Polycarbonate compositions
AssigneeCovestro Deutschland AG
InventorsJianfeng Gu, Xiaoxiang Wang
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Abstract
The present invention relates to polycarbonate compositions and molded articles made therefrom. The polycarbonate composition comprises: A) 70-95 wt. % of aromatic polycarbonate, B) 4-26 wt. % of mineral fdler, C) 0.1-4 wt. % of ester-modified wax, D) 0.1-0.6 wt. % of a mold release agent, E) 0.05-0.3 wt. % of antioxidant, F) 0-0.3 wt. % of neutralizer, and G) 0-2 wt. % of coloring agent, wherein the amount of each component is based on the total weight of the polycarbonate composition. The molded articles made from the polycarbonate composition according to this invention show enhanced impact strength, tensile elongation at break and surface gloss.
Claims12
A polycarbonate composition comprising the following components:
- A) 70-95 wt. % of aromatic polycarbonate,
- B) 4-26 wt. % of a mineral filler selected from the group consisting of kaolin, talc, mica, wollastonite, fused silica, and combinations thereof,
- C) 0.1-4 wt. % of ester-modified wax,
- D) 0.1-0.6 wt. % of mold release agent,
- E) 0.05-0.3 wt. % of antioxidant,
- F) 0-0.3 wt. % of neutralizer, and
- G) 0-2 wt. % of coloring agent,
- wherein the amount of each component is based on the total weight of the polycarbonate composition, and the ester-modified wax has the following formula (W1):
- wherein
- R is hydrogen or a C1- to C5-alkyl group,
- n represents an integer of 20 to 40,
- m represents an integer of 1 to 5, and
- X and Y, independently of one another, represent an integer of 3 to 1000.
The polycarbonate composition consisting of
- A) 70-95 wt. % of aromatic polycarbonate,
- B) 4-26 wt. % of mineral filler,
- C) 0.1-4 wt. % of ester-modified wax,
- D) 0.1-0.6 wt. % of mold release agent, and
- E) 0.05-0.3 wt. % of antioxidant,
- F) 0-0.3 wt. % of neutralizer, and
- G) 0-2 wt. % of coloring agent,
- wherein the amount of each component is based on the total weight of the polycarbonate composition, and the ester-modified wax has the following formula (W1):
- wherein
- R is hydrogen or a C1- to C5-alkyl group,
- n represents an integer of 20 to 40,
- m represents an integer of 1 to 5, and
- X and Y, independently of one another, represent an integer of 3 to 1000.
Dependencies are inferred from the claim text.