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Polylactic acid-based decorative body

A technology of polylactic acid and decorative body, which is applied in decorative art, decorative structure, transportation and packaging, etc., and can solve the problems of damage to incinerators, high volume occupancy, and large discharge

Inactive Publication Date: 2012-09-19
ORIGIN ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during incineration, high heat is generated, the incinerator is damaged, or a large amount of carbon dioxide is emitted, which causes problems such as an increase in environmental load.
During landfill treatment, due to the high volume occupancy rate, it does not decompose in the soil, which leads to insufficient disposal sites and landfill sites.
In addition, when released into the natural world, environmental damage problems such as adverse effects on wild animals occur

Method used

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  • Polylactic acid-based decorative body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Fabrication of Substrate 1

[0050]100 parts by mass of polylactic acid resin (TERRAMACTE-4000N, manufactured by UNITIKA, mass average molecular weight Mw in terms of polystyrene: 150000), 115.5 parts by mass of aluminum hydroxide (HIGILITE HP-350, manufactured by Showa Denko) as a flame retardant, 5 parts of phosphorus compound (sps-100, manufactured by Otsuka Chemical Industry), 1 part by mass of dripping preventive agent (POLYFLON MPA, manufactured by Daikin Industry), 2 parts by mass of hydrolysis inhibitor (Stabaxol P, manufactured by Rein Chemie), crystal nucleating agent (ECOPROMOTE, manufactured by Nissan Chemical) 2 parts by mass, and plasticizer (DAIFATTY-101, manufactured by Daihachi Chemical) 10 parts by mass were melt-kneaded at 180° C. using a twin-screw extruder (S1 KRCKneader, manufactured by Kurimoto) extrude. The extruded resin was cut into pellets to obtain a polylactic acid resin composition. Then, a test piece was molded by an injection moldin...

Embodiment 2

[0060] Except that the main ingredient of the coating for the functional layer is 100 parts by mass, and the curing agent is 27.8 parts by mass, according to Example 1, a polylactic acid-based decorative body is produced. The molar ratio of the OH groups contained in the acrylic resin and the NCO groups contained in the polyfunctional isocyanate compound in the paint for the functional layer was 1:5.

Embodiment 3

[0062] Except that the main ingredient of the coating for the functional layer is 100 parts by mass, and the curing agent is 33.3 parts by mass, according to Example 1, a polylactic acid-based decorative body is produced. The molar ratio of the OH groups contained in the acrylic resin and the NCO groups contained in the polyfunctional isocyanate compound in the functional layer coating material was 1:6.

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Abstract

An object of the present invention is to provide a polylactic acid-based decorative body that is polylactic acid resin-based and has a synthetic resin coating film at the uppermost layer so that: the disadvantage of polylactic acid resin can be compensated for; environmental loading can be reduced; a good appearance can be provided; its surface can be prevented from being affected or deteriorated by sweat, hand cream, or the like on the hand of the user; and it can be used in electronic equipment cases. The polylactic acid-based decorative body according to the present invention includes a polylactic acid resin-containing substrate, a polylactic acid resin-containing adhesion layer provided on the substrate, and at least one functional layer that is formed on the adhesion layer by applying an acrylic urethane coating composition, wherein in the acrylic urethane coating composition, the molar ratio of OH groups in an acrylic resin to NCO groups in a polyfunctional isocyanate is 1:4 to 1:6.

Description

technical field [0001] The invention relates to a polylactic acid-based decorative body that satisfies the required performance of an electronic instrument casing. Background technique [0002] In recent years, from the viewpoint of environmental protection, reduction in the usage of petroleum-derived materials has been demanded, and the use of plant-derived materials has been studied as an alternative. [0003] Examples of petroleum-derived materials include synthetic resins such as polycarbonate resin, polycarbonate resin / acrylonitrile-butadiene-styrene copolymer (PC / ABS), and aromatic nylon. These materials are characterized by light weight, high strength, and long life, and can be used in various fields. However, during incineration treatment, high heat is generated, the incinerator is damaged, and a large amount of carbon dioxide is discharged, which causes problems such as an increase in environmental load. During landfill treatment, due to the high volume occupancy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/00C09D175/04C08J7/043C08J7/046
CPCB44C3/02C08G18/428C09D175/04C08J7/042C08J2367/04C08J2467/04C08J2475/04Y10T428/31565Y10T428/31551Y10T428/31971C08J7/043C08J7/046
Inventor 可儿聪木内幸浩
Owner ORIGIN ELECTRIC CO LTD
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