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    • 8. 发明授权
    • Elastomeric polymers
    • 弹性聚合物
    • US07420025B2
    • 2008-09-02
    • US10718764
    • 2003-11-21
    • Kenneth B. WagenerJohn C. SworenHector F. ZuluagaPiotr Matloka
    • Kenneth B. WagenerJohn C. SworenHector F. ZuluagaPiotr Matloka
    • C08G77/60
    • C08G77/60C07F7/1804C08G77/50
    • Acyclic diene metathesis (ADMET) has been utilized in the synthesis of carbosilane and carbosiloxane polymers bearing a latent reactive methoxy-functional group on each repeat unit. The polymerization results in a linear thermoplastic polymer. The latent reactive methoxy groups remain inert during polymerization; however, exposure to moisture triggers hydrolysis and the formation of a chemically cross-linked thermoset. The thermoset's properties can be modified by varying the ratio of carbosilane and carbosiloxane repeat units in the final material. Also, increasing cross-link density by using cross-linkable chain-end groups and increasing the run length of the soft phase, maximizing phase separation and elasticity, allows for the synthesis of elastic thermosets exhibiting good tensile strength. Adding a trifunctional ADMET active chain-end cross-linker to the system improved the mechanical behavior of the resulting polymer.
    • 非环二烯复分解(ADMET)已被用于合成在每个重复单元上带有潜在的反应性甲氧基官能团的碳硅烷和碳硅氧烷聚合物。 聚合导致线性热塑性聚合物。 潜在的反应性甲氧基在聚合过程中保持惰性; 然而,暴露于水分会触发水解和形成化学交联的热固性材料。 可以通过改变最终材料中碳硅烷和碳硅氧烷重复单元的比例来改变热固性质。 此外,通过使用可交联的链端基团增加交联密度并增加软相的游程长度,使相分离和弹性最大化,允许合成显示出良好拉伸强度的弹性热固性材料。 向系统中加入三官能的ADMET活性链端交联剂改善了所得聚合物的机械性能。
    • 10. 发明授权
    • Polycarbometallane
    • 聚甲基汞
    • US06545110B2
    • 2003-04-08
    • US10026025
    • 2001-12-21
    • Kirk J. AbbeyFernando J. GomezKenneth B. Wagener
    • Kirk J. AbbeyFernando J. GomezKenneth B. Wagener
    • C08F3004
    • C08G61/12C07F7/2208C08G79/00C08G79/12
    • A polymer having a backbone repeat unit that includes at least two metal atoms bonded to each other and only one ethylenically unsaturated functional group wherein the backbone unit preferably has a structure of —C(R3)═C(R3)—[C(R3)(R4)]n—[M(R1)(R2)]a—[C(R3)(R4)]p— wherein n is 0 to 4; a is at least 2; p is 0 to 4; R1 and R2 are each independently selected from hydrogen, halogen, lower alkyl having 4 or fewer carbon atoms, alkenyl having 4 or fewer carbon atoms, or aromatic having one ring; R3 and R4 are each independently selected from hydrogen and lower alkyl having 1 to 4 carbon atoms; and M is a metal atom selected from at least one of Sn, Ge, Pb, Hg, Ni, Pd, Pt, Cr, Fe, Co, Cu and Zn. The polymer has at least 20 weight percent metal, preferably at least 50 weight percent metal, based on the weight of the polymer.
    • 具有骨架重复单元的聚合物,其包含彼此键合的至少两个金属原子和仅一个烯属不饱和官能团,其中所述主链单元优选具有其中n为n至4的结构; a至少为2; p为0〜4; R 1和R 2各自独立地选自氢,卤素,具有4个或更少碳原子的低级烷基,具有4个或更少碳原子的烯基或具有一个环的芳族; R 3和R 4各自独立地选自氢和具有1至4个碳原子的低级烷基; M是选自Sn,Ge,Pb,Hg,Ni,Pd,Pt,Cr,Fe,Co,Cu和Zn中的至少一种的金属原子。 基于聚合物的重量,聚合物具有至少20重量%的金属,优选至少50重量%的金属。