Material Contains A Group Ivb Metal Atom (ti, Zr, Hf) Patents (Class 528/279)
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Patent number: 5654395Abstract: This invention relates to a method of preparing a reinforced polyester composition comprising the steps of:I. mixing(a) at least one cyclic ester oligomer selected from the group consisting of ethylene terephthalate and cyclohexylenedimethylene terephthalate,(b) an organic initiator comprising one to five hydroxy groups which are capable of opening the cyclic ester rings,(c) a catalyst, and(d) a reinforcing material,II. heating the mixture of I at a temperature ranging from 270.degree. C. to 320.degree. C.Type: GrantFiled: May 3, 1991Date of Patent: August 5, 1997Assignee: Eastman Chemical CompanyInventors: Winston Jerome Jackson, Jr., William Ronald Darnell
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Patent number: 5648454Abstract: A process for making high ductile and high melting point polyesters comprising the step of contacting macrocyclic copolyester oligomers having structural units with C.sub.4 alkylene bridging radicals and structural units with bridging radicals other than C.sub.4 alkylenes, and a polymerization catalysts.Type: GrantFiled: February 14, 1996Date of Patent: July 15, 1997Assignee: General Electric CompanyInventor: Daniel Joseph Brunelle
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Patent number: 5616681Abstract: A method for producing an aliphatic polyester having a biodegradability and a higher melting point than conventional aliphatic polyester by suppressing a volatile component generated by side reaction or decomposition reaction with industrially good efficiency and economically in a relatively short period of time, the method enabling a polymerization at vacuum which permits a use of general vacuum pump. The aliphatic polyester can be obtained, for example, by a ring-opening copolymerization of a cyclic acid anhydride with a cyclic ether in a presence of a zirconium compound. The aliphatic polyester also can be obtained by performing a polymerization of raw materials of the aliphatic polyester so as to have a degree of viscosity in the range of 10-10,000 poise when 0.1-30 hours elapsed after the reaction started at reaction temperature of the reaction system under conditions of reaction temperature in the range of 180.degree. C. to 280.degree. C. and reaction pressure in the range of 0.3 mmHg to 3.0 mmHg.Type: GrantFiled: October 31, 1995Date of Patent: April 1, 1997Assignee: Nippon Shokubai Co., Ltd.Inventors: Hiroshi Itoh, Yoshinobu Yamamoto, Koji Fukuhara, Masahiro Shiroshima, Hiroya Kobayashi
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Patent number: 5605764Abstract: Disclosed is a water-dissipatable or dispersible adhesive composition that is useful in forming paper articles and other products that can be recycled through repulping in both neutral and alkaline media. The water-dispersible adhesive composition is preferably a hot melt adhesive that is a low molecular weight, branched copolyester containing a sulfomonomer. Additional utility for the invention resides in the manufacture of recyclable articles where insolubility in body fluids combined with solubility in tap water are required.Type: GrantFiled: October 31, 1995Date of Patent: February 25, 1997Assignee: Eastman Chemical CompanyInventors: Richard A. Miller, Scott E. George, Theron E. Parsons, III, Mark A. Montgomery
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Patent number: 5599900Abstract: An atmospheric pressure process for the continuous production of polyester is disclosed wherein a melt of bis(3-hydroxy propyl) terephthalate, or its low molecular oligomers, obtained by esterifying terephthalic acid or transesterifying dimethyl terephthalate with propylene glycol, is intimately contacted with an inert gas to facilitate polymerization and removal of the reaction byproducts. The propylene glycol evolved and the inert gas are recycled.Type: GrantFiled: April 16, 1996Date of Patent: February 4, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventor: Kamlesh K. Bhatia
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Patent number: 5591800Abstract: Macrocyclic polyester oligomers are converted to linear polyesters by contact at a temperature of about 160.degree.-300.degree. C. with a cyclic titanium catalyst such as di-(1-butyl)-2,2-dimethylpropane-1,3-dioxytitanate, bis(2,2-dimethyl-1,3-propylene) titanate or 1-(1-butoxy)-4-methyl-2,6,7-trioxa-1-titanabicyclo[2.2.2]octane. Such catalysts have high activity and produce linear or branched polyesters of very high molecular weight.Type: GrantFiled: November 30, 1995Date of Patent: January 7, 1997Assignee: General Electric CompanyInventors: Tohru Takekoshi, Eric J. Pearce
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Patent number: 5571876Abstract: Disclosed is a water-dissipatable or dispersible adhesive composition that is useful in forming paper articles and other products that can be recycled through repulping in both neutral and alkaline media. The water-dispersible adhesive composition is preferably a hot melt adhesive that is a low molecular weight, branched copolyester containing a sulfomonomer. Additional utility for the invention resides in the manufacture of recyclable articles where insolubility in body fluids combined with solubility in tap water are required.Type: GrantFiled: October 31, 1995Date of Patent: November 5, 1996Assignee: Eastman Chemical CompanyInventors: Richard A. Miller, Theron E. Parsons, III, Mark A. Montgomery
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Patent number: 5561218Abstract: A process for working up residues which contain dihydroxy compounds and are obtained in the preparation of polyesters by reacting dicarboxylic acids or their esters or ester-forming derivatives with dihydroxy compounds,a) in a first stage a diester of a dicarboxylic acid with an alkanol being subjected to transesterification with a molar excess of a dihydroxy compound,b) the vapors which are obtained in the reaction according to a) and contain predominantly the alkanol formed in the transesterification, excess dihydroxy compounds and oligomeric and polymeric reaction products being transferred to a column in which the alkanol is separated off via the top and the other products are separated off as a bottom product, andc) the bottom product being then subjected to a further treatment to recover the dihydroxy compound,wherein a liquid residue containing dihydroxy compounds is added in stage b) of the process, and the bottom product is discharged in substantially liquid form from the column and then subjected toType: GrantFiled: January 23, 1996Date of Patent: October 1, 1996Assignee: BASF AktiengesellschaftInventor: Peter Braune
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Patent number: 5559205Abstract: A process is provided for preparing basic-dyeable polyester polymer, and shaped articles therefrom, such as fibers, films and bottles, involving using the metal sulfonate salt of a glycollate of isophthalic acid as a polymerization catalyst in making ethylene terephthalate polyester copolymers. This reduces or even avoids the need to add a conventional polymerization catalyst, such as antimony trioxide, especially when making polyesters delustered with titanium dioxide.Type: GrantFiled: May 18, 1995Date of Patent: September 24, 1996Assignee: E. I. du Pont de Nemours and CompanyInventors: Steven M. Hansen, James M. Howell, Cecil E. Reese
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Patent number: 5552513Abstract: An atmospheric pressure process for the continuous production of polyester is disclosed wherein a melt of dihydroxy ethyl terephthalate, or its low molecular oligomers, obtained by esterifying terephthalic acid or transesterifying dimethyl terephthalate with ethylene glycol, is intimately contacted with an inert gas to facilitate polymerization and removal of the reaction by-products. The ethylene glycol evolved and the inert gas are recycled.Type: GrantFiled: May 10, 1995Date of Patent: September 3, 1996Assignee: E. I. du Pont de Nemours and CompanyInventor: Kamlesh K. Bhatia
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Patent number: 5552511Abstract: Disclosed is a water-dissipatable or dispersible adhesive composition that is useful in forming paper articles and other products that can be recycled through repulping in both neutral and alkaline media. The water-dispersible adhesive composition is preferably a hot melt adhesive that is a low molecular weight, branched copolyester containing a sulfomonomer. Additional utility for the invention resides in the manufacture of recyclable articles where insolubility in body fluids combined with solubility in tap water are required.Type: GrantFiled: October 31, 1995Date of Patent: September 3, 1996Assignee: Eastman Chemical CompanyInventors: Richard A. Miller, Scott E. George, Alicia E. Barrett, Theron E. Parsons, III
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Patent number: 5552495Abstract: Disclosed is a water-dissipatable or dispersible adhesive composition that is useful in forming paper articles and other products that can be recycled through repulping in both neutral and alkaline media. The water-dispersible adhesive composition is preferably a hot melt adhesive that is a low molecular weight, branched copolyester containing a sulfomonomer. Additional utility for the invention resides in the manufacture of recyclable articles where insolubility in body fluids combined with solubility in tap water are required.Type: GrantFiled: October 31, 1995Date of Patent: September 3, 1996Assignee: Eastman Chemical CompanyInventors: Richard A. Miller, Theron E. Parsons, III, Mark A. Montgomery
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Patent number: 5548059Abstract: Unsaturated linear polymers have repeating units of a reaction product of a first monomer, a second monomer, a third monomer and optionally a fourth monomer. The linear polymers have a glass transition temperature ranging from about 52.degree. C. to about 61.degree. C. The first monomer should have a weight average molecular weight less than 200. The second monomer may be a dicarboxylic acid or diester which is different than the third monomer. A concentration of second residues of the polymer, derived from the second monomer, ranges from about 3 wt. % to about 15 wt. %, based on the total weight of the polymer. The third monomer is an aromatic dicarboxylic acid or an ester thereof. In the polymer, a concentration of third residues, derived from the third monomer, ranges from about 40 wt. % to about 55 wt. %, based on the total weight of the polymer. The fourth monomer is a diol having a higher molecular weight than the first monomer.Type: GrantFiled: January 3, 1995Date of Patent: August 20, 1996Assignee: Xerox CorporationInventors: Robert D. Bayley, Carol A. Fox, Thomas R. Hoffend, Hadi K. Mahabadi, Enno E. Agur, Guerino Sacripante, Michael S. Hawkins
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Patent number: 5543488Abstract: Disclosed is a water-dissipatable or dispersible adhesive composition that is useful in forming paper articles and other products that can be recycled through repulping in both neutral and alkaline media. The water-dispersible adhesive composition is preferably a hot melt adhesive that is a low molecular weight, branched copolyester containing a sulfomonomer. Additional utility for the invention resides in the manufacture of recyclable articles where insolubility in body fluids combined with solubility in tap water are required.Type: GrantFiled: July 29, 1964Date of Patent: August 6, 1996Assignee: Eastman Chemical CompanyInventors: Richard A. Miller, Scott E. George, Theron E. Parsons, III, Mark A. Montgomery
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Patent number: 5530088Abstract: A heat resistant phosphorus-containing polymeric flame retardant and a process for preparing the same are disclosed. The process is characterized in that in polycondensation a selected metal salt serving as cocatalyst is used to catalyze a phosphorus-containing compound, a saturated dicarboxylic acid or the derivatives thereof, and a diol to form a high phosphorus content, high molecular weight flame retardant. The selected metal salts can promote the polymerization of phosphorus-containing compounds and polyester, and can inhibit side reactions and depolymerization so as to increase the phosphorus content of the resulting products and reduce the manufacturing cost. The flame retardants thus prepared can endure processing at an elevated temperature and thus are suitable for being applied in flame retardant fibers, fabrics, nonwoven fabrics, adhesives, and plastics.Type: GrantFiled: June 21, 1995Date of Patent: June 25, 1996Assignee: Industrial Technology Research InstituteInventors: Yuung-Ching Sheen, Shinn-Jen Chang, Yi-Ni Cheng, Rong-Shuh Chang
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Patent number: 5504148Abstract: The present invention provides a high molecular weight aliphatic polyester which is biodegradable by microorganisms in soils and which is utilized as a molded article as well as a method to prepare the same. This polyester has a structure shown below: ##STR1## as well as those analogous thereto.Type: GrantFiled: November 22, 1994Date of Patent: April 2, 1996Assignee: Unitika Ltd.Inventors: Yoshiaki Iwaya, Katsuyuki Mukai, Masatoshi Kawanishi, Minoru Nishinohara
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Patent number: 5502119Abstract: A polyester-polycarbonate composition comprising (A) at least one polyester prepared by the reaction of at least one alkanediol with at least one dicarboxylic acid or dialkyl ester thereof in the presence of a metallic catalyst, (B) at least one polycarbonate, (C) at least one organosilicate, the organosilicate being present in an amount effective to inhibit ester-carbonate interchange in the composition, optionally, (D) an organic or inorganic colorant, (E) an impact modifier, and (F) a stabilizer. A method for stabilizing polyester-polycarbonate compositions against ester-carbonate interchange is also provided.Type: GrantFiled: February 28, 1995Date of Patent: March 26, 1996Assignee: General Electric CompanyInventor: Douglas G. Hamilton
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Patent number: 5498453Abstract: This invention relates to aliphatic copolyesters prepared from succinic acid (or derivatives thereof) and a process for the preparation thereof. The aliphatic copolyesters contain a second component, 1,4-butanediol, and a third component which is either a diacid or a diol (or derivatives thereof).Type: GrantFiled: June 2, 1995Date of Patent: March 12, 1996Assignee: Eastman Chemical CompanyInventors: Alan W. White, Barry G. Pearcy, Allan S. Jones, Charles M. Buchanan, Robert M. Gardner
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Patent number: 5470941Abstract: A thermoplastic biodegradable resin having a number average molecular weight of 25,000-45,000, which is prepared by polycondensing one or a plurality of dicarboxylic acids represented by formula (I) with one or a plurality of diols represented by formula (II):ROOC--(--CH.sub.2 --).sub.n --COOR (I)HO--(--CH.sub.2 --).sub.m --OH (II)wherein R and R' are both hydrogen or are both methyl, n is 2 to 8 and m is 2 to 6.Type: GrantFiled: December 23, 1993Date of Patent: November 28, 1995Assignee: Sunkyong IndustriesInventors: Hyo Y. Kim, Ki H. Hwang, Hoon Chae, Soo I. Sho, Jung N. Jun
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Patent number: 5466777Abstract: Xanthene polyesters and polyamides are provided resulting from the reaction of alkylene, cycloaliphatic or aromatic diols or organo diamines with xanthene dicarboxylic esters or xanthene dicarboxylic acid halides. These amorphous, or crystalline film forming, high performance thermoplastics which are useful in automotive applications, and include copolymers and blends of such xanthene polymers.Type: GrantFiled: December 15, 1994Date of Patent: November 14, 1995Assignee: General Electric CompanyInventors: Andrew J. Caruso, Julia L. Lee
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Patent number: 5457144Abstract: This invention provides hydrolytically labile polyamide compositions and articles containing an ester derived moiety in the polymer backbone which will degrade after exposure to water over long periods of time.Type: GrantFiled: February 2, 1994Date of Patent: October 10, 1995Assignee: Rohm and Haas CompanyInventors: Norman L. Holy, Newman M. Bortnick
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Patent number: 5453479Abstract: Novel polyesterification catalysts comprising a phosphorus component and a titanium component are disclosed which are useful in preparing improved blends of polyester and polycarbonate resins.Type: GrantFiled: July 12, 1993Date of Patent: September 26, 1995Assignee: General Electric CompanyInventors: Willem F. H. Borman, Thomas G. Shannon
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Patent number: 5446122Abstract: A method for making macrocyclic polyesters comprises the steps of supplying heat and contacting bis-hydroxyalkyl-terminated diesters or oligomers thereof with high boiling point solvents and esterification catalysts.Type: GrantFiled: November 30, 1994Date of Patent: August 29, 1995Assignee: General Electric CompanyInventors: Gregory L. Warner, Daniel J. Brunelle, Paul R. Wilson
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Patent number: 5434239Abstract: An atmospheric pressure process for the continuous production of polyester is disclosed wherein a melt of dihydroxy ethyl terphthalate, or its low molecular oligomers, obtained by esterifying terephthalic acid or transesterifying dimethyl terephthalate with ethylene glycol, is intimately contacted with an inert gas to facilitate polymerization and removal of the reaction by-products. The ethylene glycol evolved and the inert gas are recycled.Type: GrantFiled: October 18, 1983Date of Patent: July 18, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Kamlesh K. Bhatia
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Patent number: 5434294Abstract: A process for the titanate catalyzed preparation of plasticizers from polycarboxylic acids and alcohols which minimizes waste water and is energy efficient. The reaction product is treated with aqueous caustic and is then filtered using an absorbent medium which removes titanium, caustic, acid salts and water. The need for water washing is obviated, and the final plasticizer product has excellent properties.Type: GrantFiled: April 4, 1994Date of Patent: July 18, 1995Assignee: Aristech Chemical CorporationInventors: Joseph Pugach, Thomas W. Smeal
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Patent number: 5434000Abstract: A biaxially oriented polyester film of a polyester composed of an aromatic dicarboxylic acid as a major acid component and at least one glycol component, said polyester film containing 100-20000 ppm of a particulate compound oxide composed of two or more metals (selected from Al, B, Si, Ti, Zr, W, and Fe) and oxygen whose average primary particle diameter is 0.005-0.1 .mu.m. The compound oxide contains 0.1-5 wt % by weight of chlorine. The polyester film finds use as a base film for magnetic tape with improved scratch resistance.Type: GrantFiled: July 26, 1993Date of Patent: July 18, 1995Assignee: Toyo Boseki Kabushiki KaishaInventors: Shigeji Konagaya, Yasuhiro Nishino, Hideto Ohashi
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Patent number: 5423432Abstract: Provided are water-dissipatable, sulfo-containing polyesters and polyester-amides having copolymerized therein thermally stable near infrared flourophoric compounds. The polymers are useful in coating or ink compositions, which are in turn useful for marking articles for identification/authentication purposes. Also provided is a method for invisibly marking such articles and a method for detecting and sorting articles by utilizing the near infrared flourophoric ink or coating compositions.Type: GrantFiled: May 5, 1994Date of Patent: June 13, 1995Assignee: Eastman Chemical CompanyInventors: James J. Krutak, Michael R. Cushman, William W. Parham, Clarence A. Coates, Max A. Weaver, Gabor Patonay
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Patent number: 5418301Abstract: The invention relates to a dendritic macromolecule of the polyester type comprising a central initiator molecule or initiator polymer having one or more reactive hydroxyl groups (A). The groups (A) are under formation of an initial tree structure bonded to reactive carboxyl groups (B) of a monomeric chain extender having the two reactive groups (A) and (B). The tree structure is optionally extended and further branched from the initiator molecule or initiator polymer by addition of further molecules of a monomeric chain extender by means of bonding between the reactive groups (A) and (B) thereof and is thereafter optionally further extended by reaction with a chain stopper. The invention also comprises a process for preparation of the dendritic macromolecule.Type: GrantFiled: July 13, 1994Date of Patent: May 23, 1995Assignee: Perstorp ABInventors: Anders Hult, Eva Malmstrom, Mats Johansson, Kent Sorensen
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Patent number: 5418311Abstract: Polymers, which have polyurethane and/or polyurea groups and contain finely divided fillers, are synthesized by reacting compounds, which contain at least two hydroxyl and/or amino groups, with at least difunctional isocyanates, optionally in the presence of catalysts, and mixing with suitable fillers. The compounds, containing hydroxyl and/or amino groups, and the isocyanates, are separately mixed intimately with finely divided solids so that flowable powders are obtained. The powders obtained are mixed in a stoichiometrically required amount, and the powder mixture is subjected to the action of shear forces at, if necessary, a higher temperature. The mixture of solids obtained has a shelf life of several days or weeks without reaction between the reactive compounds contained therein.Type: GrantFiled: May 9, 1994Date of Patent: May 23, 1995Assignee: Th. Goldschmidt AGInventors: Werner Schafer, Manfred Scheiba, Heribert Seyffert
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Patent number: 5407772Abstract: Unsaturated linear polymers have repeating units of a reaction product of a first monomer, a second monomer, a third monomer and optionally a fourth monomer. The linear polymers have a glass transition temperature ranging from about 52.degree. C. to about 61.degree. C. The first monomer should have a weight average molecular weight less than 200. The second monomer may be a dicarboxylic acid or diester which is different than the third monomer. A concentration of second residues of the polymer, derived from the second monomer, ranges from about 3 wt. % to about 15 wt. %, based on the total weight of the polymer. The third monomer is an aromatic dicarboxylic acid or an ester thereof. In the polymer, a concentration of third residues, derived from the third monomer, ranges from about 40 wt. % to about 55 wt. %, based on the total weight of the polymer. The fourth monomer is a diol having a higher molecular weight than the first monomer.Type: GrantFiled: November 30, 1993Date of Patent: April 18, 1995Assignee: Xerox CorporationInventors: Robert D. Bayley, Carol A. Fox, Thomas R. Hoffend, Hadi K. Mahabadi, Enno E. Agur, Guerino Sacripante, Michael S. Hawkins
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Patent number: 5397827Abstract: The thermoplastic polyester compositions of the present invention are characterized by containing special colloidal silica particles having a straight-chain or branched shape, so when formed into film, particularly film for magnetic tape, there are attained superior abrasion resistance, scratch resistance and sliding property.Type: GrantFiled: July 21, 1992Date of Patent: March 14, 1995Assignee: Toray Industries, Inc.Inventors: Masahiro Kimura, Tomoji Saeki, Masaru Suzuki, Minoru Yoshida, Toshihiro Sasaki
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Patent number: 5391700Abstract: This invention provides a process for producing with industrially good efficiency a polyester having a high melting point and biodegradability. In this process, ring-opening copolymerization of a cyclic acid anhydride containing succinic anhydride as a main component with a cyclic ether containing ethylene oxide as a main component is carried out in the presence of a catalyst by introducing successively the cyclic ether into a reaction vessel containing the cyclic acid anhydride in a melting state or solution state. The rate per hour of introducing the cyclic ether is within the range of 3 to 90 parts by weight per 100 parts by weight of the cyclic acid anhydride, and the reaction vessel has an inside pressure within the range of atmospheric pressure to 50 kgf/cm.sup.2 as a gauge pressure.Type: GrantFiled: April 26, 1994Date of Patent: February 21, 1995Assignee: Nippon Shokubai Co., Ltd.Inventors: Hiroshi Itoh, Takashi Namba, Hiroya Kobayashi, Masashi Yukitake
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Patent number: 5391698Abstract: The invention relates to phosphoric acid polyesters according to the formulae ##STR1## in which R is .dbd.CH.sub.2, .dbd.C.sub.2 H.sub.4 or .dbd.C.sub.3 H.sub.6 and m is 1 to 10 and n is 1 to 6.To prepare these phosphoric acid polyesters, the cyclic phosphoric acid ester 2,4,8,10-tetraoxa-3,9-dioxo-3,9-dihydroxy-phosphaspiro[5.5]-undecane is reacted with tris-hydroxyalkyl cyanurate or tris-hydroxyalkyl isocyanurate at temperatures of 120.degree. to 250.degree. C. in the presence of a catalyst for 2 to 12 hours, while mixing intensively.Type: GrantFiled: January 25, 1994Date of Patent: February 21, 1995Assignee: Hoechst AktiengessellschaftInventor: Horst Staendeke
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Patent number: 5385773Abstract: Disclosed is a process for producing copolyesters having repeat units from a dicarboxylic acid component comprising at least 90 mol % terephthalic acid and a glycol component comprising about 10-95 mol % 1,4-cyclo-hexanedimethanol and from about 90-5 mol % ethylene glycol comprising reacting the dicarboxylic acid component and the glycol component at temperatures sufficient to effect esterification or transesterification and polycondensing the reaction product in the presence of a catalyst and inhibitor system consisting essentially of Mn, Zn, Ti, Ge and P, all parts by weight based on the weight of the copolyester.Type: GrantFiled: April 27, 1993Date of Patent: January 31, 1995Assignee: Eastman Chemical CompanyInventors: Cheuk C. Yau, Clinton Cherry
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Patent number: 5384387Abstract: Novel polyesters prepared from a diol, a dicarboxylic acid or ester forming reactive derivative thereof and an aromatic amino acid, ester or alcohol are disclosed.Type: GrantFiled: May 4, 1993Date of Patent: January 24, 1995Assignee: General Electric CompanyInventors: John A. Tyrell, Gary F. Smith
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Patent number: 5378796Abstract: The present invention relates to a process for preparing copolyesters which involves two steps. The first step is a diol interchange step, and the second step is a polycondensation step. More specifically, the process involves (I) reacting in the presence of a polycondensation catalyst a dihydroxy terephthalate-containing compound having the formula: ##STR1## wherein n is 1 to 10 and at least 99% of the endgroups are ethylene glycol moieties; and 0.01 to 10 moles, based on moles of the dihydroxy terephthalate-containing compound, of a diol, and (II) polycondensing the reaction product of Step (I) to form a copolyester while excess diol is removed until desired molecular weight is obtained. This process does not include a transesterification of a dialkyl ester reaction or an esterification reaction which are usually used to produce copolyesters. Moreover, this process allows for polyethylene terephthalate and copolyesters prepared therefrom to be produced on an integrated production line.Type: GrantFiled: February 9, 1994Date of Patent: January 3, 1995Assignee: Eastman Chemical CompanyInventors: Scott E. George, Douglas C. Hoffman
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Patent number: 5374707Abstract: New compounds including bis-.beta.-hydroxy ethyl bibenzoate containing less than 2.5%, and preferably less than 1%, diethylene glycol and a process for the production of the bis-.beta.-hydroxy ethyl bibenzoate by the condensation of 4,4'-biphenyl dicarboxylic acid and ethylene glycol at low temperature and pressure in the presence of a catalyst are disclosed. Use of the compounds to produce polyesters is also disclosed.Type: GrantFiled: February 18, 1993Date of Patent: December 20, 1994Assignee: Monsanto CompanyInventors: Jawed Asrar, David J. Weinkauff, A. Hameed Bhombal
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Patent number: 5367033Abstract: An ethylene polymer which Is capable of being degraded by microorganisms is provided which comprises a recurring unit represented by the general formula ##STR1## in which R is a divalent hydrocarbon group containing 2 to 20 carbon atoms, R' is a divalent hydrocarbon group containing 1 to 20 carbon atoms and A is a polyethylene segment comprising a recurring unit represented by the formula --CH.sub.2.CH.sub.2 -- and having a number average molecular weight (Mn) of 300 to 300,000, and the ethylene polymer having a number average molecular weight (Mn) of 500 to 5,000,000.Type: GrantFiled: January 25, 1993Date of Patent: November 22, 1994Assignee: Tonen CorporationInventors: Naohiro Mikawa, Satoshi Ueki, Naomi Koyama, Hiroyuki Furuhashi, Tetsuya Morioka, Shigeyuki Toki
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Patent number: 5348985Abstract: A process for making thermoplastic polyester foams comprises the steps of subjecting macrocyclic polyester oligomer precursors to initiators and blowing agents at a constant operating temperature in order to produce foams which unexpectedly display low foam densities.Type: GrantFiled: January 18, 1994Date of Patent: September 20, 1994Assignee: General Electric CompanyInventors: Eric J. Pearce, John W. Carbone
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Patent number: 5342902Abstract: The present invention relates to poly(ester-ether) compositions and to a process for their preparation. In particular, the invention relates to poly(ester-ether) compositions obtained by reacting a polyester which is prepared from a dicarboxylic acid and an aliphatic diol with a dihydroxy aromatic compound in the presence of a metal catalyst. Incorporation of the dihydroxy aromatic compound into the polyester chain causes an increase in the Tg value and increases the thermal stability of the polyester. These poly(ester-ether) compositions are useful in molded articles of all types.Type: GrantFiled: September 7, 1993Date of Patent: August 30, 1994Assignee: Eastman Chemical CompanyInventors: W. Ronald Darnell, W. J. Jackson, Jr.
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Patent number: 5340907Abstract: Disclosed is a process for producing copolyesters having repeat units from a dicarboxylic acid component comprising at least 90 mol % terephthalic acid and a glycol component comprising about 10-95 mol % 1,4-cyclohexanedimethanol and from about 90-5 mol % ethylene glycol comprising reacting the dicarboxylic acid component and the glycol component at temperatures sufficient to effect esterification or transesterification and polycondensing the reaction product in the presence of a catalyst and inhibitor system consisting essentially of Mn, Zn, Ti, Ge and P, all parts by weight based on the weight of the copolyester.Type: GrantFiled: June 28, 1993Date of Patent: August 23, 1994Assignee: Eastman Chemical CompanyInventors: Cheuk C. Yau, Clinton Cherry
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Patent number: 5340909Abstract: A process for producing poly(1,3-propylene terephthalate) from the reaction of either terephthalic acid or a lower dialkyl ester of terephthalic acid and 1,3-propanediol and polymerization of the monomer produced therefrom using a novel catalyst system. The novel catalyst composition includes employing an effective catalytic amount tin in the polycondensation reaction. Using the catalyst system and Hostaperm.RTM. pigments allows for the production of poly(1,3-propylene terephthalate) having yellowness of less than 4 and an IV of at least 0.80 dl/g.Type: GrantFiled: December 18, 1991Date of Patent: August 23, 1994Assignee: Hoechst Celanese CorporationInventors: Marvin L. Doerr, Joseph J. Hammer, J. R. Dees
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Patent number: 5340908Abstract: This invention relates to a process for the preparation of aromatic polyester(s) having an intrinsic viscosity greater than 0.4 dL/g in chloroform at 30.degree. C. which comprises (a) reacting diarylesters of tere and isophthalic acid(s) and dihydric phenol(s) in the melt phase in an inert atmosphere in the presence of a catalyst selected from alkoxides of Group IV B metals and derivatives of Group IV A metals and in the presence of an organic solvent at a temperature in the range of 100.degree.-300.degree. C. to form a prepolymer having intrinsic viscosity in the range of 0.1 to 0.3 dL/g in chloroform at 30.degree. C. (b) purifying the prepolymer using conventional solvent extraction methods and (c) Polycondensing the purified prepolymer at a temperature in the range of 300.degree.-350.degree. C. in presence of a catalyst selected from alkoxides of Group IVB metals and derivatives of Group IVA metals under reduced pressure.Type: GrantFiled: April 1, 1993Date of Patent: August 23, 1994Assignee: Council of Scientific & Industrial ResearchInventors: Bhaskar B. Idage, Nayaku N. Chavan, Sudhakar S. Mahajan, Swaminathan Sivaram
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Patent number: 5322885Abstract: Disclosed is pigmented dispersion containing a non-amine wetting and dispersing agent and a water-dissipatable or dispersible polyester containing sulfonate groups that has improved stability having a substantial number of capped carboxyl groups attached to the sulfomonomer moieties. This polyester can be prepared by capping the carboxyl end groups of the polyester with oxirane compounds or by polymerizing the reactants wherein one reactant is a diol that is a diester adduct of a glycol and a dicarboxylic acid sulfomonomer.Type: GrantFiled: November 2, 1992Date of Patent: June 21, 1994Assignee: Eastman Chemical CompanyInventor: Thauming Kuo
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Patent number: 5302690Abstract: Polyester resins are prepared by reacting a lower alkyl ester of an aromatic dicarboxylic acid with an aliphatic diol to form an aromatic polyester, and which includes (i) subjecting to transesterification reaction conditions in the presence of a titanium compound catalyst a transesterification reaction system having the lower alkyl ester of the aromatic dicarboxylic acid, the aliphatic and between 0.02 to 5.0 mole percent, based on the amount of the lower alkyl ester of the aromatic dicarboxylic acid, of an aromatic sulfonic acid compound represented by the following general formula (I):OH--R--O--Ar--SO.sub.3 M (I)wherein Ar is a p-substituted benzene group or a 2,6-substituted naphthalene group, R is a divalent group selected from among --CH.sub.2 CH(CH.sub.3)--, --CH(CH.sub.3)CH.sub.2 --, --CH.sub.2 CH(CH.sub.3)-- and --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 --, and M is an alkali metal selected from the group consisting of lithium, sodium and potassium.Type: GrantFiled: June 3, 1992Date of Patent: April 12, 1994Assignee: Polyplastics Co., Ltd.Inventors: Kuniaki Kawaguchi, Kenji Hijikata, Toshio Nakane
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Patent number: 5298593Abstract: A thermotropic liquid crystalline polyester is produced by carrying out polycondensation of ester monomer [I-2], an aromatic dicarboxylic acid [II] and an aromatic carboxylic acid [III-2]. The amounts of the compounds [I-2] and [II] are substantially equivalent and the amount of the compound [III-2] is not more than 20 times that of [I-2] by mole. A thermotropic liquid crystalline polyester having good heat resistance, fluidity and uniformity can be produced.Type: GrantFiled: June 24, 1992Date of Patent: March 29, 1994Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Eisuke Fujiwara, Haruyo Kozaki
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Patent number: 5296586Abstract: Disclosed herein is a process for the production of polyester which involves heating a polymerizable monomer or oligomer in an inert liquid which does not dissolve or swell the monomer, oligomer, or polyester product, while boiling the inert liquid and codistilling the low molecular weight byproduct of the polymerization.Type: GrantFiled: October 29, 1992Date of Patent: March 22, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert R. Burch, Edward B. Jones, Steven R. Lustig
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Patent number: 5294695Abstract: The present invention relates to a process for preparing a polyethylene naphthalate possessed with high viscosity, characterized by sloving of various problems of the prior art by controlling the rate of the polycondensation reaction.Particularly, the present invention provides a process for preparing polyethylene naphthalate from an esterification reaction product of naphtalene dicarboxylic acid or an alkyl ester thereof and a diol, which comprises polycondensing the esterification reaction product in the presence of a polycondensation catalyst in two steps wherein the first step is carried out at a pressure ranging from 500 to 30 torr and the second step is carried out at a pressure ranging from 10 to 0.1 torr with controlling the reaction rate such that the differential increase of the intrinsic viscosity of the resultant polymer can satisfy the following equations:IV(t.sub.1)-IV(t.sub.0)<0.4 dl/g (1)IV(t.sub.2)-IV(t.sub.0)>0.3 dl/g (2)wherein: IV(t.sub.Type: GrantFiled: March 15, 1993Date of Patent: March 15, 1994Assignee: SKC LimitedInventors: Kwan-Kyung Lee, Byeong-Ho Cho, Yong-Won Kim
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Patent number: 5292855Abstract: Provided are water-dissipatable, sulfo-containing polyesters and polyester-amides having copolymerized therein thermally stable near infrared flourophoric compounds. The polymers are useful in coating or ink compositions, which are in turn useful for marking articles for identification/authentication purposes. Also provided is a method for invisibly marking such articles and a method for detecting and sorting articles by utilizing the near infrared flourophoric ink or coating compositions.Type: GrantFiled: February 18, 1993Date of Patent: March 8, 1994Assignee: Eastman Kodak CompanyInventors: James J. Krutak, Michael R. Cushman, William W. Parham, Clarence A. Coates, Max A. Weaver, Gabor Patonay
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Patent number: 5290631Abstract: Hydrosoluble/hydrodispersible polyester copolycondensates, well suited for the sizing of textile threads, comprise terephthalate, isophthalate, sulfoaryl dicarboxylate, ethylene glycol and polyoxyethylene glycol recurring structural units, have a glass transition temperature ranging from 15.degree. to 40.degree. C. at 85% relative humidity and the turbidity of aqueous formulations thereof are storage-stable over time; such polyester copolycondensates are conveniently prepared by (i) transesterifying admixture of dimethyl terephthalate, dimethyl sulfoaryl dicarboxylate and ethylene glycol, (ii) introducing isophthalic acid and an additional amount of ethylene glycol into the medium of transesterification and therein directly esterifying same, and (iii) polycondensing the resulting product of transesterification/direct esterification.Type: GrantFiled: October 29, 1992Date of Patent: March 1, 1994Assignee: Rhone-Poulenc ChimieInventors: Etienne Fleury, Yvette Girardeau