Process for production of polylactic acid resin composition
a technology composition, which is applied in the direction of applications, inks, dragees, etc., can solve the problems of poor product quality, achieve excellent heat resistance, improve crystallization velocity and heat resistance of polylactic acid resin composition, and accelerate crystallization velocities
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production example 1
of Crystal Nucleating Agent Composition
[0206]Seven-hundred and twenty grams of the carboxylic acid ester [(MeEO3)2SA] obtained in Production Example 1 of Carboxylic Acid Ester and 36 g of a zinc salt of an unsubstituted phenylphosphonic acid (manufactured by NISSAN CHEMICAL INDUSTRIES, LTD.: “ECOPROMOTE”) were supplied into a media pulverizer (manufactured by Igarashi Kikai Seizo, “Sand Grinder TSG-6H”: pulverizer volume: 800 mL, filled with 720 g of zirconia beads having sizes of 1 mmφ, filling ratio: 30%, agitation blade diameter: 70 mm) While allowing to flow cold water through a jacket of the pulverizer, the mixture was subjected to a pulverization treatment at a rotational speed of 2,000 r / min (agitation peripheral speed: 7 m / s) for 9 hours, to provide a crystal nucleating agent-1 (finely pulverized zinc salt of phenylphosphonic acid). The temperature during the operation was in the range of from 10° to 90° C.
production example 2
of Crystal Nucleating Agent Composition
[0207]The same procedures as in Production Example 1 were carried out except that the kinds of a carboxylic acid ester was changed to “DAIFATTY-101” (manufactured by DAIHACHI CHEMICAL INDUSTRY CO., LTD., diester formed between adipic acid and a 1 / 1 mixture of diethylene glycol monomethyl ether and benzyl alcohol), to provide a crystal nucleating agent-2 (finely pulverized zinc salt of phenylphosphonic acid).
production example 3
of Crystal Nucleating Agent Composition
[0208]The same procedures as in Production Example 2 were carried out except that the amount of the carboxylic acid ester [(MeEO3)2SA] supplied was changed to 360 g, and at the same time 360 g of “DAIFATTY-101” was supplied, to provide a crystal nucleating agent-3 (finely pulverized zinc salt of phenylphosphonic acid).
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