Aromatic polycarbonate resin composition

• US 7,189,796 B2
• Filed: 10/29/2003
• Issued: 03/13/2007
• Est. Priority Date: 11/01/2002
• Status: Expired due to Fees

• Current Assignee: Teijin Chemicals Ltd. (Teijin Limited)
• Original Assignee: Teijin Chemicals Ltd. (Teijin Limited)
• Inventors: Hironaka, Katsuhiko, Mitsunaga, Masaki
• Primary Examiner(s): BOYKIN, TERRESSA M
• Application Number:
  US10/531,914
• Publication Number:
  US 20050272903A1
• Time in Patent Office: 1,231 Days
• Field of Search: 264/176.1, 264/219, 257/E21.279, 528/196, 528/198
• US Class Current: 528/196
• CPC Class Codes: C08K 5/521 Esters of phosphoric acids, e.g. of H3PO4
• CPC Class Codes: C08K 9/04 Ingredients treated with organic substances treated with macromolecular compounds C08K9/08
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

An object of the present invention is to provide an aromatic polycarbonate resin composition having good rigidity and good hydrolysis resistance.

The present invention is an aromatic polycarbonate resin composition comprising:

• (A) 100 parts by weight of aromatic polycarbonate (component A)
• (B) 0.1 to 20 parts by weight of layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I):

(wherein M represents a nitrogen atom or a phosphorus atom, R¹ and R² represent an alkyl group having 6 to 16 carbon atoms and may be the same as or different from each other, and R³ and R⁴ represent an alkyl group having 1 to 4 carbon atoms and may be the same as or different from each other),

• (C) 0.1 to 50 parts by weight of compound (component C) having an affinity for the component A and having a hydrophilic component, and
• (D) 0.005 to 1 part by weight of ester (component D) of a higher fatty acid and a polyhydric alcohol.

Claims

1. An aromatic polycarbonate resin composition comprising:

(A) an aromatic polycarbonate (component A)

(B) a layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I);

2. The composition of claim 1, wherein R¹ and R² in the general formula (I) relating to the component B are an alkyl group having 8 to 11 carbon atoms.

3. The composition of claim 1, wherein R³ and R⁴ in the general formula (I) relating to the component B are a methyl group or an ethyl group.

4. The composition of claim 1, wherein M in the general formula (I) relating to the component B is a nitrogen atom.

5. The composition of claim 1, wherein the component C is a polymer having an affinity for the aromatic polycarbonate (component A) and having a functional group comprising a carboxyl group and/or a derivative thereof.

6. The composition of claim 5, wherein the component C is a styrene-containing polymer (component C-1) having a functional group comprising a carboxyl group and/or a derivative thereof.

7. The composition of claim 6, wherein the component C-1 is a styrene-maleic anhydride copolymer.

8. The composition of claim 1, wherein the higher fatty acid of the component D is an aliphatic carboxylic acid having 10 to 32 carbon atoms, and the polyhydric alcohol is an aliphatic alcohol having 3 to 32 carbon atoms.

9. The composition of claim 1, wherein the component D is a partial ester of a higher fatty acid and a polyhydric alcohol.

24. A molded article produced by injection-molding the aromatic polycarbonate resin composition of claim 1.

10. An aromatic polycarbonate resin composition comprising:

(A) an aromatic polycarbonate (component A)

(B) a layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I);

11. The composition of claim 10, wherein R¹ and R² in the general formula (I) relating to the component B are an alkyl group having 8 to 11 carbon atoms.

12. The composition of claim 10, wherein the component C is a polymer having an affinity for the aromatic polycarbonate (component A) and having a functional group comprising a carboxyl group and/or a derivative thereof.

13. The composition of claim 12, wherein the component C is a styrene-containing polymer (component C-1) having a functional group comprising a carboxyl group and/or a derivative thereof.

14. The composition of claim 13, wherein the component C-1 is a styrene-maleic anhydride copolymer.

25. A molded article produced by injection-molding the aromatic polycarbonate resin composition of claim 10.

15. A method for producing an aromatic polycarbonate resin composition which comprises mixing (A) 100 parts by weight of aromatic polycarbonate (component A), (B) 0.1 to 20 parts by weight of layer silicate and (C) 0.1 to 50 parts by weight of compound (component C) having an affinity for the aromatic polycarbonate (component A) and having a hydrophilic component,

wherein as the layer silicate, a layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following formula (I):

16. The method of claim 15, wherein R¹ and R² in the general formula (I) relating to the component B are an alkyl group having 7 to 14 carbon atoms.

17. The method of claim 15, wherein the mixing is melt-kneading.

18. The method of claim 15, wherein the component C is a polymer having an affinity for the aromatic polycarbonate (component A) and having a functional group comprising a carboxyl group and/or a derivative thereof.

19. The method of claim 18, wherein the component C is a styrene-containing polymer (component C-1) having a functional group comprising a carboxyl group and/or a derivative thereof.

20. The method of claim 18, wherein the component C-1 is a styrene-maleic anhydride copolymer.

21. The method of claim 15, wherein the component B and the component C are melt-kneaded in advance so as to obtain a melt-kneaded mixture which is then melt-kneaded with the component A.

22. The method of claim 15, wherein the aromatic polycarbonate resin composition is produced by further mixing (D) a partial ester and/or a full ester (component D) of a higher fatty acid and a polyhydric alcohol in an amount of 0.005 to 1 part by weight based on 100 parts by weight of the component A.

23. An additive for improving the physical properties of an aromatic polycarbonate resin, the additive comprising (C) 100 parts by weight of compound (component C) having an affinity for an aromatic polycarbonate (component A) and having a hydrophilic component and (B) 1 to 300 parts by weight of layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I):