Process to prepare a polyester resin
US6113997A · kind A · utility
54Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1999 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is disclosed to prepare a polyester resin having a predetermined acetaldehyde (AA) content whereby the IV of the melt phase resin is constrained to a certain range resulting in a longer SSP time to achieve a higher level of IV for the resin with an AA content of 1 PPM or less. The resultant resin can be transformed into a bottle preform, which, when blown, forms a bottle suitable for packaging of mineral water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.