Thermoplastic polyester molding compositions
US4420581A · kind A · utility
58Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1981 |
| Grant date | Dec 13, 1983 |
| Priority date | — |
| Expiry date | Jan 28, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention concerns thermoplastic polyester molding compositions containing iron oxides, particularly Fe.sub.2 O.sub.3 which compositions exhibit markedly reduced heat up times and are especially useful in molding operations such as blow molding of beverage bottles. The polyester polymer may have incorporated therein by copolymerization certain anthraquinone dyes having functional groups which condense during polymerization into the polyester chain. The dye moieties are thermally stable at the polymer processing temperatures and are colorfast and non-extractable from the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.