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Decoration sheet for injection molding

A technology of injection molding and decorative sheets, which is applied in the directions of decorations, applications, household appliances, etc., can solve the problem that the chemical resistance is not fully disclosed, the mechanical strength and chemical resistance of polycarbonate materials are not suitable for application, and it cannot be said to be obtained Heat resistance, mechanical strength, chemical resistance, fluidity, etc., to achieve excellent whitening resistance, excellent chemical resistance, and excellent formability

Inactive Publication Date: 2012-05-23
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical strength and chemical resistance of these polycarbonate materials are not enough for molded products
[0006] Although a carbonate polymer using isosorbide has been proposed, it cannot be said that it is a resin that has a comprehensive balance of heat resistance, mechanical strength, chemical resistance, and fluidity suitable for molded products.
In addition, the technical proposals disclosed in these documents are only about the glass transition temperature, and furthermore, basic mechanical properties, and do not fully disclose properties such as chemical resistance, which are important for molded product applications.

Method used

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  • Decoration sheet for injection molding
  • Decoration sheet for injection molding
  • Decoration sheet for injection molding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0147] 1,608 parts by weight (11 moles) of isosorbide and 2,356 parts by weight (11 moles) of diphenyl carbonate were put into the reactor, and 1.0 parts by weight (1× 10 -4 mol) of tetramethylammonium hydroxide, and 1.1×10 -3 Parts by weight (relative to 1 mole of diphenyl carbonate is 0.25 × 10 -6 mol) of sodium hydroxide, heated to 180°C under nitrogen atmosphere and normal pressure to carry out the melting reaction.

[0148] Under stirring, slowly reduce the pressure in the reaction tank for 30 minutes, and reduce the pressure to 13.3×10 while distilling off the generated phenol. -3 MPa. After reacting in this state for 20 minutes, the temperature was raised to 200°C, and then the pressure was reduced slowly over 20 minutes, while the phenol was distilled off at 4.00×10 -3 The reaction was carried out at MPa for 20 minutes, the temperature was further raised to 220° C. for 30 minutes, and the temperature was raised to 250° C. for 30 minutes.

[0149] Next, slowly deco...

Embodiment 2

[0152] 66.42 parts by weight (0.45 moles) of isosorbide, 11.52 parts by weight (0.15 moles) of 1,3-propanediol (PD) and 129.81 parts by weight (0.61 moles) of diphenyl carbonate were put into the reactor as a polymerization Catalyst uses 1.0 parts by weight (relative to 1 mole of diphenyl carbonate is 1 * 10 -4 mol) of tetramethylammonium hydroxide, and 1.1×10 -3 Parts by weight of sodium hydroxide (relative to 1 mole of diphenyl carbonate is 0.25 × 10 -6 mol), except that, the melt polymerization of the polycarbonate resin was carried out in the same manner as in Example 1. The obtained polymer had a specific viscosity of 0.25 and a glass transition temperature of 116°C.

[0153] The obtained polycarbonate resin was carried out in the same manner as in Example 1 to obtain a base film. Table 1 shows the results of evaluating the plane orientation coefficient, total light transmittance, haze, solvent resistance, and pencil hardness of this film.

Embodiment 3

[0155] Put 731 parts by weight (5.0 moles) of isosorbide, 720 parts by weight (5.0 moles) of 1,4-cyclohexanedimethanol (CHDM) and 2142 parts by weight (10 moles) of diphenyl carbonate into the reactor 1.0 parts by weight (1×10 per mole of diphenyl carbonate) was used as a polymerization catalyst -4 mol) of tetramethylammonium hydroxide, and 1.1×10 -3 Parts by weight of sodium hydroxide (relative to 1 mole of diphenyl carbonate is 0.25 × 10 -6mol), except that, the melt polymerization of the polycarbonate resin was carried out in the same manner as in Example 1. The obtained polymer had a specific viscosity of 0.35 and a glass transition temperature of 104°C.

[0156] The obtained polycarbonate resin was carried out in the same manner as in Example 1 to obtain a base film. Table 1 shows the results of evaluating the plane orientation coefficient, total light transmittance, haze, solvent resistance, and pencil hardness of this film.

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Abstract

Provided is a decoration sheet for injection molding, said decoration sheet comprising a decoration layer laminated to at least one side of a base film that comprises a polycarbonate resin containing a plant-derived ether diol residual. When used to apply a decoration to a resin molded product, the provided decoration sheet exhibits excellent resistance to deformation, warping, and whitening.

Description

technical field [0001] The present invention relates to a decorative sheet for injection molding, which uses polycarbonate as a base film containing a structural unit that can be derived from carbohydrates such as starch, which is a biomass resource, and has moldability, chemical resistance, deformation resistance, and strain resistance. , Excellent whitening resistance, and decorating the resin molding, further imparting hard coating properties such as abrasion resistance and high surface hardness. Background technique [0002] Conventionally, as a method of decorating a resin molded article to further impart hard coat properties such as abrasion resistance and high surface hardness, it is known to laminate a decorative layer on a base film and laminate a hard coat layer as the outermost layer. A method of pasting the obtained decorative sheet for injection molding when molding a resin molded product. As the base film, films formed of various resins can be mentioned, but i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B29C45/14B32B27/00C08J5/18
CPCB32B2451/00B32B27/365B29C45/14811B29K2995/0087B29K2669/00B32B27/08B32B27/308B32B27/36B32B2307/554B32B2307/714Y10T428/266Y10T428/28Y10T428/31507B32B2369/00B32B2250/03B32B2255/10
Inventor 木下真美
Owner TEIJIN LTD
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