Phosphorus Bonded To Three Chalcogen Atoms And Having Only One P-c Linkage Patents (Class 524/130)
-
Patent number: 7034069Abstract: The present invention relates to highly compatible, high molecular weight hydroxyphenylbenzotriazole UV-absorbers and for their use in protecting plants in green houses and the protection of foodstuffs, beverages, pharmaceuticals, cosmetics, personal care products, shampoos and the like from the deleterious effects of ultraviolet radiation. It has been found that certain highly compatible, high molecular weight hydroxyphenylbenzotriazole UV-absorbers are especially effective towards this end when incorporated in the containers or films in which such materials are stored.Type: GrantFiled: June 24, 2002Date of Patent: April 25, 2006Assignee: Ciba Specialty Chemicals Corp.Inventors: Dario Lazzari, Gianluca Ferri, Massimiliano Sala, Michela Bonora, Manuele Vitali
-
Patent number: 6914085Abstract: Expanded granules or a moulded article made therefrom, based on semicrystalline propylene polymer comprising, per 100 parts by weight, less than 0.035 parts by weight of volatile compounds and processes for its preparation.Type: GrantFiled: June 17, 2002Date of Patent: July 5, 2005Assignee: BP Belgium N.V.Inventors: Emmanuel Michel Delaite, Herve Joseph Gislain Cuypers
-
Patent number: 6887926Abstract: A composition, and a method of using the composition, are described which composition comprising: (A) at least one chlorinated polyvinyl chloride or mixture of at least one polyvinyl-chloride and at least one chlorinated polyvinyl-chloride thereof; (B) at least one volatile organic liquid which is a solvent for the polymer of (A); and (C) a stabilizer comprising (i) an organophosphite compound, at least one hindered phenol, at least one of an organotin compound or mixtures thereof, and (ii) at least one metal-containing carbonate salt. The composition and methods of the present invention act to retard the loss of chlorine from the resins of the adhesive compositions and to absorb or otherwise inactive any lost chlorine. The compositions of the invention are useful in a variety of applications including use as adhesives, cements (including solvent cements) glues or pastes for holding together materials by surface attachment, and as sealants which are load-bearing elastic jointing and insulating materials.Type: GrantFiled: November 15, 2002Date of Patent: May 3, 2005Assignee: Oatey Co.Inventors: Amrit K. Parhar, Charles N. Bush
-
Patent number: 6875803Abstract: The invention concerns transparent, flame retardant, thermoformable, UV-stabilized, single layered or multilayered films, containing a cristallizable thermoplastic material, preferably polyethyleneterephthalate, at least one flame retarding agent and a UV stabilizer as main components. Said films are characterized by good stretchability, thermoformability and good optical and mechanical properties, which makes them and the shaped bodies made from said films suitable for both inner and outer applications.Type: GrantFiled: January 10, 2001Date of Patent: April 5, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Ulrich Kern, Andreas Stopp, Guenther Crass
-
Patent number: 6844387Abstract: A two and three dimensional display medium having a novel transparent polymer composite containing particles of crystals doped with Yb3+ and other rare earth ions. The polymer composite creates homogeneously dispersed compositions without cracking or delamination of the film and can be used for various optical applications.Type: GrantFiled: July 31, 2001Date of Patent: January 18, 2005Assignee: University of Central FloridaInventors: Michael Bass, Kevin Belfield
-
Patent number: 6831120Abstract: The present invention relates to polycarbonate blends containing phosphonate amine and inorganic nanoparticles, which have improved flame proofing and improved mechanical properties such as low-temperature impact strength, elongation at break, weld line strength and stress cracking resistance as well as an improved yellowness index.Type: GrantFiled: February 27, 2002Date of Patent: December 14, 2004Assignee: Bayer AktiengesellschaftInventors: Michael Zobel, Thomas Eckel, Torsten Derr, Dieter Wittmann
-
Patent number: 6828365Abstract: Flame-retardant polyester monofilaments formed by extrusion from a mixture consisting essentially of 5 to 20 weight percent melamine cyanurate and 3 to 10 weight percent organopolyphosphonate with the balance being either poly(ethylene terephthalate) or poly(ethylene naphthalate).Type: GrantFiled: June 25, 2002Date of Patent: December 7, 2004Assignee: T&N Technology LimitedInventor: Lee Hamilton Martin
-
Patent number: 6794432Abstract: The invention concerns transparent, flame-retardant, single layered or multilayered thermoformable films, containing a crystallizable thermoplastic material, preferably polyethyleneterephthalate, and at least one flame retarding agent as main components. Said films are characterized by good stretchability, thermoformability and good mechanical and optical properties, which makes them and the shaped bodies made from said films suitable for both inner and outer applications.Type: GrantFiled: July 18, 2002Date of Patent: September 21, 2004Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Ulrich Kern, Andreas Stopp, Guenther Crass
-
Patent number: 6777468Abstract: There is disclosed a composition for a soft (non-metal) sealing material having the following percentage composition based on the overall composition: from 4 to 9 wt. % of fibrillated polyaramide fibers; less than 60 wt. % of powder graphite having a carbon content of 90 to 92 wt. % and such particle size distribution that at least 85% of all particles are in the size range of 10 &mgr;m to 50 &mgr;m; about 30 wt. % of mineral fillers represented by a combination of microsilica having a SiO2 content between 90 and 95 wt. %, a specific surface area according to BET method of 15 to 25 m2/g and such particle size distribution that at least 90 wt. % of all particles are in the particle size range under 5 &mgr;m, and of an active mineral filler having a SiO2 content of at least 98 wt. %, a specific surface area according to BET method of 100 to 120 m2/g and such particle size distribution that at least 90 wt.Type: GrantFiled: May 23, 2003Date of Patent: August 17, 2004Assignee: Donit Tesnit druzba za proizvodnjo tesnilnih materialov, d.d., MedvodeInventors: Franci Barbori{haeck over (c)}, Boris Vidjak, Franc {haeck over (C)}ernec
-
Patent number: 6767941Abstract: A halogen-free, flame-retardant composition includes (1) organic phosphorus compound (A) and (1′) melamine or a compound derived from melamine (B); or (2) a melamine-phosphorus compound (AB). The composition also includes and olefin polymer and from 0.1-30 wt % based on the olefin polymer, of a compound containing acid, acid anhydride or epoxy groups. The flame-retardant composition may included in a polycondensate composition which incorporate the flame-retardant composition is substantially shortened.Type: GrantFiled: November 27, 2001Date of Patent: July 27, 2004Assignee: DSM IP Assets B.V.Inventors: Pieter A. Van Der Spek, Martinus L. M. Bos, William A. C. Roovers, Marnix Van Gurp, Henrica N. A. M. Menting
-
Patent number: 6737457Abstract: The use of zwitterionic compounds as mold release agents in thermoplastics is disclosed. Molding compositions having good release properties, preferably compositions containing polycarbonate resins are thus disclosed.Type: GrantFiled: March 13, 2002Date of Patent: May 18, 2004Assignee: Bayer AktiengesellschaftInventors: Martin Döbler, Walter Köhler, Siegfried Neumann, Wolfgang Ebert
-
Patent number: 6667355Abstract: Flame retardants for polymer compositions which are mixtures including triaryl phosphate esters represented by the following formula: where R1-R15 can independently be located in the ortho, meta or para positions on their respective phenol rings and are, independently, H or branched or linear alkyl groups having 3 to 11 carbon atoms and the mole ratio of the alkylate to phenol in the mixtures is at least about 0.77, preferably greater than about 0.81, and most preferably greater than about 0.85. The higher alkylated mixtures of triaryl phosphate esters can be incorporated into polymer compositions alone or in combination with other flame retardants.Type: GrantFiled: August 30, 2001Date of Patent: December 23, 2003Assignee: PABU Services, Inc.Inventors: Richard S. Rose, David L. Buszard, Matthew D. Phillips, Frank J. Liu
-
Patent number: 6613824Abstract: Disclosed are flame retardant resinous compositions comprising (i) at least one aromatic polycarbonate; (ii) at least one of a second polymer having structural units derived from one or more monomers selected from the group consisting of vinyl aromatic monomers, monoethylenically unsaturated nitrile monomers, and C1-C12 alkyl (meth)acrylate monomers; (iii) at least one rubber modified graft copolymer; (iv) at least one polymeric or non-polymeric organic phosphorus species; (v) at least one antidrip agent; and (vi) at least one perfluoroalkanesulfonate salt present in an amount in a range between about 0.01 wt % and about 0.25 wt %, based on the weight of the entire composition. Also disclosed are methods for making said compositions.Type: GrantFiled: November 12, 2001Date of Patent: September 2, 2003Assignee: General Electric CompanyInventors: John Robert Campbell, Thomas Miebach, Monica Marugan, Thomas Arnold Ebeling
-
Patent number: 6607686Abstract: A prepolymer blend for a thermosetting polyurethane material that allows for control of the reaction time is disclosed herein. The prepolymer blend is preferably composed of a polyurethane prepolymer and dimethyl methylphosphonate. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.Type: GrantFiled: November 6, 2001Date of Patent: August 19, 2003Assignee: Callaway Golf CompanyInventor: Pijush K. Dewanjee
-
Patent number: 6515052Abstract: A compacted particulate polymer additive composition in a dry granular form formed from the following components: (a) at least one particulate organic phosphite, organic phosphonite, and/or organic phosphonate, and (b) one or more particulate polymer additives other than an organic phosphite, organic phosphonite, or organic phosphonate; wherein the particles of said composition are held together in compacted dry granular form exclusively or substantially exclusively by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (a), and optionally by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (b). Compositions of this type except that there is no component (b) are also described.Type: GrantFiled: February 23, 2001Date of Patent: February 4, 2003Assignee: Albemarle CorporationInventor: John Semen
-
Patent number: 6486245Abstract: The invention relates to a coating composition, to a formulation comprising said coating composition, to methods of coating surfaces with the coating composition, and to articles coated with the coating composition. The coating composition is based on a complex of polyelectrolytes and oppositely charged surfactants. The surfactants contain fluorine bonded covalently to carbon atoms. The coating material imparts oleophobic and/or hydrophobic properties to various surfaces. The degree of hydrophobicity and other properties such as, for instance, gas or moisture permeation can be adjusted over a wide range. Through the use of additives, the coating can be executed as a permanent or temporary coating. The readily variable profile of properties, the uncomplicated application, and the low coat thickness result in a wide scope for application as, for example, an antisoiling, antigraffiti or antiadhesion coating.Type: GrantFiled: June 19, 2000Date of Patent: November 26, 2002Assignee: Nanogate Technologies GmbHInventors: Andreas Thünemann, Helmut Lochhaas
-
Publication number: 20020061944Abstract: PHA pellet compositions are provided which are processible into blown and cast free-standing films. The Mw of the PHA in the pellets used to produce the films is at least 470,000, at least 435,000 if PHA thermal stabilizers of the invention are used. In order to achieve a stable, unsupported film having desirable elongational and tensile properties, the Mw of PHA in the film is greater than about 420,000.Type: ApplicationFiled: April 30, 2001Publication date: May 23, 2002Applicant: Monsanto CompanyInventors: Jawed Asrar, Jean R. Pierre
-
Publication number: 20020045689Abstract: Disclosed are photochromic resins having improved photochromic properties; articles, notably ophthalmic articles, which are constituted, wholly or in part only, of such resins; radically polymerizable compositions which are precursors of said resins; and methods of preparing said resins. Said resins are obtained by radical copolymerization of particular comonomers. They contain an effective amount of at least one acidic additive or of at least one basic additive, and they have improved kinetics of return to the light state.Type: ApplicationFiled: July 17, 2001Publication date: April 18, 2002Inventors: David Henry, Cecile Lecrivain
-
Patent number: 6207737Abstract: An aqueous sizing composition for glass fibers used to reinforce polyolefin polymers contains coupling agent, chemically modified polyolefin film forming material, and stabilizer.Type: GrantFiled: February 15, 1995Date of Patent: March 27, 2001Assignee: PPG Industries Ohio, Inc.Inventors: Philip L. Schell, Laura A. Meesters, Rajgopal Subramanian
-
Patent number: 6180713Abstract: A one-pack type moisture curable urethane composition comprising a urethane prepolymer and an amine catalyst, wherein 0.002 to 50 parts by weight, based upon 100 parts by weight of the urethane prepolymer, of phosphonic ester compounds, phosphonous ester compounds, phosphinous ester compounds or phosphine compounds or any mixture thereof is compounded to give the urethane composition having an improved storage stability, without decreasing the catalyst activity even when an amine catalyst having a high catalytic activity dimethylamino group structure etc. is used.Type: GrantFiled: October 18, 1999Date of Patent: January 30, 2001Assignee: The Yokohama Rubber Co., Ltd.Inventors: Kiminori Araki, Kazunori Ishikawa
-
Patent number: 6136923Abstract: The present invention relates to blend compositions comprising;(A) of from about 1 to about 99 weight percent based on the combined weights of Components A, B and C of at least one substantially random interpolymer; and wherein said interpolymer;(1) contains of from about 0.5 to about 65 mole percent of polymer units derived from;(a) at least one vinylidene aromatic monomer, or(b) at least one hindered aliphatic vinylidene monomer, or(c) a combination of at least one vinylidene aromatic monomer and at least one hindered aliphatic vinylidene monomer;(2) contains of from about 35 to about 99.5 mole percent of polymer units derived from at least one aliphatic .alpha.-olefin having from 2 to 20 carbon atoms;(3) has a molecular weight (Mn) greater than about 1,000;(4) has a melt index (I.sub.2) of from about 0.01 to about 1,000;(5) has a molecular weight distribution (M.sub.w /M.sub.n) of from about 1.Type: GrantFiled: October 15, 1997Date of Patent: October 24, 2000Assignee: The Dow Chemical CompanyInventors: Yunwa W. Cheung, Martin J. Guest
-
Patent number: 6136902Abstract: To provide a polyacetal resin composition having an excellent corrosion inhibiting effect on metals, particularly reduced in the adverse effect on magnetic tapes or the like, and suitable for use in producing component parts of a magnetic tape cassette such as a reel hub or tape guide, 100 parts by weight of a polyacetal resin (A) is blended with 0.05 to 5 parts by weight of an antioxidant (B), 0.001 to 5 parts by weight of a specified nitrogen-containing compound (C), and 0.001 to 3 parts by weight of a boric acid compound.Type: GrantFiled: June 18, 1997Date of Patent: October 24, 2000Assignee: Polyplastics Co., Ltd.Inventors: Yoshihito Fukasawa, Sachio Anada
-
Patent number: 6077891Abstract: Damaged thermoplastics can be outstandingly stabilized by the use of a mixture comprising a) 0.05 to 20% by weight, based on the plastic to be stabilized, of at least one polyfunctional epoxide, b) 0.01 to 2% by weight, based on the plastic to be stabilized, of at least one sterically hindered phenol.Type: GrantFiled: August 27, 1997Date of Patent: June 20, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Heinz Herbst, Kurt Hoffmann, Rudolf Pfaendner
-
Patent number: 6025463Abstract: By heating at above the melting point or glass transition point of the polyamide and adding a secondary aromatic amine and a difunctional epoxide it is possible to bring about an increase in the molecular weight and/or viscosity of virgin polyamide and recycled polyamide.Type: GrantFiled: April 22, 1999Date of Patent: February 15, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann
-
Patent number: 6022914Abstract: The present invention relates to a pressure-sensitive adhesive composition containing a non-halogen, non-intumescent flame-retardant system comprising at least one flame-retardant agent with the provisos that the flame-retardant system does not comprise Sb.sub.2 O.sub.3 or does not consist only of alumina trihydrate.Type: GrantFiled: November 27, 1995Date of Patent: February 8, 2000Assignee: 3M Innovative Properties CompanyInventors: Petra Nowak, Robert D. Waid, William D. Coggio
-
Patent number: 6013217Abstract: The present invention relates to a method for processing a thermoplastic resin composition by extruding the composition through a nickel die to provide an extrudate having a low degree of surface roughness, said composition comprising(A) 100 parts by weight of a thermoplastic resin;(B) 0.01 to 1 part by weight of a hydroxy-functional diorganopolysiloxane having a number average molecular weight of at least 10,000; and(C) 0.001 to 1 part by weight of an organophosphorous compound.Type: GrantFiled: December 22, 1997Date of Patent: January 11, 2000Assignee: Dow Corning CorporationInventors: Dale Earl Hauenstein, Arnold Wade Lomas, Kevin Edward Lupton, David Joseph Romenesko
-
Patent number: 5948840Abstract: Claimed is a polymer composition comprising a syndiotactic vinyl aromatic polymer and from 0.1 to 5.0 weight percent of an alkaline earth metal bis(monoethyl(3,5-di-t-butyl-4-hydroxybenzyl)phosphonate) crystallization modifier.Type: GrantFiled: March 2, 1998Date of Patent: September 7, 1999Assignee: The Dow Chemical CompanyInventors: Norbert L. Maecker, Joseph J. Fay
-
Patent number: 5936048Abstract: There are herein disclosed a method for preparing a modified resin which comprises thermal/reaction by the use of a norbornenyl group-containing compound typified by norbornenecarboguanamine or its derivative, a method for preparing an epoxy-modified resin which comprises the step of reacting the above-mentioned modified resin and an epoxide, a flame-retarding method, a thermal stabilization method, a compatibilizing method and a surface modification method which comprise utilizing the modified resin, as well as a coating resin composition and an adhesive resin composition containing the modified resin.According to the preparation methods of the present invention, the deterioration of a material scarcely occurs, and a functional group which is excellent in flame retardancy, thermal stability, compatibility and the like can be introduced to the resins.Type: GrantFiled: June 24, 1998Date of Patent: August 10, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Tetsuya Oishi, Kazuo Sugazaki, Jin Suzuki
-
Patent number: 5922794Abstract: Thermoplastic resin composition are provided that comprise a thermoplastic resin or mixture thereof, a stabilizing amount of a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the 3-arylbenzofuranones, the hindered amine stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids, the hydroxylamines, and the thiosynergists, and a stabilizing amount of a tertiary amine oxide. The compositions have improved stability against discoloration upon exposure to heating or to the combustion products of natural gas by the concomitant presence of an effective amount of a tertiary amine oxide.Type: GrantFiled: March 26, 1997Date of Patent: July 13, 1999Assignee: General Electric CompanyInventors: Vaikunth S. Prabhu, Roger W. Avakian
-
Patent number: 5889099Abstract: A thermoplastic resin composition improved in terms of prevention of mold contamination, comprising the following components (A) to (G):component (A): 55 to 75% by weight of a propylene-ethylene block copolymer including a propylene homopolymer moiety having a melt flow rate of 15 to 50 g/10 min. and an isotactic pentad fraction of at least 0.97, said block copolymer having a melt flow rate of 10 to 30 g/10 min. and an ethylene content of 2 to 6% by weight,component (B): 0 to 10% by weight of an ethylene-propylene copolymer rubber having a melting temperature of 30.degree. to 60.degree. C. and a melt flow rate of 0.2 to 2 g/10 min.,component (C): 5 to 15% by weight of an ethylene-.alpha.-olefin copolymer rubber having a melting temperature of 60.degree. to 100.degree. C. and a melt flow rate of 0.3 to 2 g/10 min.,component (D): 15 to 25% by weight of a talc having an average particle diameter of up to 5 .mu.m and a specific surface area of at least 3.5 m.sup.Type: GrantFiled: February 21, 1997Date of Patent: March 30, 1999Assignees: Japan Polychem Corporation, Toyota Jidosha Kabushiki KaishaInventors: Takayuki Nagai, Toshio Niimi, Yukihito Zanka, Ikuo Tsutsumi, Hiroki Sato
-
Patent number: 5858996Abstract: Compositions and methods for reducing the decomposition rate of polymeric bioadhesives and viscosity enhancers, such as poly(acrylic acids). The compositions include at least one strong, stable chelating agent, preferably an organophosphorous compound such as diethylene triamine penta(methylene phosphonic acid). These biocompatible compositions are especially useful in the ophthalmic field.Type: GrantFiled: May 27, 1997Date of Patent: January 12, 1999Assignee: CIBA Vision CorporationInventor: Fu-Pao Tsao
-
Patent number: 5852086Abstract: An antigel agent composed of four types of antioxidants that allows polyamides to be blended with acrylonitrile/butadiene polymers with minimum generation of gels and yields a blend which can be extruded or sheeted to give a uniformed shaped product, for example, sheets and molded articles and is essentially free of plugging the screens of extruder used to extrude hose tube or sheet.Type: GrantFiled: September 30, 1996Date of Patent: December 22, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: James Walter Horvath, Faith Michelle Howard
-
Patent number: 5837049Abstract: A treated inorganic solid comprises particulate inorganic material the particles of which are coated with an alkylphosphonic acid or ester thereof, the alkylphosphonic acid containing 6 to 22 carbon atoms. The particulate material is usually a pigment, extender or filler which is treated by mixing with the alkylphosphonic acid or ester for example in an aqueous dispersion or during a process step such as milling. The treated inorganic solid is particularly useful for preparing polymer compositions such as masterbatches.Type: GrantFiled: October 23, 1997Date of Patent: November 17, 1998Assignee: Tioxide Group Services LimitedInventors: Colin Lloyd Watson, Peter James Allen
-
Patent number: 5807913Abstract: An active halogen-containing acrylic rubber composition for molding oil filter-gaskets, which comprises an active halogen-containing acrylic rubber and a metal phosphonate represented by the following general formula:RR'nPO(OH)(OM)wherein R is an alkyl group having 1 to 32 carbon atoms, a polyfluorocarbon group or a perfluoropolyether group; R' is an alkylene group having 1 to 6 carbon atoms, a phenylene group, an oxyphenylene group or a sulfonamide group; M is an alkali metal; and n is 0 or 1, gives oil filter-gaskets having a distinguished durable protection against fixation without lowering of high temperature sealability, even if used in engine oil.Type: GrantFiled: December 5, 1996Date of Patent: September 15, 1998Assignees: NOK Corporation, Denso CorporationInventors: Kenji Mikuni, Hisayuki Nagaoka, Norio Tanaka
-
Patent number: 5804674Abstract: A mold release agent containing (A) a silane compound, (B) a silicon and/or fluorine-containing compound having at least two hydroxyl groups or alkoxy groups in one molecule and (C) a polymer of a perfluoroalkyl group-containing (meth)acrylate ester gives a long mold release life and a good surface finishing property of a molded article, and does not exert a harmful influence on fabricability such as painting and adhesion of the molded article.Type: GrantFiled: April 21, 1997Date of Patent: September 8, 1998Assignee: Daikin Industries, Ltd.Inventors: Masayuki Yamana, Yasushi Nakamae, Hirotoshi Sakashita, Masato Kashiwagi
-
Patent number: 5728756Abstract: An oral composition dentifrice comprising an orally acceptable vehicle, about 5-30% by weight of a siliceous polishing agent, a substantially water-insoluble noncationic antibacterial antiplaque agent, such as 2,4,4'-trichloro-2'-hydroxydiphenyl ether (triclosan), and an antibacterial-enhancing agent which enhances the delivery of said antibacterial agent to, and retention thereof on, oral surfaces, wherein said antiplaque agent is substantially completely dissolved in saliva present during tooth and gum cleaning in a solubilizing agent therefor. The solubilizing agent may be a humectant polyol such as propylene glycol, dipropylene glycol and hexylene glycol; a cellosolve such as methy cellosolve and ethyl cellosolve: a vegetable oil or wax containing at least about 12 carbon atoms in a straight chain such as olive oil, castor oil and petrolatum; or an ester such as ethyl acetate, amyl acetate, glyceryl tristearate and benzyl benzoate.Type: GrantFiled: June 24, 1996Date of Patent: March 17, 1998Assignee: Colgate Palmolive CompanyInventors: Abdul Gaffar, Nuran Nabi, John Afflitto, Orum Stringer
-
Patent number: 5683993Abstract: Compositions and methods for reducing the decomposition rate of polymeric bioadhesives and viscosity enhancers, such as poly(acrylic acids). The compositions include at least one strong, stable chelating agent, preferably an organophosphorous compound such as diethylene triamine penta(methylene phosphonic acid). These biocompatible compositions are especially useful in the ophthalmic field.Type: GrantFiled: June 22, 1995Date of Patent: November 4, 1997Assignee: CIBA Vision CorporationInventor: Fu-Pao Tsao
-
Patent number: 5594088Abstract: One aspect of the present invention relates to a process for preparing plastic lenses having a high-refractive index comprising forming a mixture containing one or more polyisocyanate compounds; one or more active hydrogen compounds selected from the group consisting of a polyol compound having no sulfur atom, a polyol compound having at least one sulfur atom, and a polythiol compound having at least one sulfur atom in addition to the sulfur atom contained in mercapto group and at least one internal releasing agent and then casting and polymerizing the mixture.Type: GrantFiled: June 7, 1995Date of Patent: January 14, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Teruyuki Nagata, Koju Okazaki, Tohru Miura, Nobuyuki Kajimoto, Yoshinobu Kanemura, Katsuyoshi Sasagawa, Masao Imai
-
Patent number: 5556901Abstract: The subject-matter of the present invention is to solve the technical problem resulting from the instability in air of polysilanes. For this purpose, it proposes a polysilane-based composition, used particularly for producing silicon carbide, comprising:polysilane chains capable of being degraded by oxidation and the formation of polysiloxane-type products and/or polysilane chains suitable for being bound together directly by a reaction between Si--H and Si--X radicals, and/or indirectly through the intermediary of a crosslinking additive and by a reaction between A--X and A--H radicals, X being an olefin radical, preferably comprising 1 to 18 carbon atoms and, more preferably still, being constituted by a vinyl radical (Vi:--CH.dbd.CH.sub.2), A being an organic, organosilicic or silicic radical;and at least one antioxidant system.Type: GrantFiled: November 2, 1993Date of Patent: September 17, 1996Assignee: Flamel TechnologiesInventor: Nathan J. Bryson
-
Patent number: 5496920Abstract: An increase in the molecular weight of newly produced polyamides and recycled polyamide materials can be achieved by heating to above the melting point or glass transition point and adding of a bismaleimide and a sterically hindered hydroxyphenyl-alkyl-phosphonic acid ester or half-ester.Type: GrantFiled: May 27, 1994Date of Patent: March 5, 1996Assignee: Ciba-Geigy CorporationInventors: Rudolf Pfaendner, Kurt Hoffmann, Heinz Herbst
-
Patent number: 5464893Abstract: A thermoplastic molding composition stabilized against .gamma.-rays and its application for manufacture of medical equipment is disclosed. The composition contains an aromatic polycarbonate and(i) dialkyl and/or dicycloalkyl monosulfides or polysulfides in an amount of 0.001 to 5 weight %, and optionally(ii) aliphatic or cycloaliphatic monoalcohols or polyalcohols or their derivatives in an amount of 0.001 to 2 weight %said percent being relative to 100 weight % of aromatic polycarbonate.Type: GrantFiled: March 22, 1994Date of Patent: November 7, 1995Assignees: Bayer Aktiengesellschaft, Bayer CorporationInventors: Rick L. Archey, Charles E. Lundy, Aaron D. Meltzer, Harald Pielartzik, Gerhard Fennhoff, Ralf Hufen, Klaus Kircher, Rudiger Schubart, Richard Weider
-
Patent number: 5453459Abstract: The invention is a composition for providing a temporary coating to protect the surface of an article and a solvent free composition for rapidly removing the coating from the article. The invention also includes a method for protecting a surface of an article and a system for carrying out the process.Type: GrantFiled: July 5, 1994Date of Patent: September 26, 1995Assignee: Henkel CorporationInventor: Wilbert J. Roberts
-
Patent number: 5399599Abstract: Thermoplastic elastomeric ablative insulation having good mechanical properties at extremely low temperatures are disclosed. The insulation is based upon a polyamide-ether resin and includes carefully selected fillers to possess good low temperature mechanical properties and still provide suitable charring and ablative insulation performance at low temperatures (-65.degree. F.). A typical insulation within the scope of the present invention includes a polyamide-ether thermoplastic elastomeric polymer resin, an inorganic phosphorus containing compound, such as ammonium polyphosphate, present in the insulation from about 5 to about 60 phr, and a polyhydric alcohol present, such as pentaerythritol, in the insulation from about 1 to about 30 phr. The insulation compositions within the scope of the present invention optionally include silicone resin present in the insulation in range from about 0 to 15 phr. Chopped fiber filler may also be present in the insulation in range from about 0 to 100 phr.Type: GrantFiled: April 6, 1993Date of Patent: March 21, 1995Assignee: Thiokol CorporationInventor: David G. Guillot
-
Patent number: 5391690Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.Type: GrantFiled: June 2, 1993Date of Patent: February 21, 1995Assignee: Daicel Chemical Industries,Ltd.Inventors: Tatsuya Kanno, Tsutomu Yamato, Yasuhiro Oshino, Yutaka Fukuda, Yoshihiro Iguchi, Takaaki Kuwana, Toshihiro Matsumoto
-
Patent number: 5387628Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.Type: GrantFiled: September 9, 1993Date of Patent: February 7, 1995Assignee: Daicel Chemical Industries, Ltd.Inventors: Tatsuya Kanno, Tsutomu Yamato, Yasuhiro Oshino, Yutaka Fukuda, Yoshihiro Iguchi, Takaaki Kuwana, Toshihiro Matsumoto
-
Patent number: 5376714Abstract: The present invention relates to a readily molded engineering plastic composition comprising:polyphenylene ether polymer; optionallya second polymer chosen from polyesters, polyamides and polycarbonates; anda flow enhancement agent which is an aluminum salt of a phosphonic acid.Type: GrantFiled: December 31, 1991Date of Patent: December 27, 1994Inventor: John B. Yates
-
Patent number: 5373051Abstract: A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst and a liquid carbonizable component, and a boron containing or phosphorus containing material, which when treated with the catalyst will possess increased oxidation resistance at elevated temperatures.Type: GrantFiled: October 12, 1993Date of Patent: December 13, 1994Assignee: Ucar Carbon Technology CorporationInventors: Irwin C. Lewis, Terrence A. Pirro, Ronald A. Greinke, Richard I. Bretz, Dennis J. Kampe
-
Patent number: 5326800Abstract: The invention relates to use of salts of sulphonic acids, phosphonic acids and/or carboxylic acids in combination with halogenated phthalimides for additional processing of glass fibre-containing polycarbonate moulded members.Type: GrantFiled: March 11, 1993Date of Patent: July 5, 1994Assignee: Bayer AktiengesellschaftInventors: Klaus Horn, Jurgen Kirsch, Richard Weider, Hugo Obermann, Dieter Freitag, Karsten-Josef Idel
-
Patent number: 5322870Abstract: An additive package can be used in a single-coat, in situ self-phosphatizing paint to provide a phosphate layer that inhibits corrosion of a surface on which the paint is applied. The additive package includes an amine and a phosphatizing reagent that can be an alkyl-, phenyl- or aryl- ester phosphoric acid or an alkyl-, phenyl- or aryl-phosphonic acid. The reagent and the amine are present in a ratio effective to produce reagent-amine complexes. A paint can include the additive package in addition to a polymer coat forming resin and a cross-linking agent.Type: GrantFiled: December 29, 1992Date of Patent: June 21, 1994Assignee: Board of Regents, Northern Illinois UniversityInventor: Chhiu-Tsu Lin
-
Patent number: 5278279Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.Type: GrantFiled: August 31, 1992Date of Patent: January 11, 1994Assignee: Daicel Chemical Industries, Ltd.Inventors: Tatsuya Kanno, Tsutomu Yamato, Yasuhiro Oshino, Yutaka Fukuda, Yoshihiro Iguchi, Takaaki Kuwana, Toshihiro Matsumoto