Flame retardant copolyester compositions
US10711133B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2015 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Mar 21, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2385/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to the combination of halogen-free flame retardant additives in a copolyester to improve the flame retardant properties of the copolyester composition while retaining clarity and impact properties, methods of making the copolyester composition and articles made from the copolyester composition. More specifically, the present invention relates to the use of a polymeric sulfonyl and phosphonate containing flame retardant compound in copolyester compositions to improve the flame retardant properties while retaining clarity, glass transition temperature, impact properties, methods of making said copolyester compositions and articles therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.