Polycarbonate resin, production method for same, and molded article comprising same

Patent metadata

Field	Value
Publication number	US-9394403-B2
Application number	US-201314647640-A
Country	US
Kind code	B2
Filing date	Jan 30, 2013
Priority date	Dec 11, 2012
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

The polycarbonate resin of the present invention comprises: a repeating unit represented by formula 1 of claim 1 ; and a repeating unit represented by formula 2 of claim 1 . The polycarbonate resin has excellent scratch resistance, transparency and tensile elongation.

First claim

The invention claimed is:

1. A polycarbonate resin comprising a repeat unit represented by Formula 1; and a repeat unit represented by Formula 2:

wherein in Formula 2, Q is a substituted or unsubstituted C5 to C10 cyclic alkylene group, and a and b are each independently an integer from 0 to 4.

2. The polycarbonate resin according to claim 1 , wherein the repeat unit represented by Formula 1 is present in an amount of about 5 mol % to about 95 mol %, and the repeat unit represented by Formula 2 is present in an amount of about 5 mol % to about 95 mol %.

3. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin further comprises a repeat unit represented by Formula 3:

wherein in Formula 3, A is a single bond, a substituted or unsubstituted C1 to C30 hydrocarbon group, an O or S-containing C1 to C30 hydrocarbon group, a halogen acid ester group, a carbonic acid ester group, CO, S or SO 2 ; R 1 and R 2 are each independently a substituted or unsubstituted C1 to C6 alkyl group; and m and n are each independently an integer from 0 to 4.

4. The polycarbonate resin according to claim 3 , wherein the repeat unit represented by Formula 3 is present in an amount of about 0.01 to about 250 parts by mole based on 100 parts by mole of the repeat units represented by Formulae 1 and 2.

5. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin has a scratch width of about 310 μm or shorter, as measured by a ball-type scratch profile (BSP) test.

6. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin has a tensile elongation of about 40% to about 100% at 25° C.

7. The polycarbonate resin according to claim 1 , wherein the polycarbonate resin has a pencil hardness of F or higher.

8. A method of preparing a polycarbonate resin comprising:
reacting a carbonate precursor with a diol mixture containing a diol represented by Formula 4 and a diol represented by Formula 5:

wherein in Formula 5, Q is a substituted or unsubstituted C5 to C10 cyclic alkylene group, and a and b are each independently an integer from 0 to 4.

9. The method of preparing a polycarbonate resin according to claim 8 , wherein the diol represented by Formula 4 is present in an amount of about 5 mol % to about 95 mol % in the entire diol mixture, and the diol represented by Formula 5 is present in an amount of about 5 mol % to about 95 mol % in the entire diol mixture.

10. The method of preparing a polycarbonate resin according to claim 8 , wherein the diol mixture further comprises an aromatic dihydroxy compound represented by Formula 6:

wherein in Formula 6, A is a single bond, a substituted or unsubstituted C1 to C30 hydrocarbon group, an O or S-containing C1 to C30 hydrocarbon group, a halogen acid ester group, a carbonic acid ester group, CO, S or SO 2 ; R 1 and R 2 are each independently a substituted or unsubstituted C1 to C6 alkyl group; and m and n are each independently an integer from 0 to 4.

11. The method of preparing a polycarbonate resin according to claim 10 , wherein the aromatic dihydroxy compound represented by Formula 6 is present in an amount of about 0.01 to about 250 parts by mole based on 100 parts by mole of the diols represented by Formulae 4 and 5.

12. A molded article comprising the polycarbonate resin according to claim 1 .

Assignees

• Cheil Ind Inc

Inventors

• Hur Jong Chan
• Kwon O Sung
• Yang Il Hwan
• Lee Dong Geun
• Jang Bok Nam
• Chi Jun Ho
• Chei Woo Suk

Classifications

• C08G64/02

  Aliphatic polycarbonates · CPC title

• C08G64/04

  Aromatic polycarbonates · CPC title

• C08L69/00

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08G64/1608 Primary

  saturated · CPC title

• C08G64/20

  General preparatory processes · CPC title