Polycarbonate-siloxane copolymer compositions with improved appearance properties

US9169390B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Jian Yang · State College, US
• Ding Yu · Zhejiang, CN
• Shamsul Hairi Salleh · Tochigi, JP
• Robert Dirk van de Grampel · Bergen op Zoom, NL
• Mark Adrianus Johannes van der Mee · Breda, NL

Key dates

• Filing date: May 30, 2014
• Grant date: Oct 27, 2015
• Expiry date: May 30, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/2241
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed herein are methods and compositions polycarbonate blend compositions with improved appearance characteristics and impact characteristics. The resulting compositions, comprising a polycarbonate polymer, a first polysiloxane-polycarbonate copolymer, a second polysiloxane-polycarbonate copolymer, and optionally a color composition, can be used in the manufacture of articles while still retaining advantageous mechanical properties, melt flow properties, and appearance characteristics such as the ability to achieve deep black and bright white colors. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.