and digital-offset-press technologies. The invention extends to photoresist applications, to rapid prototyping of printed circuit boards and to chemical sensor development.Type: GrantFiled: March 18, 1999Date of Patent: September 26, 2000Assignee: American Dye Source, Inc.Inventor: My T. Nguyen -
Patent number: 6001926Abstract: A fiber-reinforced phthalonitrile composite is made by impregnating or coating a fibrous material with a phthalonitrile prepolymer mixture containing a phthalonitrile monomer and an aromatic amine curing agent that is thermally stable and nonvolatile at a temperature up to about 375.degree. C., and that contains at least one electron withdrawing substituent effective to reduce the reactivity of the aromatic amine curing agent with the phthalonitrile monomer.Type: GrantFiled: October 2, 1997Date of Patent: December 14, 1999Assignee: The United States of America as represented by the Secretary of the NavyInventors: Satya B. Sastri, Teddy M. Keller
-
Patent number: 5973072Abstract: The present invention is directed to a polymeric vehicle, the formulated coating composition and a coating binder made from the polymeric vehicle and a method for making the polymeric vehicle where the polymeric vehicle includes a phenolic urethane reactive diluent. The phenolic urethane reactive diluent may be made from a phenolic ester alcohol having at least one aliphatic hydroxyl group.Type: GrantFiled: March 21, 1996Date of Patent: October 26, 1999Assignee: Exxon Chemical Patents, Inc.Inventors: Frank N. Jones, Vijay Swarup, Ramachandran P. Subrayan, Suru Zhang
-
Patent number: 5948881Abstract: Curative compositions of amine terminated polyamide resins blended with a deaminated bis-(p-aminocyclohexyl)methane composition (DeAms) are useful for curing adhesive epoxy resin compositions. The polyamides comprise combinations of fatty mono-acids, dimer acids, polyethyleneamines, and piperazine ring containing polyamines which are piperazine or N-aminoalkylpiperazine, where the alkyl chain is a C2 to C6 alkyl chain, wherein the ratio of equivalents of fatty mono-acid to dimer acid can range from about 0.001:1 to about 1:1, the ratio of moles of piperazine ring containing polyamine to polyethylene amine can range from about 0.1:1 to about 1:1, and the ratio of moles of polyamine to equivalents of acid can range from about 0.6:1 to about 1.2:1. DeAms is blended at 2 to 40 wt % based on polyamide. Adhesive compositions comprising these curatives are also disclosed.Type: GrantFiled: December 4, 1997Date of Patent: September 7, 1999Assignee: Air Products and Chemicals, Inc.Inventors: Dilipkumar Nandlal Shah, William Edward Starner
-
Patent number: 5922807Abstract: A fiber-reinforced phthalonitrile composite is made by impregnating or coating a fibrous material with a phthalonitrile prepolymer mixture containing a phthalonitrile monomer and an aromatic amine curing agent that is thermally stable and nonvolatile at a temperature up to about 375.degree. C., and that contains at least one electron withdrawing substituent effective to reduce the reactivity of the aromatic amine curing agent with the phthalonitrile monomer.Type: GrantFiled: October 2, 1997Date of Patent: July 13, 1999Assignee: The United States of America as represented by the Secretary of the NavyInventors: Satya B. Sastri, Teddy M. Keller
-
Patent number: 5919890Abstract: A method for producing polybenzazole, which comprises reacting a PBZ monomer salt with an AA-PBZ monomer or a BB-PBZ monomer in a non-oxidizing solvent having a dehydrating action to give an oligomer, and adding the AA-PBZ monomer or BB-PBZ monomer, which has not been subjected to the above reaction, to allow reaction with the oligomer, whereby to give a polymer having a desired polymerization degree. According to this method, the polymerization degree of the polymer to be obtained finally and of the polymer during production process can be easily controlled.Type: GrantFiled: April 30, 1997Date of Patent: July 6, 1999Assignee: Toyo Boseki Kabushiki KaishaInventors: Kiyoshi Hotta, Fuyuhiko Kubota, Yoshio Araki, Masakatsu Ohguchi
-
Patent number: 5886130Abstract: A new class of polyarylene co-polymers include repeating units comprising one or more arylene units having the general formula (--Ar--/--Y--).sub.n, where Y is a divalent group chosen from nil, --Z--, --Z--Ph--, and --Ph--Z--Ph--, where Z is a divalent group chosen from the group consisting of --O--, --S--, --NR--, --O(CO)--, --O(CO.sub.2)--,--(CO)NH(CO)--, --NR(CO)--, phthalimide, pyromellitimide, --CO--, --SO--, --SO.sub.2 --, --P(O)R--, --CH.sub.2 --, --CF.sub.2 --, and --CRR'--; Ph is phenylene (ortho, meta or para); and n is greater than 4. The co-polymers are useful as molding resins, and composite matrix resins, and where Ar is heteroarylene as ion exchange resins.Type: GrantFiled: November 2, 1995Date of Patent: March 23, 1999Assignee: Maxdem IncorporatedInventors: Mark S. Trimmer, Ying Wang, Matthew L. Marrocco III, Virgil J. Lee
-
Patent number: 5852155Abstract: Disclosed are polyesteramide resin compositions having amide units of formula (I): ##STR1## and the units of the formula (II): ##STR2## wherein the polyesteramide is substantially devoid of units derived from butane diol. The ratio of (I) to (II) in the polyesteramide is preferably less than 1:3. Preferred polyesteramides have at least 80% of units of formula (I) separated by at least one of the units of formula (II).Type: GrantFiled: March 1, 1995Date of Patent: December 22, 1998Assignee: General Electric CompanyInventors: Jan Bussink, Reinoud Jaap Gaymans, Johannes Hubertus G. M. Lohmeijer, Ilias Nicholas Mamalis, Gary F. Smith, Antoinette Cornelia Maria van Bennekom
-
Patent number: 5807969Abstract: In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative with the following structure:M--CO--R*--CO--Mwhere M stands for the residue of an (optionally substituted) 2-hydroxybenzoxazole, 2-hydroxybenzothiazole, or 1-hydroxybenzotriazole or of corresponding mercapto compounds and R* is the parent body of the dicarboxylic acid.Type: GrantFiled: August 28, 1996Date of Patent: September 15, 1998Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Hellmut Ahne, Eberhard Kuehn, Roland Gestigkeit
-
Patent number: 5807972Abstract: The invention is directed to a hydrolytically polymerized polycaprolactam with new chain regulation, whereby the polymerization of caprolactam (I) is carried out with 0.1-0.7 weight percent of an aromatic dicarboxylic acid (II), 0.01-0.7 weight percent of an aliphatic or cycloaliphatic diamine (III) that carries a primary and a tertiary amino group, and/or 0.01-0.7 weight percent 4-amino-2,2,6,6-tetraalkyl piperidine (IV), whereby the quantities of constituents I through IV add up to 100 weight percent and the quantity of the constituents III and/or IV amounts to 0.01-0.7 weight percent.Type: GrantFiled: August 27, 1997Date of Patent: September 15, 1998Inventors: Hanns-Jorg Liedloff, Ernst Morf, Gerhard Schmidt
-
Patent number: 5783654Abstract: In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid ester with the following structure:G--O--CO--R*--CO--O--G,where G is an (optionally substituted) succinimide or maleinimide group and R* is the parent body of the dicarboxylic acid.Type: GrantFiled: August 29, 1996Date of Patent: July 21, 1998Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Hellmut Ahne
-
Patent number: 5750711Abstract: The dicarboxylic acid derivatives according to the invention have the following structure ##STR1## wherein X denotes O, S, (CF.sub.2).sub.m, C(CF.sub.3).sub.2 or CF.sub.2 --CF(CF.sub.3) (m=1 to 10), and R stems from the following compounds: fluoro- or trifluoromethyl- and nitro- or cyanophenols, thiophenols or -aminobenzenes, 4-hydroxy-, 4-mercapto- or 4-aminocoumarins, N-hydroxysuccinimides or N-hydroxymaleimides, 2-hydroxy- or 2-mercaptobenzoxazoles or -benzothiazoles and 1-hydroxy- or 1-mercaptobenzotriazoles.Type: GrantFiled: August 28, 1996Date of Patent: May 12, 1998Assignee: Siemens AktiengesellschaftInventors: Racai Sezi, Hellmut Ahne, Eberhard Kuehn
-
Patent number: 5750638Abstract: A method for producing poly-o-hydroxy amides by heating a dicarboxylic acid to a temperature .gtoreq.80.degree. C., together with a sulfonic acid chloride and a tertiary amine in a suitable solvent, to form a reaction mixture and reacting the mixture obtained with a bis-o-aminophenol solution at a temperature <80.degree. C.Type: GrantFiled: June 19, 1996Date of Patent: May 12, 1998Assignee: Siemens AktiengesesllschaftInventors: Recai Sezi, Hellmut Ahne, Roland Gestigkeit
-
Patent number: 5747175Abstract: Liquid-crystalline polymer blends comprising two or more cholesteric liquid-crystalline polymers or at least one nematic liquid-crystalline polymer and at least one cholesteric liquid-crystalline polymer.All hues can be produced specifically and in a reproducible manner by variation in the blend components and in the mixing ratio. The polymer blends are suitable as materials or as effect pigments.Type: GrantFiled: April 1, 1997Date of Patent: May 5, 1998Inventors: Erwin Dietz, Axel Schonfeld