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7579428 |
Process for preparation of polyesters without solid state polymerization
Polyesters prepared using germanium catalyst in the finishing stage at temperatures less than 285° C. exhibit low loss of Ge catalyst and excellent low acetaldehyde generating characteristics.
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7557174 |
Carboxy-terminated oligomeric polyester compositions and method for making
The present invention provides carboxy-terminated oligomeric polyester compositions useful in the preparation of “weatherable” polymeric materials, for example weatherable...
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7550531 |
Polymerization of macrocyclic polyester oligomers using metal amide and metal alkoxide catalysts
Metal amide and metal alkoxide species have been found to catalyze the ring opening polymerization of macrocyclic polyester oligomers. The catalysts provide rapid polymerization, high monomer...
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7544762 |
Catalyst for preparation of polyester and process for preparing polyester using the catalyst
A polyester having a good color tone (a high L value and a low b value) and a low acetaldehyde content is obtained by using a catalyst containing a reaction product of (A) a titanium compound (1)...
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7531617 |
Continuous process for producing poly(trimethylene terephthalate)
This invention relates to a continuous process for production of poly(trimethylene terephthalate), wherein gaseous 1,3-propanediol by product resulting from the process is condensed in a condenser,...
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7528219 |
Method for incorporating nitrogen containing methine light absorbers in PET and compositions thereof
The present invention is a method for efficiently incorporating a nitrogen containing methine light absorber into a polyester resin. The method includes forming a reaction mixture comprising...
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7527809 |
Polyhydroxyalkanoate-containing magnetic structure, and manufacturing method and use thereof
A structure containing polyhydroxyalkanoate and a magnetic substance includes an external phase part containing polyhydroxyalkanoate and an internal phase part contained in the external phase part,...
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7524921 |
Continuous manufacture of poly(trimethylene terephthalate)
This invention relates to a continuous process for production of poly(trimethylene terephthalate), wherein gaseous 1,3-propanediol by-product resulting from the process is condensed in a condenser,...
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7462682 |
Orthochromatic polyester resin composition and molding product thereof
A tinted polyester resin composition having good color and useful for many uses (fibers, films and other formed articles) contains an aromatic polyester polymer and a tinting agent; the tinting...
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RE40571 |
Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester
The present invention provides a catalyst for polyester production capable of producing a polyester with high catalytic activity, a process for producing a polyester using the catalyst and a...
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7439317 |
Amorphous polyester chip and method for production thereof, and method for storage of amorphous polyester chip
An amorphous polyester chip having superior processing ability is characterized by a moisture content of not more than 300 ppm and a fine particle content of not more than 500 ppm. A preferred...
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7368523 |
Polyester polymer and copolymer compositions containing titanium nitride particles
Polyester compositions are disclosed that include polyester polymers or copolymers having incorporated therein titanium nitride particles that provide one or more of the following advantages:...
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7348128 |
Photosensitive resin based on saponified polyvinyl acetate photosensitive resin composition, method of forming aqueous gel from the same, and compound
A photosensitive resin which exhibits excellent storage stability, affinity, miscibility, or solubility with respect to a variety of compounds, and high sensitivity can be solidified even under...
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7335719 |
Polyester based on poly(trimethylene terephthalate)
A polyester based on poly(trimethylene terephthalate) consisting essentially of trimethylene terephthalate repeating units, comprising at least one kind of compound selected from the group...
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7332562 |
Biodegradable linear random copolyester and process for preparing it and use of the same
The present invention relates to a biodegradable copolyester of high molecular weight and narrow molecular weight distribution. The copolyester has a M w of 100,000-600,000 g/mol, and a molecular...
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7300998 |
Polyester resin and catalyst for polyester production, process for producing polyester resin with the catalyst, polyester resin obtained with the catalyst, and hollow molded container comprising the polyester resins
The object of the present invention is to provide a high quality polyester resin having high productivity, stability and safety, a catalyst for polyester production with high catalytic activity, a...
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7259227 |
Method for continuous production of high-molecular weight polyesters and device for implementation of the method
The invention relates to a method for producing high-molecular weight polyesters, such as e.g. polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polynaphthalene terephthalate...
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7244806 |
Method and device for the continuous production of polyesters
In the continuous production of polyesters, the esterification/transesterification of dicarboxylic acids or esters of the dicarboxylic acids with diols is performed in at least one reaction stage,...
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7241855 |
Method for the manufacture of polyesters
A method is described for the manufacture of polyesters of aromatic dicarboxylic acids with aliphatic and/or cycloaliphatic dials, in which an aromatic dicarboxylic acid in the presence of a...
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7226888 |
Composition comprising titanium and aluminium and polyester production
A composition and a process for using the composition are disclosed. The composition comprises, or is produced from, a titanium chelate and an aluminum hydroxyhalide, in a solvent. A process...
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7205357 |
Polyester resin composition for toner
A polyester resin composition for a toner comprising a titanium compound in an amount of from 0.005 to 4% by weight, and an inorganic phosphorus compound in an amount of from 0.001 to 5% by weight;...
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7196159 |
Process for producing polytrimethylene terephthalate
A process for the production of polytrimethylene terephthalate (PTT), wherein the process comprises:
(i) one or more esterification steps, wherein terephthalic acid (TPA) or an alkyl diester of...
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7196158 |
Knitted/woven fabric of polyester fiber
A knitted/woven fabric of polyester fibers is produced from a polyester polymer obtained by condensation-polymerizing an aromatic dicarboxylate in the presence of a catalyst which comprises a...
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7189797 |
Process for producing poly(ethylene-aromatic dicarboxylate ester) resin and resin product
A poly(ethylene aromatic dicarboxylate ester) resin usable for the production of fibers, films and bottle-formed articles, is produced by polycondensing a diester of an aromatic dicarboxylic acid...
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7183029 |
Dry toner, toner kit, and image forming apparatus and process cartridge using the dry toner
A toner for forming a full color image, which includes a colorant and a binder resin including a polyester resin which is prepared by a polycondensation ester reaction in the presence of a...
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7169874 |
High refractive index polymeric siloxysilane compositions
Optically transparent, relatively high refractive index polymeric compositions and ophthalmic devices such as intraocular lenses, contact lenses and corneal inlays made therefrom are described...
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7144974 |
Polyester production method, polyester composition, and polyester fiber
In a polyester production method, a titanium compound having a radical selected from a carbonyl group, a carboxyl group, or an ester group, and a phosphorous compound having a structure illustrated...
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7129301 |
Method for preparing a biodegradable copolyester
A method for preparing a biodegradable copolyester includes: (a) optionally preparing an aromatic prepolymer by reacting a first aromatic dicarboxylic compound with a first aliphatic glycol; (b)...
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7101949 |
High refractive index polymeric siloxysilane compositions
Optically transparent, relatively high refractive index polymeric compositions and ophthalmic devices such as intraocular lenses, contact lenses and corneal inlays made therefrom are described...
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RE39246 |
Esterification catalysts and processes therefor and therewith
A catalyst composition is disclosed. The composition comprises a titanium compound, a complexing agent, hypophosphorous acid or its metal salt, water and optionally a solvent. The complexing agent...
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7057006 |
Stable aqueous solutions comprising titanium and zinc and process therewith
A composition that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a...
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7052764 |
Shaped articles comprising poly[(trimethylene-co-dianhydrosugar ester) dicarboxylate] or poly(trimethylene-co-dianhydro-dicarboxylate with improved stability
A shaped article comprising poly[(trimethylene-co-dianhydrosugar ester) dicarboxylate] or poly(trimethylene-co-dianhydro-dicarboxylate having improved stability in the form of less change of Tg and...
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7049390 |
Poly(1,3-propylene-co-1,4:3,6-dianhydro-D-sorbitol terephthalate) and manufacturing process
A melt polymerization process for the preparation of poly(1,3-propylene-co-isosorbide) terephthalate (3GIT), new 3GITs and products made from the 3GITs. The process comprises (a) providing a...
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7049041 |
Resin for toner binder and toner composition
The present invention provides a toner binder for developing electrostatic charge images,
which binder comprises a polycondensate polyester resin, said polyester resin being a product formed...
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7048995 |
Polyester resin, molded product made thereof and process for production of polyester resin
A polyester resin produced by polycondensing a dicarboxylic acid component containing an aromatic dicarboxylic acid or its ester-forming derivative as the main component and a diol component...
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7030057 |
Catalyst for esterification and transesterification and process for producing ester
This invention relates to an activated titanium catalyst used in an esterification reaction and/or a transesterification reaction, and a method of manufacturing esters having a low acid value and...
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7026035 |
Laminated film for optical use
There is provided a laminated film for optical use comprising a polyester film which has a lubricity layer containing globular particles in at least one side thereof, wherein the laminated film has...
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7022806 |
Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters
Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic...
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6998463 |
Polyester resin and process for its production
A polyester resin characterized in that the content of the copolymerized components other than the terephthalic acid component and the ethylene glycol component, is not more than 4 mol % based on...
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6998462 |
Polyester process
Disclosed is a process that comprises contacting, in the presence of an esterification or transesterification or polycondensation catalyst composition, a toner, and a phosphorus compound, a...
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6984601 |
Preparing condensation polymerization resin with catalyst for toner
A catalyst for preparing condensation polymerization resin for a toner comprising at least one compound selected from the group consisting of a titanium compound represented by the formula (I):...
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6967235 |
Method for the production of polybutylene terephthalate
In a process of producing PBT, a mixture of BDO and TPA is esterified in the presence of a catalyst solution, and the esterification product is polycondensated. To avoid the formation of deposits...
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6858701 |
Wholly aromatic polyester carbonate and process therefor
A wholly aromatic polyester carbonate having a good color and excellent heat resistant stability. This polymer had an extremely low alkali metal content of 10 ppm or less. This polymer is...
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6855797 |
Stable aqueous solutions comprising titanium and zinc and process therewith
A process that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a titanium...
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6841505 |
Titanium-zirconium catalyst compositions and use thereof
A catalyst composition prepared from (a) titanium tetrahydrocarbyloxide, (b) zirconium tetrahydrocarbyloxide, and (c) tetraalkyl ammonium hydroxide, wherein the molar ratio of Zr:Ti is from about...
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6828410 |
Method for preparing poly(cyclohexane-1,4-dicarboxylate)s from cyclohexane-1,4-dicarboxylic acid, and composition
Poly(1,4-cyclohexanedicarboxylate)s, especially poly(1,4-cyclohexanedimethylene-1,4-cyclohexanedicarboxylate
), are prepared from at least one relatively non-volatile diol, such as...
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6800718 |
Process for producing polytrimethylene terephthalate (PTT)
Process of producing polytrimethylene terephthalate (PTT) by esterification of terephthalic acid (TPA) with trimethylene glycol (TMG) in the presence of a catalytic, titanium compound,...
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6787632 |
Organo-titanate catalysts for preparing pure macrocyclic oligoesters
Organo-titanate catalysts are prepared that are useful to catalyze depolymerization of a polyester to produce macrocyclic oligoesters substantially free from macrocyclic co-oligoesters.
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6787630 |
Process for the preparation of heat-stable, antimony-free polyesters of neutral color and the products which can be prepared by this process
Process for the preparation of heat-stable, antimony-free polyesters of neutral color and the products which can be prepared by this process A process for the preparation of heat-stable,...
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6783827 |
Method or decreasing the cyclic oligomer content in polyester product
The present invention relates to a method for decreasing the cyclic oligomer content level in the manufacturing process of polyethylene terephthalate (PET) and in the PET products produced from...
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