Polycarbonate and method of preparing the same

Patent metadata

Field	Value
Publication number	US-9765184-B2
Application number	US-201114345459-A
Country	US
Kind code	B2
Filing date	Dec 13, 2011
Priority date	Sep 21, 2011
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A polycarbonate resin of the present invention is characterized by comprising repeating units represented by Formula 1, Formula 2, Formula 3 and Formula 4, respectively.

First claim

The invention claimed is:

1. A polycarbonate comprising repeating units represented by Formula 1, Formula 2, Formula 3 and Formula 4, respectively:

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, and a and b are each independently an integer from 0 to 4;

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, and a and b are each independently an integer from 0 to 4;

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, R 3 is substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C6 to C12 aryl group, substituted or unsubstituted C7 to C20 aralkyl group, a and b are each independently an integer from 0 to 4, and n is 0 or 1; and

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, R 3 is substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C6 to C12 aryl group, substituted or unsubstituted C7 to C20 aralkyl group, a and b are each independently an integer from 0 to 4, and n is 0 or 1.

2. A polycarbonate containing about 1˜50 mol % of repeating units of Formula 4 based on the whole repeating units, and having a glass transition temperature of about 130 to about 190° C., a flame retardancy of V-0, as measured on a 3.2 mm thick specimen according to the UL-94, a notched IZOD impact strength of about 25 to about 120 kg·cm/cm, as measured on a ⅛″ thick specimen at room temperature according to ASTM D256, and a transmittance difference (ΔT) of about 12% or less, as calculated by the following Equation 1:

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom; R 3 is substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C6 to C12 aryl group, substituted or unsubstituted C7 to C20 aralkyl group, a and b are each independently an integer from 0 to 4, and n is 0 or 1,

Δ
⁢

⁢
T

=

T
0

-

T
1

T
0

×
100

[

Equation
⁢

⁢
1

]

wherein, T 0 is initial visible light transmittance of a 2.5 mm thick sample, and T 1 is visible light transmittance of the sample obtained by immersing the sample in a solution consisting of methyl isobutyl ketone, cyclohexanone and 2-ethoxy ethanol for 2 minutes and then drying the sample at 80° C. for 30 minutes.

3. The polycarbonate as claimed in claim 1 , wherein the polycarbonate comprises repeating units of Formula 1 (M1), Formula 2 (M2), Formula 3 (M3) and Formula 4 (M4) in mole ratio of M1:M2:M3:M4=about 20˜90 mol %:about 5˜50 mol %:about 1˜50 mol %:about 1˜50 mol %:

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, and a and b are each independently an integer from 0 to 4;

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, and a and b are each independently an integer from 0 to 4;

wherein, R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, R 3 is substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C6 to C12 aryl group, substituted or unsubstituted C7 to C20 aralkyl group, a and b are each independently an integer from 0 to 4, and n is 0 or 1; and

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, R 3 is substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C6 to C12 aryl group, substituted or unsubstituted C7 to C20 aralkyl group, a and b are each independently an integer from 0 to 4, and n is 0 or 1.

4. A method of preparing polycarbonate, comprising transesterifying diols comprising Formula 1-1 and Formula 2-1 with carbonate ester and phosphate ester:

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl group or halogen atom, and a and b are each independently an integer from 0 to 4; and

wherein R 1 and R 2 are each independently substituted or unsubstituted C1 to C6 alkyl group, substituted or unsubstituted C3 to C6 cycloalkyl group, substituted or unsubstituted C6 to C12 aryl grou

Assignees

• Chi Jun Ho
• Kwon O Sung
• Hur Jong Chan
• Kwon Hyuck Man
• Jang Bok Nam
• Lotte Advanced Mat Co Ltd

Inventors

• Chi Jun Ho
• Kwon O Sung
• Hur Jong Chan
• Kwon Hyuck Man
• Jang Bok Nam

Classifications

• C08L69/00

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

• C08G64/083 Primary

  containing phosphorus · CPC title

• C08G64/02 Primary

  Aliphatic polycarbonates · CPC title

• C08G64/20

  General preparatory processes · CPC title

• C08G64/30

  using carbonates · CPC title