Solid Polymer Derived From Aldehyde, Aldehyde Derivative, Or Liquid Polymer Thereof As Sole Reactant And Wherein None Of The Reactants Contains A Plurality Of Methylol Groups Or Derivatives Thereof Patents (Class 525/398)
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Publication number: 20080161488Abstract: Disclosed herein are polyoxymethylene blends having excellent fatigue resistance comprising at least one polyoxymethylene homopolymer having a number average molecular weight of at least about 100,000 and at least one polyoxymethylene homopolymer having a number average molecular weight between about 15,000 and about 30,000.Type: ApplicationFiled: December 19, 2007Publication date: July 3, 2008Inventor: Ramabhadra Ratnagiri
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Patent number: 7297722Abstract: Described is a radially multi-branched polymer represented by the following formula (I): ABi (I), which includes a central molecule (A) to which side-branches (B) are bonded in at least three positions (i?3). Also described are methods for preparing a multi-branched polymer as well as a porous insulating film including a multi-branched polymer.Type: GrantFiled: October 8, 2004Date of Patent: November 20, 2007Assignee: LG Chem, Ltd.Inventors: Jae Ho Cheong, Gwi Gwon Kang, Min Jin Ko, Jung Won Kang, Myung Sun Moon, Byung Ro Kim, Bum Gyu Choi, Dae Ho Kang, Jeong Man Son
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Patent number: 7273909Abstract: Polyethylene glycol aldehyde compounds are provided. Methods of making and using such compounds, as well as chemical intermediates are also provided.Type: GrantFiled: July 21, 2003Date of Patent: September 25, 2007Assignee: Hoffmann-La Roche Inc.Inventor: Chee-Youb Won
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Patent number: 7214432Abstract: A coating composition comprising components A, B and optionally C, wherein component A comprises at least one hydroxy-terminated polyarylate. Component B is an organic species which can react with the hydroxy terminal groups of component A, and component C is a catalyst or mixture of catalysts. The hydroxy-terminated polyarylates are prepared by a solution polymerization method.Type: GrantFiled: September 30, 2003Date of Patent: May 8, 2007Assignee: General Electric CompanyInventors: Glen David Merfeld, Rainer Koeniger, Ali Ersin Acar, Paul Dean Sybert, Zhaohui Su
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Patent number: 7078496Abstract: The invention provides reagents and methods for conjugating a polymer specifically to the ?-amine of a polypeptide. The invention provides monofunctional, bifunctional, and multifunctional PEGs and related polymers having a terminal thioester moiety capable of specifically conjugating to the ?-amine of a polypeptide having a cysteine or histidine residue at the N-terminus. The invention provides reactive thioester-terminated PEG polymers that have suitable reactivity with an N-terminal cysteine or histidine residue of a polypeptide to produce an amide bond between the PEG molecule and the polypeptide.Type: GrantFiled: October 9, 2002Date of Patent: July 18, 2006Assignee: Nektar Therapeutics AL, CorporationInventors: Michael J. Roberts, Zhihao Fang
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Patent number: 7060734Abstract: A composition is disclosed comprising a polymer and a surfactant in a solvent exhibiting a common solubility for the polymer and the surfactant. The composition provides a dosage form for administering a drug over time.Type: GrantFiled: November 22, 2000Date of Patent: June 13, 2006Assignee: Alza CorporationInventors: David E. Edgren, Shu Li, Patrick S.-L. Wong, Gurdish Bhatti, Liang-Chang Dong, Si-Hong Yum
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Patent number: 7053150Abstract: Segmented water soluble polymers, containing a higher molecular weight segment linked to a lower molecular weight segment, are described. In one embodiment, the polymer segments are poly(ethylene glycol) segments. The segmented polymers are functionalized and are useful for conjugation to various moieties such as pharmacologically active substances. Also described are conjugates of such polymers and methods of their preparation.Type: GrantFiled: December 11, 2003Date of Patent: May 30, 2006Assignee: Nektar Therapeutics AL, CorporationInventors: Antoni Kozlowski, Xiaoming Shen, Michael D. Bentley, Zhihao Fang, Tony L. Sander
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Patent number: 7041855Abstract: The present invention provides novel monofunctional polyethylene glycol aldehydes for the pegylation of therapeutically active proteins. The pegylated protein conjugates that are produced, retain a substantial portion of their therapeutic activity and are less immunogenic than the protein from which the conjugate is derived. New syntheses for preparing such aldehydes are described.Type: GrantFiled: November 18, 2003Date of Patent: May 9, 2006Assignee: Sun Bio, Inc.Inventors: Perry Rosen, Kwang Nho
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Patent number: 7009027Abstract: This invention relates to a method for producing and processing polyester block copolymers, in particular, polyester side-chain grafted, rigid side-chain and/or semi-rigid side-chain polymers. According to the invention, the monomeric units of rigid side-chain and/or semi-rigid side-chain polymers are, preferably in the melt, polycondensated together with monofunctionalized and/or difunctionalized, cyclic dicarboxylic acid anhydrides to form polymers having anhydride terminal and/or side groups. The formed polyester anhydrides are reacted with the hydroxyl groups and/or with the ester groups of meltable linear polyesters in order to form side-chain grafted, rigid side-chain and/or semi-rigid side-chained polymers and, together with meltable polyesters, they form molecularly reinforced blends.Type: GrantFiled: November 20, 2001Date of Patent: March 7, 2006Assignee: Thueringisches Institut fuer Textil-und Kunststoff-Forschung e.V.Inventors: Klaus Heinemann, Eberhard Taeger, Erich Meusel, Wolfgang Mueller
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Patent number: 7008986Abstract: The invention relates to thermoplastic moulding materials containing A) 29 to (100 wt. % minus 1 ppb) of at least one thermoplastic polymer. B) 1 ppb to 1 wt. % or at least one polyethyleneimine homopolymer of copolymer, as well as C) 0 to 70 wt. % of other additives, as the essential constituents thereof. The weight percent of constituents A) to C) amounts to 100% in every case.Type: GrantFiled: June 22, 2001Date of Patent: March 7, 2006Assignee: BASF AktiengesellschaftInventors: Burkhardt Dames, Bernd Ziegler
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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: 6956135Abstract: The present invention provides novel monofunctional polyethylene glycol aldehydes for the pegylation of therapeutically active proteins. The pegylated protein conjugates that are produced, retain a substantial portion of their therapeutic activity and are less immunogenic than the protein from which the conjugate is derived. New syntheses for preparing such aldehydes are described.Type: GrantFiled: September 12, 2003Date of Patent: October 18, 2005Assignee: Sun Bio, Inc.Inventors: Perry Rosen, Kwang H. Nho
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Patent number: 6916962Abstract: The present invention provides novel monofunctional polyethylene glycol aldehydes for the pegylation of therapeutically active proteins. The pegylated protein conjugates that are produced, retain a substantial portion of their therapeutic activity and are less immunogenic than the protein from which the conjugate is derived. New syntheses for preparing such aldehydes are described.Type: GrantFiled: May 7, 2003Date of Patent: July 12, 2005Assignee: Sun Bio, Inc.Inventors: Perry Rosen, Kwang Nho
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Patent number: 6908963Abstract: The invention provides reagents and methods for conjugating polymers specifically to the ?-amine of polypeptides in high yield. The invention provides monofunctional, bifunctional, and multifunctional PEGs and related polymers having a thioester moiety capable of specifically conjugating to the ?-amine of a polypeptide having a cysteine or histidine at the N-terminus. The invention provides active thioester derivatives of PEG that have suitable reactivity with an N-terminal cysteine or histidine residue of a polypeptide to produce an amide bond between the PEG and polypeptide. Use of these active esters to prepare PEG-proteins and PEG-peptides is described.Type: GrantFiled: October 9, 2001Date of Patent: June 21, 2005Assignee: Nektar Therapeutics AL, CorporationInventors: Michael J. Roberts, Zhihao Fang
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Patent number: 6863982Abstract: A curable film-forming composition of 5 to 95 weight percent (based on the total resin solids weight in the composition) of a crosslinking agent; 5 to 95 weight percent ot a polymer containing functional groups reactive with the crosslinking agent; and 0.01 to 15 weight percent of at least one additive selected from a reaction product of phosporous acid and: at least one diepoxide; at least one diepoxide and at least one anhydride; at least one diepoxide and at least one anhydride, chain extended with at least one diol; at least one monoepoxide and at least one anhydride, chain extended with at least one diepoxide; and mixtures thereof. The additives in the composition prevent thermal oxidation, minimizing visual effects (i.e., yellowing). A multi-component composite coating includes a base coat and a top coat which may be derived from the above curable film-forming composition.Type: GrantFiled: October 11, 2002Date of Patent: March 8, 2005Assignee: PPG Industries Ohio, Inc.Inventors: Masayuki Nakajima, Charles M. Kania, Stephen G. McQuown, Karen S. Rechenberg, Susan A. Campbell, Kurt A. Humbert, Karen A. Barkac
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Publication number: 20040236015Abstract: Segmented water soluble polymers, containing a higher molecular weight segment linked to a lower molecular weight segment, are described. In one embodiment, the polymer segments are poly(ethylene glycol) segments. The segmented polymers are functionalized and are useful for conjugation to various moieties such as pharmacologically active substances. Also described are conjugates of such polymers and methods of their preparation.Type: ApplicationFiled: December 11, 2003Publication date: November 25, 2004Inventors: Antoni Kozlowski, Xiaoming Shen, Michael D. Bentley, Zhihao Fang, Tony L. Sander
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Patent number: 6821530Abstract: The invention relates to methods of treating mixtures containing polymeric materials, e.g., collagen, to form a polymer that intercalates into the polymeric material. The treatment provides greater tensile strength to the mixture, among other advantages. The polymer is formed of a monomeric unit having at least one catechol group that is oxidized to a quinone upon polymerization.Type: GrantFiled: May 19, 2003Date of Patent: November 23, 2004Assignee: Shriners Hospitals for ChildrenInventors: Thomas J. Koob, Daniel J. Hernandez
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Patent number: 6821630Abstract: Tenacity of a high-molecular polyacetal resin is improved and stress relaxation thereof is also made to easily take place whereby there is provided a polyacetal resin composition in which a creep rupture life (creep characteristic) of polyacetal resin in a metal insert molding, etc. is significantly improved. (A) polyacetal resin having a melt index of 3.0 or less is compounded with (B) 0.05 to 3.0% by weight (in the composition) of silicone oil, (C) 0.1 to 5.0% by weight (in the composition) of elastomer and (D) 0.1 to 5.0% by weight (in the composition) of ultrahigh-molecular weight polyethylene.Type: GrantFiled: January 28, 2003Date of Patent: November 23, 2004Assignee: Polyplastics Co., Ltd.Inventors: Miki Takada, Mitsunori Matsushima
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Patent number: 6818294Abstract: Polyoxymethylene fiber having a high strength and a high modulus of elasticity is provided. Polyoxymethylene fiber comprising polyoxymethylene copolymer having a half-crystallization time of at least 30 sec, when the polyoxymethylene copolymer is cooled from a melted state at 200° C. to 150° C. at a cooling speed of 80° C./min and maintained constantly at the temperature of 150° C.Type: GrantFiled: February 3, 2004Date of Patent: November 16, 2004Assignee: Polyplastics Co., Ltd.Inventors: Takeshi Kikutani, Hidetoshi Okawa
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Publication number: 20040220334Abstract: The invention provides blends of macrocyclic polyester oligomer (MPO) with high-molecular-weight polymer and polymerization catalyst as friable, one-component, ready-to-polymerize materials with long shelf life. The invention also provides methods for preparation and use of the blend materials. The blends are used, for example, in the production of thermoplastics via low-pressure processes, such as rotational molding and powder coating, without modification of existing equipment. The blends are particularly useful where it is desired to exploit the ability to polymerize and crystallize MPO isothermally, but where the melt viscosity of unfilled MPO is too low for use in existing equipment.Type: ApplicationFiled: June 3, 2004Publication date: November 4, 2004Inventors: Yi-Feng Wang, Steven R. Bahr, Paul Willey, Tohru Takekoshi, Sunita S. Baghel, Steven J. Winckler
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Patent number: 6777487Abstract: The present invention relates to a polyacetal ABA type block copolymer having a liquid hydrogenated polybutadiene block hydroxyalkylated at both end having a specific monomer structure in the main chain and a polyacetal resin composition comprising the block copolymer and a specific polymer compound or an inorganic filler. The block copolymer and the resin composition can satisfy 4 characteristics necessary for materials for large-diameter gears, i.e. (1) high cycle capability (high productivity), (2) high roundness, (3) distinguished dimensional stability and (4) distinguished durability at the same time and provide useful materials for large-diameter gears having a pitch circle diameter of 60 mm or more.Type: GrantFiled: March 29, 2001Date of Patent: August 17, 2004Assignee: Asahi Kasei Kabushiki KaishaInventors: Masahiko Niino, Hideki Nakamura, Sumio Komatsu
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Patent number: 6774180Abstract: High molecular weight derivatives of activated poly(ethylene glycol) and the like polymers are prepared in high purity by conjugating a large PEG molecule to a small PEG molecule. Most of the reaction steps can be accomplished on the more readily purified small molecule to avoid laborious purification of the high molecular weight derivatives.Type: GrantFiled: December 18, 2001Date of Patent: August 10, 2004Assignee: Nektar Therapeutics AL, CorporationInventors: Antoni Kozlowski, Xiaoming Shen, Michael David Bentley, Zhihao Fang
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Patent number: 6734260Abstract: The present invention provides a cationic coating composition capable of forming a coating film which is excellent in an electrodepositablly coating property and an adhesive property toward a rust preventive steel plate, a corrosion resistance and a low temperature curability. The cationic coating composition described above comprises as a vehicle component, a xylene-formaldehyde resin-modified, amino group-containing epoxy resin obtained by reacting an epoxy resin (A) having an epoxy equivalent of 180 to 2500 with a xylene-formaldehyde resin (B) and an amino group-containing compound (C).Type: GrantFiled: November 15, 2002Date of Patent: May 11, 2004Assignee: Kansai Paint Co., Ltd.Inventors: Shigeo Nishiguchi, Koji Kamikado, Susumu Midogochi, Akira Tominaga, Akihiko Shimasaki, Hideki Iijima
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Patent number: 6673405Abstract: About 0.001 to 5 parts by weight of a hindered phenol-series compound, about 0.01 to 5 parts by weight of a weather (light)-resistant stabilizer, and about 0.001 to 10 parts by weight of a spiro-compound having a triazine ring are added to 100 parts by weight of a polyacetal resin. The spiro-compound may be a compound represented by the following formula (1). The polyacetal resin composition may further comprise a coloring agent, a processing stabilizer, a heat stabilizer, and others. wherein R1 and R2 are the same or different, each representing an alkylene group, an arylene group, or an aralkylene group.Type: GrantFiled: May 13, 2002Date of Patent: January 6, 2004Assignee: Polyplastics Co., Ltd.Inventor: Hatsuhiko Harashina
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Patent number: 6642321Abstract: To provide a polyacetal resin composition which is highly rigid and has excellent surface hardness, sliding characteristics, etc. That is, a polyacetal resin composition, produced by blending 100 parts by weight of a polyacetal resin (A) with 0.01-100 part(s) by weight of a branched polyacetal copolymer (B) which is obtained by copolymerization of 100 parts by weight of trioxane (a), 0.01-10 part(s) by weight of a monofunctional glycidyl compound (b) and 0-20 part(s) by weight of a cyclic ether compound (c) which is copolymerizable with trioxane.Type: GrantFiled: March 23, 2001Date of Patent: November 4, 2003Assignee: Polyplastics Co., Ltd.Inventors: Hidetoshi Okawa, Yoshihisa Tajima, Kuniaki Kawaguchi
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Publication number: 20030105199Abstract: A polyoxymethylene resin composition consisting essentially of 100 parts by weight of a polyoxymethylene copolymer containing an oxymethylene unit as a main recurring unit and 1 to 30 mol, per 100 mol of the oxymethylene unit, of an oxyalkylene unit having at least 2 carbon atoms as a unit from a comonomer and 1 to 50 parts by weight of a polyalkylene glycol, and a molded article formed of the resin composition. The polyoxymethylene resin composition has high tenacity and high flexibility, is excellent in folding durability and is excellent in compatibility and dispersibility, and it gives a molded article having excellent folding durability and an excellent surface condition.Type: ApplicationFiled: November 12, 2002Publication date: June 5, 2003Applicant: Mitsubishi Gas Chemical Company, Inc.Inventors: Masanori Furukawa, Daigo Nakaya, Katsushige Hayashi, Hiroshi Mimura, Daisuke Sunaga
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Patent number: 6569990Abstract: The present invention relates to biodegradable PHA copolymers comprising at least two randomly repeating monomer units. The present invention further relates to a plastic article comprising a biodegradable copolymer, wherein the biodegradable copolymer comprises at least two randomly repeating monomer units (RRMU) wherein the first RRMU has the structure wherein R1 is H, or C1 or C2 alkyl, and n is 1 or 2; the second RRMU has the structure and wherein at least 50% of the RRMUs have the structure of the first RRMU. The present invention further relates to an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet comprising a film comprising a PHA of the present invention and an absorbent core positioned between the topsheet and the backsheet.Type: GrantFiled: November 10, 2000Date of Patent: May 27, 2003Assignee: The Procter & Gamble CompanyInventor: Isao Noda
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Patent number: 6565960Abstract: The invention relates to methods of treating mixtures containing polymeric materials, e.g., collagen, to form a polymer that intercalates into the polymeric material. The treatment provides greater tensile strength to the mixture, among other advantages. The polymer is formed of a monomeric unit having at least one catechol group that is oxidized to a quinone upon polymerization.Type: GrantFiled: June 1, 2001Date of Patent: May 20, 2003Assignee: Shriners Hospital of ChildrenInventors: Thomas J. Koob, Daniel J. Hernandez
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Patent number: 6559243Abstract: The present invention relates to glyoxylic compound comprising one or more active ingredient. By the present invention, a delayed release of the active ingredient is provided upon contact of the compound with an aqueous medium.Type: GrantFiled: February 8, 2001Date of Patent: May 6, 2003Assignee: The Procter & Gamble CompanyInventors: Stephen Wayne Heinzman, Simon Timothy Farrington Sawyer, Robert J. Strife, Arnaud Pierre Struillou
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Patent number: 6551702Abstract: Aqueous melamine resin dispersions comprise as discontinuous phase a melamine resin stabilized with a combination of a cationic protective colloid and an anionic protective colloid.Type: GrantFiled: October 26, 2000Date of Patent: April 22, 2003Assignee: BASF AktiengesellschaftInventors: Norbert Biedermann, Günter Scherr, Christof Jäckh, Jakob Decher, Valerie Andre, Werner Schnurr, Ingolf Hennig
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Patent number: 6528582Abstract: A one-step, in-situ, process for producing a high solids content emulsion or dispersion of partially or totally crosslinked urea formaldehyde (UF), melamine formaldehyde (MF), or melamine urea formaldehyde (MUF) resin droplets or particles, by forming a reaction mixture of (i) aqueous formaldehyde (formalin), (ii) at least one water-soluble protective colloid, (iii) water and (iv) optionally a surfactant, and mixing the reaction mixture in a reaction vessel; optionally adjusting the initial pH of the reaction mixture according to a desired value as needed; adding (i) urea or substituted urea, (ii) melamine or substituted melamine, or (iii) a mixture thereof, to the reaction mixture; and heating the reaction mixture to a temperature at which condensation takes place between the (i) urea or substituted urea, (ii) the melamine or substituted melamine, or (iii) the mixture thereof, and the formaldehyde to form a urea formaldehyde, melamine formaldehyde or melamine urea formaldehyde resin, and holding the reactionType: GrantFiled: March 30, 2001Date of Patent: March 4, 2003Assignee: Neste Resins CanadaInventors: Kwok Tang, Guomin Bian, Leena Matilainen, Sinikka Ingelin
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Patent number: 6506850Abstract: A polyoxymethylene copolymer having a melting point of 167° to 173° C. and containing a low molecular weight polyoxymethylene copolymer in an amount of not higher than 5000 ppm, and a composition thereof. The copolymer is obtainable by subjecting unstable terminal groups to heat treatment in the presence of 0.05 to 50 ppm by weight of a quaternary ammonium compound. Further, the above composition is used for working parts such as a gear and a cam; apparatuses for image, music and telecommunication; interior and exterior parts for an automobile; and the like.Type: GrantFiled: February 21, 2001Date of Patent: January 14, 2003Assignee: Asahi Kasei Kabushiki KaishaInventors: Noritaka Tanimura, Atushi Nanasawa
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Patent number: 6506838Abstract: Modified oxymethylene polymers comprising a linear polymer of oxymethylene repeat units, blocked at one end by at least one terminal group selected from the group consisting of an alkylene oxide as an adduct to alcohol and an alkylene oxide as an adduct to carboxylic acid, the linear polymer excluding the terminal group having a number average molecular weight of 10,000-500,000 and the modified oxymethylene polymer having a molecular weight distribution (Mw/Mn) of not more than 2.5, obtained by anionic polymerization of formaldehyde and the alkylene oxide as an adduct to alcohol and/or carboxylic acid. The present modified oxymethylene polymers can give moldings with improved repeated impact resistance at the welded parts and controlled smell generation, and improved sliding characteristics, wherein the sliding characteristics are further improved upon combination with an olefinic polymer.Type: GrantFiled: October 25, 2000Date of Patent: January 14, 2003Assignee: Asahi Kasei Kabushiki KaishaInventor: Toshiharu Seyama
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Publication number: 20020198330Abstract: Novel coating solutions are disclosed that promote desirable adhesion to substrates formed from nylon, polyester, or a combination thereof. These coating solutions include nylons having specific solubility together with select formaldehyde resins and resin mixtures. The solutions provide superior adhesion and are therefore attractive to thread applications as well as formed structures.Type: ApplicationFiled: March 13, 2002Publication date: December 26, 2002Inventor: Rolando Umali Pagilagan
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Patent number: 6489432Abstract: The present invention provides a polymer that can be used as an anti-refelctive coating (ARC) polymer, an ARC composition comprising the same, methods for producing the same, and methods for using the same. The polymer of the present invention is particularly useful in a submicrolithographic process, for example, using KrF (248 nm), ArF (193 nm), or F2 (157 nm) laser as a light source. The polymer of the present invention comprises a chromophore that is capable of absorbing light at the wavelengths used in a submicrolithographic process. Thus, the ARC of the present invention significantly reduces or prevents back reflection of light and the problem of the CD alteration caused by the diffracted and/or reflected light. The ARC of the present invention also significantly reduces or eliminates the standing wave effect and reflective notching.Type: GrantFiled: December 22, 2000Date of Patent: December 3, 2002Assignee: Hyundai Electronics Industries Co., Ltd.Inventors: Min-Ho Jung, Sung-Eun Hong, Jae-Chang Jung, Geun-Su Lee, Ki-Ho Baik
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Publication number: 20020137876Abstract: A process for producing amino resin particles includes: a reaction process for obtaining a reaction solution containing an amino resin precursor which is obtained by a reaction of an amino compound with formaldehyde, and having a viscosity in a range of from 2×10−2 Pa.s to 5.8×10−2 Pa.s at a temperature in a range of from 95° C. to 98° C.; an emulsion process for obtaining an emulsion by emulsifying the reaction solution; and a curing process for curing the amino resin precursor in the emulsion state by adding a catalyst to the emulsion. With this producing process, it is possible to readily produce amino resin particles with an essentially uniform particle size (narrow particle size distribution).Type: ApplicationFiled: December 28, 2001Publication date: September 26, 2002Applicant: Nippon Shokubai Co., Ltd.Inventors: Yasuhiro Yamamoto, Shuji Shimizu, Masafumi Inoue, Hideki Oishi
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Patent number: 6437053Abstract: A process for the continuous preparation of a thermoplastic molding composition with narrow scatter of the melt flow index, which comprises mixing two or more chemically identical starting materials of different melt flow index in a pelletizing extruder fitted with an on-line melt flow index meter and adjustable metering systems.Type: GrantFiled: June 13, 2000Date of Patent: August 20, 2002Assignee: Ticona GmbHInventor: Gerhard Reuschel
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Patent number: 6426393Abstract: To provide polyacetal which has excellent shock resistance, rigidity and creep resistance as essential properties of the polymer and makes a high flowability and an excellent molding property upon molding possible by improving the thermal stability. In the manufacture of a polyacetal copolymer by a copolymerization of 100 parts by weight of trioxane (a) with 0.05-20 parts by weight of a cyclic ether compound (b) which is copolymerizable with trioxane and 0.001-10 parts by weight of a mono-functional glycidyl compound (c), the mono-functional glycidyl compound (c) having a chlorine content of not more than 0.3% by weight is used.Type: GrantFiled: February 1, 2001Date of Patent: July 30, 2002Assignee: Polyplastics Co., Ltd.Inventors: Yoshihisa Tajima, Hidetoshi Okawa
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Patent number: 6403725Abstract: Disclosed is a metal containing polymer composition comprising; a metal overbased imide or ester functionalized polymer prepared by reacting (A) a polymer comprising (A1) an acidic functionalized polymer or ester functionalized polymer; (A2) an acidic mixed ester-acid of a carboxy containing interpolymer; or (A3) an ester functionalized polymer comprising a lactone and (B) a metal overbased composition that contains a reactive basic functionality comprising (B1) a metal overbased amine wherein the reactive basic functionality is a primary or secondary amino group; (B2) a metal overbased hydroxy substituted carboxylic acid wherein the reactive basic functionality is a hydroxy group; or (B3) a metal overbased dispersant wherein the reactive basic functionality is a primary or secondary amino group.Type: GrantFiled: August 20, 1999Date of Patent: June 11, 2002Assignee: The Lubrizol CorporationInventors: Nai Z. Huang, Richard M. Lange
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Patent number: 6403670Abstract: The present invention relates to a thermosetting composition which comprises: (A) a polyhemiacetal ester resin having a repeat unit represented by formula (1): wherein R1 and R2 are a bivalent organic group, and Y is an oxygen atom or a sulfur atom, and (B) a compound having in the molecule two or more reactive functional groups which can form a chemical bond with the carboxyl group, and optionally, (C) an acid catalyst. The thermosetting composition gives cured products having excellent chemical properties, physical properties, adhesion, smoothness and weathering resistance at relatively lower temperatures and have excellent storage stability, and can be utilized as solvent cutback type, solventless liquid type of 100% effective component or powder thermosetting compositions.Type: GrantFiled: October 13, 2000Date of Patent: June 11, 2002Assignee: NOF CorporationInventors: Masahiro Ishidoya, Masayuki Takemoto, Atsushi Sato, Koji Sato, Shun Saito
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Patent number: 6399198Abstract: A nonaqueous sizing for glass fibers useful for reinforcement of polymers. The sizing composition comprises one or more film formers miscible with the polymer to be reinforced, one or more coupling agents and one or more powders. The sizing composition of the invention provides a glass fiber which has improved processability and notched izod without any loss in dispersability characteristics of the glass pellets.Type: GrantFiled: December 23, 1998Date of Patent: June 4, 2002Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: David G. Miller, Leonard J. Adzima, David J. Wamer
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Patent number: 6388049Abstract: A low-molecular-weight oxymethylene polymer characterized by having a straight-chain molecular structure, a number-average molecular weight of 1,000 to 8,000 and a molecular weight distribution (Mw/Mn) of 1.0 to 3.0, and containing 0 to 30 mol % of a co-monomer.Type: GrantFiled: February 28, 2001Date of Patent: May 14, 2002Assignee: Asahi Kasei Kabushiki KaishaInventors: Hiroshi Yokoyama, Yukihiro Ban
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Patent number: 6369132Abstract: Fine particulate thermoplastic polymers [e.g., hydrophobically modified polyether-polyurethanes, polyacrylates, polyvinyl alcohol, polyether-polyols, polyacrylamide, aminoplast-polyethers and poly(acetal- or ketal-polyethers] having reduced bulk density, process of making same by dissolving the polymer and rapidly insolubilizing the polymer from the solution and process of using aqueous suspensions of such polymers as thickeners for aqueous systems.Type: GrantFiled: October 17, 1997Date of Patent: April 9, 2002Assignee: Hercules IncorporatedInventor: Arjun Chandra Sau
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Publication number: 20020006985Abstract: Fine particulate thermoplastic polymers [e.g., hydrophobically modified polyether-polyurethanes polyacrylates, polyvinyl alcohol, polyether-polyols, polyacrylamide, aminoplast-polyethers and poly (acetal- or ketal-polyethers] having reduced bulk density, process of making same by dissolving the polymer and rapidly insolubilizing the polymer from the solution and process of using aqueous suspensions of such polymers as thickeners for aqueous systems.Type: ApplicationFiled: October 17, 1997Publication date: January 17, 2002Inventor: ARJUN CHANDRA SAU
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Patent number: 6296920Abstract: The invention relates to a reversible thermotropic plastics molding compound. Thermotropic molding compounds of this kind are used, amongst other things, for glass and coverings for shading and light/heat regulation in houses, cars, etc. The molding compound according to the invention consists of two compounds which are not thermodynamically miscible with one another. The first component consists of a plastics material, while the second component is not liquid-crystalline and has a refractive index which is the same as the first component in the transparent range and the temperature dependency of which is different from the temperature dependency of the refractive index of the first component. On raising the temperature, the transmission of the molding compound is thus altered.Type: GrantFiled: August 27, 1999Date of Patent: October 2, 2001Assignee: EMS-Chemie AGInventors: Friedrich Buehler, Manfred Hewel
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Patent number: 6291077Abstract: A lactone chain-extended polyester polyol of the present invention comprises the reaction product of a lactone and a previously chain-extended phenolic-based hydroxyl compound. The previously chain-extended phenolic-based hydroxyl compound may comprise the reaction product of (i) a lactone or an alkoxylating agent selected from the group consisting of alkylene oxides and alkylene carbonates, and (ii) a phenolic aralkylation polymer comprising the reaction product of a phenolic monomer having at least two free reactive positions; a styrene derivative; and a coupling agent. The previously chain-extended phenolic-based hydroxyl compound also may be chain-extended by reacting with a lactam to produce a lactam chain-extended polyester polyamide. The polyols and polyamides of the present invention provide unique combinations of hard and soft functionalities, which translates into materials exhibiting a unique combination of toughness and hardness.Type: GrantFiled: August 28, 2000Date of Patent: September 18, 2001Assignee: Georgia-Pacific Resins, Inc.Inventors: Rajan Hariharan, David A. Hutchings, Kenneth A. Bourlier, Ellen V. Nagy
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Publication number: 20010007006Abstract: A polyacetal resin composition comprising 30-90% by weight of polyacetal copolymer (A) having a melt index of less than 1.0 g/10 min. and 70-10% by weight of polyacetal copolymer (B) having a melt index of 1.0-100 g/10 min., both melting points of (A) and (B) being 155°-162° C., or a difference in melting point between (A) and (B) being not less than 6° C., has distinguished toughness and creep resistance.Type: ApplicationFiled: December 15, 2000Publication date: July 5, 2001Inventors: Noritaka Tanimura, Tadao Matsushika
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Patent number: 6245853Abstract: A one-step, in-situ, process for producing a high solids content emulsion or dispersion of partially or totally crosslinked urea formaldehyde or melamine formaldehyde resin droplets or particles, by forming a reaction mixture of (i) aqueous formaldehyde (formalin), (ii) at least one water-soluble protective colloid, (iii) water and (iv) optionally a surfactant, and mixing the reaction mixture in a reaction vessel; optionally adjusting the initial pH of the reaction mixture according to a desired value as needed; adding (a) urea, substituted urea, or a mixture thereof, or (b) melamine, substituted melamine, or a mixture thereof, to the reaction mixture; and heating the reaction mixture to a temperature at which condensation takes place between the (a) urea, substituted urea, or the mixture thereof, or (b) melamine substituted melamine, or the mixture thereof, and the formaldehyde to form a urea formaldehyde or melamine formaldehyde resin, and holding the reaction mixture at that temperature or a higher temperaType: GrantFiled: May 16, 2000Date of Patent: June 12, 2001Assignee: Neste Resins CanadaInventors: Kwok Tang, Guomin Bian, Leena Matilainen, Sinikka Ingelin
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Patent number: 6228953Abstract: A method of preparing a carbamate functional polymer or oligomer is provided. The method comprises: (a) preparing a reaction mixture comprising a lower alkyl carbamate, a hydroxyl functional polymer or oligomer, and an alcohol different from and having a higher boiling point than an alcohol from which the lower alkyl carbamate is derived; and (b) heating the reaction mixture to form a carbamate functional polymer or oligomer. Also provided is a method of preparing a carbamate functional acrylic polymer by preparing a similar reaction mixture using acrylic monomers containing hydroxyl groups or groups that can be converted to hydroxyl groups and heating the reaction mixture in the presence of a free radical initiator and an esterification catalyst.Type: GrantFiled: August 20, 1999Date of Patent: May 8, 2001Assignee: PPG Industries,Ohio, Inc.Inventors: Steven V. Barancyk, Debra L. Singer
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Patent number: 6225416Abstract: The novel molding made from a combination of polyacetal with directly molded-on function elements is distinguished by the fact that the function elements comprise one or more elastomers. Such elastomers comprise partially or fully hydrogenated nitrile rubbers, one- or multicomponent silicone rubbers or sulfur-containing rubbers.Type: GrantFiled: March 30, 2000Date of Patent: May 1, 2001Assignee: Hoechst AktiengesellschaftInventors: Frank Reil, Frank Reuter, Ulrich Haack, Gerhard Reuschel