SHOCK-RESISTANT POLYPHENYLENE ETHER/STYRENE RESIN/ ELASTOMER COMPOSITION

    公开(公告)号:JPH107899A

    公开(公告)日:1998-01-13

    申请号:JP8301097

    申请日:1997-04-01

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject composition which comprises a polyphenylene ether and a specific elastomer block copolymer and has a good cold shock resistance and excellent melt-flow properties. SOLUTION: (A) Apolyphenylene ether [suitably poly(2,6-dimehyl-1-4phenylene) ether], (B) a styrene resin (suitably polystyrene) and (C) an elastomer block copolymer comprising an intermediate block of ethylene/propylene copolymer and both terminal blocks of styrene polymer are formulated so that the component (C) amounts to 2-40wt.% based on the whole weight of the composition. the component (C) is preferably a linear styrene-ethylene/propylene-styrene block copolymer. The weight ratio of the components (A)/(B) is preferably 75/25 to 50/50. These components (A), (B) and (C) are preferably mixed in their molten state. When necessary, the objective composition is prevented from deterioration by adding small amounts of stabilizers.

    THERMOPLASTIC ELASTOMER COMPOSITION WITH IMPROVED OVERMOLDING ADHESION

    公开(公告)号:JPH10101895A

    公开(公告)日:1998-04-21

    申请号:JP25903997

    申请日:1997-09-24

    Abstract: PROBLEM TO BE SOLVED: To obtain a thermoplastic elastomer composition excellent in adhesion to polar matrices such as polycarbonate and suitable for over-molded molding materials by including a specific elastomeric block copolymer, a specific rubber and a plasticizer. SOLUTION: This elastomer composition contains (A) preferably 32-65wt.% hydrogenated elastomeric block copolymer having two or more resinous endblocks of polymerized monovinyl aromatic compound such as styrene and an elastomeric midblock of polymerized conjugated diene such as 1,3-butadiene, (B) preferably 20-45wt.% plasticizer such as oil, (C) preferably 5-20% ethylene- propylene-diene monomer rubber grafted with styrene-acrylonitrile and (D) 3-10wt.% fluidity promoter derived from α-methylstyrene. Furthermore, the composition is preferably extruded onto a polar polymer to produce an over- molded polar polymer molding product.

    POLYPHENYLENE ETHER/POLYSTYRENE BLEND HAVING EXCELLENT PROCESSABILITY

    公开(公告)号:JPH10287805A

    公开(公告)日:1998-10-27

    申请号:JP9439498

    申请日:1998-04-07

    Abstract: PROBLEM TO BE SOLVED: To obtain a polymer composition having high toughness as well as excellent processability by compounding a modifying agent containing a specific block copolymer and a low-density polyolefin to a polyphenylene ether/ polystyrene blend. SOLUTION: A polyphenylene ether(PPE)/polystyrene(PS) blend is compounded with a modifying agent containing (A) a hydrogenated elastomeric block copolymer containing at least two dendrite terminal blocks composed of a polymerizable monovinyl aromatic compound (preferably styrene) and an elastomeric middle block composed of a polymerizable conjugated diene (preferably butadiene) and (B) a polyolefin having a density of

    THERMOPLASTIC ELASTOMER COMPOSITION IMPROVED IN OVER-MOLDING ADHESIVE POWER

    公开(公告)号:JPH10130453A

    公开(公告)日:1998-05-19

    申请号:JP25903897

    申请日:1997-09-24

    Abstract: PROBLEM TO BE SOLVED: To obtain a soft rubberlike thermoplastic elastomer compsn. which strongly adheres to a rigid (polar) substrate such as a polycarbonate or ABS by compounding a hydrogenated elastomeric block copolymer having a specified structure with a plasticiazer, an olefin-acrylate polymer, and a polyolefin. SOLUTION: The hydrogenated elastomeric block copolymer has terminal resin blocks each formed from at least two kinds of monovinylarom. compd. and a central elastomer block formed from a conjugated diene. The compsn. pref. contains 15-60wt.% block copolymer, 15-45wt.% plasticizer, 5-20wt.% olefin- acrylate polymer (pref. an ethylene-acrylate polymer), and 0.1-20wt.% polyolefin (pref. polypropylene).

    8.
    发明专利
    未知

    公开(公告)号:DE69708815D1

    公开(公告)日:2002-01-17

    申请号:DE69708815

    申请日:1997-09-23

    Abstract: The present invention relates to A thermoplastic elastomer composition comprising: a hydrogenated elastomeric block copolymer having at least two resinous endblocks of polymerized monovinyl aromatic compound and an elastomeric midblock of polymerized conjugated diene; a plasticizer; and an ethylene-propylene-diene monomer rubber grafted with styrene-acrylonitrile. The present invention further relates to a process for the preparation of an overmoulded polar polymer shape; to an overmoulded polar polymer shape; and to articles containing the overmoulded polar polymer shape.

    9.
    发明专利
    未知

    公开(公告)号:ES2158444T3

    公开(公告)日:2001-09-01

    申请号:ES97202911

    申请日:1997-09-23

    Abstract: A thermoplastic elastomer composition comprises: (a) a hydrogenated elastomeric block copolymer having at least two resinous end-blocks of polymerised monovinyl aromatic compound and an elastomeric mid-block of polymerised conjugated diene; (b) a mid-block plasticiser; (c) an ethylene-acrylate polymer; (d) a polypropylene; and (e) a stabiliser. Also claimed is a process for improving adhesion of a thermoplastic elastomer to a polar matrix which comprises: (a) mixing a hydrogenated elastomeric block copolymer as above with polypropylene and white mineral oil to form a first mixture; (b) mixing an ethylene-acrylate polymer with the first mixture to form a second mixture; (c) extruding the second mixture; (d) moulding a plaque comprising a polar polymer; and (e) moulding the extrudate onto the polar plaque. Further claimed is a thermoplastic elastomer made by the above process.

    10.
    发明专利
    未知

    公开(公告)号:DE69704597D1

    公开(公告)日:2001-05-23

    申请号:DE69704597

    申请日:1997-09-23

    Abstract: A thermoplastic elastomer composition comprises: (a) a hydrogenated elastomeric block copolymer having at least two resinous end-blocks of polymerised monovinyl aromatic compound and an elastomeric mid-block of polymerised conjugated diene; (b) a mid-block plasticiser; (c) an ethylene-acrylate polymer; (d) a polypropylene; and (e) a stabiliser. Also claimed is a process for improving adhesion of a thermoplastic elastomer to a polar matrix which comprises: (a) mixing a hydrogenated elastomeric block copolymer as above with polypropylene and white mineral oil to form a first mixture; (b) mixing an ethylene-acrylate polymer with the first mixture to form a second mixture; (c) extruding the second mixture; (d) moulding a plaque comprising a polar polymer; and (e) moulding the extrudate onto the polar plaque. Further claimed is a thermoplastic elastomer made by the above process.

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