JP2009155489A5

JP2009155489A5 -

Info

Publication number: JP2009155489A5
Application number: JP2007335695A
Authority: JP
Filing date: 2007-12-27
Publication date: 2011-02-10
Anticipated expiration: 2027-12-27

Description

すなわち、本発明は以下のとおりである。
（１）（Ａ）ポリ乳酸樹脂１００重量部に対し、結晶化促進剤０．５〜５０重量部を配合してなる樹脂組成物からなり、球晶が存在せず、相対結晶化度が５０％以上であり、全光線透過率が７０％以上である成形品、
（２）電子顕微鏡による観察において、長軸方向の数平均粒子径が３００ｎｍ以下の粒子状物を含有する（１）に記載の成形品、
（３）（Ａ）ポリ乳酸樹脂が、（ａ）ポリ乳酸樹脂の総乳酸成分の内、Ｌ体が８０％以上含まれるかまたはＤ体が８０％以上含まれるポリ乳酸樹脂、および／または（ｂ）ポリ乳酸ステレオコンプレックスである（１）または（２）記載の成形品、
（４）前記結晶化促進剤が、（Ｂ）結晶核剤および／または（Ｃ）可塑剤からなり、（Ｂ）結晶核剤が、アミド化合物およびヒドラジド化合物から選択される少なくとも１種であり、（Ｃ）可塑剤が、２種以上の可塑剤を含むものである（１）〜（３）のいずれか１項に記載の成形品、
（５）前記（Ｃ）可塑剤の少なくとも１種がポリアルキレングリコール系可塑剤である（４）に記載の成形品、
（６）成形品の厚みが３ｍｍ未満である（１）〜（５）のいずれか１項に記載の成形品、
（７）ポリ乳酸樹脂組成物が、（Ａ）ポリ乳酸樹脂１００重量部に対し、（Ｄ）耐衝撃改良剤０．１〜２００重量部、（Ｅ）反応性化合物０．０１〜３０重量部、および（Ｆ）無機粒子０．１〜５０重量部から選ばれる少なくとも１種を配合してなる組成物である（１）〜（６）のいずれか１項に記載の成形品、
（８）（Ａ）ポリ乳酸樹脂１００重量部に対し、結晶化促進剤０．５〜５０重量部を配合してなり、電子顕微鏡による観察において、長軸方向の数平均粒子径が３００ｎｍ以下の粒子状物を含有する樹脂組成物、
（９）金型温度を樹脂組成物中のポリ乳酸樹脂由来のガラス転移温度以上および融点以下の温度範囲に設定し、成形サイクル１５０秒以下で射出成形してなることを特徴とする（１）〜（７）のいずれか１項に記載の成形品の製造方法。 That is, the present invention is as follows.
(1) (A) A resin composition comprising 0.5 to 50 parts by weight of a crystallization accelerator based on 100 parts by weight of a polylactic acid resin, having no spherulites and a relative crystallinity of 50. %, A molded product having a total light transmittance of 70% or more,
(2) In the observation with an electron microscope, the molded article according to ( 1 ), containing a particulate matter having a number average particle size in the major axis direction of 300 nm or less
(3) (A) The polylactic acid resin is (a) a polylactic acid resin containing 80% or more of L-form or 80% or more of D-form among the total lactic acid components of polylactic acid resin, and / or ( b) The molded article according to (1) or (2), which is a polylactic acid stereocomplex,
(4) The crystallization accelerator comprises (B) a crystal nucleating agent and / or (C) a plasticizer, and (B) the crystal nucleating agent is at least one selected from an amide compound and a hydrazide compound, (C) The molded article according to any one of (1) to (3), wherein the plasticizer contains two or more kinds of plasticizers ,
(5) The molded product according to ( 4 ), wherein at least one of the (C) plasticizer is a polyalkylene glycol plasticizer,
(6) The molded article according to any one of (1) to (5), wherein the thickness of the molded article is less than 3 mm,
(7) The polylactic acid resin composition comprises (D) 0.1 to 200 parts by weight of an impact modifier and (E) 0.01 to 30 parts by weight of a reactive compound with respect to 100 parts by weight of the (A) polylactic acid resin. And (F) the molded article according to any one of (1) to (6), which is a composition comprising at least one selected from 0.1 to 50 parts by weight of inorganic particles,
(8) (A) 0.5 to 50 parts by weight of a crystallization accelerator is blended with 100 parts by weight of a polylactic acid resin, and the number average particle diameter in the major axis direction is 300 nm or less in observation with an electron microscope. A resin composition containing particulate matter,
(9) The mold temperature is set to a temperature range not lower than the glass transition temperature and not higher than the melting point derived from the polylactic acid resin in the resin composition, and injection molding is performed in a molding cycle of 150 seconds or less (1) The manufacturing method of the molded article of any one of-( 7 ).

Claims

(A) It consists of a resin composition formed by blending 0.5 to 50 parts by weight of a crystallization accelerator with respect to 100 parts by weight of a polylactic acid resin. A molded product having a total light transmittance of 70% or more.

The molded article according to claim 1 , comprising a particulate matter having a number average particle size in the major axis direction of 300 nm or less in observation with an electron microscope.

(A) The polylactic acid resin is (a) a polylactic acid resin containing 80% or more of the L-form or 80% or more of the D-form among the total lactic acid components of the polylactic acid resin, and / or (b) poly The molded article according to claim 1 or 2, which is a lactic acid stereocomplex.

The crystallization accelerator comprises (B) a crystal nucleating agent and / or (C) a plasticizer, and (B) the crystal nucleating agent is at least one selected from an amide compound and a hydrazide compound, and (C) The molded article according to any one of claims 1 to 3, wherein the plasticizer contains two or more kinds of plasticizers .

The molded article according to claim 4 , wherein at least one of the (C) plasticizers is a polyalkylene glycol plasticizer.

The molded article according to any one of claims 1 to 5, wherein the thickness of the molded article is less than 3 mm.

The polylactic acid resin composition comprises (D) 0.1 to 200 parts by weight of an impact modifier, (E) 0.01 to 30 parts by weight of a reactive compound, and (A) 100 parts by weight of a polylactic acid resin. F) The molded article according to any one of claims 1 to 6, which is a composition comprising at least one selected from 0.1 to 50 parts by weight of inorganic particles.

(A) 0.5 to 50 parts by weight of a crystallization accelerator is blended with 100 parts by weight of a polylactic acid resin, and the number average particle size in the major axis direction is 300 nm or less in observation with an electron microscope. Containing a resin composition.

The mold temperature was set to the glass transition temperature or higher and a temperature range below the melting point of from polylactic acid resin in the resin composition of claim 1 to 7, characterized by being obtained by injection molding under the following molding cycle 150 seconds The manufacturing method of the molded article of any one of Claims 1.