Composition and process for preparing high molecular weight polyester
US6239200A · kind A · utility
11Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2000 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Mar 14, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition suitable for use as a starting material for preparing a high molecular weight polyester through melt polymerization and solid state polymerization is disclosed. The composition comprises (a) a dicarboxylic acid or diester; (b) a glycol; (c) 0.1-5 mol %, relative to said component (a), of a multifunctional acid and/or a multifunctional alcohol; and (d) 0.05-5 wt %, based on the weight of the polyester, of a hindered phenolic aromatic phosphate. A process for preparing a high molecular weight polyester utilizing the above composition is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.