Mixed With Aldehyde Or Aldehyde Derivative Or Polymer Derived Therefrom Patents (Class 525/414)
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Patent number: 11859049Abstract: The present disclosure relates to a method for preparing a polyalkylene carbonate. More specifically, provided is a method for preparing a polyalkylene carbonate in which after polymerization of polyalkylene carbonate, a mixture from which unreacted carbon dioxide and residual catalyst have been removed is charged into a stripper to remove the unreacted epoxide compound, and then heat-exchanged before removing the solvent to increase the temperature of the mixture stream to the maximum level, which is subjected to a heating step, following by a solvent removal step, whereby the amount of steam required in the heating step is reduced, side reactions due to unreacted epoxide compounds are prevented, and steam energy can be reduced in the solvent removal step.Type: GrantFiled: July 7, 2020Date of Patent: January 2, 2024Assignee: LG Chem, Ltd.Inventors: Woosung Hwang, Dongmin Kim, Seung Young Park, Mi Kyung Kim, Joon Ho Shin, Wonseok Kim
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Patent number: 9447210Abstract: Provided are an olefin composition, filler and an optoelectronic device. One illustrative olefin composition may be effectively used as a filling material for various optoelectronic devices.Type: GrantFiled: April 26, 2013Date of Patent: September 20, 2016Assignee: LG CHEM, LTDInventors: Beom Doo Seo, Hoon Chae, Choong Hoon Lee, Jong Joo Ha, Sung Ho Choi
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Patent number: 8686090Abstract: The thermosetting, non-polymeric coating composition includes at least one monomeric material having a plurality of carbamate and/or urea groups, at least one crosslinker reactive with the at least one monomeric material, and a sag control agent that is a crystalline reaction product of an amine and an isocyanate.Type: GrantFiled: December 10, 2003Date of Patent: April 1, 2014Assignee: BASF Coatings GmbHInventors: Marvin L. Green, Swaminathan Ramesh, Walter H. Ohrbom
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Patent number: 8182734Abstract: Disclosed are poly(hydroxyalkanoic acid) resin compositions comprising poly(hydroxyalkanoic acid), such as polylactic acid, and a polyoxymethylene. Also disclosed are articles such as films, sheets and thermoformed containers comprising the compositions.Type: GrantFiled: June 11, 2009Date of Patent: May 22, 2012Assignee: E. I. du Pont de Nemours and CompanyInventor: Julius Uradnisheck
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Publication number: 20110274733Abstract: Embodiments of the present invention provides medical devices comprising poly(hydroxyalkanoates) and agents.Type: ApplicationFiled: July 15, 2011Publication date: November 10, 2011Inventors: Syed F.A. Hossainy, Stephen D. Pacetti
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Patent number: 7632626Abstract: There is provided an anti-reflective coating forming composition for lithography comprising a polymer having an ethylenedicarbonyl structure and a solvent; an anti-reflective coating formed from the composition; and a method for forming photoresist pattern by use of the composition. The anti-reflective coating obtained from the composition can be used in lithography process for manufacturing a semiconductor device, has a high preventive effect for reflected light, causes no intermixing with photoresists, and has a higher etching rate than photoresists.Type: GrantFiled: April 13, 2006Date of Patent: December 15, 2009Assignee: Nissan Chemical Industries, Ltd.Inventor: Rikimaru Sakamoto
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Publication number: 20080255316Abstract: The invention relates to new compositions having good binder, wetting, and dispersing properties for virtually foam-free aqueous and also solventborne and solvent-free pigment preparations.Type: ApplicationFiled: January 25, 2006Publication date: October 16, 2008Applicant: DEGUSSA GmbHInventors: Andreas Wenning, Dietmar Loest
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Patent number: 7335699Abstract: A description is given of water-soluble aminoplast ether copolymers of the following structural type: wherein Z is a glycoluril central unit, B is a radical of an essentially water-insoluble polymer and R1 is a radical of a hydrophilic organic compound. The ratio R1:B is selected within a range of about 1.5 to 4:1 and the overall mass of the water-soluble aminoplast ether copolymer is from about 2000 to 50 000 g/mol such that the copolymer is soluble in water and may be used as a dispersant for e.g. pigments in polar solvents, e.g. water.Type: GrantFiled: December 17, 2002Date of Patent: February 26, 2008Assignee: Sud-Chemie AGInventors: Klaus Dziwok, Inge Krämer, Norbert Schall, Helmut Coutelle, Sabine Huth, Alan Steinmetz, Thadeus Schauer, Heinz Greisiger, Mark Entenmann
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Patent number: 7268182Abstract: A coating composition comprising a film forming binder of a. at least one polymer that has pendant groups, such as, hydroxyl, carboxyl, glycidyl, amine, amide, silane and mixtures thereof that are reactive with a crosslinking component and the polymer has a glass transition temperature (Tg) of 10 to 80° C.; b. a polytrimethylene ether diol having a Mn (number average molecular weight) of 500 to 5,000; and c. a crosslinking component, such as, organic polyisocyanates, melamine formaldehydes, alkylated melamine formaldehydes, benzoquanamine formaldehyde, urea formaldehyde, polyepoxides, silane resin and any mixtures thereof; wherein the coating composition can be used as a clear coating composition and can contain pigments and may be used as a pigmented top coating, a pigmented base coating, a primer or primer surfacer coating and is useful for coating automobile and truck bodies and parts, industrial equipment, appliances and exterior structures.Type: GrantFiled: March 19, 2004Date of Patent: September 11, 2007Assignee: E. I. du Pont de Nemours & CompanyInventors: Hari Babu Sunkara, Patricia Mary Ellen Sormani, James William O'Neil, Joseph V. Kurian
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Patent number: 7030263Abstract: A method of preparing a carbamate or urea-functional compound is described comprising the step of reacting a lactone or hydroxy carboxylic acid with a compound (A) comprising a carbamate or urea group or a group that can be converted to a carbamate or urea group, and an active hydrogen group capable of reacting with the hydroxy carboxylic acid or in a ring-opening reaction with a lactone. The compound thus prepared is useful in curable compositions.Type: GrantFiled: October 25, 2002Date of Patent: April 18, 2006Assignee: BASF CorporationInventors: Brian D. Bammel, John D. McGee, Walter H. Ohrbom, Todd A. Seaver, Gregory G. Menovcik, Paul J. Harris, John W. Rehfuss
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Patent number: 7001959Abstract: Copolymers are described containing blocks of the structural repeat units of the formula I and blocks containing structural units of the formula II [—O—CH2—]x,??(I) [—O—R1—],??(II) where R1 is a divalent radical derived from a hydroxy-terminated aliphatic or cycloaliphatic oligomer or polymer which, where appropriate, has ether groups and/or carbonyloxy groups in the chain, and x is a whole number, at least 10. The copolymers may be used for producing moldings.Type: GrantFiled: November 3, 2003Date of Patent: February 21, 2006Assignee: Ticona GmbHInventors: Karl-Friedrich Mück, Klaus Kurz, Michael Hoffmockel
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Patent number: 6861479Abstract: Production of a porous layer includes using a composition which includes a first polymer component and a second polymer component, the first polymer component being polyhydroxyamide and/or polybenzoxazole and stable at a temperature at which the second polymer component decomposes and volatilizes. If the composition is heated to the decomposition temperature of the second polymer component, the second component volatilizes and a porous layer that contains the first component remains.Type: GrantFiled: June 26, 2002Date of Patent: March 1, 2005Assignee: Infineon Technologies AGInventor: Recai Sezi
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Patent number: 6780813Abstract: The invention relates to an improved method of producing double-metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, in which the DMC catalyst dispersion is produced using a mixing nozzle, preferably a jet disperser. The DMC catalysts produced in this way have an increased activity in polyether polyol production, reduced particle size and narrower particle size distribution.Type: GrantFiled: May 30, 2002Date of Patent: August 24, 2004Assignee: Bayer AktiengesellschaftInventors: Jörg Hofmann, Bernd Klinksiek, Stephan Ehlers, Thorsten Fechtel, Franz Föhles, Pieter Ooms
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Patent number: 6767987Abstract: This invention provides a hydroxyalkyl(meth)acrylate composition modified by a small amount of lactones in which a proportion of monomers having two or more continuous chains of lactone is less than 50% (area % by GPC). This invention also provides methods for synthesizing such a composition. This invention also provides an acrylic polyol resin comprising the hydroxyalkyl(meth)acrylate composition, a carboxylic group-containing acrylate composition modified by a small amount of lactones, and a polyester unsaturated monomer modified by a small amount of lactones. Uses of these materials in curable resins, coating compositions, and finishing agents are also provided.Type: GrantFiled: October 12, 2001Date of Patent: July 27, 2004Assignee: Daicel Chemical Industries, Ltd.Inventor: Akira Okazaki
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Patent number: 6657016Abstract: A polyester resin composition comprising 50 equivalents/ton or more of an aromatic ring in the resin and at least one thermosetting resin selected from the group consisting of melamine resin, urea resin, benzoguanamine resin and phenol resin. The aromatic ring in the polyester resin has a phenolic hydroxyl group and at least one of ortho-position and para-position of the aromatic ring to the phenolic hydroxyl group is a hydrogen atom. The resin composition has excellent toughness at ambient temperature and heat resistance.Type: GrantFiled: March 14, 2002Date of Patent: December 2, 2003Assignee: Toyo Boseki Kabushiki KaishaInventor: Takeshi Yatsuka
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Patent number: 6492462Abstract: The rheological properties of a crosslinkable resin system are modified by the presence of a side chain crystalline (SCC) polymer (or a similar crystalline polymer which melts over a narrow temperature range). The polymer dissolves in the curable system at temperatures above the melting point of the crystalline polymer (Tp), but when the system is then cooled to a temperature below Tp, at least partially forms a separate phase in the curable system. Below Tp, this separate phase substantially increases the viscosity of the curable system (i.e. makes it thicker than the same system without the crystalline polymer). This is particularly valuable for sheet molding composites (SMCs) in which the increase in viscosity makes the composites less tacky, and for dry film resists (DFRs). Above Tp, the curable system containing the dissolved crystalline polymer has a viscosity which is substantially less than its viscosity below Tp.Type: GrantFiled: December 19, 2000Date of Patent: December 10, 2002Assignee: Landec CorporationInventors: Steven P. Bitler, David D. Taft, Ray F. Stewart
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Patent number: 6423788Abstract: A curable coating composition is described comprising (A) a carbamate- or urea-functional compound that is the reaction product of a mixture comprising (1) a compound comprising a carbamate or urea group or a group that can be converted to carbamate or urea, and a hydroxyl functional group that is the reaction product of (a) a compound comprising a carbamate or urea group or a group that can be converted to a carbamate or urea group, and an active hydrogen group that is reactive with a lactone ring or a hydroxy carboxylic acid, and (b) a lactone or a hydroxy carboxylic acid, and (2) a compound that is reactive with hydroxyl groups on a plurality of molecules of compound (A)(1), but that is not reactive with the carbamate or urea groups on compound (A)(1), (B) a compound comprising a plurality of groups that are reactive with carbamate or urea.Type: GrantFiled: October 6, 1995Date of Patent: July 23, 2002Assignee: BASF CorporationInventors: Brian D. Bammel, John D. McGee, Walter H. Ohrbom, Todd A. Seaver, Paul J. Harris, John W. Rehfuss
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Patent number: 6291073Abstract: The present invention provides a curable coating composition that includes at least three components. The coating composition includes a component (a) having at least one carbamate group or urea group and having a lactone or hydroxy carboxylic acid moiety. The second component (b) of the coating composition is the reaction product of a polyol having at least one branch point, i.e., carbon bonded to at least three other carbons, with a lactone or hydroxy carboxylic acid. The third component of the coating composition is a curing agent that is reactive with the first two components. Preparation of coated articles using the compositions of the invention is also disclosed.Type: GrantFiled: October 28, 1999Date of Patent: September 18, 2001Assignee: BASF CorporationInventors: Walter H Ohrbom, Paul J. Harris
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Patent number: 6281298Abstract: The present invention relates to water-based pressure sensitive adhesives comprising at least one water-based polymer and at least one aminoplast resins such as melamine-formaldehyde resins, urea-formaldehyde resins, alkylated melamine-formaldehyde resins and combinations thereof. More particularly, the invention relates to water-based pressure sensitive adhesives comprising the reaction product of aqueous polymer dispersions and water dispersible melamine-formaldehyde resins. The pressure sensitive adhesives are characterized as having enhanced bonding characteristics including loop tack, peel strength, and shear strength making them particularly useful for the manufacture of dry-bonded laminates, tapes, labels, medical patches and devices, flexible packages, furnace ducts, exterior insulating finish system and the like.Type: GrantFiled: August 20, 1999Date of Patent: August 28, 2001Assignee: H. B. Fuller Licensing & Financing Inc.Inventor: George A. Papsin, Jr.
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Patent number: 6063286Abstract: Process for preparing fine-particle, water-insoluble polymers of aziridines by polymerizing aziridines, preferably ethylenimine, in the presence of crosslinkers which contain at least two functional groups, and in at least one ether, and also modified, water-insoluble polymers of aziridines which can be obtained by reacting fine-particle, water-insoluble, crosslinked polymers of aziridines, in aqueous medium, with carbon disulfide or formaldehyde and a nucleophilic agent from the group consisting of alkali metal cyanides, primary amines, secondary amines, alkali metal sulfites and alkali metal phosphites, and use of the modified and non-modified fine-particle, water-insoluble polymers for immobilizing active compounds, as absorbents for aldehydes, ketones and acids, and also for removing heavy metal ions from wastewaters.Type: GrantFiled: October 22, 1998Date of Patent: May 16, 2000Assignee: BASF AktiengesellschaftInventors: Ulrich Steuerle, Wolfgang Reuther, Hubert Meixner, Michael Ehle, Thomas Greindl, Rainer Betz
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Patent number: 5854385Abstract: A coating composition is disclosed that includes:(A) a multi-functional compound having(1) at least one carbamate or urea functional group,(2) at least one other functional group which may or may not be carbamate or urea, and(3) at least one hydrogen bond acceptor group that is not also a hydrogen bond donor group, with the proviso that said multi-functional compound is other than an acrylic polymer or oligomer having carbamate functional or urea groups appended to the acrylic backbone through acrylic ester side chains, a polyester polymer or oligomer that is the polycondensation reaction product of a polyol and a polyacid component, or a polyurethane that is the reaction product of a polyisocyanate component and a polyester polyol component, and(B) a curing agent comprising a plurality of groups that are reactive with the functional groups on compound (A).Type: GrantFiled: August 15, 1996Date of Patent: December 29, 1998Assignee: BASF CorporationInventors: John D. McGee, Brian D. Bammel, Todd A. Seaver, Walter H. Ohrbom, John W. Rehfuss, Gregory G. Menovcik, Paul J. Harris
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Patent number: 5792810Abstract: A curable coating composition is described comprising(A) a compound comprising carbamate or urea and hydroxyl functional groups that is the reaction product of(1) a compound comprising a carbamate or urea group or a group that can be converted to a carbamate or urea group, and an active hydrogen group that is reactive with a lactone or a hydroxy carboxylic acid, and(2) a lactone or a hydroxy carboxylic acid,(B) a compound comprising at least one group that is reactive with carbamate and at least one group that is reactive with hydroxyl, or a plurality of groups that are reactive with both carbamate and hydroxyl.Type: GrantFiled: August 15, 1996Date of Patent: August 11, 1998Assignee: BASF CorporationInventors: Gregory G. Menovcik, John D. McGee, Walter H. Ohrbom, Brian D. Bammel, Todd A. Seaver, John W. Rehfuss
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Patent number: 5760127Abstract: A curable coating composition is described comprising(A) a carbamate- or urea-functional compound that is the reaction product of a mixture comprising(1) a compound comprising a carbamate or urea group or a group that can be converted to carbamate or urea, and a hydroxyl functional group that is the reaction product of(a) a compound comprising a carbamate or urea group or a group that can be converted to a carbamate or urea group, and an active hydrogen group that is reactive with a lactone ring or a hydroxy carboxylic acid, and(b) a lactone or a hydroxy carboxylic acid, and(2) a compound that is reactive with hydroxyl groups on a plurality of molecules of compound (A)(1), but that is not reactive with the carbamate or urea groups on compound (A)(1),(B) a compound comprising a plurality of groups that are reactive with carbamate or urea.Type: GrantFiled: August 15, 1996Date of Patent: June 2, 1998Assignee: BASF CorporationInventors: Brian D. Bammel, John D. McGee, Walter H. Ohrbom, Todd A. Seaver, Gregory G. Menovcik, Paul J. Harris, John W. Rehfuss
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Patent number: 5756213Abstract: A curable coating composition is described comprising(A) a compound comprising a plurality of functional crosslinking groups, at least one of which is a carbamate or urea functional group, which compound also includes at least one carbonate group having the structure: ##STR1## and (B) a curing agent comprising a plurality of groups that are reactive with the functional groups on compound (A).Type: GrantFiled: August 15, 1996Date of Patent: May 26, 1998Assignee: BASF CorporationInventors: Walter H. Ohrbom, John W. Rehfuss, John D. McGee, Gregory G. Menovcik, Paul J. Harris
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Patent number: 5741866Abstract: Disclosed is a method for producing an acetal copolymer, which comprises copolymerizing trioxane with a cyclic ether in the presence of a cation-active catalyst, wherein the cyclic ether is obtained by adding to a fresh cyclic ether containing a peroxide derived therefrom in an amount of 15 ppm by weight or less in terms of hydrogen peroxide at least one sterically hindered phenol in an amount of from 10 to 500 ppm by weight, based on the weight of said fresh cyclic ether. By the method of the present invention, it has become possible not only to stably and efficiently produce an acetal copolymer having high thermal stability, but also to stably conduct a post-treatment of the obtained acetal copolymer for deactivating the remaining catalyst and changing the unstable terminals to stable terminals, so that an ultimate acetal copolymer having high thermal stability can be stably obtained.Type: GrantFiled: May 6, 1996Date of Patent: April 21, 1998Assignee: Asahi Kasei Kogo Kabushiki KaishaInventors: Shyuzi Yahiro, Minoru Yamamoto
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Patent number: 5525685Abstract: Free-flowing powdery compositions comprising: (A) liquid or semi-solid epoxy resins; and (B) solid colloidal condensation polymers of urea or melamine and formaldehyde having a pore volume greater than 1 cm .sup.3 /g and a specific surface area greater than 5 m.sup.2 /g. The novel compositions can be typically used as powder coating compositions, adhesives, casting resins and molding compounds.Type: GrantFiled: May 29, 1991Date of Patent: June 11, 1996Assignee: Ciba-Geigy CorporationInventors: Alfred Renner, Jacques-Alain Cotting
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Patent number: 5510457Abstract: A method for preparing a processable polyisothianaphthene polymer includes steps of dissolving an isothianaphthene monomer in a solvent and introducing therein an initiator to initiate a polymerization reaction to produce a precursor of poly(dihydroisothianaphthene), dissolving thoroughly the precursor of poly(dihydroisothianaphthene) in the solvent in an appropriate ratio to obtain a poly(dihydroisothianaphthene) solution, proceeding a dehydrogenation reaction for the poly(dihydroisothianaphthene) solution by introducing a dehydrogenation agent to obtain a polyisothianaphthene microgel solution, and terminating the dehydrogenation reaction by introducing an inhibitor. This invention offers a simple, feasible, and economical way to prepare a large-area film with uniform film thickness, excellent stability, and good electrochromic, conducting, and mechanical properties.Type: GrantFiled: April 24, 1995Date of Patent: April 23, 1996Assignee: National Science CouncilInventors: Show-An Chen, Chin-Chang Lee
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Patent number: 5281675Abstract: Novel cyclic imino ether compositions containing one or more mesogenic moieties, when polymerized, result in products having improved properties.Type: GrantFiled: February 6, 1992Date of Patent: January 25, 1994Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls
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Patent number: 5221730Abstract: Disclosed are melt-processable wholly aromatic polyesters prepared from terephthalic acid, 2,6-naphthalenedicarboxylic acid, and hydroquinone.Type: GrantFiled: November 16, 1990Date of Patent: June 22, 1993Assignee: Eastman Kodak CompanyInventors: John C. Morris, Winston J. Jackson, Jr., James R. Bradley
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Patent number: 5187019Abstract: Amino resins, e.g., urea-formaldehyde and melamine-formaldehyde thermosetting resins, are cured with a latent catalyst which is a thermally-decomposable adduct of an aromatic sulfonic acid (e.g., p-toluene sulfonic acid) and a bicyclic oxazolidines (e.g., 1-aza-3,7-dioxa-5-ethylbicyclo (3.3.0) octane. The coating compositions can contain other conventional co-reactants, such as polyols, polyacids, alkyd resins, polyester resins, epoxies, acrylics and the like. Coatings containing the amino resin, co-reactant, and latent catalyst have an acceptable viscosity stability, cure rapidly at temperatures lower than some other latent catalysts, and produce films with no wrinkles.Type: GrantFiled: September 6, 1991Date of Patent: February 16, 1993Assignee: King Industries, Inc.Inventors: Leonard J. Calbo, Robert D. Coughlin
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Patent number: 5173542Abstract: Bistriazene compounds such as ##STR1## are useful for crosslinking polymers such as poly(imides), poly(aryl ether ketones), poly(aryl ether sulfones), poly(quinolines), poly(quinoxalines), and nonaromatic fluoropolymers having aliphatic C--H groups. Polymers crosslinked with these bistriazene compounds are useful as interlayer insulators in multilayer integrated circuit articles.Type: GrantFiled: September 17, 1990Date of Patent: December 22, 1992Assignee: Raychem CorporationInventors: Aldrich N. K. Lau, Lanchi P. Vo, Frank W. Mercer
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Patent number: 5045607Abstract: There are provided new moldable blends of a normally crystalline acetal polymer and a normally non-crystalline elastomeric copolymer of about 15 to 45 mol %, preferably about 25 to 35 mol % of trioxane, about 55 to 85 %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer.Type: GrantFiled: April 5, 1989Date of Patent: September 3, 1991Assignee: Hoechst Celanese Corp.Inventors: Kurt F. Wissbrun, Hongkyu Kim, George L. Collins, Diane Terrone
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Patent number: 4942208Abstract: A novel polyacetal resin blend provides for dimensionally stable rib-reinforced tubular bodies upon injection molding of the blend. The blend comprises a major proportion of an oxymethylene copolymer having a melt index of 27.0 grams/10 minutes and a minor proportion of an oxymethylene copolymer having a melt index of 9.0 grams/10 minutes to provide hydrolytic stability to the molded article. Each of the oxymethylene copolymers are formed from recurring oxymethylene units interspersed with alkylene oxide units in which the alkylene group contains at least two adjacent carbon atoms. The blend is particularly useful in forming cigarette lighter bodies.Type: GrantFiled: September 7, 1988Date of Patent: July 17, 1990Assignee: Hoechst Celanese CorporationInventors: Alex S. Forschirm, Jon H. Davies
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Patent number: 4937312Abstract: There are provided new elastomeric copolymers of about 15 to 45 mol %, preferably about 25 to 35 mol % trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer. The elastomeric copolymers may be prepared by mixing said monomers in a substantially dry state and under an inert atmosphere with a cationic polymerization catalyst, e.g., p-nitrobenzenediazonium tetrafluoroborate. The elastomeric copolymers have a strong interaction with moldable, crystalline acetal polymers comprising at least 85 mol % of polymerized oxymethylene units and may be used as a blending agent with such crystalline acetal polymers or as a bonding agent to improve the adhesiveness of the crystalline acetal polymer to other materials.Type: GrantFiled: December 11, 1989Date of Patent: June 26, 1990Assignee: Hoechst Celanese Corp.Inventors: George L. Collins, Kurt F. Wissbrun, Hongkyu Kim
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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: 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: 4788258Abstract: Low Tg copolymers of trioxane and 1,3-dioxolane which have a dioxolane content greater than 65 mol percent and less than about 75 mol percent and an IV of from about 1.0 to about 2.3, and which are non-crystalline at room temperature or above, are disclosed. These polymers, when blended with crystalline oxymethylene polymers, improve the latter's impact properties. They can also be used as adhesives for crystalline oxymethylene polymers.Type: GrantFiled: September 14, 1987Date of Patent: November 29, 1988Assignee: Hoechst Celanese CorporationInventors: George L. Collins, Paul Zema, William M. Pleban
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Patent number: 4761441Abstract: Acid-curable resin compositions are described which comprise a mixture of a furan resin and a minor amount of an acid-curable epoxy resin. The acid-curable resin compositions may contain other components such as catalysts, solid particulate materials, etc. The procedures for curing such acid-curable resin compositions as well as methods for forming shaped, filled bodies such as sand cores and molds also are described. Sand cores and molds produced in accordance with the method of the invention exhibit good compression strength, good chemical resistance and increase resistance to stress cracking.Type: GrantFiled: July 1, 1985Date of Patent: August 2, 1988Assignee: CL Industries, Inc.Inventor: Wayne D. Woodson
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Patent number: 4745160Abstract: A pharmaceutically or veterinarily acceptable amphipathic, non-cross linked linear, branched or graft block copolymer, which has a minimum weight average molecular-weight of 1000, in which the hydrophobic component is biodegradable or hydrolytically unstable under normal physiological conditions, and the hydrophilic component may or may not be biodegradable or hydrolytically unstable under such conditions, and which copolymer is self-dispersible in water; together with mixtures of such a copolymer and a drug, which may be water-soluble of water-insoluble, which mixtures are self-dispersible in water; and processes for the manufacture of such copolymers and such mixtures.Type: GrantFiled: June 21, 1985Date of Patent: May 17, 1988Assignee: Imperial Chemical Industries PLCInventors: Jeffrey R. Churchill, Francis G. Hutchinson
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Patent number: 4614762Abstract: The present invention is directed to a high molecular weight, water soluble polymer product of polyethyleneimine, said product is formed by reacting a linear polyethylenimine with formaldehyde and a polyvinyl alcohol. The resultant product is useful as an improved drainage and retention aid in papermaking processes.Type: GrantFiled: June 15, 1984Date of Patent: September 30, 1986Assignee: W. R. Grace & Co.Inventors: Nelson S. Marans, Stephen M. Pulford
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Patent number: 4598110Abstract: A resin composition comprising(I) a granular or powdery resin which is a condensation product of a phenol, an aldehyde and optionally a nitrogen-containing compound having at least two active hydrogens and is characterized by (A) containing spherical primary particles and their secondary agglomerated particles each having a particle diameter of 0.1 to 150 microns, (B) having such a size that at least 50% by weight thereof can pass through a 100 Tyler mesh sieve, and (C) having a free phenol content, determined by liquid chromatography, of not more than 500 ppm, and(II) at least one member selected from the group consisting of (1) a rubbery elastic material, (2) a thermoplastic resin and (3) a curable resin other than said granular or powdery resin (I) and/or a filler material other than said granular or powdery resin (I).Type: GrantFiled: June 12, 1984Date of Patent: July 1, 1986Assignee: Kanebo Ltd.Inventors: Hiroaki Koyama, Shigeo Shimizu
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Patent number: 4552936Abstract: A protective coating composition containing a polycaprolactone polyol and an aminoplast derivative is applied to a thermoplastic substrate to produce a thermoformable article having abrasion resistance, solvent resistance and weatherability.Type: GrantFiled: August 17, 1984Date of Patent: November 12, 1985Assignee: General Electric CompanyInventor: James E. Moore
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Patent number: 4525505Abstract: This invention relates to flame-proved polyamide moulding compositions containing a combination of from 10 to 18%, by weight melamine and from 1 to 7% by weight of a thermoplastic polyacetal, in each case based on the moulding composition.Type: GrantFiled: December 14, 1983Date of Patent: June 25, 1985Assignee: Bayer AktiengesellschaftInventors: Heinz Bonten, Werner Nielinger, Dietrich Michael, Heinrich Haupt
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Patent number: 4500687Abstract: Excellent and very high quality impact-resistant polymer products products are comprised of particular polyether elastomer constituents which modify and attribute many desirable properties and characteristics to the interpolymerized end product; impact styrene polymers being especially advantageous varieties thereof. In-situ polymerization, with specific coordination catalyst systems, is followed to form polyether polymers of epoxidized monomer constituents provided directly dissolved (or dispersed) in the major addition-polymerizable monomer utilized. The rubbery polyether elastomer so made is then interpolymerized with the major monomer to provide the advantageous high impact end product.Type: GrantFiled: June 18, 1981Date of Patent: February 19, 1985Assignee: The Dow Chemical CompanyInventor: David L. Wolfe
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Patent number: 4476277Abstract: A resin composition comprising(I) a granular or powdery resin which is a condensation product of a phenol, an aldehyde and optionally a nitrogen-containing compound having at least two active hydrogens and is characterized by (A) containing spherical primary particles and their secondary agglomerated particles each having a particle diameter of 0.1 to 150 microns, (B) having such a size that at least 50% by weight thereof can pass through a 100 Tyler mesh sieve, and (C) having a free phenol content, determined by liquid chromatography, of not more than 500 ppm, and(II) at least one member selected from the group consisting of (1) a rubbery elastic material, (2) a thermoplastic resin and (3) a curable reisn other than said granular or powdery resin (I) and/or a filler material other than said granular or powdery resin (I).Type: GrantFiled: December 23, 1982Date of Patent: October 9, 1984Assignee: Kanebo Ltd.Inventors: Hiroaki Koyama, Shigeo Shimizu
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Patent number: 4409370Abstract: A polymer blend comprising a first copolymer and a second copolymer and having improved impact resistance is provided. The first copolymer has recurring units which consist essentially of oxymethylene groups having the formula --OCH.sub.2 --interspersed with ##STR1## groups, where each R.sub.1 and R.sub.2 is selected from the group consisting of hydrogen, lower alkyl radicals, and halogen-substituted lower alkyl radicals, each R.sub.3 is selected from the group consisting of methylene, oxymethylene, lower alkyl and haloalkyl substituted methylene, and lower alkyl and haloalkyl substituted oxymethylene radicals, and n is an integer from zero to three, each lower alkyl radical having one to two carbon atoms. The oxymethylene units comprise approximately 85 to approximately 99.9 mole percent of the recurring units of the first copolymer. The second copolymer has recurring units which consist essentially of oxymethylene groups having the formula--OCH.sub.2 --interspersed with ##STR2## groups where R.sub.1, R.sub.Type: GrantFiled: May 26, 1982Date of Patent: October 11, 1983Assignee: Celanese CorporationInventors: Michael F. Froix, Rajal M. Kusumgar
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Patent number: 4399272Abstract: A process for producing a polyacetal copolymer, which comprises copolymerizing formaldehyde and a compound selected from the group consisting of alkylene oxides, poly(alkylene oxides), cyclic formals and poly (cyclic formals) in the presence of a Lewis acid and an anionic polymerization catalyst with the exception of metal chelate compounds.Type: GrantFiled: November 4, 1980Date of Patent: August 16, 1983Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hisaya Sakurai, Minoru Hamada, Kazuhiko Matsuzaki, Muneaki Aminaka
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Patent number: 4343925Abstract: Coating compositions capable of liquid application to substrates consist essentially of a curable film forming polyol-containing component and an organic reactive diluent. The reactive diluent is an organic compound containing a primary or secondary hydroxyl group and further characterized by having a retained solids value of greater than about 80 percent, a hydroxyl equivalent weight of from about 180 to about 800, and a liquid viscosity of less than about 10 poise at 60.degree. C. The coating compositions can be formulated to contain little or no volatile organic solvent and/or water.Type: GrantFiled: December 7, 1979Date of Patent: August 10, 1982Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, James B. O'Dwyer, John R. Peffer
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Patent number: 4317894Abstract: Coating compositions consist essentially of (a) ethylenically unsaturated monomers, (b) polyol-containing curable resins, (c) resins having ethylenic unsaturation and (d) solvent. The compositions are especially useful for the coating of products made from sheet molding compounds.Type: GrantFiled: December 11, 1979Date of Patent: March 2, 1982Assignee: PPG Industries, Inc.Inventors: Ronald J. Lewarchik, Betty J. Carter
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Patent number: 4230606Abstract: In a molding composition comprising a polyoxymethylene, a melamine formaldehyde polycondensate and an antioxidation agent, the improvement wherein said melamine formaldehyde polycondensate is a finely divided, cross-linked, substantially water insoluble polycondensate comprising the precipitation product obtained by reacting formaldehyde and melamine in a molar ratio between 1.2:1 and 10.0:1, and wherein said polycondensate is in an amount of about 0.001 to about 30 percent by weight, related to the total weight of said composition.Type: GrantFiled: November 27, 1978Date of Patent: October 28, 1980Assignee: Deutsche Gold -und Silber-Scheidearstalt vormals RoesslerInventors: Herbert Amann, Gerhard Morlock