Catalyst for polyester polycondensation and method for...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

Reexamination Certificate

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Details

C502S150000, C502S155000, C502S156000, C502S183000, C502S242000, C502S249000, C528S279000, C528S287000

Reexamination Certificate

active

08039416

ABSTRACT:
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 long-term storage stability, can be easily produced industrially, and has an advantage in cost; a polyester resin obtained with the catalyst; and a molded article. These are: a polymerization catalyst for polyester production containing titanium atoms, alkaline earth metal atoms and phosphorus atoms and having a specific constitution; a polyester resin obtained with the catalyst; and a molded article.

REFERENCES:
patent: 2004-124028 (2004-04-01), None
patent: 2004 217750 (2004-08-01), None
patent: 2004 224858 (2004-08-01), None
patent: 354305 (1999-03-01), None
translation of JP 2004-224858.
Office Action issued Sep. 7, 2010, in Japanese Patent Application No. JP 2005-014379 (with English translation).
Chinese Office Action, Issued on Apr. 22, 2011, with English Translation.
Office Action issued Apr. 22, 2011 in China Application No. 200680002833.5 (With English Translation).
Taiwanese Office Action dated Jun. 27, 2011 issued in corresponding TW Application No. 095102221, filed Jan. 20, 2006 w/English translation.
Japanese Office Action dated Jul. 12, 2011, issued in corresponding Japanese Application No. 2005-318546, filed Nov. 1, 2005, (w/English translation) (references discussed therein already cited to the Office on Jul. 20, 2007).

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