Continuous production process of high-strength and high-modulus
polyolefin material
    3.
    发明授权
    Continuous production process of high-strength and high-modulus polyolefin material 失效
    高强度和高模量聚烯烃材料的连续生产工艺

    公开(公告)号:US5091133A

    公开(公告)日:1992-02-25

    申请号:US451788

    申请日:1989-12-18

    IPC分类号: B29C43/22 C08L23/06

    摘要: A high-strength and high-modulus polyolefin material can be continuously produced from a polyolefin in a powder form by feeding the polyolefin powder between a combination of endless belts disposed in an up-and-down opposing relation, compression-molding the polyolefin powder at a temperature lower than the melting point of the polyolefin powder by means of a pressing device while holding the polyolefin powder between the endless belts and conveying the same, and then rolling and stretching the resultant compression-molded polyolefin. The pressing device is constructed of pressing platens and corresponding sets of rollers, which are all accommodated within the respective endless belts. The rollers in each set are connected together, and the sets of rollers are arranged movably in an endless fashion between the respective platens and the endless belts associated therewith.

    Thermoplastic elastomer compositions
    4.
    发明授权
    Thermoplastic elastomer compositions 失效
    热塑性弹性体组合物

    公开(公告)号:US4895903A

    公开(公告)日:1990-01-23

    申请号:US185109

    申请日:1988-04-22

    摘要: A thermoplastic elastomer composition prepared by crosslinking a composition comprising the following components (A), (B) and (C) by using a phenolic curing agent:(A) 30-70 parts by weight of an ethylene/.alpha.-olefin copolymer prepared by copolymerizing ethylene and an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid component and an organoaluminum compound which solid component contains at least magnesium and titanium, said ethylene/.alpha.-olefin copolymer having the following properties (I) to (IV):______________________________________ (I) Melt index 0.01-100 g/10 min (II) Density 0.860-0.910 g/cm.sup.3 (III) Maximum peak temperature as measured according to a not lower than 100.degree. C. differential scanning calorimetry (DSC) (IV) Insolubles in boiling n-hexane not less than 10 wt. % ______________________________________ (B) 70-30 parts by weight of a propylene polymer; and(C) 70-150 parts by weight, based on 100 parts by weight of the components (A) and (B), of an ethylene/.alpha.-olefin/non-conjugated diene copolymer rubber.

    摘要翻译: 通过使用酚类固化剂将包含以下组分(A),(B)和(C)的组合物交联制备的热塑性弹性体组合物:(A)30-70重量份由乙烯/α-烯烃共聚物制备的乙烯/α-烯烃共聚物 在包含固体组分和固体组分至少含有镁和钛的有机铝化合物的催化剂存在下,使乙烯和具有3至12个碳原子的α-烯烃共聚,所述乙烯/α-烯烃共聚物具有以下性质(I )至(IV): - (I)熔体指数0.01-100g / 10分钟 - (II)密度0.860-0.910g / cm 3 - (III)测量的最大峰 - 温度 - 不低于100℃ - 差示扫描量热法(DSC) - (IV)沸点正己烷中不溶于10重量% % - (B)70-30重量份丙烯聚合物; 和(C)基于100重量份组分(A)和(B))的70-150重量份的乙烯/α-烯烃/非共轭二烯共聚物橡胶。

    Laminate
    6.
    发明授权
    Laminate 失效
    层压板

    公开(公告)号:US5445883A

    公开(公告)日:1995-08-29

    申请号:US272629

    申请日:1994-07-11

    IPC分类号: B32B27/32 C09J7/02

    摘要: An anisotropy-free laminate having much higher strength and stiffness as compared with conventional articles is here disclosed which can be prepared by laminating an orientated ultra-high-molecular-weight polyethylene onto an adhesive layer obtained by modifying an olefin polymer with an unsaturated carboxylic acid and/or its derivative at a temperature lower than the melting point of the orientated ultra-high-molecular-weight polyethylene. The anisotropy-free material having high strength and high stiffness of the present invention can be substituted for various materials such as metals, lumber and FRP, and is also lightweight and excellent in water resistance.

    摘要翻译: 这里公开了与常规制品相比具有高得多的强度和刚度的无向异性层压材料,其可以通过将取向的超高分子量聚乙烯层压到通过用不饱和羧酸改性烯烃聚合物获得的粘合剂层上来制备 和/或其衍生物在低于取向的超高分子量聚乙烯的熔点的温度下进行。 本发明的具有高强度和高硬度的各向异性材料可以代替金属,木材和FRP等各种材料,并且重量轻且耐水性优异。

    Thermoplastic elastomer composition
    7.
    发明授权
    Thermoplastic elastomer composition 失效
    热塑性弹性体组合物

    公开(公告)号:US4722973A

    公开(公告)日:1988-02-02

    申请号:US847430

    申请日:1986-04-02

    IPC分类号: C08L23/16 C08L23/18

    摘要: This invention provides a thermoplastic elastomer composition obtained by blending (A) a hard segment comprising a low-density ethylene-.alpha.-olefin copolymer formed by copolymerizing ethylene with an .alpha.-olefin by the use of a specific catalyst and characterized by specifically defined properties and (B) a soft segment comprising an ethylene-.alpha.-olefin copolymer rubber, or obtained by partial cross-linking of the resulting blend.This elastomer composition has characteristic features such as high flexibility, good fluidity, excellent tensile properties, good thermal resistance and oil resistance and low permanent strain.

    摘要翻译: 本发明提供一种热塑性弹性体组合物,其通过将(A)包含通过使用特定催化剂将乙烯与α-烯烃共聚而形成的低密度乙烯-α-烯烃共聚物的硬链段并且特征在于具体限定的性质和 (B)包含乙烯-α-烯烃共聚物橡胶的软链段,或通过所得共混物的部分交联获得。 该弹性体组合物具有柔软性高,流动性好,拉伸性能优异,耐热性好,耐油性好,永久变形小的特征。

    Process for continuous production of polyolefin material
    9.
    发明授权
    Process for continuous production of polyolefin material 失效
    连续生产聚烯烃材料的工艺

    公开(公告)号:US5200129A

    公开(公告)日:1993-04-06

    申请号:US687501

    申请日:1991-04-19

    摘要: According to the present invention, a polyolefin sheet, film or fiber having a high strength and a high modulus can be continuously produced by:feeding an ultra-high-molecular-weight polyolefin powder between a pair of upper and lower endless belts opposed to each other,conveying the polyolefin powder between the endless belts under compression to compression-mold the polyolefin powder at a temperature lower than the melting point of the polyolefin powder, the compression being continuously and smoothly effected, via the endless belts, by a pressing means comprising two sets of rollers which are arranged at the back sides of the endless belts so that each one roller of the two roller sets faces each other and each of which rollers is rotatably supported at the shaft ends by a frame, and thenrolling and stretching the resultant compression-molded polyolefin in this order.