Polycarbonate resin composition and formed product thereof
AssigneeMitsubishi Engineering-Plastics Corporation
InventorToshiki Monden
Life of this patent
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Abstract
In a polycarbonate resin composition containing a polycarbonate resin and a polycarbosilane compound, the use of the polycarbosilane compound modifies the surface properties of the polycarbonate resin composition without adversely affecting the intrinsic characteristics of the polycarbonate resin, such as transparency, heat resistance, and mechanical properties, e.g., impact resistance. A polycarbonate resin composition containing 100 parts by mass of a polycarbonate resin, 0.001 to 1 part by mass of a metal salt compound, and 0.005 to 5 parts by mass of a polycarbosilane compound has significantly improved flame resistance and high transparency and causes markedly reduced outgassing and mold fouling, without losing impact resistance and heat resistance.
Claims11
A polycarbonate resin composition, comprising:
- 100 parts by mass of a polycarbonate resin;
- 0.001 to 1 part by mass of a metal salt compound;
- and
- 0.005 to 5 parts by mass of a polycarbosilane compound,
- wherein the polycarbosilane compound has a number-average molecular weight of 100 to 20,000 and a repeating unit of formula (4):
- wherein R1 and R2 each independently represent a monovalent hydrocarbon group, a hydrogen atom, or a silyl group,
- A1 represents a divalent hydrocarbon group having 1 to 12 carbon atoms,
- a and b each independently represent 0 or 1,
- p and q each independently represent an integer of 1 to 8, and
- R1s, R2s, and A1s in all the repeating units are each the same or different.
Dependencies are inferred from the claim text.