Methods for making polyester bottle resins having reduced frictional properties
US6710158B2 · kind B2 · utility
33Cited by
123References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Jun 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is a polyester resin that includes between about 20 and 200 ppm of an inert particulate additive, preferably selected from the group consisting of surface-modified talc and surface-modified calcium carbonate. The invention is also a method of making the polyester resin, which is capable of being formed into low-haze, high-clarity bottles possessing reduced coefficient of friction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.