Polyester composition with modifier hydroxyl compound
US8039578B2 · kind B2 · utility
0Cited by
23References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2010 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Oct 21, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing non-solid-stated polyester polymer particles having one or more properties similar to polyester polymer particles that have undergone solid-state processing. In one embodiment, the process comprises (a) forming polyester polymer particles from a polyester polymer melt; (b) quenching at least a portion of the particles, (c) drying at least a portion of the particles, (d) crystallizing at least a portion of the particles, (e) annealing at least a portion of the particles. At all points during and between steps (b) through (e), the average bulk temperature of the particles is maintained above 165° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.