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Inventor:
Gyobu; Shoichi
Address:
Ohtsu, JP
No. of patents:
7
Patents:












Patent Number Title Of Patent Date Issued
8293862 Polyester polymerization catalyst, polyester produced by using the same, and a process for produ October 23, 2012
The present invention provides processes for producing polyester. In one of the embodiments, the invention provides a process for producing polyester, comprising adding a catalyst in a polycondensation reaction, esterification reaction or transesterification reaction between componen
7501373 Polymerization catalyst for polyester production, polyester, and process for producing polyester March 10, 2009
Embodiments of the present invention are directed to a polymerization catalyst used to produce polyester. The catalyst comprises at least one metal-containing component, excluding antimony or germanium, and an organic compound component, containing at least one moiety of Ar--O-- or A
7208565 Polymerization catalyst for polyesters, polyester produced with the same, and process for produc April 24, 2007
This invention provides a novel polycondensation catalyst using no antimony compound, polyester produced by using the same, and a process for producing polyester. A novel catalyst comprising an aluminum compound and a phosphorus compound is used as the polycondensation catalyst in pr
7199212 Polymerization catalyst for polyesters, polyesters produced with the same and process for produc April 3, 2007
A novel polymerization catalyst for polyesters, which does not contain any germanium or antimony compound as the main component; polyesters produced with the catalyst; and a process for producing polyesters. This polymerization catalyst is excellent in catalytic activity, little causes
7144614 Polyester polymerization catalyst, polyester produced by using the same, and process for produci December 5, 2006
This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of this invention is a polyester polymerization catalyst comprising an aluminum compound an
7132383 Polymerization catalyst for polyester, polyester produced with the same, and process for produci November 7, 2006
A polymerization catalyst for polyester production which contains neither a germanium compound nor an antimony compound as a major component. It contains aluminum as the main metallic ingredient, has excellent catalytic activity, and gives a polyester which is effectively inhibited f
6245880 Organophosphorous composition, method of producing organophosphorous compound, polyester composi June 12, 2001
A polyester having a good color tone can be obtained by using, as an ester-forming component, a compound derived from an organophosphorous composition comprising an organophosphorous compound represented by the general formula (1): ##STR1##wherein R.sup.1 and R.sup.2 represent an org










 
 
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