From Heterocyclic Reactant Containing As Ring Atoms Oxygen, Selenium Or Tellurium, E.g., Epoxy, Etc. Patents (Class 528/403)
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Patent number: 5254664Abstract: A reaction of the compound (A) having at least two 2-oxazoline groups with the compound (B) having at least two functional groups of one or a plural kind selected from the group consisting of an aromatic hydroxyl group, an amino group and a thiol group proceeds in a short period of time to produce a cured resin with superior mechanical strength, heat resistance and adhesion properties.Type: GrantFiled: December 31, 1991Date of Patent: October 19, 1993Assignee: Nippon Shokubai Co., Ltd.Inventors: Subhash C. Narang, Asutosh Nigam, Apparao Satyam, Susanna C. Ventura, Yoshihiro Arita
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Patent number: 5239042Abstract: There are disclosed dibenzofuran amorphous polymer comprising a recurring unit represented by following formula (II) and having a molecular weight giving a reduced viscosity of at least 0.2 dl/g as measured in the form of a 0.5% (W/V) solution in N-methyl-pyrrolidone at 25.degree. C., a process for producing said amorphous polymer, a dibenzofuran copolymer comprising, in addition to a recurring unit represented by following formula (II), at least one type of recurring unit represented by following general formula (III) in a specific proportion and having a molecular weight giving a reduced viscosity of at least 0.2 dl/g as measured in the form of a 0.5% (W/V) solution in concentrated sulfuric acid at 25.degree. C., and a process for producing said copolymer. ##STR1## wherein A is --O--, --CO--, --S--, --SO.sub.2 --, a divalent alkylene group or a single bond and n is a number of 0, 1 or 2.Type: GrantFiled: November 15, 1991Date of Patent: August 24, 1993Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Isaburo Fukawa, Tsuneaki Tanabe
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Patent number: 5235033Abstract: Alpha-morpholino subunits and polymer compositions composed of alpha-morpholino subunits are disclosed. These subunits can be linked together by uncharged linkages, one to three atoms in length, joining the morpholino nitrogen of one subunit to the 5' exocyclic carbon of an adjacent subunit. Each subunit contains a purine or pyrimidine base-pairing moiety effective to bind by hydrogen bonding to a specific base or base-pair in a target polynucleotide. The polymers of the present invention can be used in place of standard RNA or DNA oligomers for a number of standard laboratory procedures, for example, as probes in solid-phase systems and nucleic acid hybridization analyses. Further, the polymers of the present invention have potential use as therapeutic agents in anti-sense-type technologies.Type: GrantFiled: December 20, 1989Date of Patent: August 10, 1993Assignee: Anti-Gene Development GroupInventors: James E. Summerton, Dwight D. Weller, Eugene P. Stirchak
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Patent number: 5216122Abstract: Residual ethylene oxide is removed from poly(ethylene oxide) by the steps of adding to particles of high molecular weight poly(ethylene oxide) a finely divided solid particulate material which is capable of coating the poly(ethylene oxide) particles and impeding their agglomeration under conditions of heating, heating the particles of poly(ethylene oxide) at a temperature of at least 40.degree. C. and preferably which is near their crystalline melting point, and maintaining the temperature for a sufficient time to reduce the ethylene oxide in the particles of poly(ethylene oxide) to ten ppm or less. In one embodiment, the poly(ethylene oxide) is heated by holding the particles in a heated enclosure; in another, it is heated as a slurry in a liquid medium; in yet another, it is heated by warm gas in a gaseously-fluidized bed; and in a fourth, it is heated by microwave radiation.Type: GrantFiled: May 21, 1991Date of Patent: June 1, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Walter T. Reichle, Geoffrey A. D'Netto, Guy M. Troy, Meyer R. Rosen, Elke M. A. Clark
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Patent number: 5210179Abstract: Hydroxyterminated prepolymers, used in curing reactions with isocyanates to produce elastomers, are prepared by continuously adding over periods of 12-50 hours an oxetane monomer to a reaction mixture containing a diol initiator and a catalyst capable of catalyzing the cationic quasi-living cationic polymerization of the monomer, the rate of addition to maintain stoichiometric excess over the monomer. Polymerization is terminated by adding brine. Polymers of increased molecular weight and reduced impurity levels result.Type: GrantFiled: January 28, 1992Date of Patent: May 11, 1993Assignee: The Secretary of State for Defence in her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventor: Malcolm J. Stewart
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Patent number: 5204423Abstract: A process for the preparation of a polymer which is electrically conductive and which is based on polythiophene, the process including polymerizing thiophene in a reaction medium including thiophene, from 2.5 to 20 moles of an anhydrous ferric salt per mole of thiophene, from 0.04 to 1 liter of an alkyl halide per gram of thiophene, and from 0.1 to 5% by weight of water introduced into the reaction medium based on the amount of alkyl halide.Type: GrantFiled: June 21, 1991Date of Patent: April 20, 1993Assignee: Solvay & CieInventors: Claude Franquinet, Etienne Hannecart, Elise Destryker
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Patent number: 5204444Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are polycondensed with epoxy alcohols to form higher molecular weight polyethercyclicpolyols.Type: GrantFiled: April 14, 1992Date of Patent: April 20, 1993Assignee: Shell Oil CompanyInventors: Harry Frank, George C. Blytas, Anne H. Zuzich
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Patent number: 5198532Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are polycondensed with epihalohydrins to form higher molecular weight polyethercyclicpolyols.Type: GrantFiled: April 14, 1992Date of Patent: March 30, 1993Assignee: Shell Oil CompanyInventors: George C. Blytas, Harry Frank, Anne H. Zuzich
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Patent number: 5189134Abstract: Novel nonlinearly optically active polymers, well suited for electrooptical applications, are prepared by copolymerizing a first difunctional monomer with a second difunctional comonomer, with at least one of such difunctional monomers including a polar charge transfer moiety containing at least one electron acceptor group and at least one electron donor group (D), and further wherein the polymerizable functional groups are borne by the one or more electron donor groups (D).Type: GrantFiled: September 18, 1989Date of Patent: February 23, 1993Assignee: Rhone-Poulenc ChimieInventors: Gerard Mignani, Pascal Barthelemy, Remi Meyrueix
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Patent number: 5185444Abstract: A polymer composition is disclosed composed of morpholino subunit structures linked together by uncharged, chiral linkages, one-three atoms in length. These chiral linkages join the morpholino nitrogen of one subunit to the 5' exocyclic carbon of an adjacent subunit. Each subunit contains a purine or pyrimidine base-pairing moiety effective to bind by hydrogen bonding to a specific base or base-pair in a target polynucleotide.Type: GrantFiled: November 21, 1991Date of Patent: February 9, 1993Assignee: Anti-Gene Deveopment GroupInventors: James E. Summerton, Dwight D. Weller
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Patent number: 5166224Abstract: Non-crystalline elastomeric acetal polymers are disclosed which have ethylenic unsaturation in the polymer backbone. The polymers are synthesized by the ring-opening polymerization of 1,3-dioxolane, 1,3-dioxepane, and the cyclic formal of an ethylenically unsaturated diol having at least 4 adjacent carbon atoms in its main chain. The preferred cyclic formal is 4,7-dihydro-1,3-dioxepin. Because of the ethylenic unsaturation, the elastomeric acetal polymers can be vulcanized or cured with multifunctional vinyl monomers to produce elastomers with improved properties, such as better elasticity, decreased thermoplasticity and decreased solubility. The elastomeric acetals in any of their embodiments are particularly useful for blending with crystalline acetal polymers to improve the impact resistance of the crystalline acetal polymers.Type: GrantFiled: January 2, 1991Date of Patent: November 24, 1992Assignee: Hoechst Celanese Corp.Inventors: George L. Collins, William M. Pleban, Milton J. Hayes, Jr.
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Patent number: 5166315Abstract: A polymer composition effective to bind in a sequence-specific manner to a target sequence of a duplex polynucleotide containing different Watson-Crick basepair oreientaions. The composition includes an uncharged backbone with 5- or 6-membered cyclic backbone structures and selected bases attached to the backbone structures effective to hydrogen bond specifically with different oriented basepairs in the target sequence.Type: GrantFiled: June 20, 1991Date of Patent: November 24, 1992Assignee: Anti-Gene Development GroupInventors: James E. Summerton, Dwight D. Weller
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Patent number: 5162473Abstract: This invention relates to electrically conductive and non-conductive forms of poly(heterocyclic vinylenes) and to solutions of same. Another aspect of this invention relates to novel precursor polymers which can be converted into the poly(heterocyclic vinylenes) of this invention.Type: GrantFiled: July 7, 1987Date of Patent: November 10, 1992Assignee: Allied-SignalInventors: Kwan-Yue A. Jen, Ronald L. Elsenbaumer, Lawrence W. Shacklette
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Patent number: 5159040Abstract: This invention relates to electrically conductive and non-conductive forms of poly(heterocyclic vinylenes) and to solutions of same. Another aspect of this invention relates to novel precursor polymers which can be converted into the poly(heterocyclic vinylenes) of this invention.Type: GrantFiled: August 7, 1986Date of Patent: October 27, 1992Assignee: Allied-Signal Inc.Inventors: Kwan-Yue A. Jen, Ronald L. Elsenbaumer, Lawrence W. Shacklette
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Patent number: 5120827Abstract: An improved process for producing poly(glycidyl nitrate) having a functionality substantially equivalent to the hydroxy functionality of the initiator employed in which a catalyst-initiator complex is reacted with glycidyl nitrate and wherein the ratio of mols catalyst/mols hydroxyls in the initiator is <1:1, the gylcidyl nitrate monomer is added to the catalyst-initiator complex reaction mixture at a rate in which the monomer is used up (reacted) essentially as fast as it is added, and the reaction temperature is maintained at a temperature within the range of from about 10.degree. to 25.degree. C.Type: GrantFiled: August 2, 1990Date of Patent: June 9, 1992Assignee: Thiokol CorporationInventors: Rodney L. Willer, Robert S. Day, Alfred G. Stern
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Patent number: 5118819Abstract: A process for the preparation of a carene-dienophile diadduct in high yield is provided. Delta-3-carene is reacted with a Diels-Adler dienophile, preferably maleic anhydride, at a dienophile:carene molar ratio of at least 1.5:1 and a temperature of at least 150.degree. C. The diadduct produced by the reaction of delta-3-carene and a Diels Alder dienophile, preferably maleic anhydride, is useful as a curing agent in epoxy resin systems.Type: GrantFiled: April 3, 1991Date of Patent: June 2, 1992Assignee: Union Camp CorporationInventors: David W. Parker, Walter C. Frank
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Patent number: 5109109Abstract: A process for producing aromatic polymers which comprise subjecting halogenated aromatic compounds or combinations of aromatic compounds and polyhalogenated aromatic compounds to dehydrohalogenation reaction in the presence of a metal halide for condensation. The halogenated aromatic compounds, aromatic compounds and polyhalogenated aromatic compounds include not only those compounds having benzene nucleus or nuclei, but also compounds of aromatic character such as heterocyclic five-membered compounds. A high degree of polymerization is attained according to the process.Type: GrantFiled: December 12, 1990Date of Patent: April 28, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shu Hotta, Mamoru Soga, Nobuo Sonoda
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Patent number: 5091501Abstract: This invention provides a process for producing 2H-1-benzopyran-2-ones (coumarins) from optionally-substituted o-halocinnamic acids or esters under polyester-forming conditions. When the coumarins contain appropriately reactive functional groups, and desired monomers are present, a colored or UV-absorbing coumarin/polyester copolymer is provided in one step.Type: GrantFiled: October 4, 1990Date of Patent: February 25, 1992Assignee: Eastman Kodak CompanyInventors: Max A. Weaver, Samuel D. Hilbert, Wayne P. Pruett, Clarence A. Coates, Jr.
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Patent number: 5047376Abstract: The present invention relates to activated curing combinations for organic cationically polymerizable materials. The curing combinations are obtainable by activating a solution or a dispersion of an iron/arene salt and a polycarboxylic acid, an anhydride based on a polycarboxylic acid, or a polyisocyanate by heating or by irradiation with actinic radiation. The curable compositions containing these activated curing combinations can be used as sheathing or encapsulating materials for electronic components.Type: GrantFiled: July 27, 1989Date of Patent: September 10, 1991Assignee: Ciba-Geigy CorporationInventors: Dieter Baumann, Kurt Meier, Werner Margotte, Beat Muller
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Patent number: 5041505Abstract: Copolymers of 1,3-dioxolane and 1,3-dioxepane in the form of non-crystalline high molecular weight elastomers having low glass transition temperatures (Tg) are disclosed. Such copolymers are formed by polymerizing from about 40 to about 60 mol percent of 1,3-dioxolane and correspondingly from about 60 to about 40 mol percent of 1,3-dioxepane under substantially anhydrous conditions in the presence of a cationic polymerization catalyst, e.g., a strong Bronsted acid such as trifluoromethanesulfonic acid. Blends of such non-crystalline copolymers with crystalline oxymethylene polymers are also disclosed.Type: GrantFiled: September 13, 1989Date of Patent: August 20, 1991Assignee: Hoechst Celanese Corp.Inventors: George L. Collins, William M. Pleban, Milton J. Hayes
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Patent number: 5034506Abstract: A polymer composition is disclosed composed of morpholino subunit structures which are linked together by uncharged, achiral linkages. These linkages are one to three atoms in length, joining the morpholino nitrogen of one subunit to the 5' exocyclic carbon of an adjacent subunit. Each subunit contains a purine or pyrimidine base-pairing moiety effective to bind by hydrogen bonding to a specific base or base-pair in a target polynucleotide.Type: GrantFiled: December 20, 1989Date of Patent: July 23, 1991Assignee: Anti-Gene Development GroupInventors: James E. Summerton, Dwight D. Weller
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Patent number: 5030708Abstract: Provided are novel methine colorants derived from acetaldehyde, 1,3-dihydro-7-methoxycarbonyl-1,1,3-trimethyl-2H-benz[e]indol-2-ylidine and polyester compositions and concentrates having these colorants copolymerized therein. Also provided are novel intermediates useful for making the colorants.Type: GrantFiled: December 17, 1990Date of Patent: July 9, 1991Assignee: Eastman Kodak CompanyInventors: James J. Krutak, William W. Parham, Clarence A. Coates, Jr., Terry A. Oldfield, Wayne P. Pruett, Samuel D. Hilbert, Max A. Weaver
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Patent number: 5008367Abstract: What is described herein are polymerizable pyrrolidonyl 4,5-unsubstituted oxazoline monomers, homopolymers thereof, and copolymers with other monomers. A preferred polymerizable monomer compound is 2-(1-methyl-2-pyrrolidon-4-yl)-2-oxazoline. The polymers herein have excellent hydrotropic properties thus increasing the water solubility of organic compounds previously considered as water insoluble, and exhibit complexation with water soluble cosolutes.Type: GrantFiled: March 19, 1990Date of Patent: April 16, 1991Assignee: GAF Chemicals CorporationInventors: Gary Dandreaux, Robert B. Login, John J. Merianos, Paul Garelick, Krystyna Plochocka, Max Negrin, Jenn S. Shih
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Patent number: 4994551Abstract: Novel, semi-crystalline depsipeptide polymers and copolymers particularly suitable for use in fabricating bioabsorbable medical implant devices such as sutures or clips and obtained through ring-opening polymerization of certain 3-substituted-2,5-morpholinediones prepared by reacting a naturally occurring alpha-amino acid with an alpha-halo acid chloride in inert solvent in the presence of an acid acceptor.Type: GrantFiled: December 21, 1989Date of Patent: February 19, 1991Assignee: Pfizer Inc.Inventors: Fu-Ning Fung, Raymond C. Glowaky
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Patent number: 4977201Abstract: The present invention provides a polyvinyl chloride plastisol composition characterized by containing a specified epoxy resin, a blocked isocyanate and, if necessary, a latent curing agent for an epoxy resin as tackifiers. This plastisol composition is excellent in storage stability and can strongly adhere to various metals and various undercoate of metals (such as electro-deposit) by baking even at a relatively low temperature to give a coating which is free from blowing and exhibits excellent adhesion after the immersion in hot water or the heating. Therefore, the composition is useful as a body sealer or undercoat for an automotive body.Type: GrantFiled: February 24, 1989Date of Patent: December 11, 1990Assignees: Asahi Denka Kogyo K.K., A,C,R. Co., Ltd.Inventors: Akio Ogawa, Masahiko Shimada, Kazuhiko Ando
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Patent number: 4977235Abstract: Novel polyarylate polymers comprise alternating moieties derived from an aromatic dicarboxylic acid halide, with moieties derived from a hydroxyaryl-substituted 1,6-diaza [4.4] spirodilactam compound and, optionally, with moieties derived from a di(hydroxyphenyl) compound. The polyarylate polymers are thermoplastic polymers characterized by relatively high glass transition temperatures.Type: GrantFiled: December 21, 1989Date of Patent: December 11, 1990Assignee: Shell Oil CompanyInventor: Pen-Chung Wang
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Patent number: 4958005Abstract: A fluorine-containing composition represented by formula (I) ##STR1## wherein X represents a group containing a polyfluoroaliphatic group having from 3 to 26 carbon atoms; R represents a hydrogen atom or an aliphatic group having from 1 to 3 carbon atoms; n represents an integer of from 2 to 3; p represents an integer of from 1 to 100; and Y represents a group represented by formula (II) or formula (III) ##STR2## wherein R represents a hydrogen atom or an aliphatic group having from 1 to 3 carbon atoms; n represents an integer of from 2 to 3; and Z represents an iodine atom, a sulfonate group, or a sulfate group, ##STR3## wherein R represents a hydrogen atom or an aliphatic group having from 1 to 3 carbon atoms; n represents an integer of from 2 to 3; and Z.sup.1 represents an iodine atom, a bromine atom, a chlorine atom, or a hydroxyl group; and a process for preparing the same.Type: GrantFiled: September 20, 1988Date of Patent: September 18, 1990Assignee: Daikin Industries, Ltd.Inventors: Takeo Saegusa, Masatoshi Miyamoto, Yoshiyuki Sano
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Patent number: 4946931Abstract: Polymers are provided that are useful for making biodegradable sustained release agent dispensers and which contain at least one of the following mer units (I) and (II) ##STR1## wherein X is a quadrivalent organic grouping, A and B are hydrogen or lower alkyl, and R is hydrocarbyl or oxyhydrocarbyl of 1 to 14 carbon atoms and, if oxyhydrocarbyl, containing 1 to 4 oxy groups, and may be either aliphatic or aryl, unsubstituted or substituted with one or more lower alkyl, amino, nitro or halogen moieties. Methods of synthesizing the novel polymers are also provided, as biodegradable beneficial agent dispensers prepared using the novel polymers.Type: GrantFiled: June 14, 1989Date of Patent: August 7, 1990Assignee: Pharmaceutical Delivery Systems, Inc.Inventors: Jorge Heller, Steve Y. W. Ng, Donald W. H. Penhale
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Patent number: 4933396Abstract: The present invention provides a method for making primary amine terminated linear polyethers of molecular weight above about 3500 which have virtually no contamination from in-chain secondary amine functionalities or amine-terminated tertiary amine side-chains. This method involves the production of novel intermediates.The invention also provides purely linear polyether-polyurea block copolymers formed by chain extension of the primary amine terminated linear polyethers.Type: GrantFiled: May 18, 1989Date of Patent: June 12, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles M. Leir, Jerome J. Hoffman, John E. Stark
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Patent number: 4933426Abstract: Colored condensation polymers useful as replacements for waxes in a thermal wax transfer process, said polymers being obtained by reacting a polymerizable lactone or a hydroxyalkanoic acid with a dye containing at least one active hydrogen atom.Type: GrantFiled: March 15, 1989Date of Patent: June 12, 1990Assignee: Imperial Chemical Industries PLCInventors: Robert D. McClelland, Brian Parton
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Patent number: 4929693Abstract: A novel photochromic compound and a polymer comprising the photochromic compound are disclosed. The novel photochromic compound of the present invention is a spirooxazine compound having an addition polymerizable organic functional group or a ring-opening polymerizable organic functional group therein.Type: GrantFiled: February 2, 1988Date of Patent: May 29, 1990Assignee: Toray Industries, Inc.Inventors: Ryojiro Akashi, Takashi Taniguchi
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Patent number: 4929712Abstract: A polyacetal resin composition is prepared by melt-kneading a polyacetal resin (A) (99 to 40 wt. %) with a thermoplastic polyurethane (B) (1 to 60 wt. %) in the presence of a polyisocyanate compound, a polyisothiocyanate compound or a modification thereof (C) in an amount of 0.1 to 10 wt. % based on the total of A and B.Type: GrantFiled: June 26, 1989Date of Patent: May 29, 1990Assignee: Polyplastics Co., Ltd.Inventors: Noriyuki Sugiyama, Mitsuhiro Mochizuki
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Patent number: 4916209Abstract: Novel, semi-crystalline depsipeptide polymers and copolymers particularly suitable for use in fabricating bioabsorbable medical implant devices such as sutures or clips and obtained through ring-opening polymerization of certain 3-substituted-2,5-morpholinediones prepared by reacting a naturally occurring alpha-amino acid with an alpha-halo acid chloride in inert solvent in the presence of an acid acceptor.Type: GrantFiled: December 23, 1987Date of Patent: April 10, 1990Assignee: Pfizer Inc.Inventors: Fu-Ning Fung, Raymond C. Glowaky
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Patent number: 4914176Abstract: Novel thermoplastic polymers of relatively high glass transition temperatures are characterized by five-carbon moieties having a keto group in the 3-position alternating with bis(benzoheterocyclic) moieties. The polymers are produced by reaction of a keto-C.sub.5 source, selected from 4-oxoheptanedioic acid compounds or a 1,6-dioxa [4.4] spirodilactone, with a bis(ortho-phenylene amine) compound. Further cyclization of the initial polymer product or reaction of a bis(ortho-phenylenediamine) provides a polymer having a hexacyclic repeating unit.Type: GrantFiled: March 17, 1989Date of Patent: April 3, 1990Assignee: Shell Oil CompanyInventor: Pen C. Wang
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Patent number: 4910287Abstract: The present disclosure is concerned with catalyzing the reactivity of carboxyl group bearing polyesters such as terephthalic acid, isophthalic acid, neophentyl glycol based polyesters which are suitable for use in powder coating formulations with epoxide compounds. An enhanced uniformity of catalysis is obtained without a degradation of color by adding 1-methyl imidazole to a liquid melt of the polyester. In a preferred embodiment between 0.03 and 0.3 weight percent of the 1-methyl imidazole is added to a molten polyester which has an acid number between 10 and 100, a 200.degree. C. I.C.I. cone and plate viscosity between 20 and 70 Poise, and a DSC determined glass transition temperature of at least about 40.degree. C. when the polyester is at a sufficiently elevated temperature to have I.C.I. plate and cone viscosity of less than about 70 Poise.Type: GrantFiled: January 6, 1989Date of Patent: March 20, 1990Assignee: Ruco Polymer CorporationInventors: John J. McLafferty, Sue L. Wang
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Patent number: 4910285Abstract: Novel polyarylate polymers comprise alternating moieties derived from an aromatic dicarboxylic acid halide, from a hydroxyaryl-substituted 1,6-diaza [4.4] spirodilactam and, optionally, from a di(hydroxyphenyl) compound. The polyarylate polymers are thermoplastic polymers characterized by relatively high glass transition temperatures.Type: GrantFiled: February 23, 1989Date of Patent: March 20, 1990Assignee: Shell Oil CompanyInventor: Pen C. Wang
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Patent number: 4880906Abstract: A finishing agent for finishing fibers or fiber products is disclosed. The agent is a mixture of the following components:(a) 34 to 99% by weight of a polymer of the general formula ##STR1## in which R.sup.1 is a z-hybric aliphatic alcohol, z=2 to 9, m=20 to 75, n=0 to 10, p=0 to 3,(b) 0 to 55% by weight of a copolymer, obtained by copolymerization of(b.sub.1) one mole of a macromonomer of the general formula ##STR2## in which q=5 to 75, r=0 to 10, s=0 to 3, with (b.sub.2) 2 to 12 moles of a vinyl ester of the general formula CH.sub.2 .dbd.CHOCOR.sup.2, in which R.sup.2 is an alkyl group with 1 to 4 carbon atoms,(b.sub.3) 1 to 6 moles of N-vinylpyrrolidone,(b.sub.4) 0 to 6 moles of an acrylate or methacrylate ester of the general formula CH.sub.3 .dbd.CR.sup.3 --COOR.sup.4, in which R.sup.3 .dbd.H or CH.sub.3, R.sup.4 is an alkyl group with 1 to 4 carbon atoms, the quotient of the average molecular weight of the monomer (b.sub.1) and the number of moles of the monomers (b.sub.2), (b.sub.3) and (b.sub.Type: GrantFiled: July 15, 1988Date of Patent: November 14, 1989Assignee: Th. Goldschmidt AGInventors: Eberhard Esselborn, Jurgen Fock
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Patent number: 4879419Abstract: Hydroxyl terminated polyepichlorohydrin having a polydispersity of less than 1.2 and a molecular weight of at least 2000, and method of preparation using stannic chloride and strong carboxylic acid co-catalysts.Type: GrantFiled: July 1, 1985Date of Patent: November 7, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventor: Birger Johannessen
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Patent number: 4857607Abstract: The invention relates to polycycloacetals of formula I ##STR1## wherein n is an integer from 1 to 500, x and y are each independently of the other 0 or 1, R.sup.1 is a carbon atom or a tetravalent hydrocarbon radical having a molecular weight not greater than 1000 and which can additionally contain ether oxygen atoms or oxygen atoms in hydroxyl, carbonyl or epoxy groups, and R.sup.2 is a tetravalent hydrocarbon radical derived from a dialdehyde or a diketone.The polycycloacetals can be used together with conventional hardeners and/or curing catalysts for epoxy resins for the fabrication of cross-linked (cured) products having good properties, especially having excellent fastness to solvents, light and weathering.Type: GrantFiled: May 18, 1988Date of Patent: August 15, 1989Assignee: Ciba-Geigy CorporationInventors: Jacques-Alain Cotting, Alfred Renner
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Patent number: 4833213Abstract: The present invention provides a method for making primary amine terminated linear polyethers of molecular weight above about 3500 which have virtually no contamination from in-chain secondary amine functionalities or amine-terminated tertiary amine side-chains. This method involves the production of novel intermediates.The invention also provides purely linear polyether-polyurea block copolymers formed by chain extension of the primary amine terminated linear polyethers.Type: GrantFiled: June 26, 1987Date of Patent: May 23, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles M. Leir, Jerome J. Hoffman, John E. Stark
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Patent number: 4785070Abstract: A novel class of heterocyclic polymers and copolymers containing the 2-imidazolin-5-one ring structure is described. These polymers are prepared by reaction of bisazlactones and diamines, with or without suitable condensation monomers; the resultant polyamides are then thermally cyclodehydrated in the presence of a catalyst to produce the imidazolinone-containing polymers. Many of the poly(imidazolinones) are water soluble and therefore find utility in various aspects of water treatment, or in paper or fabric sizing.Type: GrantFiled: February 17, 1987Date of Patent: November 15, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jerald K. Rasmussen, Alan R. Katritzky, Larry R. Krepski, Howell K. Smith, II, Steven M. Heilmann, Kumars Sakizadeh
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Patent number: 4766198Abstract: This invention relates to novel conductive thienylene- and furanylene-vinylene polymers and to a process for their preparation. The polymer can be formed into coherent films in which no voids are visible up to magnifications of up to 5000 times. These polymers have band gaps below 2 eV which makes them more suitable than conventional polyphenylene and poly(phenylene vinylene) polymers for use e.g. in batteries.Type: GrantFiled: May 19, 1987Date of Patent: August 23, 1988Assignee: The British Petroleum Company p.l.c.Inventors: Kevin Harper, William J. W. Watson
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Patent number: 4754028Abstract: Novel 3,4,5-Tri(selena- or tellura-)tricyclo[5.2.1.0..sup.2,6 ]decanes and derivatives are prepared in high yield by contacting a bicyclo[2.2.1]hept-2-ene compound and selenium or tellurium in the presence of a solvent, and a catalyst.Type: GrantFiled: September 24, 1984Date of Patent: June 28, 1988Assignee: The Dow Chemical CompanyInventor: Stoil K. Dirlikov
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Patent number: 4737550Abstract: Bridged dense star polymers having terminal group densities greater than conventional extended star polymers exhibit greater and more uniform reactivity than their corresponding conventional star polymers. For example, a third generation, hydroxy-terminated polyether dense star polymer can be prepared from pentaerythrityltetrabromide and 4-hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]-octane which has a molecular volume less than 80 percent of the volume of a conventional extended star polymer made from similar materials. This dense star polymer can then be bridged by reacting it with a suitable difunctional reactant such as toluene diisocyanate. Such polymers of dense star polymers are useful as demulsifiers for oil/water emulsions, wet strength agents in the manufacture of paper, proton scavengers, calibration standards for electron microscopy, and agents for modifying viscosity in aqueous formulations such as paints.Type: GrantFiled: December 8, 1986Date of Patent: April 12, 1988Assignee: The Dow Chemical CompanyInventor: Donald A. Tomalia
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Patent number: 4694066Abstract: This invention provides novel polyoxyalkylene polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices.Type: GrantFiled: January 24, 1986Date of Patent: September 15, 1987Assignee: Celanese CorporationInventors: Ronald N. DeMartino, Hyun-Nam Yoon, James B. Stamatoff, Alan Buckley
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Patent number: 4690985Abstract: Star/comb-branched polyamides having good resistance to degradation upon exposure to shear are prepared by reacting polyvalent core compounds such as tribromoneopentyl alcohol with an oxazoline such as 2-ethyl-2-oxazoline to provide the desired polyamide. The polyamides are readily hydrolyzed with acid such as hydrochloric acid to form star/comb-branched polyamines. The polyamides and the polyamines are useful as viscosity enhancing agents in such applications as paints, mobility control agents and hydraulic fluids.Type: GrantFiled: March 7, 1986Date of Patent: September 1, 1987Assignee: The Dow Chemical CompanyInventors: Donald A. Tomalia, Mark J. Hall
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Patent number: 4667012Abstract: A novel class of heterocyclic polymers and copolymers containing the 2-imidazolin-5-one ring structure is described. These polymers are prepared by reaction of bisazlactones and diamines, with or without suitable condensation monomers; the resultant polyamides are then thermally cyclodehydrated in the presence of a catalyst to produce the imidazolinone-containing polymers. Many of the poly(imidazolinones) are water soluble and therefore find utility in various aspects of water treatment, or in paper or fabric sizing.Type: GrantFiled: December 14, 1984Date of Patent: May 19, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Jerald K. Rasmussen, Alan R. Katritzky, Larry R. Krepski, Howell K. Smith, II, Steven M. Heilmann, Kumars Sakizadeh
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Patent number: 4658011Abstract: A process for the polymerization of oxazolines and copolymerization of oxazolines with epoxy resins in the presence of catalytic amounts of cationic complexes of alkali metals and alkaline earth metals is disclosed.Type: GrantFiled: August 15, 1985Date of Patent: April 14, 1987Assignee: Ashland Oil, Inc.Inventor: Anil B. Goel
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Patent number: 4654416Abstract: Novel polyamide containing polymers are obtained by the homopolymerization of a bicyclic amide acetal with a cationic catalyst such as lithium fluoborate.Type: GrantFiled: November 22, 1985Date of Patent: March 31, 1987Assignee: Ashland Oil, Inc.Inventor: Anil B. Goel
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Patent number: 4640748Abstract: A polymer having an isothianaphthene structure represented by the formula (Ia) and/or Ib): ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom or a hydrocarbon residue having 1 to 5 carbon atoms such as methyl, methoxy and thiomethyl, with the proviso that R.sup.1 and R.sup.2 may link together to form, along with the benzene ring, a fused ring which is naphthalene; X is sulfur, selenium or tellurium; Y.sup.- represents an anion of an electrolyte; z represents a number from 0.01 to 1 showing a ratio of the anion per mol of a monomer; and n represents a number of from 5 to 500 showing a degree of polymerization.Type: GrantFiled: May 22, 1985Date of Patent: February 3, 1987Assignee: The Regents of the University of CaliforniaInventors: Fred Wudl, Masao Kobayashi, Alan Heeger