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    Nanocellular thermoplastic foam and process for making the same
    2.
    发明授权
    Nanocellular thermoplastic foam and process for making the same 有权
    纳米细胞热塑性泡沫及其制造方法

    公开(公告)号：US09145477B2

    公开(公告)日：2015-09-29

    申请号：US14421851

    申请日：2013-09-13

    Applicant: Dow Global Technologies LLC

    Inventor： Lingbo Zhu ,  Stéphane Costeux ,  Kshitish A. Patankar ,  Jonathan D. Moore

    IPC: C08J9/00 ,  C08J9/12 ,  C08J9/04

    CPC classification number: C08J9/04 ,  B29C44/348 ,  B29K2025/06 ,  B29K2033/08 ,  B29K2101/10 ,  B29K2105/041 ,  B29K2995/0007 ,  B29K2995/0015 ,  C08J9/0023 ,  C08J9/0042 ,  C08J9/122 ,  C08J2203/00 ,  C08J2203/06 ,  C08J2205/042 ,  C08J2325/06 ,  C08J2325/12 ,  C08J2333/06 ,  C08J2333/12

    Abstract: Prepare a thermoplastic polymer foam having a porosity of 70% or more and at least one of: (i) an average cell size of 200 nanometers or less; and (ii) a nucleation density of at least 1×1015 effective nucleation sites per cubic centimeter of foamable polymer composition not including blowing agent using a foamable polymer composition containing a thermoplastic polymer selected from styrenic polymer and (meth)acrylic polymers, a blowing agent comprising at least 20 mole-percent carbon dioxide based on moles of blowing agent and an additive having a Total Hansen Solubility Parameter that differs from that of carbon dioxide by less than 2 and that is present at a concentration of 0.01 to 1.5 weight parts per hundred weight parts thermoplastic polymer.

    Abstract translation: 制备孔隙率为70％以上且至少其中之一的热塑性聚合物泡沫体：（i）平均泡孔尺寸为200纳米以下; 和（ii）使用包含选自苯乙烯聚合物和（甲基）丙烯酸类聚合物的热塑性聚合物的发泡性聚合物组合物，不包括发泡剂的至少1×1015有效成核点/立方厘米的可发泡聚合物组合物的成核密度，发泡剂 其包含基于发泡剂的摩尔数的至少20摩尔％的二氧化碳和具有不同于二氧化碳的总汉森溶解度参数的添加剂，其浓度小于2，并且以0.01至1.5重量份/ 重量份热塑性聚合物。

    Mold process for making nanofoam
    8.
    发明授权
    Mold process for making nanofoam 有权

    公开(公告)号：US10322534B2

    公开(公告)日：2019-06-18

    申请号：US15121604

    申请日：2015-05-20

    Applicant: Dow Global Technologies LLC

    Inventor： Stéphane Costeux ,  Daniel A. Beaudoin ,  Hyunwoo Kim ,  Devin A. Foether

    IPC: C08J9/00 ,  C08J9/12 ,  B29C44/02 ,  B29C44/34 ,  B29C44/58 ,  B29K105/04

    Abstract: Prepare nanofoam by: (a) providing a mold (10) with a mold cavity (12) defined by mold walls defining a sealable port (32); (b) providing a foamable polymer mixture containing a polymer and a blowing agent at a pressure at least 690 kilopascals above the saturation pressure for the polymer and blowing agent; (c) introducing the foamable polymer mixture into the mold cavity (12) while maintaining a temperature and pressure at least 690 kilopascals above the saturation pressure and controlling the pressure in the mold cavity (12) by expanding a wall of the mold; and (d) releasing pressure around the foamable mixture by moving a mold wall (20) at a rate of at least 45 centimeters per second, causing the foamable polymer mixture to expand into nanofoam having a porosity of at least 60 percent, a volume of at least 100 cubic centimeters and at least two orthogonal dimensions of four centimeter or more.

    STYRENE-CARBOXYLIC ACID COPOLYMER FOAM
    9.
    发明申请
    STYRENE-CARBOXYLIC ACID COPOLYMER FOAM 审中-公开
    苯乙烯 - 羧酸共聚物泡沫

    公开(公告)号：US20160237233A1

    公开(公告)日：2016-08-18

    申请号：US15023742

    申请日：2014-10-29

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： Lawrence S. Hood ,  Stéphane Costeux ,  Scott T. Matteucci

    IPC: C08J9/14 ,  F16L59/02

    CPC classification number: C08J9/146 ,  C08J2203/142 ,  C08J2203/162 ,  C08J2325/08 ,  C08L25/08 ,  F16L59/028

    Abstract: Prepare a polymer foam by expanding a foamable polymer composition of a copolymer component and a blowing agent where the copolymer component accounts for more than 50 weight-percent of the total polymer weight in the foamable polymer composition and is one or more than one styrene-carboxylic acid copolymer having an acid number of 20 or higher while the blowing agent comprises a fluorinated blowing agent, less than 70 weight-percent of which is 1,1,2,2-tetrafluoroethane and less than five weight-percent is carbon dioxide and C3-C5 hydrocarbons make up less than 30 mole-percent of the blowing agent; expand the foamable polymer composition into a polymer foam having an average cell size of less than 0.5 millimeters where the copolymer composition is a continuous phase in the polymer foam.

    Abstract translation: 通过使共聚物组分和发泡剂的可发泡聚合物组合物膨胀来制备聚合物泡沫，其中共聚物组分占可发泡聚合物组合物中总聚合物重量的50重量％以上，并且是一种或多种苯乙烯 - 羧酸 酸性共聚物的酸值为20以上，而发泡剂为含氟发泡剂，小于70重量％为1,1,2,2-四氟乙烷且少于5重量％为二氧化碳和C3 -C5烃类占发泡剂的30％以下; 将可发泡聚合物组合物膨胀成平均泡孔尺寸小于0.5毫米的聚合物泡沫体，其中共聚物组合物是聚合物泡沫体中的连续相。

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