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    • 2. 发明申请
    • THERMOPLASTIC SILICONE POLYAMIDE ELASTOMERS
    • 热塑性聚硅氧烷弹性体
    • WO0172903A3
    • 2002-02-14
    • PCT/US0108959
    • 2001-03-21
    • DOW CORNINGDOW CORNING ASIA LTD
    • CHORVATH IGORLEE MICHAELLI DAWEINAKANISHI KOJILEE YONGJUNOLDINSKI ROBERT LRABE RICHARD LROMENESKO DAVID JSAGE JEFFREY P
    • C08J3/24C08K5/13C08K5/541C08L77/00C08L83/04C08L83/07
    • C08L83/04C08G77/12C08G77/20C08G77/44Y10S525/903C08L2666/14C08L2666/28
    • A method for preparing a thermoplastic elastomer is disclosed, said method comprising (I) mixing (A) a rheologically stable polyamide resin having a melting point or glass transition temperature of 25 DEG C to 275 DEG C, (B) a silicone base comprising (B') 100 parts by weight of a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl radicals in its molecule and (B'') 5 to 200 parts by weight of a reinforcing filler, the weight ratio of said silicone base to said polyamide resin being greater than 35:65 to 85:15, (C) 0.1 to 5 parts by weight of a hindered phenol compound for each 100 parts by weight of said polyamide and said silicone base, (D) an organohydrido silicon compound which contains an average of at least 2 siliconbonded hydrogen groups in its molecule and (E) a hydrosilation catalyst, components (D) and (E) being present in an amount sufficient to cure said diorganopolysiloxane (B'); and (II) dynamically curing said diorganopolysiloxane (B'), wherein at least one property of the thermoplastic elastomer selected from tensile strength or elongation is at least 25 % greater than the respective property for a corresponding simple blend wherein said diorganopolysiloxane is not cured and said thermoplastic elastomer has an elongation of at least 25 %.
    • 公开了一种制备热塑性弹性体的方法,所述方法包括(I)混合(A)熔点或玻璃化转变温度为25℃至275℃的流变学稳定的聚酰胺树脂,(B)包含( B')100重量份的塑性为至少30的二有机聚硅氧烷胶,其分子中平均具有至少2个烯基,(B“)5至200重量份的增强填料,重量 所述硅氧烷基与所述聚酰胺树脂的比例大于35:65至85:15,(C)每100重量份所述聚酰胺和所述硅氧烷基(D)为0.1至5重量份的受阻酚化合物 )在其分子中平均含有至少2个硅键合氢基团的有机氢化硅化合物和(E)氢化硅烷化催化剂,组分(D)和(E)以足以固化所述二有机聚硅氧烷(B')的量存在; 和(II)动态固化所述二有机聚硅氧烷(B'),其中选自拉伸强度或伸长率的热塑性弹性体的至少一种性能比相应的简单混合物的相应性能大至少25%,其中所述二有机聚硅氧烷不固化, 所述热塑性弹性体的伸长率至少为25%。
    • 7. 发明申请
    • PROCESS FOR MAKING POLYMERIC INORGANIC-ORGANIC COMPOSITIONS
    • 制备聚合无机有机组合物的方法
    • WO1994007947A1
    • 1994-04-14
    • PCT/US1993008853
    • 1993-09-23
    • E.I. DU PONT DE NEMOURS AND COMPANY
    • E.I. DU PONT DE NEMOURS AND COMPANYSHARP, Kenneth, George
    • C08K05/04
    • C08K5/09C08K5/057Y10S525/903
    • Polymeric inorganic-organic compositions are obtained by intimately mixing a hydrolyzable precursor of an inorganic gel of silicon, titanium, or zirconium with an organic polymer and with an organic carboxylic acid having a pKa value of at most 4.0, present in an amount of at least 2 moles per mole of inorganic component, under conditions such that a homogeneous solution of all three components is initially formed, agitating the solution at 0-100 C until gelation of the inorganic component occurs, and recovering the inorganic-organic composition. Water need not be present as an initial reactant. Such compositions often are transparent, always have improved toughness, as compared with inorganic gels alone, and are believed to have a structure in which the organic polymer is entrapped in the inorganic gel in such an intimate manner that these two components cannot be separated from each other by physical means without destruction of the organic polymer.
    • 通过将硅,钛或锆的无机凝胶的可水解前体与有机聚合物和pKa值至多为4.0的有机羧酸紧密混合,得到聚合无机 - 有机组合物,其量至少为 在最初形成所有三种组分的均匀溶液的条件下,每摩尔无机组分2摩尔,在0-100℃下搅拌该溶液直至发生无机组分的凝胶化,并回收无机 - 有机组合物。 水不需要作为初始反应物存在。 与单独的无机凝胶相比,这种组合物通常是透明的,总是具有改善的韧性,并且被认为具有这样的结构,其中有机聚合物以这样一种紧密的方式被截留在无机凝胶中,使得这两个组分不能从每个 其他物理手段而不破坏有机聚合物。