| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for suppressing the occurrence of a molded product having defective appearances caused by formation of colored resin-deformed substance or by contamination with solid foreign matters in production of a white resin molded product (excluding a resin molded product to be mounted on an automobile) used for various applications by molding a white thermoplastic resin composition. <P>SOLUTION: The granular white resin composition for production of the resin molded products is obtained by adding a small amount of a black pigment to a mixture of an unused thermoplastic resin component and a white pigment and subsequently granulating. The sheet prepared from the resin composition has a lightness (L<SP POS="POST">*</SP>) and a light transmittance satisfying the relationship of the expression: 1,300≤(L<SP POS="POST">*</SP>×B)≤4,144 [wherein L<SP POS="POST">*</SP>is a lightness of the sheet of 3 mm thickness prepared from the resin composition; and B is a total light transmittance (%) of the sheet having thickness of 50 μm]. <P>COPYRIGHT: (C)2012,JPO&INPIT |
