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    • 2. 发明申请
    • POLYMERIC NANOFOAM
    • 聚合纳米粉体
    • WO2013048761A2
    • 2013-04-04
    • PCT/US2012055263
    • 2012-09-14
    • DOW GLOBAL TECHNOLOGIES LLCCOSTEUX STEPHANEBUNKER SHANA PJEON HYUN KJOG PRASANNA K
    • COSTEUX STEPHANEBUNKER SHANA PJEON HYUN KJOG PRASANNA K
    • B32B5/32
    • C08L33/20B32B5/32C08J9/0061C08J9/122C08J2203/06C08J2333/06C08J2425/12C08J2455/02C08L33/10
    • A polymeric nanofoam has a continuous polymer phase containing at least one (meth)acrylic-free acrylonitrile-containing copolymer and at least one (meth)acrylic polymer where the concentration of (meth)acrylic polymer is in a range of 5-90 weight-percent of the total continuous polymer phase while the amount of methacrylic copolymer is 50 weight-percent or less of the total continuous polymer phase; the polymeric foam having a porosity of at least 50%, an absence of nano-sized nucleating additives and at least one of the following: (a) a number average cell size of 500 nanometers or less; and (b) an effective nucleation site density of at least 1 x 1014 sites per cubic centimeter of prefoamed material. The total weight of copolymerized acrylonitrile is in a range of 3-28 weight-percent based on total continuous polymer phase weight. At least one (meth)acrylic-free acrylonitrile-containing copolymer has a higher glass transition temperature than all of the (meth)acrylic polymers.
    • 聚合物纳米纤维具有包含至少一种(甲基)丙烯酸 - 丙烯腈共聚物和至少一种(甲基)丙烯酸类聚合物的连续聚合物相,其中(甲基)丙烯酸聚合物的浓度在5-90重量% 的总连续聚合物相的百分比,而甲基丙烯酸共聚物的量为总连续聚合物相的50重量%或更少; 所述聚合物泡沫具有至少50%的孔隙率,不存在纳米尺寸的成核添加剂和以下至少一种:(a)500纳米或更小的数均孔数; 和(b)有效的成核位点密度为每立方厘米预发泡材料至少1×1014个位点。 基于总连续聚合物相重量,共聚丙烯腈的总重量在3-28重量%的范围内。 至少一种(甲基)丙烯酸 - 含丙烯腈的共聚物具有比所有(甲基)丙烯酸聚合物更高的玻璃化转变温度。
    • 4. 发明申请
    • CROSSLINKED POLYETHYLENE ELASTIC FIBERS
    • 交联聚乙烯弹性纤维
    • WO2007097916B1
    • 2008-09-12
    • PCT/US2007003297
    • 2007-02-07
    • DOW GLOBAL TECHNOLOGIES INCLAI SHIH-YAWCHIU YUEN-YUEN DSEN ASHISHCOSTEUX STEPHANE
    • LAI SHIH-YAWCHIU YUEN-YUEN DSEN ASHISHCOSTEUX STEPHANE
    • D01F6/46D01F8/06
    • D01F6/46D01F8/06
    • The present invention relates to crosslinked, olefin elastic fibers where the olefin materials are specifically selected to provide a more robust fiber with higher tenacity and greater temperature stability. Such fibers will be less subject to breakage during fiber spinning and post-spinning (downstream processing) operations including spool formation and unwinding. The specific olefin material used is a blend having an overall melt index (I2) of less than 2.5 g/10 min before crosslinking with a density in the range of 0.865 to 0.885 g/cm 3 . One component of the blend will be characterized as having either a density in the range of from 0.855 to 0.88 g/cm 3 or a residual crystallinity at 80 °C of greater than 9 percent but not both. The at least one other component will meet at least whichever characteristic the first component does not meet.
    • 本发明涉及交联的烯烃弹性纤维,其中特别选择烯烃材料以提供具有更高韧度和更高温度稳定性的更坚固的纤维。 这种纤维在纤维纺丝和纺丝后(下游加工)操作(包括线轴形成和退绕)期间将不易破损。 所使用的具体烯烃材料是在交联之前具有小于2.5g / 10min的总体熔体指数(I 2)的共混物,密度范围为0.865-0.885g / cm 3。 共混物的一个组分将被表征为具有在0.855至0.88g / cm 3的范围内的密度或在80℃下大于9%但不是两者的残余结晶度。 该至少一个其他部件将至少满足第一部件不符合的任何特征。
    • 6. 发明申请
    • CROSSLINKED POLYETHYLENE ELASTIC FIBERS
    • 交联聚乙烯弹性纤维
    • WO2007097916A3
    • 2008-04-10
    • PCT/US2007003297
    • 2007-02-07
    • DOW GLOBAL TECHNOLOGIES INCLAI SHIH-YAWCHIU YUEN-YUEN DSEN ASHISHCOSTEUX STEPHANE
    • LAI SHIH-YAWCHIU YUEN-YUEN DSEN ASHISHCOSTEUX STEPHANE
    • D01F6/46D01F8/06
    • D01F6/46D01F8/06
    • The present invention relates to crosslinked, olefin elastic fibers where the olefin materials are specifically selected to provide a more robust fiber with higher tenacity and greater temperature stability. Such fibers will be less subject to breakage during fiber spinning and post-spinning (downstream processing) operations including spool formation and unwinding. The specific olefin material used is a blend having an overall melt index (I2) of less than 2.5 g/10 min before crosslinking with a density in the range of 0.865 to 0.885 g/cm 3 . One component of the blend will be characterized as having either a density in the range of from 0.855 to 0.88 g/cm 3 or a residual crystallinity at 80 °C of greater than 9 percent but not both. The at least one other component will meet at least whichever characteristic the first component does not meet.
    • 本发明涉及交联的烯烃弹性纤维,其中烯烃材料被特别选择以提供具有更高韧性和更高温度稳定性的更坚固的纤维。 在纤维纺丝和后纺(下游处理)操作中,这种纤维将不会发生断裂,包括卷筒的形成和展开。 使用的特定烯烃材料是在0.865至0.885g / cm 3范围内的密度交联之前具有小于2.5g / 10min的总体熔体指数(I 2)的共混物。 共混物的一种组分将被表征为具有在0.855至0.88g / cm 3范围内的密度或在80℃下的残余结晶度大于9%,但不是均为二者。 至少一个其他组件将至少满足第一个组件不符合的特征。