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    • 3. 发明授权
    • Ultra-high-molecular-weight polyethylene solution
    • 超高分子量聚乙烯溶液
    • US4767819A
    • 1988-08-30
    • US70545
    • 1987-07-07
    • Shigeki YokoyamaMichiaki ToriiKazuo MatsuuraAkira Sano
    • Shigeki YokoyamaMichiaki ToriiKazuo MatsuuraAkira Sano
    • C08L23/04C08J3/09C08L23/00C08L91/00C10G67/06D01F6/04C08L23/06
    • D01D1/02C08J3/092C10G67/06D01F6/04C08J2323/06
    • The present invention provides an ultra-high-molecular-weight polyethylene solution which is produced by the steps of subjecting a kerosene fraction having a boiling point of 160.degree. to 300.degree. C. to a nucleus hydrogenation treatment at a pressure of 30 to 100 kg/cm.sup.2 at a temperature of 100.degree. to 300.degree. C. in the presence of a metallic catalyst for nucleus hydrogenation of aromatic nuclei; separating and removing at least a part of n-paraffins present in the kerosene therefrom by the use of a molecular sieve made up of a synthesized zeolite in order to obtain a residual oil; fractionating the latter by a rectification apparatus to obtain a hydrocarbon mixture fraction which has a boiling point of 180.degree. to 250.degree. C. and which is substantially free from naphthalene and biphenyl; and dissolving, in the hydrocarbon mixture fraction, an ultra-high-molecular-weight polyethylene having an intrinsic viscosity of 8 or more in decalin at 135.degree. C.
    • 本发明提供了一种超高分子量聚乙烯溶液,其通过以下步骤制备:使沸点为160〜300℃的煤油馏分在30〜100kg的压力下进行核氢化处理 在金属催化剂存在下,在100〜300℃的温度下,芳族核的核氢化; 通过使用由合成沸石构成的分子筛分离和除去存在于煤油中的至少一部分正链烷烃,以获得残油; 通过精馏装置对后者进行分馏,得到沸点为180-250℃,基本上不含萘和联苯的烃混合物馏分; 并在烃混合物馏分中,在135℃下在十氢化萘中溶解特性粘度为8以上的超高分子量聚乙烯。
    • 9. 发明授权
    • Olefin polymerization catalyst and process for preparing polyolefins
    • 烯烃聚合催化剂和制备聚烯烃的方法
    • US6077804A
    • 2000-06-20
    • US858120
    • 1997-05-19
    • Yoshio TajimaNaoki KataokaAkira SanoKazuo Matsuura
    • Yoshio TajimaNaoki KataokaAkira SanoKazuo Matsuura
    • C08F4/642C08F4/60C08F4/652C08F4/658C08F4/659C08F4/6592C08F10/00
    • C08F10/00C08F4/65904C08F4/65912C08F4/65916C08F4/6592
    • According to the present invention, there are provided a catalyst and a process for the preparation of polyolefins having a relatively wide molecular weight distribution, good particle properties, a narrow composition distribution in copolymerization and a high molecular weight and being less sticky. The catalyst is prepared by contacting the following constituents (1) to (4) with one another:(1) a compound represented by the general formula Me.sup.1 R.sup.1.sub.p (OR.sup.2).sub.q X.sub.4-p-q, where Me.sup.1 is Zr, Ti or Hf, R.sup.1 and R.sup.2 are each independently a hydrocarbon group having 1 to 24 carbon atoms, X is a halogen atom, p and q are each an integer in the ranges of 0.ltoreq.p.ltoreq.4 and 0.ltoreq.q.ltoreq.4 , provided 0.ltoreq.p+q.ltoreq.4;(2) a compound represented by the general formula Me.sup.2 R.sup.3.sub.m (OR.sup.4).sub.n X.sup.2.sub.z-m-n, where Me.sup.2 is a Group I-III element in the Periodic Table, R.sup.3 and R.sup.4 are each independently a hydrocarbon group having 1 to 24 carbon atoms, X.sup.2 is a halogen atom or a hydrogen atom, provided when X.sup.2 is a hydrogen atom, Me.sup.2 is a Group III element in the Periodic Table, z is the valence of Me.sup.2, m and n are each an integer in the ranges of 0.ltoreq.m.ltoreq.z, and 0.ltoreq.n.ltoreq.z, provided 0.ltoreq.m+n.ltoreq.z;(3) an organocyclic compound having conjugated double bonds; and(4) a modified organoaluminum compound containing Al--O--Al bond, and thereafter contacting the resulting contact reaction product with the following component (5):(5) an inorganic carrier and/or a particulate polymer carrier.
    • 根据本发明,提供了一种催化剂和制备具有较宽分子量分布,良好的颗粒性能,窄的共聚合成分布和高分子量且不易粘的聚烯烃的方法。 通过使下述成分(1)〜(4)彼此接触来制备催化剂:(1)由通式Me1R1p(OR2)qX4-pq表示的化合物,其中Me1为Zr,Ti或Hf,R1和R2 各自独立地为具有1〜24个碳原子的烃基,X为卤素原子,p和q各自为0≤p≤4且0≤q≤4的整数, 提供0