Injection moldable poly(ethylene terephthalate)
US4403052A · kind A · utility
5Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1982 |
| Grant date | Sep 6, 1983 |
| Priority date | — |
| Expiry date | Aug 30, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flame retarded, injection moldable, saturated, linear polyester composition contains red phosphorus as flame retardant and a metal iodide as phosphine suppressing agent. The metal is one of the groups 1a and 2b of the periodic table of elements with potassium iodide being the most preferred. The phosphine evolution of a poly(ethylene terephthalate) molding composition containing 4% red phosphorus as flame retardant is reduced to 0.3 ppm at the die and to 1.0 ppm in storage by the addition of 0.6% of potassium iodide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.