Molding composition suitable for forming improved flame retardant three-dimensional shaped articles
US4024102A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1974 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Feb 13, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved flame retardant molding composition of polypropylene terephthalate or polybutylene terephthalate is provided. The composition includes in intimate admixture with the non-halogenated polypropylene terephthalate or polybutylene terephthalate an oxide of antimony, a reinforcing agent (e.g. a glass fiber reinforcing agent), and a polyalkylene-2,5-dibromoterephthalate. Unlike the flame retardant molding compositions of the prior art, the components of the same tend to be non-exuding during utilization of the resulting three-dimensional shaped article at elevated temperatures (e.g. after 66 hours at 175.degree. C.) and thereby render the same suitable for attractive utilization in an even wider range of applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.