Polycarbonate composition and article comprising the same

Patent metadata

Field	Value
Publication number	US-9580597-B2
Application number	US-201515026905-A
Country	US
Kind code	B2
Filing date	Dec 4, 2015
Priority date	Dec 4, 2014
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

The present invention relates to a polycarbonate composition including a polycarbonate and an impact reinforcing agent, and an inorganic filler to improve a mechanical property thereof, and a copolycarbonate to solve a problem of appearance defect caused by including the inorganic filler.

First claim

The invention claimed is:

1. A polycarbonate composition comprising:
a polycarbonate,
an impact reinforcing agent,
a copolycarbonate comprising an aromatic polycarbonate-based first repeating unit;
and one or more aromatic polycarbonate-based second repeating units having siloxane bonds, and
an inorganic filler,
wherein the first repeating unit is represented by Chemical Formula 1 below, and
the second repeating unit comprises a repeating unit represented by Chemical Formula 2 below and a repeating unit represented by Chemical Formula 3 below:

in the Chemical Formula 1,
R 1 , R 2 , R 3 and R 4 are each independently hydrogen, C 1-10 alkyl, C 1-10 alkoxy, or halogen, and
Z is C 1-10 alkylene unsubstituted or substituted with phenyl, C 3-15 cycloalkylene unsubstituted or substituted with C 1-10 alkyl, O, S, SO, SO 2 , or CO,

in the Chemical Formula 2,
X 1 is each independently C 1-10 alkylene,
R 5 is each independently hydrogen; C 1-15 alkyl unsubstituted or substituted with oxiranyl, oxiranyl-substituted C 1-10 alkoxy, or C 6-20 aryl; halogen; C 1-10 alkoxy; allyl; C 1-10 haloalkyl; or C 6-20 aryl, and
n is an integer of 10 to 200,

in the Chemical Formula 3,
X 2 is each independently C 1-10 alkylene,
Y 1 is each independently hydrogen, C 1-6 alkyl, halogen, hydroxy, C 1-6 alkoxy, or C 6-20 aryl,
R 6 is each independently hydrogen; C 1-15 alkyl unsubstituted or substituted with oxiranyl, oxiranyl-substituted C 1-10 alkoxy, or C 6-20 aryl; halogen; C 1-10 alkoxy; allyl; C 1-10 haloalkyl; or C 6-20 aryl, and
m is an integer of 10 to 200.

2. The polycarbonate composition of claim 1 , wherein:
the polycarbonate composition comprises 1 to 13 parts by weight of the polycarbonate,
1 part by weight of the impact reinforcing agent,
1 to 6 parts by weight of the copolycarbonate, and
0.5 to 4 parts by weight of the inorganic filler.

3. The polycarbonate composition of claim 1 , wherein:
the polycarbonate comprises a repeating unit represented by Chemical Formula 4 below:

in the Chemical Formula 4,
R′ 1 , R′ 2 , R′ 3 and R′ 4 are each independently hydrogen, C 1-10 alkyl, C 1-10 alkoxy, or halogen, and
Z′ is C 1-10 alkylene unsubstituted or substituted with phenyl, C 3-15 cycloalkylene unsubstituted or substituted with C 1-10 alkyl, O, S, SO, SO 2 , or CO.

4. The polycarbonate composition of claim 1 , wherein:
the impact reinforcing agent is a methylmethacrylate-butadiene-styrene-based copolymer, a styrene-acrylonitrile-based copolymer, an acrylonitrile-butadiene-styrene-based copolymer, or mixtures thereof.

5. The polycarbonate composition of claim 1 , wherein:
the polycarbonate composition comprises 5 to 13 parts by weight of the polycarbonate.

6. The polycarbonate composition of claim 1 , wherein:
the polycarbonate has a weight average molecular weight of 1,000 to 100,000.

7. The polycarbonate composition of claim 1 , wherein:
the copolycarbonate has a weight average molecular weight of 1,000 to 100,000.

8. The polycarbonate composition of claim 1 , further comprising:
0.5 to 4 parts by weight of a flame retardant.

9. The polycarbonate composition of claim 8 , wherein:
the flame retardant is a phosphorus-based flame retardant.

10. The polycarbonate composition of claim 9 , wherein:
the phosphorus-based flame retardant is bisphenol-A bis(diphenyl phosphate).

11. The polycarbonate composition of claim 1 , wherein:
the inorganic filler is talc, wollastonite, mica, or mixtures thereof.

12. An article manufactured by the polycarbonate composition of claim 1 .

Assignees

• Lg Chemical Ltd

Inventors

• Jeong Yoon Seon
• Lee Moo Seok
• Lee Ryul
• Ahn Sung Tae
• Cho Ik Hwan

Classifications

• C09K21/08

  containing halogen · CPC title

• C08G77/38

  Polysiloxanes modified by chemical after-treatment · CPC title

• C08G64/24

  and phenols · CPC title

• C08K7/14

  Glass · CPC title

• C08L2205/06

  having improved processability or containing aids for moulding methods · CPC title