公开(公告)号：US20160317976A1

公开(公告)日：2016-11-03

申请号：US15206659

申请日：2016-07-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jonathan F. Hester ,  James S. Mrozinski ,  Derek J. Dehn

IPC: B01D69/12 ,  B01D71/06 ,  B01D67/00 ,  B01D69/02

CPC classification number: B01D69/122 ,  B01D67/002 ,  B01D67/0086 ,  B01D69/02 ,  B01D71/06 ,  B01D71/26 ,  B01D2323/00 ,  B01D2323/18 ,  B01D2323/42 ,  B01D2325/02 ,  B01D2325/08 ,  B29C48/08 ,  B29C48/21 ,  B29C48/30 ,  B29C48/307 ,  B29C55/005 ,  B29K2105/0005 ,  B29K2105/04 ,  B29L2031/755

Abstract: A porous membrane that includes a first zone, the first zone including a crystallizable polymer; and a first nucleating agent, the first nucleating agent having a first concentration in the first zone, the first zone having a first average pore size; and a second zone, the second zone including a crystallizable polymer; and a second nucleating agent, the second nucleating agent having a second concentration in the second zone, the second zone having a second average pore size, wherein the crystallizable polymer is the same in the first zone and second zone, wherein the first average pore size is not the same as the second average pore size, wherein the first nucleating agent and the second nucleating agent are the same or different, wherein the first concentration and the second concentration agent are the same or different and with the proviso that the first nucleating agent and the first concentration are not the same as the second nucleating agent and the second concentration. Methods of making membranes are also disclosed.

Abstract translation: 一种多孔膜，其包括第一区域，所述第一区域包括可结晶聚合物; 和第一成核剂，所述第一成核剂在所述第一区域具有第一浓度，所述第一区域具有第一平均孔径; 和第二区域，所述第二区域包括可结晶聚合物; 和第二成核剂，所述第二成核剂在所述第二区域具有第二浓度，所述第二区域具有第二平均孔径，其中所述可结晶聚合物在所述第一区域和第二区域中相同，其中所述第一平均孔径 与第二平均孔径不同，其中第一成核剂和第二成核剂相同或不同，其中第一浓度和第二浓缩剂相同或不同，条件是第一成核剂 并且第一浓度与第二成核剂和第二浓度不相同。 还公开了制备膜的方法。

公开(公告)号：US20130096194A1

公开(公告)日：2013-04-18

申请号：US13692391

申请日：2012-12-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Aizoh Sakurai ,  Kana Akainaga ,  Naoyuki Toriumi ,  James S. Mrozinski ,  Matthew J. Schmid

IPC: A61K47/30

CPC classification number: A61K47/30 ,  B29C55/005 ,  B29K2067/00 ,  B29K2067/046 ,  B29K2105/04 ,  B29K2995/006 ,  C08J9/0023 ,  C08J9/0066 ,  C08J9/26 ,  C08J9/283 ,  C08J2201/046 ,  C08J2367/04 ,  C08K3/34 ,  C08K5/0083 ,  C08K5/11

Abstract: The present disclosure describes a method for forming microporous and antimicrobial articles. The method comprises preparing an initial composition containing a semicrystalline polylactic acid material, a nonpolymeric aliphatic ester diluent, and a nucleating agent. The initial composition is heated to form a melt blended composition. Upon cooling, the melt blended composition phase separates into a composition having two continuous phases. A network of interconnected micropores may be formed by stretching the composition, by removing at least a portion of the nonpolymeric aliphatic ester diluent from the composition, or a combination thereof.

Abstract translation: 本公开描述了形成微孔和抗微生物制品的方法。 该方法包括制备含有半结晶聚乳酸材料，非聚合脂族酯稀释剂和成核剂的初始组合物。 将初始组合物加热以形成熔融共混组合物。 在冷却时，熔融共混组合物相分离成具有两个连续相的组合物。 通过从组合物中除去至少一部分非聚合脂族酯稀释剂或其组合，可以通过拉伸组合物形成相互连接的微孔网。