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公开(公告)号：DE3529982A1
公开(公告)日：1987-02-26
申请号：DE3529982
申请日：1985-08-22
Applicant: BASF AG
Inventor： GOETTSCH MANFRED DR , KINDLER HUBERT DR , MOEDERSHEIM NORBERT , RUDOLPH GUENTHER
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公开(公告)号：DE3682459D1
公开(公告)日：1991-12-19
申请号：DE3682459
申请日：1986-08-12
Applicant: BASF AG
Inventor： GOETTSCH MANFRED DR , KINDLER HUBERT DR , MOEDERSHEIM NORBERT , RUDOLPH GUENTHER RUDOLPH GUENT
Abstract: Fire retardant polystyrene compsns. contg. (a) halogenated hydrocarbon flame retardant agents together with at least one of (b) a synergist for the (a), (c) stabilisers, (d) antioxidants and (e) additives, are made by a multistage mixing process comprising (1) premixing polystyrene with the (a) and part or all of the (c) at temps. up to 100 deg.C, (2) continuously feeding the premix into a continuously operating single or twin screw extruder or kneader, opt. together with further additives, (3) in a subsequent mixing zone of the extruder, feeding into the prod. stream a monomer- and solvent-free melt of a polystyrene resin at 200-250 deg.C, opt. together with other additives, and (4) extruding and granulating the resulting flame resistant polystyrene compsn..
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公开(公告)号：DE2111720A1
公开(公告)日：1972-09-28
申请号：DE2111720
申请日：1971-03-11
Applicant: BASF AG
Inventor： GOETTSCH MANFRED DR
IPC: C08F265/04 , C08F285/00 , C08F3/30
Abstract: The PVC polymers or copolymers contg. =20 wt.% of other monomers have good mechanical values but can be easily worked. They are obtd. by suspension polymsn. of the monomers under usual conditions but in presence of a soft component. The soft component consists of (a) polymers of acrylic or vinyl esters and (b) polymethylmethacrylates. The component is added as an aq. dispersion, which contains mixts. of (a) + (b), or graft copolymers of monomeric (a) on polymer (b) or vice-versa, or mixts. of graft copolymers with (a) and/or (b). The component must contain >=5% polymeric vinyl or acrylic ester and >=4% polymethylmethacrylates.
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