Resin composition

A technology of resin composition and plastic resin, which is applied in the field of resin composition and can solve the problems of turbidity and opacity of polylactic acid resin

Inactive Publication Date: 2009-09-23
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, conventional crystallization of PLA resins produces micron to submicron sized crystals that scatter light, making PLA resin cloudy and opaque

Method used

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specific example

[0148] Specific examples thereof are listed below. [2-Hydroxy-4-(methacryloylethoxy)benzophenone]-methyl methacrylate copolymer, [2-hydroxy-4-(methacryloyloxymethoxy)benzophenone Ketone]-methyl methacrylate copolymer, [2-hydroxyl-4-(methacryloyloxyoctyloxy)benzophenone]-methyl methacrylate copolymer, [2-hydroxyl-4-( Methacryloyloxydodecyloxy)benzophenone]-methyl methacrylate copolymer, [2-hydroxy-4-(methacryloyloxybenzyloxy)benzophenone]-methyl Methyl acrylate copolymer, [2,2'-dihydroxy-4-(methacryloxyethoxy)benzophenone]-methyl methacrylate copolymer, [2,2'-dihydroxy- 4-(methacryloyloxymethoxy)benzophenone]-methyl methacrylate copolymer, and [2,2'-dihydroxy-4-(methacryloyloxyoctyloxy)diphenyl ketone]-methyl methacrylate copolymer.

[0149] The above-mentioned UV light absorbers can be used alone or in combination with each other.

[0150] >

[0151] Examples of lubricants are listed below. Petroleum lubricants (such as liquid paraffin), synthetic lubricants (such as hal...

Embodiment 1

[0201]

[0202] The resin composition is composed of polylactic acid resin ("H100" from Mitsui Chemical), polycarbonate resin ("Panlite L-1225LL" from Teijin Kasei) as a heat-resistant resin, and soluble azo Lake pigment PY191 ("PV Fast Yellow HGR" from Clariant, Japan) was prepared.

[0203] A resin composition was prepared by heating and melt mixing polylactic acid resin (60 pbw), polycarbonate resin (40 pbw) and PY191 (3 pbw). Melt mixing was accomplished with a Minimax-Mixruder (from Toyo Seiki) with the nozzle temperature maintained at 230°C.

[0204]

[0205] The crystallization characteristics of the resin composition were analyzed by differential scanning calorimetry (DSC) measuring its crystallization peak temperature. Specifically, DSC was performed by heating a resin composition sample (3-4 mg) placed in an aluminum pan to 230°C and then cooling to 60°C at a rate of 20°C / min. The exothermic peak due to crystallization observed around 100-140°C was considered t...

Embodiment 2

[0215] Except that the nucleating agent of polylactic acid resin is replaced with PR48:4, repeat the procedure of embodiment 1 to prepare resin composition, PR48:4 is soluble azo lake pigment, is manganese salt (from Dai-Nippon Ink and Chemicals "Symuler Red 3037"). The crystallization peak temperature of the resin composition was checked by DSC and observed under an optical microscope.

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Abstract

A resin composition includes polylactic acid resin, a plastic resin superior in heat resistance to the polylactic acid resin, and a nucleating agent that promotes crystallization of the polylactic acid resin, with the nucleating agent being a soluble azo lake pigment. The plastic resin superior in heat resistance to the polylactic acid resin is one which has a flexural modulus of elasticity no lower than 1000 MPa at 80 DEG C.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Patent Application JP 2008-050605 filed in the Japan Patent Office on Feb. 29, 2008, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to a resin composition composed of a polylactic acid resin and a plastic resin superior in heat resistance to the polylactic acid resin. More particularly, the present invention relates to crystal nucleating agents that promote crystallization of polylactic acid resins. Background technique [0004] The related synthetic resins are mainly produced from fossil resources such as petroleum, coal and natural gas. Since fossil resources that are their raw materials will soon be exhausted, they are accumulated in nature without being decomposed after being discarded, and their incineration emits carbon dioxide that causes global warming, so people are deeply...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K5/41
CPCC08L25/06C08K5/42C08K5/0083C08K5/3417C08L69/00C08L55/02C08L77/00C08L29/14C08L67/04C08L23/02C08L2666/02
Inventor 青木祐也佐藤则孝
Owner SONY CORP
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