Six-membered Nitrogen Ring, E.g., Pyridine, Etc. Patents (Class 524/99)
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Patent number: 5804621Abstract: A polymeric composition in which (D) a phenol antioxidant having a specific skeleton 5-t-butyl-3-methyl-4-hydroxyphenyl, (C) a hindered amine photostabilizer having a molecular weight of not less than 400, and (D) a specific phosphorus compound dihydrooxaphosphaphenanthrene are included in (A) a polymeric compound. This polymeric composition is excellent in thermal oxidation degradation resistance and discoloration of coloring resistance in contacting with a combustion gas or the like.Type: GrantFiled: November 22, 1996Date of Patent: September 8, 1998Assignee: Sumitomo Chemical Company, LimitedInventors: Kenji Kimura, Motohiko Samizo
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Patent number: 5804620Abstract: An embrittlement-resistant polymer composition, including: (a) a visbroken polymer composition comprising a crystalline, random copolymer of propylene and either ethylene or C.sub.4 -C.sub.10 1-olefins, and (b) an amount of polymethyl propyl 3-oxy-?4-(2,2,6,6-tetramethyl)piperidinyl! siloxane which is effective to improve the radiation resistance of the composition. Optional components include an acid neutralizing agent, and a sorbitol-based clarifier compound. The composition may be used to manufacture medical articles and food packaging material which must be sterilized, either by irradiation or by autoclaving.Type: GrantFiled: June 18, 1996Date of Patent: September 8, 1998Assignee: Montell North America Inc.Inventor: Stephen E. Amos
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Patent number: 5773497Abstract: Disclosed is a crosslinking resin composition comprising: (A) a carboxyl group-containing resin as a main agent, having a number average molecular weight of from 1,000 to 40,000 and an acid value of from 10 to 400 mg KOH/g; (B) a cyclic or chain silicone compound as a curing agent, having a number average molecular weight of from 350 to 8,000 and containing at least two epoxy groups in one molecule thereof, wherein the silicone compound is free of a silanol group, a hydrolyzable silyl group and a vinyl polymer structure, and wherein the silicone compound has a siloxy group-containing skeleton; and (C) a medium. The crosslinking resin composition of the present invention not only exhibits excellent storage stability, but is also capable of providing, upon being crosslinked, a cured resin having excellent gloss, weatherability, acid resistance, solvent resistance, water repellency and stain resistance.Type: GrantFiled: September 16, 1996Date of Patent: June 30, 1998Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Kaoru Ueyanagi, Masahiro Yamamoto
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Patent number: 5753728Abstract: Polymeric compositions well suited for conversion into electroconductive shaped articles, e.g., films, comprise at least one convertible polymer (Pm) and at least one amphiphilic organic compound (B) which comprises a charge transfer complex or a radical ion salt having the formula (I): D.sub.d A.sub.a Z.sub.z, in which D is an electron donor; A is an electron acceptor; Z is a doping agent which itself can be a non-amphiphilic electron donor or electron acceptor, with the proviso that at least one of D and A is amphiphilic and contains at least one saturated or unsaturated hydrocarbon substituent having at least 10 carbon atoms; d is a number equal to or greater than 0; a is a number equal to or greater than 0; and z is a number equal to or greater than 0, with the further proviso that at least one of the symbols d and a is a number greater than 0.Type: GrantFiled: June 5, 1995Date of Patent: May 19, 1998Assignee: Rhone-Poulenc ChimieInventors: Bernard Chauvel, Joel Richard
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Patent number: 5744527Abstract: There is provided a polyacetal resin composition having excellent in weather and environmental resistances, in which resin degradation/discoloration and bleeding of additives/discoloration are suppressed to the utmost in extended exposure to light and an initial surface condition of a molded product is maintained.Hundred parts by weight of the polyacetal resin (A) are blended with 0.01 to 2.0 parts by weight of the UV absorber (C), 0.01 to 1 part by weight of the low-molecular hindered amine series substance (D-1) having a molecular weight of less than 700 and 0.01 to 4 parts by weight of the high molecular hindered amine series substance (D-2) having a molecular weight of 700 or more. The oxyalkylene polymer (E) may be contained therein.Type: GrantFiled: September 22, 1994Date of Patent: April 28, 1998Assignee: Polyplastics Co., Ltd.Inventors: Toru Katsumata, Nobuyuki Matsunaga
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Patent number: 5741912Abstract: Novel compounds containing a heteroatom-bearing bridge and novel complexes of these compounds with metals. The novel compounds and complexes are useful in diagnostic and therapeutic methods.Type: GrantFiled: June 6, 1995Date of Patent: April 21, 1998Assignee: Bracco International B.V.Inventors: Kondareddiar Ramalingam, Natarajan Raju
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Patent number: 5736597Abstract: o-Hydroxyphenyl-s-triazines of the formula I ##STR1## in which n is 1 to 4 and R.sub.1 to R.sub.7 are as defined in claim 1, can be used, in combination with sterically hindered amines of the polyalkylpiperidine type, for stabilizing organic polymers. Some of these compounds are novel and can also be used without polyalkylpiperidine.Type: GrantFiled: October 26, 1993Date of Patent: April 7, 1998Assignee: Ciba-Geigy CorporationInventors: Jean-Luc Birbaum, Jean Rody, Mario Slongo, Andreas Valet, Roland A. E. Winter
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Patent number: 5726226Abstract: Compounds of formula (I) ##STR1## in which m+n is a number from 1 to 100 and n varies from zero to 90% of the sum of m+n; R.sub.1 and R.sub.3, which may be identical or different, are for example C.sub.1 -C.sub.18 alkyl or phenyl; R.sub.2 is C.sub.2 -C.sub.12 alkylene; G is for example a group of formula (IId) ##STR2## in which R.sub.5 and R.sub.6 are for example hydrogen; R.sub.4 is for example C.sub.1 -C.sub.18 alkyl; L.sub.1 has for example any one of the meanings given to R.sub.1 or is a group (R.sub.28).sub.3 SiO-- where R.sub.28 is C.sub.1 -C.sub.18 alkyl; and L.sub.2 is for example hydrogen, Na, K, C.sub.1 -C.sub.8 alkyl or a group (R.sub.28).sub.3 Si-- with R.sub.28 as defined above.The compounds of formula (I) are useful as light, heat and oxidation stabilizers for organic materials.Type: GrantFiled: May 22, 1997Date of Patent: March 10, 1998Assignee: Ciba Specialty Chemcials CorporationInventors: Valerio Borzatta, Primo Carrozza
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Patent number: 5723543Abstract: A thermoplastic elastomer composition is provided. The composition comprises a hydrogenated elastomeric block copolymer having at least two resinous endblocks of polymerized monovinyl aromatic compound and an elastomeric midblock of polymerized conjugated diene, a midblock plasticizer, and an ethylene-acrylate copolymer or terpolymer. The thermoplastic elastomer exhibits improved overmolding adhesion to polar matrices over compositions not containing the ethylene-acrylate polymer.Type: GrantFiled: September 26, 1996Date of Patent: March 3, 1998Assignee: Shell Oil CompanyInventor: Michael John Modic
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Patent number: 5721297Abstract: Novel piperidyl organosiloxanes, well adapted for the light/UV-stabilization of a wide variety of polymer substrates, e.g.Type: GrantFiled: July 1, 1992Date of Patent: February 24, 1998Assignee: Rhone-Poulenc ChimieInventors: Michel Gay, Sylvie Lavault
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Patent number: 5721059Abstract: A temperature-dependent color/transparency storing resin layer is composed by dispersing and fixing a mutually dissolved homogeneous composition consisting of (A) an electron-donating color-developing organic compound, (B) a compound having a phenolic hydroxyl radical, and (C) a compound selected from alcohols, esters, ketones and carboxylic acids, in vinyl chloride-vinyl acetate-copolymer matrix resin, as small particles, and capable of exhibiting reversible change in color and in transparency in response to a temperature variation with hysteresis, and selectively storing a state developed above the high trigger temperature and a state developed below the low trigger temperature in a temperature range between the high and low trigger temperatures, wherein the transparency is improved by blending vinyl chloride-vinyl acetate-vinyl alcohol copolymer and/or vinyl chloride-vinylidene chloride copolymer as an agent for improving the transparency in said matrix resin so as to regulate the transparency and to conspType: GrantFiled: August 29, 1996Date of Patent: February 24, 1998Assignee: The Pilot Ink Co., Ltd.Inventors: Tsutomu Kito, Kuniyuki Senga, Hiroyuki Hayashi
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Patent number: 5716667Abstract: A releasable aqueous coating composition used for temporarily protecting a finished coating film coated on an automobile body. It contains (A) an aqueous acrylic resin obtained by copolymerizing a monomer mixture of a (meth)acrylic ester monomer as an essential component and other polymerizable unsaturated monomer, except for (meth)acrylonitrile, as an optional component, and having a glass transition temperature of 5.degree. to 30.degree. C. and a weight average molecular weight of 20,000 or more, (B) an ultraviolet light absorber, and (C) a water repellent material. A method of temporarily protecting the finished coating film on the automobile body by coating the releasable aqueous coating composition onto a surface of a finished cured coating film coated onto the automobile body.Type: GrantFiled: April 22, 1996Date of Patent: February 10, 1998Assignee: Kansai Paint Co., Ltd.Inventors: Seiji Kashiwada, Shouji Takahashi, Hiroshi Inoue, Kenya Suzuki
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Patent number: 5714530Abstract: A synergistic stabilizer composition for polymers is described containing (i) a hydroxy-group containing triazine, and (ii) a 2,2,6,6-tetraalkyl piperidine compound. Also, described is a method of stabilizing polymers.Type: GrantFiled: June 7, 1995Date of Patent: February 3, 1998Assignee: Cytec Technology Corp.Inventor: Paul Sheldon Waterman
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Patent number: 5714531Abstract: A propylene resin extruded article comprising 100 parts by weight of a propylene resin, 0.03 to 2 parts by weight of a metal salt of a rosin compound, 0.01 to 1 part by weight of a tertiary amine light stabilizer, and 0.01 to 0.5 part by weight of an aromatic phosphite and/or phosphonite antioxidant, and a propylene resin extruded article further comprising 0.01 to 0.5 part by weight of an antistatic agent in addition to the above components. The resin compound comprising the above components does not contaminate extrusion equipment, and the extruded articles are excellent in transparency, hue, thermal aging resistance and, when the antistatic agent is used, are excellent in antistatic property.Type: GrantFiled: January 21, 1997Date of Patent: February 3, 1998Assignee: Japan Polychem CorporationInventors: Kazumasa Fujimura, Hitoshi Inagaki
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Patent number: 5705549Abstract: A rubber composition comprises a particular copolymer containing isobutylene unit, a paramethylstyrene unit and a parabromomethylstyrene unit; natural rubber and/or diene synthetic rubber; carbon black; and at least one hydrazide compound, and has a low value of tan .delta. at 60.degree. C. with maintaining tan .delta. at 0.degree. C. at a high level.Type: GrantFiled: April 15, 1996Date of Patent: January 6, 1998Assignee: Bridgestone CorporationInventor: Masahiro Hojo
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Patent number: 5688951Abstract: New N-substituted piperidines useful as light stabilizers in synthetic resins are disclosed. They are 1-(2,7-octadienyl)-2,2,6,6-tetraalkylpiperidines wherein the alkyl groups are independently selected lower alkyl groups such as methyl or ethyl and the 3 and 5 positions may be substituted by methyls. The ring may be monounsaturated; a new compound 1-(2,7-octadienyl)-2, 2,6,6-tetramethyl-3-pyridine is described.Type: GrantFiled: March 11, 1996Date of Patent: November 18, 1997Assignee: Aristech Chemical CorpInventor: Mark R. Rubino
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Patent number: 5688846Abstract: Polymeric compositions comprising a polymer and photochromic compounds belonging to the class of spiro-pyrans, having the general formula (I): ##STR1##Type: GrantFiled: May 15, 1996Date of Patent: November 18, 1997Assignee: Ministero Dell `Universita` E Della Ricerca Scientifica E TecnologicaInventors: Pietro Allegrini, Nereo Nodari, Vincenzo Malatesta, Luciana Crisci
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Patent number: 5684070Abstract: Tris-aryl-s-triazines of formula VI ##STR1## which contain from one to three resorcinol derived moieties have UV spectra which are red-shifted to the near UV range and provide excellent stabilization to polymeric substrates against the deleterious effects of actinic light.Type: GrantFiled: July 15, 1996Date of Patent: November 4, 1997Assignee: Ciba Specialty Chemicals CorporationInventor: Tyler Arthur Stevenson
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Patent number: 5679733Abstract: A solid solution composition comprisinga) a 2,2,6,6-tetraalkylpiperidinyl compound having a low molecular weight; andb) a 2,2,6,6-tetraalkylpiperidinyl compound having a high molecular weightthat have been mixed in the melt, is an excellent stabilizer for polymeric materials.Type: GrantFiled: June 6, 1995Date of Patent: October 21, 1997Assignee: Clariant Finance (BVI) LimitedInventors: Jan Malik, Sona Pallayova, Peter Danko
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Patent number: 5672644Abstract: Compositions of polyphenylene ether resins and a hindered amine compound that contains an amino group, optionally with polystyrene or modified polystyrene resins, provide improved light resistance over compositions containing a hindered amine compound without an amino group. Good impact resistance and heat resistance are maintained in the present compositions.Type: GrantFiled: April 26, 1996Date of Patent: September 30, 1997Assignee: General Electric Co.Inventor: Kazushige Inoue
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Patent number: 5670564Abstract: Rigid-rod macromonomers, and methods for preparing such macromonomers, having a polyaromatic backbone, solubilizing side groups, and reactive end groups are provided. The macromonomers are chemically incorporated into polymer systems to provide stronger, stiffened polymers.Type: GrantFiled: June 1, 1995Date of Patent: September 23, 1997Assignee: Maxdem IncorporatedInventors: Robert R. Gagne, Matthew Louis Marrocco, III, Mark Steven Trimmer, Neil H. Hendricks
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Patent number: 5668199Abstract: Compounds possessing both a hindered amine moiety, such as a derivative of 2,2,6,6-tetramethylpiperidine, and a hydroxylamine moiety where the N-hydroxy group is not attached to a nitrogen atom in a piperidine ring are valuable stabilizers for protecting polymer compositions against the deleterious effects of actinic light and from the adverse effects of high temperature polymer processing environments.Type: GrantFiled: June 6, 1995Date of Patent: September 16, 1997Assignee: Ciba-Geigy CorporationInventors: Joseph Suhadolnik, Ramanathan Ravichandran, Valerio Borzatta, Graziano Vignali
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Patent number: 5668198Abstract: Compounds possessing both a hindered amine moiety, such as a derivative of 2,2,6,6-tetramethylpiperidine, and a hydroxylamine moiety where the N-hydroxy group is not attached to a nitrogen atom in a piperidine ring are valuable stabilizers for protecting polymer compositions against the deleterious effects of actinic light and from the adverse effects of high temperature polymer processing environments.Type: GrantFiled: June 6, 1995Date of Patent: September 16, 1997Assignee: Ciba-Geigy CorporationInventors: Joseph Suhadolnik, Ramanathan Ravichandran, Valerio Borzatta, Graziano Vignali
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Patent number: 5665273Abstract: The invention relates to novel compounds of the formula I ##STR1## in which the general symbols are as defined in claim 1, as stabilizers for organic materials against oxidative, thermal or light-induced degradation.Type: GrantFiled: April 5, 1995Date of Patent: September 9, 1997Assignee: Ciba-Geigy CorporationInventors: Michael Rasberger, Rita Pitteloud
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Patent number: 5663222Abstract: Novel piperidyl organosiloxanes, well adapted for the light/UV-stabilization of a wide variety of polymer substrates, e.g.Type: GrantFiled: June 7, 1995Date of Patent: September 2, 1997Assignee: Rhone-Poulenc ChimieInventors: Michel Gay, Sylvie Lavault
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Patent number: 5658500Abstract: Described are novel reversible photochromic 2H-naphtho[1,2-b]pyran compounds, examples of which are compounds having certain substituents at the number 5 carbon atom of the naphtho-portion of the naphthopyran and at the 2-position of the pyran ring. Certain substituents may also be present at the number 6, 7, 8, 9 or 10 carbon atoms of the naphtho portion of the naphthopyran. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indoline) type compounds, are also described.Type: GrantFiled: June 14, 1995Date of Patent: August 19, 1997Assignee: Transitions Optical, Inc.Inventors: Anil Kumar, David B. Knowles, Barry Van Gemert
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Patent number: 5658973Abstract: A composition for stabilizing synthetic polymers consisting of a blend ofa) at least a derivative of a high molecular weight polymethylpiperidine of formula (I) ##STR1## wherein the groups are as defined hereinafter, and b) at least one other HALS stabilizer wherein the groups are as defined hereinafter is disclosed. These compositions show photostabilizing and antioxidant properties.Type: GrantFiled: July 26, 1995Date of Patent: August 19, 1997Assignee: 3V Inc.Inventor: Giuseppe Raspanti
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Patent number: 5656206Abstract: Described are novel reversible photochromic 2H-naphtho[1,2-b]pyran compounds, examples of which are compounds having certain substituents at the number 5 carbon atom of the naphtho portion of the naphthopyran and at the 2-position of the pyran ring. Certain substituents may also be present at the number 6, 7, 8, 9 or 10 carbon atoms of the naphtho portion of the naphthopyran. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indoline) type compounds, are also described.Type: GrantFiled: June 14, 1995Date of Patent: August 12, 1997Assignee: Transitions Optical, Inc.Inventors: David B. Knowles, Barry Van Gemert, Anil Kumar
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Patent number: 5650456Abstract: This invention relates to coumarin derivatives of formula (I) ##STR1## where Z represents OR.sup.3 or NR.sup.4 R.sup.5,to their preparation, and to their use for the production of polymers with luminophors on their side chains.Type: GrantFiled: February 9, 1996Date of Patent: July 22, 1997Assignee: Bayer AktiengesellschaftInventors: Chen Yun, Rolf Wehrmann, Burkhard Kohler
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Patent number: 5650464Abstract: The invention relates to a process for the preparation of olefin polymers by polymerization using a transition metal catalyst with the addition of an aminoalkyl-1,1'-biphenyl-2,2'-diylphosphite or aminoalkyl-2,2'-alkylidene-bis(phenyl)phosphite, in conjunction with optional further modifiers. The polymers obtainable in this manner have excellent long-term stability.Type: GrantFiled: October 26, 1995Date of Patent: July 22, 1997Assignee: Ciba-Geigy CorporationInventors: Martin Brunner, Bruno Rotzinger, Thomas Schmutz, Werner Stauffer
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Patent number: 5650098Abstract: Described are novel reversible photochromic 2H-naphtho[1,2-b]pyran compounds, examples of which are compounds having certain substituents at the 5 and 6-positions of the naphtho portion of the naphthopyran and at the 2-position of the pyran ring, e.g., 2,2-bis(4-methoxy phenyl)-5-methoxycarbonyl-6-morpholino-2H-naphtho[1,2-b]pyran. Certain substituents may also be present at the number 7, 8, 9 or 10 carbon atoms of the naphtho portion of the naphthopyran. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indoline) type compounds, are also described.Type: GrantFiled: October 13, 1995Date of Patent: July 22, 1997Assignee: Transitions Optical, Inc.Inventors: Anil Kumar, David B. Knowles, Barry Van Gemert
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Patent number: 5648488Abstract: Tris-aryl-s-triazines of formula V ##STR1## which contain from one one to three resorcinol derived moieties with at least one of said moieties substituted in the 5-position with a group such as, for example, alkyl or phenylalkyl have UV spectra which are red-shifted to the near UV range and provide excellent stabilization to polymeric substrates against the deleterious effects of actinic light.Type: GrantFiled: June 2, 1995Date of Patent: July 15, 1997Assignee: Ciba-Geigy CorporationInventor: Tyler Arthur Stevenson
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Patent number: 5645767Abstract: Described are novel photochromic indeno-fused naphthopyran compounds, examples of which are naphthopyran compounds having a substituted or unsubstituted indeno group, the 2,1 positions of which are fused to the f side of the naphtho portion of the naphthopyran, and certain substituents at the 3-position of the pyran ring. Certain substituents may also be present at the number 5, 6, 7, 8, 9, 10, 11, 12, or 13 carbon atoms of the compounds. These compounds may be represented by the following graphic formula: ##STR1## Also described are polymeric organic host materials that contain or that are coated with such compounds. Optically clear articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., certain other naphthopyrans, benzopyrans, and spiro(indoline)type compounds, are also described.Type: GrantFiled: October 13, 1995Date of Patent: July 8, 1997Assignee: Transitions Optical, Inc.Inventor: Barry Van Gemert
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Patent number: 5643986Abstract: A composition containing 100 parts by weight of a soluble polyimidosiloxane obtained by polymerization and imidation of an aromatic tetracarboxylic acid component and a component comprising a diaminopolysiloxane, an aromatic diamine with a hydroxyl group and optionally another aromatic diamine, 1 to 50 parts by weight of an epoxy resin, and optionally, also 2 to 150 parts by weight of an inorganic filler such as mica, silica or barium sulfate, and an organic solvent. The composition is homogeneously soluble in organic solvents, and when formed into a protective film on a flexible wiring board it has high heat resistance, flexing resistance, adhesion and chemical resistance (against soldering flux and tin plating solutions).Type: GrantFiled: March 14, 1996Date of Patent: July 1, 1997Assignee: Ube Industries, Ltd.Inventors: Seiji Ishikawa, Hiroshi Yasuno, Masayuki Nakatani, Hiroyuki Fukuda, Shigeru Yamamoto
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Patent number: 5639803Abstract: This invention relates to a multi-step process for preparing a storage-stable dispersion of a biocide which comprises the steps of: (a) contacting a heat-swellable resin with a carrier to provide a liquid mixture of a resin and a carrier, (b) heating said liquid mixture to an elevated temperature to cause the resin to swell by virtue of carrier absorption into the resin to provide a swelled resin in said liquid mixture, and (c) adding a biocide to said swelled resin and mixing to provide a homogeneous, storage-stable liquid dispersion.Type: GrantFiled: August 19, 1991Date of Patent: June 17, 1997Assignee: Olin CorporationInventors: Bruce Beardsley Anderson, Rahim Hani
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Patent number: 5637632Abstract: This invention relates to a fire-resistant polyamide resin composition comprising 3 to 30 weight percent melamine cyanurate and 0.02 to 1 weight % of an amide compound or a fatty acid glyceride compound or a combination of said amide and glyceride compound.Type: GrantFiled: June 26, 1995Date of Patent: June 10, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventor: Masahiro Nozaki
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Patent number: 5637706Abstract: Tris-aryl-s-triazines of formula I, II or III ##STR1## which contain from one one to three resorcinol derived moieties with at least one of said moieties substituted in the 5-position with a phenylalkyl group have UV spectra which are red-shifted to the near UV range and provide excellent stabilization to polymeric substrates against the deleterious effects of actinic light.Type: GrantFiled: June 2, 1995Date of Patent: June 10, 1997Assignee: Ciba-Geigy CorporationInventors: Tyler A. Stevenson, Ramanathan Ravichandran, Mark S. Holt, Thuy N. Phan, Jean-Luc Birbaum, Vien V. Toan
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Patent number: 5627286Abstract: Novel compounds containing a heteroatom-bearing bridge and novel complexes of these compounds with metals. The novel compounds and complexes are useful in diagnostic and therapeutic methods.Type: GrantFiled: June 6, 1995Date of Patent: May 6, 1997Assignee: Bracco International B.V.Inventors: Kondareddiar Ramalingam, Natarajan Raju
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Patent number: 5627226Abstract: A composite is provided having improved toughness without reduction in stiffness comprising a polymer matrix having fibers embedded therein wherein the polymer of the matrix is substantially beta polypropylene or a beta polypropylene-olefin copolymer. The composite is made by combining a nucleating agent with a polymer composition selected from the group consisting of alpha polypropylene, an alpha polypropylene-olefin copolymer, alpha polypropylene containing fibers therein and an alpha polypropylene-olefin copolymer having fibers therein, and when the polymer is polypropylene or polypropylene-olefin copolymer, also independently adding fiber to the polymer or copolymer and thereafter inducing nucleation whereby a composite of improved stiffness with no reduction in toughness is formed.Type: GrantFiled: November 3, 1995Date of Patent: May 6, 1997Assignee: Exxon Research & Engineering CompanyInventors: Arnold Lustiger, Cary N. Marzinsky, Yann Devorest
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Patent number: 5624981Abstract: Polyalkylpiperidine-containing acetic acid and 3-aminoacrylic acid derivatives I ##STR1## where R.sup.1 is hydrogen, C.sub.1 - to C.sub.6 -alkyl, formyl, C.sub.2 - to C.sub.6 -alkanoyl, C.sub.1 - to C.sub.12 -alkoxy, C.sub.5 - to C.sub.6 -cycloalkoxy, cyanomethyl, hydroxymethyl, 2-hydroxyethyl or a radical of the formula --CR.sup.3 =CH--CO--OR.sup.4, whereR.sup.3 is hydrogen, C.sub.1 -to C.sub.6 -alkyl or a radical of the formula --CO--OR.sup.4 andR.sup.4 is C.sub.1 - to C.sub.20 -alkyl, C.sub.5 - to C.sub.8 -cycloalkyl, C.sub.7 - to C.sub.18 -aralkyl, phenyl, tolyl or a radical of the formula --(CH.sub.2 CH.sub.2 O).sub.n H or --[CH(CH.sub.3)CH.sub.2 O].sub.n H, where n is a number from 1 to 30,X is O, NH or NR.sup.6, whereR.sup.6 is C.sub.1 - to C.sub.12 -alkyl, andY is hydrogen or a group of the formula =CH--NHR.sup.7 or =CH--NR.sup.6 R.sup.7, whereR.sup.7 is phenyl which can be substituted by one to three C.sub.1 - to C.sub.12 -alkyl, C.sub.1 - to C.sub.Type: GrantFiled: October 7, 1994Date of Patent: April 29, 1997Assignee: BASF AktiengesellschaftInventors: Martin Holderbaum, Alexander Aumueller, Hubert Trauth
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Patent number: 5624982Abstract: A stabilizer system for the suppression of yellowing in styrenic polymers, consisting essentially of a benzotriazole such as 2-(2'-hydroxy-3',5'-di-tert-amylphenyl)benzotriazole, a hydroxybenzocyanurate such as tris-(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate and a hindered amine light stabilizer selected from the group consisting of (i) bis (2,2,6,6,-tetramethyl-4-piperidinyl) sebacate; and (ii) bis-(1,2,2,6,6-pentamethyl-4-piperdinyl) ester of (3,5-di-tert-butyl-4-hydroxybenzyl)-butyl malonate. Additionally a dialkyl thiodipropionate and a zinc dialkyldithiocarbamate may be included in the stabilizer system.Type: GrantFiled: October 30, 1995Date of Patent: April 29, 1997Assignee: Bayer Antwerpen SA/NVInventors: Moh C. O. Chang, Chuan-Ju Chen, Allen R. Padwa
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Patent number: 5623005Abstract: A naphthopyran compound of general formula (I) ##STR1## wherein R.sub.1 represents a group of the formula --NR.sub.2 R.sub.3 wherein each of R.sub.2 and R.sub.3, which may be the same or different, independently represents an alkyl group, or a carbocyclic or heterocyclic group, or R.sub.2 and R.sub.3 taken together with the nitrogen atom to which they are attached represent a heterocyclic ring having one or more hetero atoms and which may optionally carry at least one substituent selected from alkyl, aryl, or heteroaryl groups; each of R.sub.4 and R.sub.5, which may be the same or different, independently represents an alkyl, alkenyl, carbocyclic or heterocyclic group, or R.sub.4 and R.sub.5 taken together with the carbon atom to which they are attached form a carboxylcyclic ring or a heterocyclic ring; and R.sub.6 represents a hydrogen atom or a substituent selected from alkyl, alkoxy, aryl, aryloxy, heteroaryl, halogen, a group of formula R.sub.Type: GrantFiled: November 2, 1995Date of Patent: April 22, 1997Assignee: Pilkington PLCInventors: Martin Rickwood, Katharine E. Smith, Christopher D. Gabbutt, John D. Hepworth
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Patent number: 5621028Abstract: The invention relates to light-scattering polymethacrylate resins with high heat- and weather resistance, which resins may optionally be colored with dyestuffs or pigments. The desirable properties are achieved by addition of a combination of:particles which are light-scattering, and are crosslinked and contain phenyl groups;UV protectants; andradical scavengers.The inventive polymethacrylate molded articles are advantageously employed in illumination technology.Type: GrantFiled: March 3, 1994Date of Patent: April 15, 1997Assignee: Roehm GmbH Chemische FabrikInventors: Hans Lichtenstein, Silvia Ebert
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Patent number: 5610210Abstract: Aminovinylphosphonic esters I ##STR1## where R.sup.1 is cyano, a radical of the formula --CO--OR.sup.6 or a group of the formula ##STR2## R.sup.2, R.sup.3 and R.sup.6 are C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.7 -C.sub.18 -aralkyl, phenyl or tolyl,R.sup.4 is an unsubstituted or substituted phenyl or heterocyclic group defined belowR.sup.5 is hydrogen or C.sub.1 -C.sub.12 -alkyl,R.sup.7 is hydrogen, C.sub.1 -C.sub.6 -alkyl, formyl, C.sub.2 -C.sub.6 -alkanoyl, C.sub.1 -C.sub.12 -alkoxy, C.sub.5 - or C.sub.6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula --CR.sup.8 .dbd.CH--CO--OR.sup.6,R.sup.8 is hydrogen, C.sub.1 -C.sub.6 -alkyl or a radical of the formula --CO--OR.sup.6, andX is oxygen or NH, are used as light, oxygen and heat stabilizers for organic material.Type: GrantFiled: August 9, 1995Date of Patent: March 11, 1997Assignee: BASF AktiengesellschaftInventors: Martin Holderbaum, Alexander Aumueller, Hubert Trauth
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Patent number: 5608110Abstract: Novel compounds containing a heteroatom-bearing bridge and novel complexes of these compounds with metals. The novel compounds and complexes are useful in diagnostic and therapeutic methods.Type: GrantFiled: May 18, 1994Date of Patent: March 4, 1997Assignee: Bracco International B.V.Inventors: Kondareddiar Ramalingam, Natarajan Raju
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Patent number: 5605761Abstract: An article exhibiting durable fluorescent properties comprising a polymeric matrix, dye, and hindered amine light stabilizer, wherein the polymeric matrix is comprised of polycarbonate and the dye is comprised of a dye selected from the group consisting essentially of thioxanthone, perylene imide and/or thioindigoid compounds. The article exhibits durable fluorescence which resists degradation by ultraviolet or visible radiation. The invention is optionally combined with retroreflective elements so that the resultant article has durable fluorescent properties when exposed to sunlight and is also retroreflective. A method of manufacturing an article exhibiting durable fluorescent properties is also disclosed along with a method of increasing the durability of polycarbonate in a dyed system.Type: GrantFiled: May 21, 1996Date of Patent: February 25, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: David M. Burns, Lee A. Pavelka
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Patent number: 5596033Abstract: Blends of a selected long chain N,N-dialkylhydroxylamine and selected hindered amines are surprisingly effective in providing processing, long term heat aging and light stability performance and especially gas fade resistance to polypropylene fibers in the absence of a traditionally used phenolic antioxidant.Type: GrantFiled: June 6, 1995Date of Patent: January 21, 1997Assignee: Ciba-Geigy CorporationInventors: Douglas W. Horsey, Ramanathan Ravichandran
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Patent number: 5583169Abstract: A stabilized non-conductive polyaniline solution comprising from about 1 to bout 10 percent by weight polyaniline or a polyaniline derivative, from about 90 to about 99 percent by weight N-methylpyrrolidone, and from about 0.5 percent by weight to about 15 percent by weight of a solution stabilizing additive selected from the group consisting of hindered amine light stabilizers, polymeric amines, and dialkylamines, percent by weight of additive based on the total weight of polyaniline or polyaniline derivative is provided together with a method for stabilizing a polyaniline solution.Type: GrantFiled: March 10, 1995Date of Patent: December 10, 1996Assignee: The Regents of the University of California Office of Technology TransferInventors: Debra A. Wrobleski, Brian C. Benicewicz
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Patent number: 5578247Abstract: The present invention relates to polymeric networks that can be made electrically conductive in bulk or which have a surface which is electrically conductive, and which networks exhibit resistivities in the ohm to kilo-ohm range. One aspect of the present, thermosetting invention, then, comprises an electrically conductive polymeric network comprising a cured polymeric network which contains an oxidized additive comprising one or more of an oxidizable aniline, thiophene, or pyrrole additive, which additive was oxidized with an oxidizing agent in situ in the cured polymeric network.Type: GrantFiled: August 21, 1995Date of Patent: November 26, 1996Assignee: Three Bond Co., Ltd.Inventors: Vincent D. McGinniss, James L. White, Hiroyuki Mikuni
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Patent number: 5578665Abstract: The present invention relates to novel piperidine compounds of the formula (I) ##STR1## in which A is e.g. a group of the formula ##STR2## where R.sub.4 is e.g. hydrogen or methyl, X.sub.3 is e.g. --O-- or --NH-- and R.sub.5 ' is e.g. ethylene, propylene or decamethylene, R.sub.1 is e.g. methyl, methoxy, ethoxy or OH, R.sub.2 and R.sub.3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X.sub.1 is e.g. as defined for R.sub.1 or is a group (CH.sub.3).sub.3 SiO-- and X.sub.2 is e.g. hydrogen, methyl, ethyl, a group (CH.sub.3).sub.3 Si-- or a group ##STR3## and, when m+n is a number from 3 to 10, X.sub.1 and X.sub.2 together also form a direct bond. The compounds of the formula (I) are effective in stabilizing an organic material against thermal, oxidative and light-induced degradation.Type: GrantFiled: March 7, 1995Date of Patent: November 26, 1996Assignee: Ciba-Geigy CorporationInventors: Primo Carrozza, Valerio Borzatta