Patent · US Active

Flame retardant polycarbonates having high total luminous transmittance

US10563043B2 · kind B2 · utility

0Cited by

25References

20Claims

0Family size

Assignee

TRINSEO EUROPE GMBH · CH

Inventors

Claude T. E. Van Nuffel · Oostakker, BE
Hung Chang Wu · Taoyuan, TW

Key dates

Filing date	Mar 14, 2017
Grant date	Feb 18, 2020
Priority date	—
Expiry date	Mar 14, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2201/003
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polycarbonate compositions having good flame retardancy and high light transmittance are achieved using the combination of a polycarbonate, a charring salt flame retardant, and a low molecular weight silicone compound. Light diffusing compositions are achieved using a particulate light diffusing agent. The compositions preferably meet or exceed one or more (and most preferably all) of the following flame retardancy standards: (i) UL-94 V-0 (t=1 mm); (ii) UL-94 5VA (t=2.5 mm); (iii) UL-94 5VB (t=2.5 mm).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.