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公开(公告)号：DE2516562A1
公开(公告)日：1976-10-28
申请号：DE2516562
申请日：1975-04-16
Applicant: BASF AG
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公开(公告)号：DE2516564A1
公开(公告)日：1976-10-28
申请号：DE2516564
申请日：1975-04-16
Applicant: BASF AG
Abstract: Conversion into fibrils of soluble polymeric materials pptd. from soln. into a liq. subjected to high shear, where the polymer feedstock is derived from the residual aq. phase of suspension polymerisation of styrene, after separation of the prod. polystyrene beads. Used to produce fibrils suitable for mfr. of synthetic paper or cardboard or for use as a fibrous filler in moulding compsns. Efficiently utilises material which otherwise would be wasted or recovered with difficulty directly from a glutinous mixt. which would result from chemical coagulation in bulk under low shear conditions, e.g. by use of acrylic acid copolymers, ammonium or hot persulphates.
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3.发明专利
公开(公告)号：DE2545727A1
公开(公告)日：1977-04-21
申请号：DE2545727
申请日：1975-10-11
Applicant: BASF AG
Inventor： SANDER BRUNO DIPL CHEM DR , BERBNER HEINZ ING GRAD , BONITZ ECKHARD DIPL CHEM DR , SCHERLING KURT
Abstract: Prepn. of non-foaming, aq. suspensions of fibrils made from a polymer other than polyolefins comprises dispersing the fibrils in water in the presence of 0.1-2 wt. % (on dry wt. of the fibrils) of an anionic protective colloid (I) as dispersion aid. (I) is pref. a melamine-HCHO polycondensate; the NH4 salt of a maleic acid - vinyl isobutyl ether copolymer, or the NH4 salt of a styrene and acrylic acid copolymer. The suspensions, opt. mixed with cellulose fibres, are used to make synthetic paper. By using (I) foaming in the papermaking machine is prevented; excellent dispersion is achieved at low (I) concns. and the prods. have high wet strength.
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Patent Agency Ranking
公开(公告)号：DE2516561A1
公开(公告)日：1976-10-28
申请号：DE2516561
申请日：1975-04-16
Applicant: BASF AG
Abstract: Fibrids of polymers of styrene, which are obtained in a fluid precipitation medium under the action of shearing forces.
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公开(公告)号：DE2646332A1
公开(公告)日：1978-04-20
申请号：DE2646332
申请日：1976-10-14
Applicant: BASF AG
Inventor： SINN RICHARD PROF DIPL ING DR , NAGEL OTTO DIPL-ING DR , SANDER BRUNO DIPL CHEM DR , BONITZ ECKHARD DIPL CHEM DR , SCHERLING KURT , ZETTLER HANS DIETER DIPL ING , STOEHR DIETER ING GRAD , BERBNER HEINZ ING GRAD
Abstract: Manufacture of fibrids from polymers or copolymers containing fluorine in a fluid precipitation medium under the action of shearing forces.
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公开(公告)号：DE2536780A1
公开(公告)日：1977-03-03
申请号：DE2536780
申请日：1975-08-19
Applicant: BASF AG
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8.发明专利
公开(公告)号：DE2516563A1
公开(公告)日：1976-10-28
申请号：DE2516563
申请日：1975-04-16
Applicant: BASF AG
Inventor： SANDER BRUNO DIPL CHEM DR , BONITZ ECKHARD DIPL CHEM DR , VOSS HEINZ , BERBNER HEINZ ING GRAD , GAERBER WOLFGANG
Abstract: Fibrils made by pumping a soln., in methylketone, tetrahydrofuran or 1,4-dioxan, of styrene, vinyl- or vinylidene-chloride into a chamber at ambient temp. which is simultaneously supplied with a liq. to cause pptn. of the polymer in a zone subjected to high shear at a work input rate of >5 W.s/cm3. For mfr. of fibres 0.5-30 mm long, 0.5-10 mym across, with a specific surface area of 10-70 m2/g and a fineness of 15-50 degrees SR (Schopper-Riegler scale). The fibres are suitable for mfr. of synthetic papers or cardboard or for use in moulding compsns. The fibres produced are readily isolated than those precipitated by coagulation in bulk from (hot) solns. The fibres produced are relatively white and behave similarly to cellulosic fibres when forming mats.
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