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    • 2. 发明授权
    • Process for polymerization of olefins
    • 烯烃聚合方法
    • US06956002B2
    • 2005-10-18
    • US10492907
    • 2002-10-15
    • Takashi NozakiAkio Fujiwara
    • Takashi NozakiAkio Fujiwara
    • C08F4/618C08F4/659C08F4/6592C08F10/00C08F210/16C08F4/622C08F4/642
    • C08F210/16C08F4/65916C08F4/6592C08F4/65925C08F4/65927C08F10/00Y10S526/943C08F4/6555C08F4/65912C08F4/65908C08F210/14C08F2500/24C08F2500/18C08F4/7006
    • A catalyst for olefin polymerization, comprising: a solid catalyst component comprising [A] a solid component having substantially no hydroxyl group, [B] a compound of a transition metal selected from Groups 3-11 of the Periodic Table, and [C] a mixture of an activator compound (C-1) capable of reacting with the transition metal compound [B] to form a metal complex having catalytic activity and an organoaluminum compound (C-2); and [D] an organomagnesium compound soluble in a hydrocarbon solvent which is obtained by reacting (i) an organomagnesium compound represented by the general formula: (Mt)α(Mg)β(R1)a(R2)b wherein Mt is a metal atom belonging to Groups 1-3 of the Periodic Table, R1 and R2 are hydrocarbon groups of 2-20 carbon atoms, and α, β, a and b are numerals satisfying the following relationship: 0≦α, 0 0, and rα+2β=a+b (where r is a valence of Mt) with (ii) a compound selected from an amine, an alcohol and a siloxane.
    • 一种用于烯烃聚合的催化剂,包括:固体催化剂组分,其包含[A]基本上不含羟基的固体组分,[B]选自周期表第3-11族的过渡金属的化合物和[C] a 能够与过渡金属化合物[B]反应形成具有催化活性的金属络合物的活化剂化合物(C-1)和有机铝化合物(C-2)的混合物; 和[D]可溶于烃溶剂的有机镁化合物,其通过使(i)由以下通式表示的有机镁化合物:<?in-line-formula description =“In-line Formulas”end =“lead” (Mt)α(α)(Mg)β(α1)a(R 2) 其中,Mt是属于元素周期表第1-3组的金属原子,其中,Mt是属于元素周期表第1-3组的金属原子, R 1和R 2是2-20个碳原子的烃基,α,β,a和b是满足以下关系的数字:0≤α,0 (ⅱ)选自胺,醇和(Ⅵ)化合物的化合物,其中r为缬氨酸价) 硅氧烷。
    • 3. 发明申请
    • Ultra High Molecular Weight Ethylene Copolymer Powder
    • 超高分子量乙烯共聚物粉末
    • US20080071031A1
    • 2008-03-20
    • US11793378
    • 2005-12-28
    • Akio FujiwaraKoichi Hasebe
    • Akio FujiwaraKoichi Hasebe
    • C08F8/00
    • C08F210/18C08F10/00C08F210/16C08F4/6555C08F210/08C08F2500/01C08F2500/17C08F2500/08C08F2500/18C08F2500/25
    • The present invention relates to an ultrahigh-molecular-weight ethylene copolymer powder having an intrinsic viscosity (η) of 10 dl/g to 34 dl/g, obtainable by copolymerizing ethylene and at least one olefin selected from the group consisting of α-olefins having 3 to 20 carbon atoms, cyclic olefins having 3 to 20 carbon atoms, compounds represented by the formula CH2═CHR1 wherein R1 is an aryl group having 6 to 20 carbon atoms, and linear, branched or cyclic dienes having 4 to 20 carbon atoms, wherein (1) a molded article of the copolymer powder has a haze of from 30% to 80% and (2) the copolymer powder has a bulk density of from 0.35 g/cm3 to 0.60 g/cm3. According to the invention, there can be provided an ultrahigh-molecular-weight ethylene copolymer powder which is excellent in balance of abrasion properties, physical properties, and moldability and also excellent in transparency and flexibility as compared with conventional ultrahigh-molecular-weight polyethylene and which has a high bulk density.
    • 本发明涉及一种超高分子量乙烯共聚物粉末,其特性粘度(η)为10dl / g至34dl / g,可通过使乙烯和至少一种选自下组的烯烃共聚获得:α-烯烃 具有3至20个碳原子,具有3至20个碳原子的环烯烃,由式CH 2 -CHR 1表示的化合物,其中R 1, 是碳原子数6〜20的芳基和碳原子数4〜20的直链状,支链状或环状的二烯,其中,(1)共聚物粉末的成型体的雾度为30〜80%,(2) 共聚物粉末的堆积密度为0.35g / cm 3至0.60g / cm 3。 根据本发明,可以提供与常规超高分子量聚乙烯相比,其耐磨性,物理性能和成型性的平衡优异,透明性和柔软性优异的超高分子量乙烯共聚物粉末, 其堆积密度高。
    • 5. 发明授权
    • Process for producing organic silicon-terminated polyimide precursor and
polyimide
    • 有机硅封端聚酰亚胺前体和聚酰亚胺的制备方法
    • US4748228A
    • 1988-05-31
    • US863241
    • 1986-05-14
    • Fusaji ShojiHaruhiko MatsuyamaAkio FujiwaraFumio KataokaTeruji Aizawa
    • Fusaji ShojiHaruhiko MatsuyamaAkio FujiwaraFumio KataokaTeruji Aizawa
    • C08G73/00C08G73/10C08G77/00
    • C08G73/1017
    • An organic silicon-terminated polyimide precursor having a very stable solution viscosity is produced by polycondensing 100 parts by weight of a mixture composed of 90 to 99.5% by mole of an organic diamine represented by the following general formula (I) and 10 to 0.5% by weight by mole of an organic silyl represented by the following general formula (II): ##STR1## wherein R.sup.1 and R.sup.2 are divalent organic groups; R.sup.3 and R.sup.4 are monovalent organic groups; m is 0, 1, 2, or 3, with an organic tetracarboxylic acid dianhydride represented by the following general formula (III) in a molar amount corresponding to the 100 parts by weight of the mixture of the organic diamine and the organic silyl represented by the said general formulae (I) and (II), respectively, in an organic polar solvent at 0.degree. to 40.degree. C., thereby obtaining a solution of organic silicon-terminated polyimide precursor, and heating the solution at 50.degree. to 80.degree. C.: ##STR2## wherein R.sup.5 is a tetravelent organic group. The polyimide having good adhesion and mechanical characteristics is obtained by further heating the precursor solution at 100.degree. to 450.degree. C.
    • 通过将100重量份由以下通式(I)表示的有机二胺和90至99.5摩尔%的由下列通式(I)表示的混合物和10至0.5重量%的混合物进行缩聚来制备具有非常稳定的溶液粘度的有机硅封端的聚酰亚胺前体, (II)表示的有机甲硅烷基:其中R 1和R 2是二价有机基团;其中R 1和R 2是二价有机基团; R3和R4是一价有机基团; m为0,1,2或3,与由以下通式(III)表示的有机四羧酸二酐的摩尔量相当于有机二胺和有机甲硅烷基的混合物的100重量份,由 所述通式(I)和(II)分别在有机极性溶剂中在0至40℃下进行,从而获得有机硅封端的聚酰亚胺前体溶液,并在50℃至80℃下加热该溶液 (III)其中R5是四价有机基团。 通过在100〜450℃下进一步加热前体溶液得到具有良好粘附性和机械特性的聚酰亚胺
    • 6. 发明授权
    • Olefin polymerizaion catalyst and method for polymerizing an olefin using the catalyst
    • 烯烃聚合催化剂和使用该催化剂聚合烯烃的方法
    • US06812303B1
    • 2004-11-02
    • US09569579
    • 2000-05-10
    • Fumio MatsushitaAkio Fujiwara
    • Fumio MatsushitaAkio Fujiwara
    • C08F464
    • C08F210/16C08F4/65908C08F4/65912C08F4/6592C08F4/65916C08F210/08C08F2500/18C08F210/14
    • A novel olefin polymerization catalyst comprising: (A) a transition metal compound comprising a transition metal having &eegr;-bonded thereto a cyclic anionic ligand; (B) a mixture of (B-1) an activator compound capable of forming, together with component (A), a metal complex having a catalytic activity and (B-2) an organometal compound, the activator compound (B-1) comprising a cation and a noncoordinating, compatible anion; (C) a solid component; and optionally (D) an organoaluminum compound, wherein the catalyst is obtained by contacting components (A) to (C) and optionally component (D). The olefin polymerization catalyst of the present invention is advantageous not only in that it has high polymerization activity, but also in that an olefin polymer having excellent powder characteristics can be efficiently produced by suspension polymerization (slurry polymerization) or gaseous phase polymerization in a continuous manner, using a commercial scale plant, while preventing the occurrence of adherence of the polymer to the inside surfaces associated with a polymerizer.
    • 一种新型烯烃聚合催化剂,其包含:(A)包含与其结合的环状阴离子配体的过渡金属的过渡金属化合物; (B)与(A)成分的活化剂化合物(B-1),具有催化活性的金属络合物和(B-2)有机金属化合物的混合物,活化剂化合物(B-1) 包括阳离子和非配位的相容阴离子; (C)固体成分; 和任选的(D)有机铝化合物,其中催化剂通过使组分(A)与(C)和任选的组分(D)接触而获得。 本发明的烯烃聚合催化剂不仅具有高聚合活性的优点,而且通过悬浮聚合(淤浆聚合)或气相聚合连续地有效地制备具有优异粉末特性的烯烃聚合物 ,同时防止聚合物粘附到与聚合反应器相关的内表面。
    • 9. 发明授权
    • Method for hardening steel pipes
    • 钢管硬化方法
    • US4056412A
    • 1977-11-01
    • US612927
    • 1975-09-12
    • Yoshihisa FujiiAkio Fujiwara
    • Yoshihisa FujiiAkio Fujiwara
    • C21D1/667C21D9/08
    • C21D9/085C21D1/667
    • This invention relates to a method wherein the setting angles of cooling water jetting orifices an outer quenching head and an inner quenching head are made 30.degree..+-.10.degree. in the pipe advancing direction with the pipe axis and the number of jetting orifices of the inner quenching head are greater for purposes of higher density for the front one-third of the length of the head and lower for purposes of lower density for the rear two-thirds of the length of the head.Further, the first contact point of inner quenching water within the inner surface of the pipe is so set as to be delayed by 20 to 150mm. from the first contact point of quenching water with the outer surface of the pipe, the outer quenching being carried out when the steel pipe heating temperature is above the A.sub.3 transformation point and the inner quenching is carried out when the temperature of the inner surface of the pipe is just below the A.sub.1 transformation point.As both heads have a fixed angle, water or steam will not enter the unquenched part and the quenching velocity and the hardness of the cross-section of the steel pipe will be improved.