Highly transmitting and diffusion plate

Abstract

Abstract PURPOSE:To obtain a light diffusion plate, having permanent dust sticking resistance and suitable as molding materials for lighting covers, etc., by blending an acrylic polymer with a specific polyamide-imide elastomer, organic or inorganic diffusing agent, etc., in specific amounts. CONSTITUTION:A light diffusion plate obtained by blending 100 pts.wt. total amount of (A) 70-97wt.% acrylic resin and (B) 30-3wt.% polyamide-imide elastomer, composed of (B1) caprolactam, (B2) one or more selected from aromatic tricarboxylic acids, aromatic tetracarboxylic acids and acid anhydrides thereof capable of forming one or more imide rings and (B3) polyoxyalkylene glycols containing >=50wt.% polyoxyethylene glycol with 40-85wt.% content of the component (B3) and having >=1.5 relative viscosity with (C) 0.05-30 pts.wt. particles, having a refractive index different from that of the aforementioned mixture by 0.01-0.2 and 0.3-300mu average particle diameter and, as necessary, (D) 0.01-10 pts.wt. one or more selected from aromatic sulfonic acids, etc.

Inventors

• 👤 Masamichi Kaneko
• 👤 正道 金子
• 👤 Kiyoshi Shimamura
• 👤 島村　喜代司
• 👤 Tsutomu Teraoka
• 👤 勉 寺岡

Bibliographic Details