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US20090281230 |
Branched low profile additives and methods of production
The invention pertains to low profile additives (“LPA”) comprising branched polymers having a weight average molecular weight (Mw) of at least about 20,000 grams/mole and a number average...
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US20090280279 |
Polyethylene terephthalate resin synthesized from inorganic Ti-Mg catalyst and its applications thereof
PET resins containing a small amount of a blue dye and/or further containing inorganic particles of Fe 3 O 4 or BaSO 4 are synthesized in the presence of an inorganic Ti—Mg catalyst employed as...
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US20090215933 |
Alicyclic Polyester and Process for Producing the Same, and Resin Composition Using the Same
An alicyclic polyester which is suitable for use as an optical material, low in coloration, satisfactory in thermal stability and hydrolytic stability, and reduced in foreign-matter content; and a...
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US20090137769 |
MANUFACTURING METHOD OF POLYETHYLENE TEREPHTHALATE
A problem of the invention is to provide polyethylene terephthalate, a molded article of which has low acetaldehyde content and oligomer content. The problem of the invention can be solved by a...
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US20090131627 |
POLYESTER POLYMER PARTICLES HAVING A SMALL SURFACE TO CENTER MOLECULAR WEIGHT GRADIENT
There is now provided a polyester polymer particle having an It.V., a surface, and a center, wherein the It.V. at the surface of the particle is less than 0.25 dL/g higher than the It.V. at the...
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US20090131625 |
Processes for making elastomeric polyester esters from post-consumer polyester
Processes for making elastomeric polyether esters from polyesters and polyols are provided. The processes can offer a reduction in manufacturing cost, energy use and a lower environmental footprint...
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US20090076242 |
CATALYST FOR POLYESTER POLYCONDENSATION AND METHOD FOR PRODUCING POLYESTER RESIN USING THE SAME
The invention provides: a polycondensation catalyst for polyester production, which contains titanium atoms, alkaline earth metal atoms and phosphorus atoms, has high reactivity and excellent...
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US20090069530 |
POLYESTER FOR TONER
A polyester for a toner, obtainable by polycondensing an alcohol component and a carboxylic acid component containing a (meth)acrylic acid-modified rosin; and a toner containing the polyester for a...
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US20090069529 |
Titanium oxide sol and process for producing polyalkylene terephthalate therewith
An object of the present invention is to provide an environmentally friendly polymerization catalyst of polyalkylene terephthalate which does not use a heavy metal such as antimony. Another object...
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US20090036635 |
PROMOTER FOR POLYCONDENSATION REACTION
A promoter for a polycondensation reaction used together with a catalyst in a polycondensation reaction, the promoter for a polycondensation reaction comprising a pyrogallol compound having a...
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US20090011236 |
Process for Continuous Production of Polyester, Polyester Prepolymer Granule and Polyester
A problem of the invention is to provide a process for producing a polyester with high molecular weight and high quality and having practicality as a container material, etc., which is able to...
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US20090005531 |
Solid state polymerization process for polyester
Disclosed is a method for increasing the solid state polymerization (SSP) rates of organic titanate catalyzed polyester. The method comprises in a first step, reacting a dicarboxylic acid or a C 1...
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US20080300379 |
POLYCARBONATE-POLYESTER BLOCK COPOLYMER COMPOSITIONS, METHODS, AND ARTICLES
A polycarbonate-polyester block copolymer includes a polycarbonate block and a polyester block, each having specific structures. The block copolymer can be prepared, at least in part, from...
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US20080293912 |
High molecular weight polyester polymers with reduced acetaldehyde
Polyester compositions, especially polyethylene terephthalate homopolymer and copolymers, are disclosed containing titanium catalysts and catalyst deactivator added late in the manufacturing...
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US20080188602 |
Polyester polymers with low acetaldehyde generation rates and high vinyl ends concentration
A polyester polymer comprising alkylene arylate units, said polymer having an It.V. of at least 0.72 dl/g, a vinyl ends concentration of at least 0.8 microequivalents per gram, an AA generation...
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US20080132672 |
Composition comprising titanium and clay and process therewith
A composition and a process for producing an ester or polyester are provided. The composition comprises a titanium compound and clay or a dispersion of clay. The process comprises contacting a...
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US20080108780 |
POLYMERIZATION CATALYST FOR POLYESTER, METHOD FOR PRODUCING IT AND PROCESS FOR PRODUCING POLYESTER USING IT
A polymerization catalyst for a polyester, characterized in that it comprises components having at least the following metal element (1) and the following metal element (2), their contents satisfy...
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US20080064797 |
Process For The Production Of Polyethylene Terephthalate Copolyester, Copolyester Obtained Thereby And Its Use And Catalyst Useful In The Process
The present invention relates to a process for the production of polyethylene terephthalate copolyester from terephthalic acid, isophthalic acid and ethylene glycol, comprising the steps of: a)...
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