IP Library Granted Patent US 7,589,137
Granted Patent B2
US 7,589,137 · App. 11/380,135 · Granted Sep 15, 2009

Resin composition and molded product obtained therefrom

Assignee: Sony Corporation
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Quick Facts
Patent No.
US 7,589,137
App. No.
11/380,135
Granted
Sep 15, 2009
Kind
B2
Abstract

A resin composition includes a polyester capable of forming a crystal structure, at least one member selected from uracil and a uracil derivative used as a nucleating agent. A resin molding obtained from the composition is also provided.

Claims (7)

1. A resin composition comprising, at least, a polyester capable of forming a crystal structure wherein said polyester consists of polylactic acid, and a nucleating agent, said nucleating agent consisting of a member selected from the group consisting of uracil and uracil derivatives; and a hydrolysis inhibitor for said polyester.

2. The resin composition according to claim 1 , wherein said member consists of uracil.

3. The resin composition according to claim 1 , wherein said member consists of a uracil derivative.

4. The resin composition according to claim 3 , wherein said uracil derivative consists of 6-methyluracil.

5. A resin molding obtained from a resin composition which comprises, at least, polylactic acid, at least one of uracil and a uracil derivative, and a hydrolysis inhibitor for said polylactic acid.

6. The resin composition according to claim 1 , wherein the amount of said nucleating agent is in a range from 0.001 part by weight to 10 parts by weight, per 100 parts by weight of polylactic acid.

7. The resin composition according to claim 1 , wherein a particle size of the nucleating agent is at about 0.5 μm or below.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 14, 2016
From: SONY CORPORATION
To: LERNER, DAVID, LITTENBERG, KRUMHOLZ & MENTLIK, LLP
Reel/Frame 040733/0448 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 8, 2006
From: SATO, NORITAKA; NOGUCHI, TSUTOMU; MORI, HIROYUKI; FUJIHIRA, YUKO
To: SONY CORPORATION
Reel/Frame 017584/0653 →
Priority Claims (1)
JP P2005-132132 · Apr 28, 2005 · national
Continuity (1)
Related Publication 20060247340A1 · Nov 2, 2006