Daicel-evonik Ltd.

Polyplastics-evonik Corporation

Daisuke Fujiki

Toshihiko Fujinaka

Prepared is a laminate including: a first layer formed of a first resin composition containing a first resin; and a second layer formed of a second resin composition containing a second resin, the first layer and the second layer being in contact with each other and integrated. The first resin includes an alicyclic polyamide resin having 20 mmol/kg or greater of amino groups, and the second resin includes an acid-modified (meth)acrylic resin. The second resin may have 100 mmol/kg or greater of carboxyl groups. The acid-modified (meth)acrylic resin may be an acid-modified polymethylmethacrylate resin. An average thickness of the first layer may be 0.15 times or more of an average thickness of the second layer. The average thickness of the first layer may be 200 μm or greater. When a weight is dropped onto the second layer side, the laminate may have a DuPont impact strength of 500 N/inch or greater. The laminate has excellent transparency, lightness, light resistance, and impact resistance.

Laminate, method for producing same, and use of same

Provided is a laminate that generates a structural color, where the laminate can be subjected to a deep-drawing process without deteriorating the color developing structure of the structural color. The laminate according to an embodiment of the present invention includes a polyamide layer () and a thermoplastic polyurethane layer () having a color developing structure of a structural color. The thermoplastic polyurethane layer () is preferably a thermoplastic polyurethane layer having a structure having recesses and protrusions on a face that is opposite a face in contact with the polyamide layer () or a layer formed by alternately laminating two types of thermoplastic polyurethanes having a difference in refractive indexes of 0.03 or greater.

Growing community of inventors

Tokyo, Japan

Daisuke Fujiki