公开(公告)号：JPH069736A

公开(公告)日：1994-01-18

申请号：JP20418992

申请日：1992-06-23

Applicant: UBE INDUSTRIES

Inventor： TAMURA MASANORI ,  IMAOKA KOJI ,  SUZUKI KAZUTAKA ,  YAMADA SHINICHIRO

IPC: C08F4/642 ,  C08F4/60 ,  C08F210/00 ,  C08F297/08

Abstract: PURPOSE:To obtain a copolymer of a high molecular weight by polymerizing propylene in the presence of a specified catalyst system, adding an alkylaluminoxane to the reaction system, and polymerizing propylene with another alpha-olefin. CONSTITUTION:Propylene and at most 10wt.% alpha-olefin are polymerized in an inert hydrocarbon in the presence of a catalyst system comprising a solid containing titanium trichloride and an alkylaluminum compound of the formula: AlR3-nXn (wherein R is 1-8 C alkyl; X is halogen; and n is 0-3). An alkylaluminoxane is added to the reaction system without deactivating the catalyst system, and propylene and another alpha-olefin are copolymerized to obtain a propylene block copolymer having a weight-average molecular weight of 400000 or above when measured on the xylene-solubles at 20 deg.C.

公开(公告)号：JPH05331231A

公开(公告)日：1993-12-14

申请号：JP18024792

申请日：1992-05-29

Applicant: UBE INDUSTRIES

Inventor： TAMURA MASANORI ,  IMAOKA KOJI ,  SUZUKI KAZUTAKA ,  YAMADA SHINICHIRO

IPC: C08F4/658 ,  C08F4/60 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00

Abstract: PURPOSE:To obtain a stereoregular alpha-olefinic polymer having a practical molecular weight and a wide molecular weight distribution by using a highly active catalyst composed of specific two kinds of solid components, an organoaluminum compound and an electron donor. CONSTITUTION:An alpha-olefin is polymerized in the presence of a catalyst composed of (A) a solid catalyst component consisting essentially of Mg, Ti, a halogen and an electron donor, (B) a solid catalyst component prepared by carrying out the contact treatment of a solid consisting essentially of the Mg, halogen and electron donor with an organometallic compound of formula I or II [Cp is (substituted) cyclopentadienyl; M is group IVa, Va or VIa transition metal; M is Ti or Zr; R is H or methyl; R is methyl or Cl; R , R and R are 1-20C alkyl or aryl; X is halogen; m and n are 1-3; and (m+n) is , (R is 2-8C alkyl) and (C) an electron donor.

公开(公告)号：JPH06329737A

公开(公告)日：1994-11-29

申请号：JP12016893

申请日：1993-05-21

Applicant: UBE INDUSTRIES

Inventor： IGAI SHIGERU ,  TAMURA MASANORI ,  IKEUCHI HIROMICHI ,  YAMADA SHINICHIRO

IPC: C08F297/08

Abstract: PURPOSE:To provide the title copolymer easily moldable, excellent in mechanical properties such as rigidity and tensile strength, transparency and surface properties and capable of being processed at an increased molding speed. CONSTITUTION:The copolymer comprising a polypropylene component being insoluble in p-xylene at room temperature and having a melt flow index of 30 or above, an Mw/Mn ratio of 8 or greater, a melting point of 165 deg.C or above, a crystallization temperature of 117 deg.C or above and a crystalline melting heat of 107mJ/mg or above and a propylene/alpha-olefin copolymer component being soluble in p-xylene at room temperature and having an intrinsic viscosity of 5 or above and having a melt flow index of 10 or above is provided.

公开(公告)号：JPH05310827A

公开(公告)日：1993-11-22

申请号：JP15846392

申请日：1992-05-08

Applicant: UBE INDUSTRIES

Inventor： TAMURA MASANORI ,  IMAOKA KOJI ,  SUZUKI KAZUTAKA ,  YAMADA SHINICHIRO

IPC: C08F4/658 ,  C08F4/60 ,  C08F10/00

Abstract: PURPOSE:To obtain an alpha-olefin polymer having high stereoregularity, a practical molecular weight and a broad molecular weight distribution at high catalytic activity. CONSTITUTION:An alpha-olefin is polymerized in the presence of a catalyst system comprising a solid catalyst component (prepared by treating a carrier obtained by reacting an aluminum halide with a silicon compound and a magnesium compound with a titanium halide and an aromatic carboxylic acid ester and retreating the treated carrier with a titanium tetrahalide, provided that at least either of the titanium tetrahalides contains a tetraalkoxytitanium), an organolauminum compound, and an electron donor.

公开(公告)号：JPH05301920A

公开(公告)日：1993-11-16

申请号：JP14979092

申请日：1992-04-24

Applicant: UBE INDUSTRIES

Inventor： TAMURA MASANORI ,  IMAOKA KOJI ,  SUZUKI KAZUTAKA ,  YAMADA SHINICHIRO

IPC: C08F4/658 ,  C08F4/60 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00

Abstract: PURPOSE:To obtain a highly active, highly stereoregular polymer with broad molecular weight distribution by polymerizing an alpha-olefin in the presence of a specific catalyst. CONSTITUTION:The objective polymer can be obtained by polymerizing an alpha-olefin in the presence of a catalyst which is composed of (A) a solid catalytic component prepared by the following process: a aluminum halide is made to react with a compound of formula I (R is 1-8C alkyl, etc.; R is 1-8C alkyl; n is 0-3) followed by reaction with a compound of formula II (R is the same as R ; X is halogen) to form a carrier, which is, in turn, brought into contact with a compound of formula III (R is 1-8C alkyl, etc.; X is the same as X ; n is 0-4) and an aromatic carboxyl ester followed by treatment with the compound of the formula III again and then treatment with compounds of respective formulas IV and V [Cp* is (substituted) cyclopentadienyl; M is group IV or V transition metal; M is Ti or Zr; R is H, etc.; R is methyl, etc.; R , R and R are each 1-20C alkyl, etc.; X is the sane as X ; m and n are each 1-3, (m+n) being 3 (R is 2-8C alkyl) and (C) an electron donor.

公开(公告)号：JPH07228630A

公开(公告)日：1995-08-29

申请号：JP2143594

申请日：1994-02-18

Applicant: UBE INDUSTRIES

Inventor： IGAI SHIGERU ,  TAMURA MASANORI ,  IKEUCHI HIROMICHI ,  YAMADA SHINICHIRO

IPC: C08L23/10 ,  C08F4/60 ,  C08F4/642 ,  C08F4/6592 ,  C08F8/00 ,  C08F10/06 ,  C08L23/00

Abstract: PURPOSE:To obtain the subject composition capable of raising its molding rate, excellent in rigidity, tensile strength, transparency and surface characteristics, useful for structural materials, films etc., by incorporating a crystalline polypropylene with a specified amount of a specific nucleating agent polymer. CONSTITUTION:This highly crystalline polypropylene composition is obtained by incorporating (A) a crystalline polypropylene with (B) 10-10000wt.ppm of a nucleating agent polymer such as a polymer produced by polymerizing, in the presence of a metallocene-based polymerization catalytic system, at least one kind of monomer selected from >=4C branched alpha-olefins such as 3- methyl-1-butene, vinyl group-contg. cyclic hydrocarbon compounds such as vinylcyclohexane, alkenylsilanes such as vinyl trimethylsilane, indene compounds, and vinyl group-substituted aromatic compounds such as vinylnorbornene and styrene. It is preferable that the ratio Mw/Mr of the nucleating agent polymer be

公开(公告)号：JPH0593014A

公开(公告)日：1993-04-16

申请号：JP32084491

申请日：1991-10-01

Applicant: UBE INDUSTRIES

Inventor： TAMURA MASANORI ,  IMAOKA KOJI ,  SUZUKI KAZUTAKA ,  YAMADA SHINICHIRO

IPC: C08F4/658 ,  C08F4/60 ,  C08F10/00

Abstract: PURPOSE:To obtain an alpha-olefin (co)polymer having high stereoregularity and melt-flowability by using a catalyst consisting of a solid catalyst component such as Mg and Ti, an organic aluminum compound and a specific organic silicon compound. CONSTITUTION:An alpha-olefin is (co)polymerized in the presence of hydrogen and diethylzinc by using a catalyst consisting of (A) a solid catalyst component containing Mg, Ti, a halogen element and an electron donor as essential components, (B) an organic aluminum compound and (C) a silicon compound of formula R nSi(OR )4-n (R is 1-8C alkyl, phenyl or benzyl; R is 1-8C alkyl; (n) is integer of 0-3).

公开(公告)号：JPH072933A

公开(公告)日：1995-01-06

申请号：JP14375393

申请日：1993-06-15

Applicant: UBE INDUSTRIES

Inventor： TAMURA MASANORI ,  IKEUCHI HIROMICHI ,  SATO KATSUNORI ,  YAMADA SHINICHIRO

IPC: C08F4/654 ,  C08F4/60 ,  C08F10/00

Abstract: PURPOSE:To obtain a polymer with high stereoregularity and melt flowability by polymerizing an alpha-olefin in the presence of a catalyst comprising a solid catalyst component contg. Mg, Ti, etc., an organoaluminum compd., and a specific organosilicon compd. CONSTITUTION:An alpha-olefin polymer is produced by polymerizing an alpha-olefin (e.g. propylene) alone or together with ethylene, etc., in the presence of a high- activity catalyst which comprises a solid catalyst component contg. Mg, Ti, a halogen, and an electron donor (e.g. diethyl orthophthalate), an organoaluminum compd. (e.g. triethylaluminum), and an organosilicon compd. of the formula (wherein R to R are each a 1-12C hydrocarbon group; and n is 1-10)(e.g. 1,1-dimethoxy-1-methyl-3,3,3-trimethyl-1,3-disilapropane).

公开(公告)号：JPH06136073A

公开(公告)日：1994-05-17

申请号：JP28885892

申请日：1992-10-27

Applicant: UBE INDUSTRIES

Inventor： IGAI SHIGERU ,  TAMURA MASANORI ,  SUZUKI KAZUTAKA ,  YAMADA SHINICHIRO

IPC: C08F4/626 ,  C08F4/60 ,  C08F4/80 ,  C08F297/08

Abstract: PURPOSE:To obtain in high activity a high-molecular weight rubbery propylene block copolymer with high rigidity, excellent in impact strength by two-step polymerization between propylene and another alpha-olefin using each specific catalyst. CONSTITUTION:Firstly, in the presence of a catalyst composed of (A) a solid catalytic component essentially comprising Mg, Ti, halogen and electron donor, (B) an organoaluminum compound (pref. trialkylaluminum) and (C) a silicate compound (pref. cyclohexylmethyldimethoxysilane), propylene (and a small amount of another alpha-olefin) is polymerized. Second, in the 2nd step, (D) a piperidine compound (pref. 2,2,6,6-tetramethylpiperidine) is added to the above reaction system without deactivating the above catalyst to conduct a polymerization between the propylene and the rest of the other alpha-olefin. The component A is pref. prepared by reaction of AlCl3 with e.g. tetraethoxysilane, a Grignard compound, o-phthalic diester and e.g. TiCl4, successively.

公开(公告)号：JPH061817A

公开(公告)日：1994-01-11

申请号：JP19737892

申请日：1992-06-16

Applicant: UBE INDUSTRIES

Inventor： TAMURA MASANORI ,  IMAOKA KOJI ,  SUZUKI KAZUTAKA ,  YAMADA SHINICHIRO

IPC: C08F4/642 ,  C08F4/60 ,  C08F210/00 ,  C08F297/08

Abstract: PURPOSE:To stably obtain the title copolymer which has a given mol.wt., contains no gel, and has a rubbery copolymer segment having a high mol.wt. by conducting polymerization under specific conditions in the presence of a catalyst comprising a Ti-containing solid catalyst component and an organic Al compound. CONSTITUTION:A catalyst comprising a Ti-containing solid catalyst component (a) (e.g. SB-12 manufactured by Tosoh Akzo Corp.) and an organic Al compound (b) (e.g. diethylaluminum chloride) is used to obtain the title copolymer whose part soluble in xylene at 20 deg.C has a weight-average mol.wt. of 400,000 or higher. This process comprises the first step in which propylene or a mixture thereof with a small amount of other alpha-olefin (e.g. ethylene) is bulk-polymerized, followed by the second step in which propylene or a mixture thereof with other alpha-olefin is slurry-polymerized. The drawing shows the process.