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    2.
    发明专利
    未知

    公开(公告)号：DE69704826D1

    公开(公告)日：2001-06-21

    申请号：DE69704826

    申请日：1997-09-30

    Applicant: MITSUI CHEMICALS INC

    Inventor： KAWASAKI MASAAKI ,  KODA TAKU ,  HAKUTA TAKASHI ,  TOJO TETSUO

    IPC: C08L23/08 ,  C08L23/16

    Abstract: A rubber modifier which can improve the workability in roll kneading and in extrusion of rubber without deteriorating the material properties of the rubber and which is superior in the performance of handling and working is provided. The rubber modifier comprises an ethylene/ alpha -olefin copolymer rubber (A) composed of one or more copolymers selected from the group consisting of a copolymer of ethylene and an alpha - olefin having 3 - 20 carbon atoms and a copolymer of ethylene, an alpha -olefin having 3 - 20 carbon atoms and a non-conjugated polyene, the copolymer rubber (A) having the parameters: an ethylene/ alpha -olefin mole ratio in the range of 51/49 to 87/13, an intrinsic viscosity eta ­ determined in decahydronaphthalene at 135 DEG C in the range of 0.8 to 2.5 dl/g and an iodine value in the range of 0 to 40.

    FOAM PROCESSABLE RUBBER COMPOSITIONS AND VULCANIZED RUBBER FOAM-MOLDED PRODUCTS OF THE SAME
    4.
    发明专利
    FOAM PROCESSABLE RUBBER COMPOSITIONS AND VULCANIZED RUBBER FOAM-MOLDED PRODUCTS OF THE SAME 未知

    公开(公告)号：CA2221081A1

    公开(公告)日：1998-05-15

    申请号：CA2221081

    申请日：1997-11-14

    Applicant: MITSUI CHEMICALS INC

    Inventor： KUNIZANE MASAO ,  NONAKA SHUICHI ,  KAWASAKI MASAAKI ,  KODA TAKU ,  TOJO TETSUO

    IPC: C08L23/16 ,  C08L23/08

    Abstract: Disclosed is a foam processable rubber composition which comprises an ethylene/.alpha.-olefin of 3 to 20 carbon atoms/non-conjugated polyene copolymer rubber (A), a crystalline polyolefin resin (B) having a melting point of 100 to 150 .degree.C and a foaming agent (C), in specific proportions. The copolymer rubber (A) has an ethylene/.alpha.-olefin molar ratio of 60/40 to 80/20, an intrinsic viscosity (.pi.), as measured in decalin at 135 .degree.C, of 0.7 to 2 dl/g, and an iodine value of 10 to 50. A vulcanized rubber foam-molded product can be obtained by vulcanizing and foaming the rubber composition. The rubber composition can provide vulcanized rubber foam-molded products having excellent vulcanization properties such as weathering resistance, heat resistance, ozone resistance and tear strength. Besides, the rubber composition exhibits excellent precision moldability and productivity of vulcanized rubber foam-molded products in transfer molding, injection molding and cast molding.

    7.
    发明专利
    未知

    公开(公告)号：DE60027479D1

    公开(公告)日：2006-05-24

    申请号：DE60027479

    申请日：2000-10-06

    Applicant: TORAY INDUSTRIES ,  MITSUI CHEMICALS INC

    Inventor： MATSUOKA HIDEO ,  HAMAGUCHI MITSUSHIGE ,  KOBAYASHI KAZUHIKO ,  TODO AKIRA ,  KODA TAKU

    IPC: C08L81/02 ,  B32B27/00 ,  B32B27/08 ,  B32B27/32 ,  C08J5/00 ,  C08L23/00 ,  C08L23/02

    Abstract: Provided is a thermoplastic resin structure formed of a resin composition that comprises substantially (a) from 5 to 80 % by volume of a polyolefin resin and (b) from 20 to 95 % by volume of a polyphenylene sulfide resin, which is characterized in that, in morphology therein seen through electronic microscopy, the polyphenylene sulfide resin (b) forms a matrix phase (continuous phase) and the polyolefin resin (a) forms a disperse phase. The thermoplastic resin structure gives plastic containers, tubes and their Attached parts having good barrier properties, strength, durability and workability.

    8.
    发明专利
    未知

    公开(公告)号：DE69704826T2

    公开(公告)日：2001-10-04

    申请号：DE69704826

    申请日：1997-09-30

    Applicant: MITSUI CHEMICALS INC

    Inventor： KAWASAKI MASAAKI ,  KODA TAKU ,  HAKUTA TAKASHI ,  TOJO TETSUO

    IPC: C08L23/08 ,  C08L23/16

    Abstract: A rubber modifier which can improve the workability in roll kneading and in extrusion of rubber without deteriorating the material properties of the rubber and which is superior in the performance of handling and working is provided. The rubber modifier comprises an ethylene/ alpha -olefin copolymer rubber (A) composed of one or more copolymers selected from the group consisting of a copolymer of ethylene and an alpha - olefin having 3 - 20 carbon atoms and a copolymer of ethylene, an alpha -olefin having 3 - 20 carbon atoms and a non-conjugated polyene, the copolymer rubber (A) having the parameters: an ethylene/ alpha -olefin mole ratio in the range of 51/49 to 87/13, an intrinsic viscosity eta ­ determined in decahydronaphthalene at 135 DEG C in the range of 0.8 to 2.5 dl/g and an iodine value in the range of 0 to 40.

    9.
    发明专利
    未知

    公开(公告)号：DE69635345T2

    公开(公告)日：2006-07-27

    申请号：DE69635345

    申请日：1996-07-05

    Applicant: MITSUI CHEMICALS INC

    Inventor： NAKAHAMA HIDENARI ,  KAWASAKI MASAAKI ,  ISHII YUJI ,  TOJO TETSUO ,  KODA TAKU ,  MAEJIMA YOSHIO ,  MIURA YUJI ,  HOSOMI YASUHIRO

    IPC: C08J3/00 ,  C08L23/02 ,  C08J9/04 ,  C08L23/00 ,  C08L23/04 ,  C08L23/08 ,  C08L23/10 ,  C08L23/16 ,  C08L53/00

    Abstract: The rubber composition of the invention is a vulcanizable blend obtained by microdispersing, in a molten state, a polyolefin resin (B) in an ethylene/ alpha -olefin/nonconjugated polyene copolymer rubber (A) comprising ethylene, an alpha -olefin of 3 to 20 carbon atoms and a nonconjugated polyene. In the rubber composition, a mean dispersed particle diameter of the polyolefin resin (B) is not more than 2 mu m, and a blending ratio of the component (B) to the component (A), Ä(B)/(A)Ü, is in the range of 5/95 to 50/50. By the use of the composition, the slightly microdispersible polyolefin resin (B) can be easily microdispersed by a kneading machine even when the composition is kneaded with additives such as reinforcing agent, filler, softener, vulcanization accelerator and vulcanizing agent. By the use of the composition, further, the polyolefin resin (B) can be reliably and sufficiently dispersed for a short period of time by a kneading machine conventionally used in the rubber industry, whereby a rubber product of high and stable quality can be readily supplied at low costs. The process for preparing rubber composition according to the invention comprises the steps of feeding a rubber mixture (E) which comprises 100 parts by weight of an ethylene/ alpha -olefin/nonconjugated polyene copolymer rubber (A) comprising ethylene, an alpha -olefin of 3 to 20 carbon atoms and a nonconjugated polyene and 3 to 10 parts by weight of an organic solvent (D) to a multi-stage vented extruder through its feed zone, feeding a polyolefin resin (B) to the extruder through another feed zone in an inert gas atmosphere, and kneading the rubber mixture (E) thus obtained and the polyolefin resin (B) and desolvating. According to this process, vulcanizable ethylene type copolymer rubber composition pellets, which comprise the ethylene/ alpha -olefin/nonconjugated polyene copolymer rubber (A) and the polyolefin resin (B), contain the polyolefin resin (B) sufficiently microdispersed and are free from blocking, can be easily obtained.

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