公开(公告)号：EP2524004B1

公开(公告)日：2015-11-11

申请号：EP11700056.2

申请日：2011-01-06

Applicant: BASF SE

Inventor： FÜßL, Andreas ,  SAMPATH, Bangaru ,  HOFMANN, Maximilian ,  BELLIN, Ingo ,  NALAWADE, Sameer ,  HAHN, Klaus ,  KÜNKEL, Andreas ,  LOOS, Robert

IPC: C08L67/04 ,  C08J9/16

CPC classification number: C08J9/127 ,  C08J9/0061 ,  C08J9/16 ,  C08J9/18 ,  C08J2333/14 ,  C08J2367/02 ,  C08J2367/04 ,  C08J2463/00 ,  C08J2467/02 ,  C08L33/068 ,  C08L67/02 ,  C08L67/04 ,  C08L2666/02

公开(公告)号：EP2524004A2

公开(公告)日：2012-11-21

申请号：EP11700056.2

申请日：2011-01-06

Applicant: BASF SE

Inventor： FÜßL, Andreas ,  SAMPATH, Bangaru ,  HOFMANN, Maximilian ,  BELLIN, Ingo ,  NALAWADE, Sameer ,  HAHN, Klaus ,  KÜNKEL, Andreas ,  LOOS, Robert

IPC: C08L67/04 ,  C08J9/16

CPC classification number: C08J9/127 ,  C08J9/0061 ,  C08J9/16 ,  C08J9/18 ,  C08J2333/14 ,  C08J2367/02 ,  C08J2367/04 ,  C08J2463/00 ,  C08J2467/02 ,  C08L33/068 ,  C08L67/02 ,  C08L67/04 ,  C08L2666/02

Abstract: Producing expandable polylactic acid-containing granules, comprises: (a) melting and mixing (i) polylactic acid, (ii) at least one additional polymer, (iii) a diepoxide or polyepoxide and (iv) at least one additive, preferably nucleating agent; (b) mixing (v) an organic blowing agent and (vi) a co-blowing agent including nitrogen, carbon dioxide, argon and/or helium, into the polymer melt via a static or dynamic mixer; (c) discharging the mixture via a nozzle plate with holes; and (d) granulating the blowing agent-containing melt directly behind the nozzle plate under water. Producing expandable polylactic acid-containing granules, comprises: (a) melting and mixing (i) polylactic acid (50-99.9 wt.%, based on the total weight of the components (i)-(iii)), (ii) at least one additional polymer (0-49.9 wt.%, based on the total weight of the components (i)-(iii)), (iii) a diepoxide or polyepoxide (0.1-2 wt.%, based on the total weight of the components (i)-(iii)) and (iv) at least one additive, preferably nucleating agent (0-10 wt.%, based on the total weight of the components (i)-(iii)); (b) mixing (v) an organic blowing agent (3-7 wt.%, preferably 1-7 wt.%, based on the total weight of the components (i)-(iv)) and (vi) a co-blowing agent including nitrogen, carbon dioxide, argon and/or helium (0.01-5 wt.%), into the polymer melt via a static or dynamic mixer at a temperature of at least 140[deg] C; (c) discharging the mixture via a nozzle plate with holes, whose diameter at the nozzle outlet is not > 1.5 mm; and (d) granulating the blowing agent-containing melt directly behind the nozzle plate under water at a pressure of 1-20 bar. Independent claims are also included for: (1) the expandable polylactic acid-containing granules with cavities with an average diameter of 0.1-50 mu m and a solid proportion of 93-97 wt.% obtained by the above method, comprising (in wt.%) (i) the polylactic acid (50-98.9, based on the total weight of components (i)-(iii)), (ii) at least one polyester based on aliphatic and aromatic dicarboxylic acids and aliphatic dihydroxy compounds (1-49.9, based on the total weight of components (i)-(iii)), (iii) an epoxide group-containing copolymer based on styrene, acrylic acid ester and/or methacrylic acid ester (0.1-2, based on the total weight of components (i)-(iii)), (iv) the additive (0-10, based on the total weight of components (i)-(iii)), and (v) the organic blowing agent (3-7), or a polylactic acid-containing polymer mixture; (2) producing particles of foam molded parts, comprising pre-foaming the expandable polylactic acid-containing granules with hot air or steam to form the foam particles with a density of 8-100 kg/m 3>, and then welding the foam particles in a closed mold; (3) the polylactic acid-containing polymer mixture comprising (in wt.%) (i) the polylactic acid (60-98.9, based on the total weight of components (i)-(iii)), (ii) at least one polyester (1-39.9, based on the total weight of components (i)-(iii)), based on (a) succinic acid (90-99.5 mol.%, based on the components (i)-(ii)), (b) at least one dicarboxylic acids with 8-20 carbon atoms (0.5-10 mol.%, based on the components (i)-(ii)), (c) 1,3-propanediol or 1,4-butanediol (98-102 mol.%, based on the components (i)-(ii)), (iii) the epoxide group-containing copolymer (0.1-2, based on the total weight of the components (i)-(iii)), and (iv) the nucleating agent (0-1, based on the total weight of components (i)-(iii)); and (4) foam materials comprising the polylactic acid-containing polymer mixture.

Abstract translation: （a）熔化并混合（i）聚乳酸，（ii）至少一种另外的聚合物，（iii）二环氧化物或聚环氧化物和（iv）至少一种添加剂，优选成核剂 ; （b）通过静态或动态混合器将（v）有机发泡剂和（vi）包含氮气，二氧化碳，氩气和/或氦气的共发泡剂混入聚合物熔体中; （c）通过具有孔的喷嘴板排出混合物; 和（d）在水下直接在喷嘴板后面将含发泡剂的熔体造粒。 （a）熔融和混合（i）聚乳酸（基于组分（i） - （iii）的总重量为50-99.9重量％），（ii）在 至少一种另外的聚合物（基于组分（i） - （iii））的总重量为0-49.9重量％），（iii）二环氧化物或聚环氧化物（0.1-2重量％，基于 （i） - （iii））和（iv）至少一种添加剂，优选成核剂（基于组分（i） - （iii）的总重量为0-10重量％）; （b）将（v）有机发泡剂（3-7重量％，优选1-7重量％，基于组分（i） - （iv）的总重量）和（vi） 包括氮气，二氧化碳，氩气和/或氦气（0.01-5重量％）的发泡剂通过静态或动态混合器在至少140℃的温度下进入聚合物熔体; （c）经由具有孔的喷嘴板排出混合物，所述孔的直径在喷嘴出口不大于1.5mm; （d）在1-20巴的压力下，在水下将含发泡剂的熔体直接造粒在喷嘴板后面。 独立权利要求还包括：（1）通过上述方法获得的具有平均直径为0.1-50μm，固体比例为93-97重量％的具有空腔的可膨胀聚乳酸颗粒，其包含（wt （i） - （i）聚乳酸（50-98.9，基于组分（i） - （iii）的总重量），（ii）至少一种基于脂族和芳族二羧酸和脂族二羟基化合物的聚酯（1） （iii）基于苯乙烯，丙烯酸酯和/或甲基丙烯酸酯的含环氧基团的共聚物（0.1-2，基于组分（i） - （iii）的总重量） （iv）添加剂（0-10，基于组分（i） - （iii）的总重量）和（v）有机发泡剂（3-7 ）或含聚乳酸的聚合物混合物; （2）生产泡沫成型部件的颗粒，包括用热空气或蒸汽预发泡含有可发性聚乳酸的颗粒以形成密度为8-100kg / m 3的泡沫颗粒，然后将泡沫颗粒 在封闭的模具中; （3）包含（以重量％计）（i）聚乳酸（60-98.9，基于组分（i） - （iii）的总重量）的含聚乳酸的聚合物混合物，（ii）至少一种 基于（a）基于组分（i） - （ii）的琥珀酸（90-99.5摩尔％））的聚酯（1-39.9，基于组分（i） - （iii）的总重量） （b）至少一种具有8-20个碳原子的二羧酸（基于组分（i） - （ii）的0.5-10摩尔％），（c）1,3-丙二醇或1,4-丁二醇（ 基于组分（i） - （ii）），（iii）含环氧基团的共聚物（0.1-2，基于组分（i） - （iii）的总重量计）为98-102摩尔％ ，和（iv）成核剂（0-1，基于组分（i） - （iii）的总重量）; 和（4）包含含聚乳酸的聚合物混合物的泡沫材料。