Copolycarbonate resin and article including the same

Patent metadata

Field	Value
Publication number	US-9255179-B2
Application number	US-201414654336-A
Country	US
Kind code	B2
Filing date	Sep 16, 2014
Priority date	Sep 17, 2013
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

According to the present disclosure, a copolycarbonate being economically prepared, and having improved low-temperature impact strength with improved transparency and flowability which are conflicting properties with each other, simultaneously, and a molded article including the same, may be provided.

First claim

The invention claimed is:

1. A copolycarbonate resin polymerized with an aromatic diol compound, a carbonate precursor and a siloxane compound, wherein the siloxane compound is a mixture of a compound represented by following Chemical Formula 1 and a compound represented by following Chemical Formula 2:

wherein R is independently hydrogen or an alkyl group having 1 to 13 carbon atoms; Ra is an alkylene group having 1 to 10 carbon atoms; Y is an alkyl group having 1 to 6 carbon atoms, hydrogen (H), halogen, a hydroxy group, an alkoxy group or an aryl group having 6 carbon atoms or more; -Q is —OH, —OR′″ or

n is an integer of 1 to 99; and R′″ is an alkyl group having 1 to 12 carbon atoms;

wherein R′ is independently hydrogen or an alkyl group having 1 to 13 carbon atoms; R″ is an alkylene group having 1 to 10 carbon atoms; X is an alkylene group having 1 to 6 carbon atoms, hydrogen (H), halogen, a hydroxy group, an alkoxy group or an aryl group having 6 carbon atoms or more; -Q′ is —OH, —OR′″ or

m is an integer of 1 to 99; and R′″ is an alkyl group having 1 to 12 carbon atoms.

2. The copolycarbonate resin of claim 1 , wherein a weight ratio between the compound represented by Chemical Formula 1 and the compound represented by Chemical Formula 2 is 0.1:99.9 to 99.9:0.1.

3. The copolycarbonate resin of claim 1 , wherein the siloxane compound is included in 0.1 to 10% by weight.

4. The copolycarbonate resin of claim 1 , wherein the aromatic diol compound is one or more selected from the group consisting of bis(4-hydroxyphenyl)methane, bis(4-hydroxyphenyl)ether, bis(4-hydroxyphenyl)sulfone, bis(4-hydroxyphenyl)sulfoxide, bis(4-hydroxyphenyl)sulphide, bis(4-hydroxyphenyl)ketone, 1,1-bis(4-hydroxyphenyl)ethane, 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), 2,2-bis(4-hydroxyphenyl)butane, 1,1-bis(4-hydroxyphenyl)cyclohexane (bisphenol Z), 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 2,2-bis(4-hydroxy-3,5-dichlororophenyl)propane, 2,2-bis(4-hydroxy-3-bromophenyl)propane, 2,2-bis(4-hydroxy-3-chlorophenyl)propane, 2,2-bis(4-hydroxy-3-methylphenyl)propane, 2,2-bis(4-hydroxy-3,5-dimethylphenyl)propane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, bis(4-hydroxyphenyl)diphenylmethane and α,ω-bis[3-(o-hydroxyphenyl)propyl]polydimethylsilioxane.

5. The copolycarbonate resin of claim 1 , wherein the carbonate precursor is a compound represented by Chemical Formula 3:

wherein X 1 and X 2 are independently halogen, a haloalkyl group, a halocycloalkyl group, a haloaryl group, an alkoxy group or a haloalkoxy group.

6. The copolycarbonate resin of claim 1 , wherein the compound represented by Chemical Formula 2 is a compound represented by following Chemical Formula 5:

wherein R′ is independently hydrogen or an alkyl group having 1 to 13 carbon atoms; and m is an integer of 1 to 99.

7. The copolycarbonate resin of claim 1 , wherein the copolycarbonate resin is polymerized by further comprising a molecular weight controller.

8. The copolycarbonate resin of claim 7 , wherein the molecular weight controller is mono-alkylphenol.

9. The copolycarbonate resin of claim 7 , wherein the molecular weight controller is included in 0.1 to 10 parts by weight, based on 100 parts by weight of the aromatic diol compound.

10. The copolycarbonate resin of claim 1 , wherein the copolycarbonate resin has a weight average molecular weight of 30000 to 60000 g/mol.

11. A molded article comprising the copolycarbonate resin of claim 1 .

12. The molded article of claim 11 , wherein the molded article is an injection molded article.

13. A method of preparing a copolycarbonate resin by interfacial polymerization of an aromatic diol compound, a carbonate precursor and a siloxane compound, wherein the siloxane compound is a mixture of a compound represented by following Chemical Formula 1 and a compound represented by following Chemical Formula 2:

wherein R is independently hydrogen or an alkyl group having 1 to 13 carbon atoms; Ra is an alkylene group having 1 to 10 carbon atoms; Y is an alkyl group having 1 to 6 carbon atoms, hydrogen (H), halogen, a hydroxy group, an alkoxy group or an aryl group having 6 carbon atoms or more; -Q is —OH, —OR′″ or

n is an integer of 1 to 99; and R′″ is an alkyl group having 1 to 12 carbon atoms;

wherein R′ is independently hydrogen or an alkyl group having 1 to 13 carbon atoms; R″ is an alkylene group having 1 to 10 carbon atoms; X is an alkylene group having 1 to 6 carbon atoms, hydrogen (H), halogen, a hydroxy group, an alkoxy group or an aryl group having 6 carbon atoms or more; -Q′ is —OH, —OR″″ or

m is an integer of 1 to 99; and R″″ is an alkyl group having 1 to 12 carbon atoms.

14. The method of claim 13 , wherein a molecular weight controller is added before, during or after polymerization initiation.

15. The method of claim 13 , wherein the interfacial polymerization is carried out by further including one or more of an acid binder, an organic solvent and a reaction promoter.

Assignees

• Lg Chemical Ltd

Inventors

• Park Jung Jun
• Kim Min Jeong
• Ko Un
• Lee Ki Jae
• Hong Moo Ho
• Bahn Hyong Min
• Chun Byoung Kyu
• Hwang Young Young

Classifications

• C08G64/307

  and phenols · CPC title

• C08L83/10

  Block- or graft-copolymers containing polysiloxane sequences (obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C08L51/08, C08L53/00) · CPC title

• C08G77/448

  containing polycarbonate sequences · CPC title

• C08L2201/10

  Transparent films; Clear coatings; Transparent materials · CPC title

• C08G64/1666 Primary

  containing silicon · CPC title