Catalyst for production of polyester, process for producing polyester using it and titanium-containing polyethylene terephthalate
US7323537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2005 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Dec 2, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/83
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
To provide a catalyst for production of a polyester, a process for producing a polyester using the catalyst and a titanium-containing polyethylene terephthalate having excellent characteristics.A catalyst for production of a polyester, characterized by comprising at least (1) a Group 4A compound (hereinafter referred to as compound (1)), (2) a compound of at least one element selected from the group consisting of magnesium, calcium and zinc (hereinafter referred to as compound (2)) and an oxygen-containing organic solvent. A process for producing a polyester using this catalyst. A titanium-containing polyethylene terephthalate, having characteristics represented by the following (A), (B) and (C):
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.