公开(公告)号：US20180237574A1

公开(公告)日：2018-08-23

申请号：US15750541

申请日：2016-09-20

Applicant: Dow Global Technologies LLC

Inventor： Beverly J. Selle ,  Deborah A. Schutter ,  Megan Thomas ,  Stéphane Costeux

IPC: C08G18/12 ,  C08G18/76 ,  C08G18/32 ,  C08G18/48 ,  C08G18/66 ,  C08G18/30

CPC classification number: C08G18/12 ,  C08G18/2081 ,  C08G18/307 ,  C08G18/3206 ,  C08G18/4812 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/6674 ,  C08G18/7664 ,  C08G2101/00

Abstract: A one-component foam formulation contains a pre-polymer and a blowing agent, the pre-polymer being the reaction product of a polymeric polyol component having an average hydroxyl functionality in a range of 2.3 to 2.85 hydroxyl functionalities per molecule as determined using ASTM D4274-11 (method D); and where the polymeric polyol component has an effective average molecular weight in a range of 4500 and 10000 grams per mole, one or more than one type of chain extender molecule having 3 to 6 carbon atoms and 2 to 4 reactive functionalities selected from a group consisting of hydroxyl and amine functionalities per molecule, a polyisocyanate having a functionality in a range of 2.1 to 3.0 —NCO functionalities per molecule as determined by ASTM D7252-06(2011)e1; and a catalyst.

公开(公告)号：US20180215890A1

公开(公告)日：2018-08-02

申请号：US15552192

申请日：2016-04-07

Applicant: Dow Global Technologies LLC

Inventor： Van-Chau Vo ,  David J. Frankowski ,  Anson Wong ,  Stéphane Costeux

IPC: C08J9/14 ,  C08K3/04 ,  C08J9/00 ,  C08J9/12 ,  B29C44/50 ,  B29C44/34

Abstract: An extruded polymer foam has a polymer matrix with styrene-acrylonitrile copolymer and infrared attenuator and cell having an average size in the foam vertical direction of 150 micrometers or less, a ratio of vertical cell E size to extrusion direction cell size that is greater than one and a cell anisotropic ratio that is greater than 1.1; the foam having a P-Ratio of 0.7 or less, less than 0.2 moles of hydrocarbon blowing agent in the cells per kilogram of foam; a density of 20-48 kilograms per cubic meter and a 25-year thermal conductivity that is 0.030 Waters per meter-Kelvin or less when free of fluorinated blowing agents and less than 0.029 Watts per meter-Kelvin when containing fluorinated blowing agent.

公开(公告)号：US20170002162A1

公开(公告)日：2017-01-05

申请号：US15109935

申请日：2015-03-18

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Liang Chen ,  Anne M. Kelly-Rowley ,  Shana P. Bunker ,  Stéphane Costeux

IPC: C08J9/00 ,  C08J9/12

CPC classification number: C08J9/0038 ,  C08J3/215 ,  C08J3/226 ,  C08J9/0004 ,  C08J9/0061 ,  C08J9/122 ,  C08J2201/024 ,  C08J2201/032 ,  C08J2203/06 ,  C08J2203/08 ,  C08J2205/042 ,  C08J2205/044 ,  C08J2333/12 ,  C08J2433/12

Abstract: Prepare nanofoam by (a) providing an aqueous solution of a flame retardant dissolved in an aqueous solvent, wherein the flame retardant is a solid at 23° C. and 101 kiloPascals pressure when in neat form; (b) providing a fluid polymer composition selected from a solution of polymer dissolved in a water-miscible solvent or a latex of polymer particles in a continuous aqueous phase; (c) mixing the aqueous solution of flame retardant with the fluid polymer composition to form a mixture; (d) removing water and, if present, solvent from the mixture to produce a polymeric composition having less than 74 weight-percent flame retardant based on total polymeric composition weight; (e) compound the polymeric composition with a matrix polymer to form a matrix polymer composition; and (f) foam the matrix polymer composition into nanofoam having a porosity of at least 60 percent.

Abstract translation: 通过（a）提供溶解在水性溶剂中的阻燃剂的水溶液来制备纳米纤维，其中阻燃剂在23℃为固体，并且在整齐的形式下为101千帕斯卡压力; （b）提供流体聚合物组合物，其选自溶解在水混溶性溶剂中的聚合物溶液或在连续水相中的聚合物颗粒的胶乳; （c）将阻燃剂的水溶液与流体聚合物组合物混合以形成混合物; （d）从混合物中除去水和溶剂（如果存在），以产生基于总聚合物组合物重量具有小于74重量％阻燃剂的聚合物组合物; （e）将聚合物组合物与基质聚合物复合以形成基质聚合物组合物; 和（f）将基质聚合物组合物发泡成具有至少60％的孔隙率的纳米电
雾。

公开(公告)号：US20150203647A1

公开(公告)日：2015-07-23

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: C08J9/04 ,  C08J9/00

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。