PURPOSE: A composition having improved molding and processing characteristics, providing a molded article having improved transparency, easily sliding properties, and surface configuration, obtained by blending a polyester with a P compound, Li compound and Ca compound by a specific method during synthesis of the polyester, so that internal particles are formed.
CONSTITUTION: During synthesis of a polyester, the reaction is carried out upto ≥90% ester reaction ratio, preferably 10×10-4W100×10-4mol phosphorus compound based on 1mol total acid component of raw material and 0.4W1.2 times as much lithium compound (e.g., lithium acetate, etc.) as phosphorus are added to the reaction system. After the condensation reaction is started, when 5W60min are passed after the reaction system becomes usually 270°C and ≤760mmHg, 0.1W 0.7 as much calcium compound (e.g., calcium acetate, etc.) as phosphorus is added to the reaction system, so that inner particles (having ≤ several μ, preferably ≤2μ) are formed, to give a composition having the transparency and solution haze (H%) shown by the formula H≥1.28T (H≥20).
MATSUMOTO TETSUO
KOIKE YOSHITO
ICHIKAWA MIHOKO
ABE TOSHIKAZU
SAKAI KUMIKO
| JPS50101494A | 1975-08-12 | |||
| JPS50143894A | 1975-11-19 | |||
| JPS5490397A | 1979-07-18 | |||
| JPS56127626A | 1981-10-06 | |||
| JPS50101492A | 1975-08-12 | |||
| JPS50101493A | 1975-08-12 |