21.
    发明专利
    未知

    公开(公告)号:ES2055225T3

    公开(公告)日:1994-08-16

    申请号:ES90111720

    申请日:1990-06-21

    Applicant: BASF AG

    Abstract: Bead-form expandable styrene polymers containing a styrene polymer having a mean molecular weight (weight average) of less than 130x103 and a steep high-molecular-weight flank of the molecular-weight distribution curve, and 0.15 to 1.5 mol of a C3- to C6-hydrocarbon as blowing agent, and, if desired, customary additives in effective amounts, are distinguished by a particularly high expansion capacity.

    22.
    发明专利
    未知

    公开(公告)号:DE59005997D1

    公开(公告)日:1994-07-14

    申请号:DE59005997

    申请日:1990-06-21

    Applicant: BASF AG

    Abstract: Bead-form expandable styrene polymers containing a styrene polymer having a mean molecular weight (weight average) of less than 130x103 and a steep high-molecular-weight flank of the molecular-weight distribution curve, and 0.15 to 1.5 mol of a C3- to C6-hydrocarbon as blowing agent, and, if desired, customary additives in effective amounts, are distinguished by a particularly high expansion capacity.

    23.
    发明专利
    未知

    公开(公告)号:ES2052080T3

    公开(公告)日:1994-07-01

    申请号:ES90102190

    申请日:1990-02-03

    Applicant: BASF AG

    Abstract: Bead-form expandable moulding compositions of high heat resistance contain from 80 to 99 % by weight of a styrene polymer, from 1 to 20 % by weight of poly(2,6-dimethyl)-1,4-diphenyl ether, from 3 to 10 % by weight of a C3-C6-hydrocarbon as blowing agent and optionally conventional additives. They are obtained by suspension polymerisation of a solution of the polyphenylene ether in styrene.

    25.
    发明专利
    未知

    公开(公告)号:DE59002427D1

    公开(公告)日:1993-09-30

    申请号:DE59002427

    申请日:1990-04-30

    Applicant: BASF AG

    Abstract: Expandable styrene polymers comprising a) from 50 to 98% by weight of polystyrene and b) from 2 to 50% by weight of a styrene-soluble elastomer and possibly also containing from 1 to 15% by weight, based on the sum of a) and b), of a low-boiling blowing agent and optionally conventional additives are expanded to give foams having a density of from 0.01 to 0.1 g/cm and increased elasticity. They can be prepared by suspension polymerisation of a styrene solution of the elastomer and addition of a blowing agent.

    28.
    发明专利
    未知

    公开(公告)号:DE3921148A1

    公开(公告)日:1991-01-10

    申请号:DE3921148

    申请日:1989-06-28

    Applicant: BASF AG

    Abstract: Bead-form expandable styrene polymers containing a styrene polymer having a mean molecular weight (weight average) of less than 130x103 and a steep high-molecular-weight flank of the molecular-weight distribution curve, and 0.15 to 1.5 mol of a C3- to C6-hydrocarbon as blowing agent, and, if desired, customary additives in effective amounts, are distinguished by a particularly high expansion capacity.

    29.
    发明专利
    未知

    公开(公告)号:DE3915602A1

    公开(公告)日:1990-11-15

    申请号:DE3915602

    申请日:1989-05-12

    Applicant: BASF AG

    Abstract: Expandable styrene polymers comprising a) from 50 to 98% by weight of polystyrene and b) from 2 to 50% by weight of a styrene-soluble elastomer and possibly also containing from 1 to 15% by weight, based on the sum of a) and b), of a low-boiling blowing agent and optionally conventional additives are expanded to give foams having a density of from 0.01 to 0.1 g/cm and increased elasticity. They can be prepared by suspension polymerisation of a styrene solution of the elastomer and addition of a blowing agent.

    30.
    发明专利
    未知

    公开(公告)号:DE59010707D1

    公开(公告)日:1997-05-28

    申请号:DE59010707

    申请日:1990-09-14

    Applicant: BASF AG

    Abstract: Expandable styrene polymers containing a) 80 to 99% by weight of polystyrene, b) 1 to 20% by weight of a styrene-soluble polymer having a softening temperature above 140 DEG C, c) 3 to 10% by weight, based on the sum of a) and b), of a C3- to C6-hydrocarbon as a blowing agent, and optionally d) conventional additives, in which the mixture of components a) and b) has a melt flow index MFI 200/5 of between 15 and 30, are distinguished by high heat distortion resistance and good expandability.

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