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    • 2. 发明授权
    • Process for preparation of metal carbide fibers
    • 金属碳化物纤维的制备方法
    • US5429778A
    • 1995-07-04
    • US836481
    • 1992-02-18
    • Kundan M. PatelFrank MaresJoseph E. MackeyRichard S. Hatami
    • Kundan M. PatelFrank MaresJoseph E. MackeyRichard S. Hatami
    • C04B35/622D01F9/12D01D5/12
    • C04B35/62272
    • A process for forming a metal or non-metal carbide fiber comprising the steps of stabilizing a fiber comprising a carbon forming polymer and a metal or non-metal oxide or a mixture of more than 50% by weight of said oxide and a metal or non-metal to form a stabilized fiber; carbonizing the stabilized fiber to form a fiber comprising carbon and a metal or non-metal oxide or a mixture of said oxide and a metal or non-metal; reacting the carbon and metal or non-metal oxide or mixture of said oxide and metal or non-metal to form a fiber comprising a metal or non-metal carbide; and sintering the fiber comprising said metal or non-metal carbide to form a fiber having a density of greater than about 70% of the theoretical density of said metal or non-metal carbide.
    • 一种用于形成金属或非金属碳化物纤维的方法,包括以下步骤:使包含形成碳的聚合物和金属或非金属氧化物的纤维或大于50重量%的所述氧化物和金属或非金属氧化物的混合物, 金属以形成稳定的纤维; 将稳定的纤维碳化以形成包含碳和金属或非金属氧化物或所述氧化物和金属或非金属的混合物的纤维; 使碳和金属或非金属氧化物或所述氧化物和金属或非金属的混合物反应以形成包含金属或非金属碳化物的纤维; 以及烧结包含所述金属或非金属碳化物的纤维,以形成密度大于所述金属或非金属碳化物的理论密度的约70%的纤维。
    • 7. 发明授权
    • Polymeric additives and polymeric articles comprising said additive
    • 包含所述添加剂的聚合物添加剂和聚合物制品
    • US06777496B2
    • 2004-08-17
    • US09778333
    • 2001-02-07
    • Kundan M. PatelCharles Jay NelsonFrank MaresConor TwomeyYousef Mohajer
    • Kundan M. PatelCharles Jay NelsonFrank MaresConor TwomeyYousef Mohajer
    • C08L6702
    • B60C9/0042C08J3/005C08L23/02C08L67/02C08L77/00D01F6/92Y10T152/10Y10T428/249933C08L23/00
    • We have developed a process and product which provide thermoplastic articles featuring a permanent outer surface which has selectively varied chemical functionality while maintaining the inherent mechanical properties of the base fiber. The process comprises the steps of: (a) adding a substantially organic molten component with CSP value of at least 8 to a molten thermoplastic polymer and mixing to substantially uniformly disperse the molten component in the molten thermoplastic polymer and form a heterogeneous blend wherein (i) the melt viscosity of the molten component is substantially less than the melt viscosity of the molten thermoplastic polymer; and (ii) the amount of the molten component in the molten thermoplastic polymer is up to about ten percent by weight based on the heterogeneous blend; and (b) melt processing the heterogeneous blend wherein the molten component preferentially locates near the surface of the molten thermoplastic polymer and substantially no chemical reaction occurs between the molten component and the molten thermoplastic polymer.
    • 我们开发了一种工艺和产品,其提供具有永久性外表面的热塑性制品,其具有选择性变化的化学功能,同时保持基础纤维的固有机械性能。 该方法包括以下步骤:(a)将CSP值至少为8的基本上有机的熔融组分加入到熔融的热塑性聚合物中并混合以使熔融组分基本均匀地分散在熔融的热塑性聚合物中并形成非均相共混物,其中(i )熔融组分的熔体粘度基本上小于熔融热塑性聚合物的熔体粘度; 和(ii)熔融热塑性聚合物中的熔融组分的量基于异质混合物高达约10重量%; 和(b)熔融加工非均相共混物,其中熔融组分优选位于熔融热塑性聚合物的表面附近,并且在熔融组分和熔融热塑性聚合物之间基本上不发生化学反应。