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131. 发明专利

JPS64142A THERMOPLASTIC ELASTOMER COMPOSITION OF GOOD MOLDABILITY 失效
公开(公告)号：JPS64142A
公开(公告)日：1989-01-05
申请号：JP15344687
申请日：1987-06-22
申请人： MITSUI PETROCHEMICAL IND
发明人： OTAWA YASUHIKO , SAKAMAKI NOBORU , TOJO TETSUO , OKAMOTO KATSUO
IPC分类号： C08L23/16 , C08L23/26 , C08L67/02
摘要： PURPOSE:To make it possible to form a thermoplastic elastomer composition markedly improved in oil resistance, mechanical strengths and moldability, by mixing an ethylene/alpha-olefin copolymer rubber with a linear polyalkylene terephthalate and a low-MW modified ethylene random copolymer. CONSTITUTION:This thermoplastic elastomer composition is prepared by mixing an ethylene/alpha-olefin copolymer rubber (a) with a linear polyalkylene terephthalate (b) and a low-MW modified ethylene random copolymer (c). The mixing ratio is such that a:b is 90:10-60:40 (by weight), and c is 0.5-150pts.wt. per 100pts.wt. (a+b). As said modified copolymer (c), one obtained by graft- polymerizing an alpha,beta-unsaturated carboxlic acid or its derivative with a low-MW ethylene random copolymer and having an intrinsic viscosity [eta] (as determined in decalin at 135 deg.C) in the range of 0.05-0.55dl/g is used.

132. 发明专利

JPS62212446A VULCANIZABLE RUBBER COMPOSITION 失效
公开(公告)号：JPS62212446A
公开(公告)日：1987-09-18
申请号：JP5376286
申请日：1986-03-13
申请人： MITSUI PETROCHEMICAL IND
发明人： TOJO TETSUO , IMAISHI MITSUO , NAKAHARA TAKASHI , OKAMOTO KATSUO
IPC分类号： C08L23/26 , C08K3/00 , C08K3/34 , C08K5/09 , C08K5/36 , C08K5/54 , C08K13/02 , C08L23/00 , C08L51/00 , C08L51/02 , C08L51/06 , C08L101/00
摘要： PURPOSE:To provide the titled compsn. which has excellent mechanical char acteristics and thermal aging resistance and can be cured by heating, by blend ing a specified modified ethylene/alpha-olefin copolymer rubber with a silane cou pling agent and/or a titanium coupling agent. CONSTITUTION:100pts.wt. ethylene/alpha-olefin copolymer rubber (a) composed of 50-95mol% of ethylene, a 3-10C alpha-olefin and optionally, a polyene component is graft-copolymerized with 0.1-10pts.wt. at least one member (b) selected from the group consisting of unsaturated carboxyl acids (anhydride) and esters thereof to obtain a modified ethylene/alpha-olefin copolymer rubber (A) having a Mooney viscosity of 5-180. 100pts.wt. component A is blended with 1-15pts. wt. silane coupling agent (B) having an MW of 80-800 and a specific gravity of 0.80-1.35 and/or titanium coupling agent (B) having an MW of 200-3,000 and a specific gravity of 0.85-1.20, 10-150pts.wt. white filler (C) mainly composed of pref. silica and optionally, a reinforcing agent for rubber, a softener, etc.

133. 发明专利

JPS62104806A CHLORINATED RUBBER 失效
公开(公告)号：JPS62104806A
公开(公告)日：1987-05-15
申请号：JP24271685
申请日：1985-10-31
申请人： MITSUI PETROCHEMICAL IND
发明人： TOJO TETSUO , NAKAHARA TAKASHI , OTAWA YASUHIKO , OKAMOTO KATSUO
IPC分类号： C08F8/20 , C08F8/22
摘要： PURPOSE:To obtain a chlorinated rubber of outstanding characteristics in ozone and oil resistances weatherability, flame-retardancy, strength, etc., also with markedly improved processability, by chlorination of ethylene-alpha-olefin- vinylnorbornene copolymer rubber. CONSTITUTION:An ethylene-alpha-olefin-vinylnorbornene copolymer rubber containing ethylene and alpha-olefin (e.g., 1-butene) units in a molar ratio 50/50-95/5 (esp. 70/30-98/2) and also containing vinylnorbornene unit (e.g., 5-vinyl-2-norbornene) in a ratio of 3-30(esp. 5-25)mmol per 100gr of the total amount of said ethylene and alpha-olefin is chlorinated to obtain the objective chlorinated rubber with a chlorine content 10-45wt% and Mooney viscosity [ML1+4 (121 deg.C)] 10-190. It is recommended that each 0.05-2pts.wt., per 100pts.wt. of said chlorinated rubber, of a hydrochloric acid absorber, antioxidant and metal deactivator be added to the final rubber.

134. 发明专利

JPS6289716A THERMOPLASTIC ELASTOMER AND PRODUCTION THEREOF 失效
公开(公告)号：JPS6289716A
公开(公告)日：1987-04-24
申请号：JP22771985
申请日：1985-10-15
申请人： MITSUI PETROCHEMICAL IND
发明人： OTAWA YASUHIKO , TOJO TETSUO , OKAMOTO KATSUO
IPC分类号： C08F255/02 , C08F255/00 , C08F291/02
摘要： PURPOSE:To obtain the titled elastomer having good rubber elasticity, moldability, etc., by graft polymerizing a copolymerization component, e.g. an alkenyl aromatic compound, etc., in a specific proportion onto a latex composition of an ethylene-alpha-olefin based amorphous polymer having a specific particle diameter. CONSTITUTION:(B)0.3-150pts.wt. one or more copolymerization components belonging to the group of alkenyl aromatic compounds, preferably styrene, etc., vinyl cyanides, e.g. acrylonitrile, unsaturated carboxylic acids and derivatives thereof is graft polymerized onto (A) a latex composition consisting of (i) 100pts.wt. ethylene-alpha-olefin based amorphous copolymer, having 0.2-20mu average particle diameter, preferably having 0.2-5mu average particle diameter and obtained by crosslinking to give 50-75wt% hot toluene insoluble and preferably (ii) 2-50pts.wt. low-molecular weight (and/or modified low-molecular weight) alpha-olefin copolymer to afford the aimed elastomer.

135. 发明专利

JPS5930179B2 JPS5930179B2 - 失效
公开(公告)号：JPS5930179B2
公开(公告)日：1984-07-25
申请号：JP5153879
申请日：1979-04-27
申请人： Mitsui Petrochemical Ind
发明人： TOJO TETSUO , PPONMA KYOSHI , MATSUDA AKIRA
IPC分类号： C08L23/00 , C08F210/18 , C08L7/00 , C08L21/00 , C08L23/16 , C08L101/00

136. 发明专利

JPH107735A ETHYLENE COPOLYMER RUBBER, ITS PRODUCTION, AND VULCANIZABLE RUBBER COMPOSITION CONTAINING THE SAME 失效
公开(公告)号：JPH107735A
公开(公告)日：1998-01-13
申请号：JP16028596
申请日：1996-06-20
申请人： MITSUI PETROCHEMICAL IND
发明人： KAWASAKI MASAAKI , TSUTSUI TOSHIYUKI , NAKAHAMA HIDENARI , TOJO TETSUO
IPC分类号： C08F210/02 , C08F8/00 , C08F210/18 , C08L23/16
摘要： PROBLEM TO BE SOLVED: To obtain an ethylene copolymer rubber having a high vulcanization rate and excellent weathering resistance, heat resistance, ozone resistance and processability by subjecting ethylene, an α-olefin, a specified linear polyenic norbornene compound and a specified nonconjugated polyene to random copolymerization. SOLUTION: This rubber is a random copolymer comprising ethylene (A), a 3-20C α-olefin (B), a linear polyenic norbornene compound (C) represented by the formula (wherein n is an integer of 1-5; and R to R are each H or a 1-5 C alkyl) and a nonconjugated polyene (D) having one polymerizable double bond in the molecule. The molar ratio of the structural units derived from A to the structural units derived from B is 95/5 to 40/60 and the amounts of the structural units derived from C and D are 0.1-10mol% and 0.1-10mol%, respectively. This copolymer has an intrinsic viscosity [η] of 0.1-10dl/g as measured in decalin at 135 deg.C.

137. 发明专利

JPH101516A VIBRATIONPROOF RUBBER MOLDING AND ITS PRODUCTION 失效
公开(公告)号：JPH101516A
公开(公告)日：1998-01-06
申请号：JP15263496
申请日：1996-06-13
申请人： MITSUI PETROCHEMICAL IND
发明人： KAWASAKI MASAAKI , NAKAHAMA HIDENARI , TOJO TETSUO
IPC分类号： C08F4/642 , C08F4/60 , C08F4/659 , C08F4/6592 , C08F210/00 , C08F210/16 , C08F210/18
摘要： PROBLEM TO BE SOLVED: To obtain a vibrationproof rubber molding which is excellent in resistances to environmental aging and dynamic fatigue and has a long like by randomly copolymerizing ethylene, a specific α-olefin, and a nonconjugated polyene under specified conditions on the presence of a specific metallocene catalyst. SOLUTION: This molding contains ethylene units and 4-20C α-olefin units in a molar ratio of (40/60)-(85/15), has an iodine value of 1-50 and an intrinsic viscosity η (at 135 deg.C in decalin) of 2-10dl/g, and is obtd. by randomly copolymerizing ethylene, a 4-20C α-olefin, and a nonconjugated diene in the presence of a metallicence catalyst contg. a metallocene compd. such as one represented by the formula [wherein M is a transition metal of the group IVB; R and R are each H, halogen, a 1-20C hydrocarbon group, or a group contg. Si, O, S, N, or P; R and R are each 1-20C alkyl; X and X each H, halogen, a 1-20C hydrocarbon group, a halohydrocarbon group, or a group contg. O or S; and Y is a 1-20C divalent (halo)hydrocarbon group, a divalent Si- or Ge- contg. group, O, CO, S, SO2 , etc.].

138. 发明专利

JPH09176401A RUBBER ROLL 失效
公开(公告)号：JPH09176401A
公开(公告)日：1997-07-08
申请号：JP33747995
申请日：1995-12-25
申请人： MITSUI PETROCHEMICAL IND
发明人： KAWASAKI MASAAKI , KANDA HIROSHI , TOJO TETSUO
IPC分类号： C08J5/00 , B29D99/00 , B29K23/00 , C08F10/00 , C08F210/18 , C08L23/08 , C08L23/18 , B29D31/00
摘要： PROBLEM TO BE SOLVED: To obtain a low-hardness rubber roll excellent in abrasion resistance, heat aging resistance, and compression set properties by using a rubber compsn. contg. a specific ethylene-α-olefin-nonconjugated polyene copolymer rubber obtd. by using a metallocene catalyst. SOLUTION: This rubber roll is produced from a rubber compsn. contg. an ethylene-α-olefin-nonconjugated polyene copolymer rubber which is obtd. by randomly copolymerizing ethylene, a 3-12C α-olefin, and a nonconjugated polyene in the presence of a metallocene catalyst and has a molar ratio of ethylene unit to α-olefin unit of (50:50)-(75:25), an iodine value of 1-40, and an intrinsic viscosity (at 135 deg.C in decalin) of 0.8-5dl/g. Pref. a vulcanized compsn. is used which contains two types of the copolymer rubber: one having an intrinsic viscosity of at least 0.95 times that of a linear ethylene-propylene copolymer having an ethylene content of 70mol% and the same wt. average mol.wt. as that of the copolymer rubber; and the other having an intrinsic viscosity of 0.2-0.95 times that of the ethylene-propylene copolymer. The nonconjugated polyene may be aliph. or alicyclic. Thus obtd. rubber roll has a JIS A hardness as low as 37 or lower.

139. 发明专利

JPH09157459A RUBBER COMPOSITION FOR WIPER BLADE AND WIPER BLADE RUBBER MOLDED FORM THEREFROM 失效
公开(公告)号：JPH09157459A
公开(公告)日：1997-06-17
申请号：JP31934495
申请日：1995-12-07
申请人： MITSUI PETROCHEMICAL IND
发明人： KAWASAKI MASAAKI , TOJO TETSUO , SHIRATA TAKASHI , TSUTSUI TOSHIYUKI
IPC分类号： B60S1/38 , C08F210/16 , C08F210/18 , C08L23/00 , C08L23/08
摘要： PROBLEM TO BE SOLVED: To obtain the subject composition useful for wiper blade rubber molded forms of long service life with excellent resistance to environmental deterioration and dynamic fatigue, comprising a rubber produced from ethylene, a specific α-olefin and a nonconjugated polyene. SOLUTION: This rubber composition comprises an ethylene-α-olefin- nonconjugated polyene terpolymer rubber 1-50 in iodine value and 1-5dL/g in intrinsic viscosity [η] determined in decalin at 135 deg.C which is produced by random copolymerization between (A) ethylene, (B) a 3-14C α-olefin and (C) a nonconjugated polyene in the presence of a metallocene-based catalyst and contains component A-derived unit and component B-derived unit in the molar ratio of (40:60) to (80:20). It is preferable that the ratio of the above intrinsic viscosity to that of a straight-chain ethylene-propylene copolymer 70mol% in ethylene content having the same weight - average molecular weight as that of the above copolymer rubber be > 0.95.

140. 发明专利

JPH0977929A RUBBER COMPOSITION FOR RUBBER VIBRATION ISOLATOR 失效
公开(公告)号：JPH0977929A
公开(公告)日：1997-03-25
申请号：JP23311495
申请日：1995-09-11
申请人： MITSUI PETROCHEMICAL IND
发明人： NAKAHAMA HIDENARI , KAWASAKI MASAAKI , TOJO TETSUO , TSUTSUI TOSHIYUKI
IPC分类号： F16F15/08 , C08K3/04 , C08K3/06 , C08K3/34 , C08L23/16 , F16F1/36
摘要： PROBLEM TO BE SOLVED: To obtain a rubber composition which can give a rubber vibration isolator improved in vibrationproofing properties, durability and heat resistance by mixing a specified random copolymer rubber with a filler and a vulcanizer. SOLUTION: Fifty (50) to 80mol% ethylene is copolymerized with 50-20mol% 3-20C α-olefin and a branched polyene compound of the formula (wherein (n) is 1-5; R is a 1-5C alkyl; and R and R are each H or a 1-5C alkyl) at 50-150 deg.C for 5min to 5hr under a pressure of 80kg/cm or above in the presence of a catalyst comprising a transition metal compound and an organoaluminum(oxy) compound to obtain a random copolymer (A) having an iodine value of 5-30 and an intrinsic viscosity of 1.0-6.0dl/g (in decalin at 135 deg.C). One hundred (100) pts.wt. component A is mixed with 20-100 pts.wt. filler (B), 0.5-10 pts.wt. vulcanizer (C) and 1-20 pts.wt. vulcanization accelerator (D), and the resultant mixture is kneaded at 40-80 deg.C for 5-30min to obtain a rubber composition for a rubber vibration isolator, which has a loss tangent (tan δ) of 0.03-0.15 when determined by a dynamic viscoelasticity test after being vulcanized.

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