Method for producing resin composition

• US 10,640,642 B2
• Filed: 11/02/2016
• Issued: 05/05/2020
• Est. Priority Date: 11/04/2015
• Status: Active Grant

• Current Assignee: Mitsubishi Gas Chemical Company Incorporated (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Gas Chemical Company Incorporated (Mitsubishi Electric Corporation)
• Inventors: Kato, Noriyuki, Kondo, Mitsuteru, Shiratake, Munenori, Ishihara, Kentaro, Hirose, Koji, Ikeda, Shinya
• Primary Examiner(s): Boykin, Terressa
• Application Number:
  US15/770,901
• Publication Number:
  US 20180312689A1
• Time in Patent Office: Days
• Field of Search: 528196, 528198
• CPC Class Codes: C08G 64/04 Aromatic polycarbonates
• CPC Class Codes: C08G 64/06 not containing aliphatic unsaturation
• CPC Class Codes: C08G 64/307 and phenols
• CPC Class Codes: C08G 65/38 derived from phenols
• CPC Class Codes: C08K 5/005 Stabilisers against oxidation, heat, light, ozone
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

It is an object of the present invention to provide a method for obtaining a resin composition in which coloration is suppressed. According to an embodiment, provided is a method for producing a resin composition, including: (a) obtaining a resin by polymerization of a resin raw material containing a compound represented by formula (1) below and (b) obtaining a resin composition by mixing an additive into the resin, wherein a polymerization temperature T1 in step (a) falls within the range of 230° C.<T1<250° C., and a mixing temperature T2 in step (b) falls within the range of 250° C.≤T2<280° C.

Claims

1. A method for producing a resin composition, comprising:

(a) obtaining a resin by polymerization of a resin raw material containing a compound represented by formulas (1) and (3),

in which formula (1) is;

2. The method according to claim 1, wherein the polymerization is performed under a pressure of 1 Torr or less.

3. The method according to claim 1, wherein X is ethylene.

4. The method according to claim 1, wherein n is 1.

5. The method according to claim 1, wherein the compound represented by formula (1) is selected from the group consisting of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene and 9,9-bis(4-(2-hydroxyethoxy)-3-phenylphenyl)fluorene.

6. The method according to claim 1, wherein the resin further contains a structural unit derived from a compound represented by formula (2) below:

7. The method according to claim 6, wherein

p and q are 0, and

W is:

8. The method according to claim 6, wherein the compound represented by formula (2) is bisphenol A.

9. The method according to claim 1, wherein Z is ethylene.

10. The method according to claim 1, wherein m is 1.

11. The method according to claim 1, wherein the compound represented by formula (3) is 2,2′

-bis(2-hydroxyethoxy)-1,1′

-binaphthalene.

12. The method according to claim 1, wherein the resin is selected from the group consisting of a polycarbonate resin, a polyester resin, and a polyester carbonate resin.

13. The method according to claim 12, wherein the resin is a polycarbonate resin.