Polycarbonate compositions, methods of manufacture, and methods of use

US11332613B2 · kind B2 · utility

Assignee

• SHPP Global Technologies B.V. · NL

Inventors

• Xing Liu · Bergen op Zoom, NL
• Wei Shan · Shanghai, CN
• Yaming Niu · Shanghai, CN
• Ying Na · Shanghai, CN
• Hongmei Zhou · Shanghai, CN
• Rahul Patil · Pune, IN
• Yusuf Sulub · Mishawaka, US
• Pooja Bajaj · Schenectady, US
• Wei Zhao · East Setauket, US
• Peter Vollenberg · Evansville, US

Key dates

• Filing date: Aug 16, 2018
• Grant date: May 17, 2022
• Expiry date: Nov 27, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2207/53
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polycarbonate composition includes: a continuous polycarbonate phase; discontinuous first domains distributed in the continuous phase, and comprising a core-shell silicone-(meth)acrylate impact modifier comprising a silicone elastomer core and a (meth)acrylate copolymer shell, wherein the first domains have an aspect ratio of at least 1.7, preferably at least 1.8; and discontinuous second domains distributed in the continuous phase, and comprising an alkenyl aromatic-olefin block copolymer impact modifier, wherein the second domains have an aspect ratio of at least 3, preferably at least 4, and a domain size of 6400 square nanometers or less, more preferably 5700 square nanometers or less. Optionally, the polycarbonate composition includes: a polycarbonate; a brominated polycarbonate different from the polycarbonate; a poly(carbonate-siloxane) comprising 30 to 70 weight percent of siloxane blocks; a core-shell silicone-(meth)acrylate impact modifier comprising a silicone elastomer core and an (meth)acrylate copolymer shell; and an alkenyl aromatic-olefin block copolymer impact modifier.