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| Number | Title | Issue Date |
| 7279234 | Methods for identity verification using transparent luminescent polymers Disclosed are methods of using a transparent, luminescent polymer for transparent marking and/or labeling for identity verification purposes. Also disclosed are sheets, films, markers, labels and taggants comprising transparent, luminescent polymers. Also disclosed ... | 10/09/2007 |
| 7201859 | Hole transport layer and method for manufacturing the organic EL device by using the same The present invention discloses a hole transport layer of an organic EL display, comprising: a material including one of a PEDOT which is a mixture of a poly (3,4)-ethylenedioxythiophene and a polystyrenesulfonate, a PANI which is a mixture of a polyaniline and a po... | 04/10/2007 |
| 7052765 | Method for manufacturing antibacterial polyester master batches and fibers both containing nano-silver particles A method for manufacturing antibacterial polyester master batches and fibers containing nano-silver particles, the method includes the acts of: mixing a reducing agent, glycol and a silver precursor together to compose a first mixture; esterifying terephthalic acid ... | 05/30/2006 |
| 6780962 | (Meth)acrylic ester binders from glycolyzed aromatic polyesters Described are methacrylate or acrylate binders e.g. obtainable by the steps of (i) generating OH-precursors from at least one aromatic polyester, and (ii) reacting said OH-precursors of step (i) with methacrylic acid and/or acrylic acid to form a respective ester, w... | 08/24/2004 |
| 6657044 | Process for making polytrimethylene terephthalate An improved process for the polymerization of polytrimethylene terephthalate by esterification of terephthalic acid or dimethylterephthalate with 1,3-propanediol (PDO), precondensation of the esterification product to produce a precondensation product, an... | 12/02/2003 |
| 6657036 | Polycondensation resins and polyaddition resins produced by heterogeneous catalysis The invention relates to polycondensation resins which are prepared by polycondensation of compounds having a low molecular weight and separation of small molecules in the presence of at least one hetergeneous catalyst. The invention also relates to polya... | 12/02/2003 |
| 6482915 | Method for producing liquid crystalline polymer The invention provides a method for producing a thermotropic liquid crystalline polymer of high quality at high yield and in short polymerization time, which method includes polymerizing staring monomers I, II, III, and IV, i.e., (I) an aromatic hydroxyca... | 11/19/2002 |
| 5880224 | Aliphatic polyester carbonate and process for producing the aliphatic polyester carbonate A process for producing an aliphatic polyester carbonate which comprises reacting (1) an aliphatic dicarboxylic acid compound containing succinic acid as a main component, (2) an aliphatic dihydroxy compound containing 1,4-butanediol as a main component, ... | 03/09/1999 |
| 5670607 | Miscible forms of electrically conductive polyaniline This invention relates to compositions of miscible electrically conductive polyaniline and to conductive articles formed from such compositions. Specifically, the invention relates to polyaniline dioctylsulfosuccinate which is miscible with some common or... | 09/23/1997 |
| 5623047 | Catalytic compositions for the preparation of poly(ethylene terephthalate) with improved color A catalyst composition for use in a polycondensation reaction for making poly(ethylene terephthalate) from terephthalic acid comprising: (a) an antimony salt catalyst present in a range from about 10 to about 1,000 ppm; (b) a metal salt catalyst of at lea... | 04/22/1997 |
| 5614008 | Water based inks containing near infrared fluorophores The present invention provides inks which contain a near infrared fluorophoric compound incorporated into a water-dissipatible polyester backbone. The inks of the present invention are preferably colorless or "invisible" but could be made slightly colored... | 03/25/1997 |
| 5608032 | Catalytic compositions for the proparation of poly(ethylene terephthalate) with attenuated yellow color A catalyst composition for use in a polycondensation reaction for making poly(ethylene terephthalate) from terephthalic acid comprising: (a) an antimony salt catalyst present in a range from about 10 to about 1,000 ppm; (b) a metal salt catalyst of at lea... | 03/04/1997 |
| 5423432 | Water-dissipatable polyesters and amides containing near infrared fluorescent compounds copolymerized therein 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 mark... | 06/13/1995 |
| 5407657 | Hybrid magnetic resonance contrast agents Novel MRI contrast agents that comprise one or more metal-ion chelates in juxtaposition with one or more free-radical nitroxide compounds in a polymeric or oligomeric molecule. Both the chelate units and the free radical units may, independently, be insid... | 04/18/1995 |
| 5340909 | Poly(1,3-propylene terephthalate) 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. T... | 08/23/1994 |
| 5292855 | Water-dissipatable polyesters and amides containing near infrared fluorescent compounds copolymerized therein 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 mark... | 03/08/1994 |
| 5288841 | Fluidized bed ring-opening polymerization process An improved process for the ring-opening polymerization of ring-opening polymerizable cyclic compounds using a fluidized bed.... | 02/22/1994 |
| 5008366 | Process for producing adhesives from polyethylene terephthalate A process is disclosed for preparing adhesives from polyethylene terephthalate which comprises reacting a trimellitic acid polyester ether with polyethylene terephthalate to prepare a nonlinear copolymer with crosslinking characteristics suitable for use ... | 04/16/1991 |
| 4921929 | Process for the synthesis of a copolyester adhesive resin Isophthalic acid is commonly utilized as a comonomer in the preparation of copolyester resins which are utilized as solution adhesives. Unfortunately, solutions of such resins frequently become hazy due to the presence of cyclic oligomers. This invention ... | 05/01/1990 |
| 4501878 | Process for the preparation of high molecular weight polyesters Disclosed is an improved process for the preparation of high molecular weight linear polyesters. In the preparation of polyesters by formation of a bis-dihydroxy ester prepolymer by transesterifying dimethyl terephthalate with a glycol in the presence of ... | 02/26/1985 |
| 4096122 | Process for the production of polyesters of 1,4-butanediol A process for producing a linear polyester which comprises: (1) condensing excess 1,4-butanediol with a lower alkyl ester of an aromatic dicarboxylic acid at a temperature of less than 200° C; (2) removing uncondensed 1,4-butanediol therefrom so that the reaction ... | 06/20/1978 |
| 4057534 | Method for preventing scale formation in a continuous ester-interchange reaction for production of polyesters Scale formation in a continuous ester-interchange reaction for the production of polyesters, is prevented by subjecting a dialkyl ester of a difunctional carboxylic acid at least 80 mole% of which consists of terephthalic acid and at least one glycol to a... | 11/08/1977 |
| 4049631 | Isophthalic acid/p,p-sulfonyldibenzoic acid/ethylene glycol/neopentyl glycol polyester compositions and containers made therefrom Copolyesters having an oxygen permeability of less than 15 cc.mil/100 in.2. day. atm. (at 50% relative humidity and about 73° F.) and a glass transition temperature in excess of 72° C. and having the following four (4) repeating un... | 09/20/1977 |
