From Hydrocarbon Reactant Patents (Class 528/396)
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Patent number: 5017683Abstract: A condensed polycyclic, polynuclear aromatic thermosetting resin with improved moldability which is prevented from forming a cloud on a mold during molding is disclosed. The resin is a prepolymer derived by condensation polymerization of a condensed polycyclic aromatic compound or a mixture thereof with a monocyclic aromatic compounds and an aromatic compound having at least two hydroxymethyl groups as a crosslinking agent in the presence of an acid catalyst. The resin has a flow temperature of not higher than 150.degree. C. The acid catalyst is water-insoluble or when it is water-soluble the resin has an insolubilized acid ratio of at least 50%. The resin is useful in the manufacture of thermoset molded articles having good heat resistance and good mechanical and electrical properties. It can be blended with a filler and/or reinforcing agent to form a molding compound.Type: GrantFiled: August 25, 1989Date of Patent: May 21, 1991Assignee: Sumikin Chemical Co., Ltd.Inventors: Sugio Otani, Michio Tsuyuguchi, Haruyuki Kano, Yoshihisa Sone, Kenji Kageyama, Toshiaki Mabuchi
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Patent number: 5000994Abstract: An elastomeric member for use with a container and in contact with pharmaceutically pure contents therein. The elastomeric member has an elastomeric base and a continuous polyparaxylylene coating on the base. The coating ranges from about 0.1 microns to about 2.0 microns in thickness. The closure member has a coefficient of friction of less than 1.0 and is capable of substantially preventing metal extraction from said elastomers.Type: GrantFiled: January 30, 1989Date of Patent: March 19, 1991Assignee: The West Company, IncorporatedInventors: Val G. Romberg, Patty H. Kiang, Wayne T. Curry
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Patent number: 4973504Abstract: An elastomeric member for use with a container and in contact with pharmaceutically pure contents therein. The elastomeric member has an elastomeric base and a continuous polyparaxylylene coating on the base. The coating ranges from about 0.5 microns to about 2.0 microns in thickness. The closure member has a coefficient of friction of less than 1.0 and is capable of substantially preventing metal extraction from said elastomers.Type: GrantFiled: November 7, 1988Date of Patent: November 27, 1990Assignee: The West Company IncorporatedInventors: Val G. Romberg, Patty H. Kiang, Wayne T. Curry
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Patent number: 4954607Abstract: A ferromagnetic organic substance having a triaryl methane structure and a free radical concentration of methine carbon positions of at least 10.sup.17 radicals/g, preferably at least 10.sup.18 radials/g, is provided by polycondensing a condensed polynuclear aromatic compound or an electron donating group substituted monocyclic aromatic compound with an aromatic aldehyde in the presence of an acid catalyst, to produce a precondensate having a softening point between 30.degree. C. and 120.degree. C. and being soluble in various organic solvents, and subjecting the resulting precondensate to a dehydrogenation treatment and a purification treatment, followed by molding.Type: GrantFiled: August 15, 1989Date of Patent: September 4, 1990Assignee: Gunma UniversityInventors: Sugio Otani, Akira Kojima, Michiya Ota
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Patent number: 4950737Abstract: Vinylene copolymers composed of recurrent structural units of formula I ##STR1## wherein Ar denotes an aromatic or heterocyclic group, R denotes an inert substitutent and n stands for an integer with a value from 0-8 and processes for their preparation.Type: GrantFiled: June 3, 1988Date of Patent: August 21, 1990Assignee: Bayer AktiengesellschaftInventors: Walter Heitz, Andreas Greiner
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Patent number: 4946937Abstract: Vinylene copolymers composed of recurrent structural units of formula I ##STR1## wherein Ar denotes an aromatic or heterocyclic group, R denotes an inert substituent and n stands for an integer with a value from 0-8 and processes for their preparation.Type: GrantFiled: August 9, 1989Date of Patent: August 7, 1990Assignee: Bayer AktiengesellschaftInventors: Walter Heitz, Andreas Greiner
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Patent number: 4940775Abstract: Novel, linear alternating terpolymers of carbon monoxide, ethylenically unsaturated hydrocarbon and non-conjugated alkadiene having at least one carbon atom between the carbon-carbon double bonds are produced in the presence of a catalyst composition formed from a palladium compound, the anion of certain strong acids and a bidentate ligand containing phosphorus or nitrogen.Type: GrantFiled: May 15, 1989Date of Patent: July 10, 1990Assignee: Shell Oil CompanyInventor: Eit Drent
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Patent number: 4935488Abstract: Novel trimethylolheptanes having three highly reactive hydroxyl groups are provided. They are useful as raw materials for the production of polyesters for use in or as raw materials or modifiers for paints, inks, adhesives, coating compositions and molding resins. Uses for the trimethylolheptanes are also provided.Type: GrantFiled: April 20, 1989Date of Patent: June 19, 1990Assignee: Kurary Company, Ltd.Inventors: Toshihiro Omatsu, Yasuo Tokitoh, Noriaki Yoshimura, Masao Ishida, Makoto Yano, Koji Hirai, Yoichi Matsumoto, Keiji Kubo
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Patent number: 4911801Abstract: Electrically conductive polyparaphenylene polymer compositions are disclosed, as well as methods for their preparation and use, including use of the polymers in constructing a sensor. The polymer compositions have the characteristics of being both solution processible, as well as electrically conductive. The polymers are produced by placing a metal electrode into an aprotic solution of biphenyl. Current is then passed through the electrode such that the electrode becomes the anode and such that the biphenyl polymerizes and is deposited on the electrode. A sensor is produced by incorporating a sensor species into a polyparaphenylene polymer prepared according to the teaching of the present invention. This can be accomplished by polymerizing the biphenyl in the presence of the sensor species.Type: GrantFiled: October 1, 1985Date of Patent: March 27, 1990Assignee: University of UtahInventor: B. Stanley Pons
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Patent number: 4910291Abstract: An optical article such as optical disk and optical lens, made of an amorphous thermoplastic polyester resin comprised of recurring units, each recurring unit having an aromatic ring in the main chain thereof and an aromatic ring in the side chain thereof. The optical article have a good heat resistance, resistance to absorption of moisture and optical characteristics.Type: GrantFiled: August 5, 1988Date of Patent: March 20, 1990Assignee: Mitsubishi Rayon Company Ltd.Inventors: Naoki Yamamoto, Hiroshi Mori, Akira Nakata
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Patent number: 4902776Abstract: Poly-p-phenylene is produced by reaction of benzene with oxygen gas in the presence of a chloride of a metal having a lower valence and aluminum chloride.Type: GrantFiled: January 12, 1988Date of Patent: February 20, 1990Assignee: Hidefumi HiraiInventors: Hidefumi Hirai, Naoki Toshima, Keiichi Kanaka, Atsunori Koshirai
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Patent number: 4882413Abstract: A novel class of polymers and processes used in their preparation are described. The polymers are produced by a reaction between polyfunctional amines and quinones. Some are infusible and intractable. Others are eminently suitable for the production of coatings, adhesives, insulators, etc. Some polymers, in solution in appropriate solvents adhere to metals, siliceous materials, composites with sufficient affinity to displace water. The polymers can be cured by heat or chemicals to an impervious and insoluble material that is not wetted by water.Type: GrantFiled: May 24, 1988Date of Patent: November 21, 1989Inventor: Semih Erhan
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Patent number: 4871831Abstract: A method is presented to prepare totally functionalized ether-capped oligomeric polyphenols without molecular weight fractionation. The products generally are very low in inorganic salts and are characterized by the absence of volatiles leading to void formation in their subsequent curing. The success of the method rests upon conducting the reaction under totally homogeneous conditions throughout.Type: GrantFiled: November 30, 1987Date of Patent: October 3, 1989Assignee: Allied-Signal Inc.Inventors: Andrew M. Zweig, Jeffrey P. Conrad
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Patent number: 4866157Abstract: A thermosetting resin composition is disclosed which comprises a fusible product obtained by a method including the steps of:providing a mixture which comprises (a) a raw material containing one or more condensed polynuclear aromatic compounds having at least two condensed benzene rings, (b) a crosslinking agent containing an aromatic compound having one or more aldehyde groups directly bonded to the aromatic nuclei thereof, and (c) an acid catalyst; andreacting the mixture at a temperature sufficient to effect the crosslinking of the one or more condensed polynuclear aromatic compounds, thereby to obtain the fusible product. A further heat treatment of the thermosetting resin composition gives a COPNA resin which is an infusible, insoluble, condensed, polynuclear aromatic hydrocarbon resin.Type: GrantFiled: November 7, 1988Date of Patent: September 12, 1989Inventors: Sugio Otani, Michiya Ota, Akira Kojima
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Patent number: 4847420Abstract: New unsaturated alcohol-thioether, in which a double bond is located in the beta position to the S atom, in an aliphatic chain which can repeat. The compounds are generally of the formula ##STR1## In this formula, A is a branched or unbranched aliphatic chain which may be substituted or unsubstituted, and preferably contains from 2-6 carbon atoms; R.sup.1, R.sup.3 and R.sup.4 may be the same or different, and are aliphatic groups and/or hydrogen atoms; R.sup.2 is an aliphatic group, hydrogen, alkylene, or a bond and p gives the degree of polymerization of the beta-unsaturated aliphatic chain.These compounds may be prepared by the reaction of a mercapto-alcohol with a conjugated diene in the presence of a free radical catalyst.Type: GrantFiled: August 24, 1987Date of Patent: July 11, 1989Assignee: Societe Nationale Elf AquitaineInventor: Yves Labat
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Patent number: 4839460Abstract: A process for the preparation of novel polymers comprises reacting a primary polyether polyamine of the formulaA(E.sub.p NH.sub.2).sub.m,wherein A is the residue of a polyether initiator having m initiator groups, E is an ether moiety from an oxirane compound, p is 5-90 and m is 2-8; with an aqueous solution of formaldehyde or with paraformaldehyde in the absence of a diluent.Type: GrantFiled: February 25, 1988Date of Patent: June 13, 1989Assignee: The Dow Chemical CompanyInventor: David C. Molzahn
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Patent number: 4832702Abstract: The fuel or lubricant composition proposed contains one or more polybutyl or polyisobutylamines of the general formula I ##STR1## where R.sub.1 is a polybutyl- or polyisobutyl radical derived from isobutene and up to 20% by weight of n-butene and R.sub.2 and R.sub.3 are identical or different and are each hydrogen, an aliphatic or aromatic hydrocarbon, a primary or secondary, aromatic or aliphatic aminoalkylene radical or polyaminoalkylene radical, a polyoxyalkylene radical or a hetaryl or heterocyclyl radical, or, together with the nitrogen atom to which they are bonded, form a ring in which further hetero atoms may be present.Type: GrantFiled: March 25, 1987Date of Patent: May 23, 1989Assignee: BASF AktiengesellschaftInventors: Rudolf Kummer, Dieter Franz, Hans P. Rath
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Patent number: 4831096Abstract: Mixtures of azolakanes of varying thermal stabilities at least one of which is an unsymmetrical azoalkane (R--N.dbd.N--R'), are prepared by reacting 4 equivalents of a mixture of two or more primary alkyl, cycloalkyl or aralkylamines with 1 equivalent of sulfuryl chloride in an inert solvent and oxidizing the resulting mixture of sulfamide products with basic bleach. The unsymmetrical azoalkanes can be separated from the symmetrical azoalkanes by a variety of conventional techniques. The azoalkane mixtures are excellent polymerization initiators for vinyl monomers and curing agents for unsaturated polyester resins.Type: GrantFiled: January 21, 1988Date of Patent: May 16, 1989Assignee: Pennwalt CorporationInventor: Ronald E. MacLeay
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Patent number: 4812553Abstract: The novel polyesters are prepared by direct esterification of bis-hydroxyalkyl esters of aromatic diacids with unsaturated diacids or their anhydrides. These polyesters differ from the prior art polyesters in that they have alternating structures of saturated and unsaturated esters.Type: GrantFiled: October 16, 1987Date of Patent: March 14, 1989Assignee: Arco Chemical Technology, Inc.Inventor: Stephen H. Harris
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Patent number: 4808453Abstract: A closure for use with a container with pharmaceutically pure contents therein. The elastomeric closure has an elastomeric base and a continuous polyparaxylylene coating on the base. The coating ranges from about 0.5 microns to about 2.0 microns in thickness. The closure member has a coefficient of friction of less than 1.0 and is capable of substantially preventing metal extraction from said elastomers.Type: GrantFiled: April 13, 1987Date of Patent: February 28, 1989Inventors: Val. G. Romberg, Patty H. Kiang, Wayne T. Curry
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Patent number: 4801457Abstract: A therapeutic composition comprising a therapeutic macromolecular agent incorporated in cross-linked polyacetal.Type: GrantFiled: October 7, 1987Date of Patent: January 31, 1989Assignee: Sandoz Pharm. Corp.Inventors: Jorge Heller, Donald W. H. Penhale
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Patent number: 4791182Abstract: A catalytic amount of a finely divided copper salt catalyst is added to a monomer having at least one cyclobutarene group to lower the peak temperature of the polymerization oxotherm.Type: GrantFiled: September 8, 1987Date of Patent: December 13, 1988Assignee: Dow Chemical CompanyInventors: Robert A. Kirchhoff, Jo Ann Gilpin, Cynthia Baker, Michael O. Myers
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Patent number: 4783521Abstract: Disclosed herein are novel linear copolymers having weight average molecular weight of 500-30,000 and comprising structural units represented by the following formulae (I), (II), (III) and (IV): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 mean individually an alkyl group having 4 or fewer carbon atoms and R.sub.4 denotes an alkyl, cycloalkyl, aralkyl or phenyl group, and multivalent metal salts thereof in each of which the multivalent metal forms the multivalent metal salt between carboxyl groups within the same molecule of the copolymer or between different molecules of the copolymer; color-developing agents comprising multivalent metal-modified resins of the copolymers; and color-developing sheets obtained by coating the color-developing agents on their surfaces.Type: GrantFiled: January 16, 1987Date of Patent: November 8, 1988Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Akihiro Yamaguchi, Keizaburo Yamaguchi, Yoshimitsu Tanabe, Makoto Asano, Masaru Wada
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Patent number: 4758653Abstract: A thermosetting composition which is capable of affording a heat-resisting, condensed polynuclear aromatic hydrocarbon resin and which includes:a raw material containing one or more condensed polynuclear aromatic compounds having at least three condensed benzene rings;a crosslinking agent containing an aromatic compound having at least two hydroxymethyl or halomethyl groups; andan acid catalyst. The raw material may be, for example, a coal pitch or petroleum pitch.Type: GrantFiled: February 14, 1986Date of Patent: July 19, 1988Assignee: Fuji Standard Research Inc.Inventors: Sugio Otani, Yoichiro Nagai
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Patent number: 4729851Abstract: Polymers with conjugated double bonds having heterocyclic and/or carbocyclic rings or ring systems in which said rings or ring systems are linked with one another in pairs via a carbon atom as a bridge member. Polymers of the invention have, at least five of said ring or ring-systems. The polymers may be prepared by reacting at least one compound of the formula ##STR1## with at least one compound of the formulaH--R" --H (II)in whichX represents fluorine, chlorine, bromine, iodine, hydroxyl, sulfate radicals or radicals of the formula --OR, --SO.sub.3 F, --SO.sub.3 R or --NR.sub.2 ;X.sub.2 represents two radicals X, or an oxygen atom of a carbonyl group;R represents the same or different alkyl radicals having from 1 to 8 carbon atoms, phenyl and a hydrogen atom; andR" represents the same or different monocyclic or polycyclic (hetero) arylene radicals optionally substituted by hydrocarbon radicals having 1 to 8 carbon atoms.Type: GrantFiled: August 21, 1986Date of Patent: March 8, 1988Assignee: Wacker-Chemie GmbHInventors: Hermann Braunling, Reinhard Jira
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Patent number: 4654053Abstract: The present invention discloses a novel and unique family of agents which reversibly binds molecular oxygen at room temperature.Type: GrantFiled: June 12, 1986Date of Patent: March 31, 1987Assignee: University Patents, Inc.Inventors: Robert E. Sievers, John N. Gillis
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Patent number: 4642329Abstract: Reactive polymeric compositions are prepared by subjecting arylcyclobutene monomeric compositions to polymerization conditions to provide a partially polymerized composition; and removing the partially polymerized composition from said conditions. The partially polymerized composition can be subsequently subjected to polymerization and curing conditions to provide a cured polymeric composition.Type: GrantFiled: August 30, 1985Date of Patent: February 10, 1987Assignee: The Dow Chemical CompanyInventors: Robert A. Kirchhoff, Alan Schrock, Jo A. Gilpin
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Patent number: 4626588Abstract: A high strength and modulus conjugated polymer film which comprises as its rincipal constitutive unit a conjugated polymer structure represented by the general formula:--R--CH.dbd.CH).sub.nwherein R is an aromatic hydrocarbon group having 6 to 20 carbon atoms which forms a consecutive carbon to carbon conjugated system with vinylene group, and n is an integer of 5 to 50,000, and has a tensile strength of 15 kg/mm.sup.2 or more and an elastic modulus of 350 kg/mm.sup.2 or more, and a highly electroconductive pyrolyzed product thereof.Type: GrantFiled: June 21, 1985Date of Patent: December 2, 1986Assignee: Director-General of the Agency of Industrial Science and TechnologyInventors: Ichiki Murase, Toshihiro Ohnishi, Takanobu Noguchi
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Patent number: 4543440Abstract: Terpolymers having 1,4-diketo functionalities and a carbonyl group concentration of about 5-20% of polymer weight can be conveniently cured by heating with an aromatic primary diamine or its precursor and a catalytic amount of an acid having a pKa of at most about 3. Cured polymers have good physical properties and are suitable in such applications as, for example hose, tubing, wire coatings, gaskets, and seals.Type: GrantFiled: March 9, 1984Date of Patent: September 24, 1985Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary L. Loomis
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Patent number: 4514522Abstract: The present invention discloses a novel and unique family of agents which reversibly binds molecular oxygen at room temperature.Type: GrantFiled: July 27, 1984Date of Patent: April 30, 1985Assignee: University Patents, Inc.Inventors: Robert E. Sievers, John N. Gillis
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Patent number: 4503205Abstract: A soluble polyene polymer and a method of making the same are disclosed. The polymer is of the class suitable for doping to produce an electrically conductive polymer. The method is generally applicable to acetylenic and aromatic monomers, proven examples of which include acetylene, benzene, anthracene and napthalene. In accordance with the method, the monomer is dissolved in arsenic trifluoride. Arsenic pentafluoride is then introduced into the solution to induce polymerization by what is speculated to be an ionic polymerization reaction. The resulting polymer differs from other polyene polymers in that it is soluble in common organic solvents, and further in that it can be melted without undergoing decomposition, thereby rendering it particularly suitable for processing to form various polymeric articles.Type: GrantFiled: December 16, 1983Date of Patent: March 5, 1985Assignee: The United States of America as represented by the United States Department of EnergyInventors: Mahmoud Aldissi, Raimond Liepins
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Patent number: 4465585Abstract: A cholesteric mesophase pitch is disclosed along with methods for producing the same.Type: GrantFiled: March 30, 1982Date of Patent: August 14, 1984Assignee: Union Carbide CorporationInventor: Irwin C. Lewis
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Patent number: 4457828Abstract: A mesophase pitch having ellipsoidal molecules is produced by the polymerization reaction of an aromatic hydrocarbon containing at least two condensed rings in which the coupling polymerization constitutes at least 60% of the polymerization reactions.Type: GrantFiled: March 30, 1982Date of Patent: July 3, 1984Assignee: Union Carbide CorporationInventor: Irwin C. Lewis
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Patent number: 4335235Abstract: Crystalline co-polybenzyls are prepared by the polymerization of 2,5-dimethylbenzyl chloride with a benzyl halide of the same series.Type: GrantFiled: October 20, 1980Date of Patent: June 15, 1982Assignee: Exxon Research & Engineering Co.Inventors: John E. Chandler, Robert W. Lenz
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Patent number: 4321184Abstract: An oxidated silicon compound will react with a substituted organic compound in the presence of an alkali compound to produce organic alkali metal silicate products which may be used as molding powders, as adhesives, as coating agents and be reacted with polyisocyanates to produce insulating foams.Type: GrantFiled: April 6, 1981Date of Patent: March 23, 1982Inventor: David H. Blount
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Patent number: 4319058Abstract: Ethanol may be separated from a feed mixture comprising ethanol and water by contacting said feed mixture with an adsorbent comprising a shaped replication of particle aggregates comprising carbonaceous pyropolymers containing recurring units of at least carbon and hydrogen atoms at a temperature in the range of from about 20.degree. to about 230.degree. C. and a pressure in the range of from about atmospheric to about 500 psig, selectively adsorbing substantially all of the ethanol to the substantial exclusion of water and thereafter recovering high purity ethanol by passing a desorbing material over the adsorbent.Type: GrantFiled: October 10, 1980Date of Patent: March 9, 1982Assignee: UOP Inc.Inventors: Santi Kulprathipanja, Richard W. Neuzil
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Patent number: 4312965Abstract: A process for forming polymeric polyamine/amide by contacting, in a liquid media, a hydrocarbon polymer having olefinic double bonds therein, a nitrogen containing compound selected from ammonia, or a monomeric primary or secondary amine, water, and carbon monoxide, in the presence of a catalytic amount of a rhodium atom containing compound selected from metallic rhodium, rhodium salts, rhodium oxides, rhodium carbonyls and ligands thereof at a temperature of from 50.degree. to 250.degree. C. and at a pressure of from about 30 to about 300 atmospheres.Type: GrantFiled: February 22, 1980Date of Patent: January 26, 1982Assignee: W. R. Grace & Co.Inventors: Felek Jachimowicz, Joseph W. Raksis
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Patent number: 4297481Abstract: A process for forming polymeric polyamine/amide wherein said amino/amido nitrogens are positioned in the polymer backbone by contacting a monomeric nitrogen compound which has at least two labile hydrogens bonded to the nitrogen atoms therein; a monomeric hydrocarbon compound containing at least two olefinic groups therein; carbon monoxide; and water in the presence of a catalytic amount of a rhodium atom containing compound selected from metallic rhodium, rhodium salts, rhodium oxides, rhodium carbonyls and ligands thereof at a temperature of from about 50.degree. C. to 250.degree. C. and at a pressure of from about 30 to about 300 atmospheres.Type: GrantFiled: February 22, 1980Date of Patent: October 27, 1981Assignee: W. R. Grace & Co.Inventor: Felek Jachimowicz
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Patent number: 4259475Abstract: Polybenzyls of high molecular weight and high crystallinity are obtained by polymerizing aralkyl halides in the presence of a catalyst comprising a complex of a Friedel-Crafts catalyst with a complexing agent which can be a nitroarene or a nitroalkane. The complex catalyst allows the polymerization to be run at higher temperatures and with higher rates. Yields are obtained up to 100%.Type: GrantFiled: March 29, 1979Date of Patent: March 31, 1981Assignee: Exxon Research & Engineering Co.Inventors: Burnett H. Johnson, John E. Chandler, Robert W. Lenz
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Patent number: 4255562Abstract: Crystalline co-polybenzyls are prepared by the polymerization of 2,5-dimethylbenzyl chloride with a benzyl halide of the same series. The polymers have utility in general thermoplastic applications such as, for example, the manufacture of conduits, hoses and pipes, as coatings for wire and cables, the manufacture of seals, molds and mechanical goods, tanks and pipelinings, and in other articles of manufacture.Type: GrantFiled: March 29, 1979Date of Patent: March 10, 1981Assignee: Exxon Research & Engineering Co.Inventors: John E. Chandler, Robert W. Lenz
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Patent number: 4255297Abstract: An adhesive binding agent based on at least one polymer of dicyclopentadiene and at least one aromatic hydrocarbon wherein the polymer comprises from 40 to 80% by weight of cyclopentadiene units and from 20 to 60% by weight of at least one aromatic hydrocarbon having a boiling point in the range from 110.degree. to 220.degree. C., selected from the group consisting of alkylaromatic hydrocarbons and tetrahydronaphthalene, said polymers having a mean molecular weight of from 300 to 5000, an iodine number (measured according to DIN Standard 53241, part 2) of from 0 to 60, and a melting point in the range of from 30.degree. to 150.degree. C., and an adhesive containing said binding agent in combination with a rubber or an ethylene-vinylacetate copolymer.Type: GrantFiled: December 6, 1978Date of Patent: March 10, 1981Assignee: Hoechst AktiengesellschaftInventors: Gerhard Werner, Heinz Schmelzer, Richard Sattelmeyer
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Patent number: 4225647Abstract: Various objects may be maintained in their original condition or protected from further damage by physical, chemical, and biological forces by applying thereto thin, continuous, impervious coatings of vapor-deposited poly(p-xylylene) polymer or derivatives thereof. By the invention, it is possible to protect paintings, photographs, documents, articles of sculpture, silver objects, coins, fishing hooks and lures, marine fittings and hardware, batteries, fuel cells, automotive parts, water pollution control devices, logic circuits, electrical components, electric motors and parts, light bulbs, ammunitions, fireworks, glass items, decorative items, timepieces, and decorative wrought iron grillwork.Type: GrantFiled: December 2, 1977Date of Patent: September 30, 1980Inventor: Richard A. Parent
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Patent number: 4202960Abstract: Thermostable, infusible and insoluble polymer obtained by thermosetting aromatic oligomers of low molecular weight in the presence of an acid catalyst, said aromatic oligomers having an average molecular weight up to about 5000, a softening temperature from 80.degree. to 400.degree. C. and being obtained by separation from the reaction mixture produced by reacting meta-terphenyl with acetyl chloride and aluminum chloride.Type: GrantFiled: September 16, 1977Date of Patent: May 13, 1980Assignee: Institut Francais du PetroleInventors: Guy Rabilloud, Bernard Masson, Pierre Giuliani, Bernard Sillion
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Patent number: 4186164Abstract: Pellicles of p-xylylene polymer of non-uniform thickness are prepared between a plurality of mold plates having planar or contoured mold surfaces by positioning the mold surfaces apart with respect to each other so as to form a passage therebetween, and, while providing a pattern of non-uniform pressure between, and/or temperature on, the mold surfaces, directing a stream of vapors of p-xylylene monomer through such passage so as to cause the monomer to condense and polymerize on the mold surfaces in a non-uniform manner in response to such pattern of pressure and/or temperature.The mold plates are held stationary, and/or are rotated, in the vapor condensation zone, during the pellicle forming operation.Type: GrantFiled: November 12, 1975Date of Patent: January 29, 1980Assignee: Union Carbide CorporationInventor: Mark A. Spivack
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Patent number: 4178435Abstract: An improved method for separating branched polyphenylene from a polymerization reaction mixture is disclosed which improves polymer properties. The contents of a high pressure polymerization reactor are discharged into one or more devolatilizing units which draw off and recycle low molecular weight unreacted species and separate high molecular weight branched polyphenylene.Type: GrantFiled: December 29, 1977Date of Patent: December 11, 1979Assignee: Standard Oil Company (Indiana)Inventors: Liong S. Tee, John C. Reindl