Patent · US Active

Polysiloxane-polycarbonate compositions, and related methods and articles

US7994254B2 · kind B2 · utility

2Cited by

23References

19Claims

0Family size

Assignee

Sabic Innovative Plastics B.V. · NL

Inventors

Veeraraghavan Srinivasan · Bengaluru, IN
Roopali Rai · Savanuru, IN
Dibakar Dhara · Bengaluru, IN
Sriramakrishna Maruvada · Evansville, US
Purushotham Adoni · Savanuru, IN

Key dates

Filing date	Jun 20, 2008
Grant date	Aug 9, 2011
Priority date	—
Expiry date	Jul 26, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L83/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A composition, comprising, based on the total weight of the polymer components in the composition, 1 to 40 wt. % of an aromatic polycarbonate, 30 to 98.8 wt. % of a polysiloxane-polycarbonate block copolymer, and 0.1 to 10 wt. % of a polysiloxane-polyimide block copolymer comprising more than 20 wt. % polysiloxane blocks, based on the total weight of the polysiloxane-polyimide copolymer. The compositions provide articles with low haze, high luminous transmittance, and good hydro-aging properties. The articles can further be formulated to have excellent flame retardance, particularly when KSS is used.

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