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    EXPANDABLE STYRENE POLYMER BEADS CONTAINING STERICALLY HINDERED PHENOLS AND THEIR PRODUCTION
    11.
    发明专利
    EXPANDABLE STYRENE POLYMER BEADS CONTAINING STERICALLY HINDERED PHENOLS AND THEIR PRODUCTION 未知

    公开(公告)号：CA2171867A1

    公开(公告)日：1995-03-30

    申请号：CA2171867

    申请日：1994-09-07

    Applicant: BASF AG

    Inventor： SCHERZER DIETRICH ,  RIETHUES MICHAEL ,  HENN ROLF ,  HAHN KLAUS ,  WITT MICHAEL

    IPC: C08J9/16 ,  C08F2/18 ,  C08F2/44 ,  C08J9/20 ,  C08K5/134 ,  C08L25/04 ,  C08J9/224

    Abstract: Pearl-shaped, expandable styrene polymers contain (a) a styrene polymer; (b) 0.03 to 1.5 % by weight, in relation to (a), of a sterically inhibited phenol homogenously distributed in the styrene polymer and/or applied as a coating on the surface of the styrene polymer; (c) an expanding agent or mixture of expanding agents; and if required (d) effective amounts of usual additives. Also disclosed is a process for producing said polymers, according to which styrene, if required with other comonomers, is polymerised in an aqueous suspension in the presence of suspension stabilisers and usual styrene-soluble polymerisation catalysts, with addition of an expanding agent or mixture of expanding agents, and if required of an effective amount of usual additives and of up to 1.5 % by weight, in relation to styrene and comonomers, of sterically hindered phenols. The thus obtained pearl-shaped, expandable styrene polymers are coated with up to 1.5 % by weight, in relation to the expanding agent-free styrene polymer, of sterically inhibited phenols, provided that the expandable styrene polymers that are homogenously distributed in the styrene polymer and/or applied as a surface coating contain in total 0.03 to 1.5 % by weight of sterically inhibited phenols, in relation to the styrene polymer.

    16.
    发明专利
    未知

    公开(公告)号：BRPI0515430A

    公开(公告)日：2008-07-22

    申请号：BRPI0515430

    申请日：2005-09-15

    Applicant: BASF AG

    Inventor： HENN ROLF ,  MUELLER ULRICH ,  STRAUB FERDINAND ,  DOSCH JUERGEN

    IPC: C07C2/66 ,  C07C15/073

    Abstract: Processes suitable for purifying aromatic-containing feed streams, and processes using such purified streams are described, wherein the purification processes comprise: (a) providing a process feedstream comprising an aromatic component; and (b) bringing the process feedstream into contact with a first zeolite and a second zeolite; wherein the first zeolite has a mean pore size of 0.3 to 0.5 nm, and wherein the second zeolite has a mean pore size of 0.6 to 0.8 nm.

    Vinyl compound composition containing an additive mixture has improved resistance to polymerization during purification and storage
    18.
    发明专利
    Vinyl compound composition containing an additive mixture has improved resistance to polymerization during purification and storage 未知

    公开(公告)号：DE10129533A1

    公开(公告)日：2003-01-09

    申请号：DE10129533

    申请日：2001-06-21

    Applicant: BASF AG

    Inventor： EGENOLF HEIKO ,  SUTORIS HEINZ FIEDRICH ,  WAGENBLAST GERHARD ,  HENN ROLF

    IPC: C07B63/04 ,  C07C7/20 ,  C09K15/20 ,  C09K15/30

    Abstract: A composition comprises a vinyl group-containing compound; a nitroxyl compound of a secondary amine that does not have an H atom on the alpha carbon atom; at least one aromatic compound and corresponding condensation products with a carbonyl compound and/or corresponding quinoneimines or quinonediimines; and a hydroxylated benzene compound. A composition (I) comprises: (A) at least one vinyl group-containing compound; (B) at least one nitroxyl compound of a secondary amine that does not have an H atom on the alpha carbon atom; (C) at least one compound of formula (1a), (1b) or (1c) and condensation products of the compounds of formula (1a) with a carbonyl compound comprising formaldehyde, acetaldehyde or acetone and/or quinoneimines or quinonediimines, prepared by reaction of quinones with compounds of formula (1b) or (1c); and (D) at least one compound of formula (2). R = H, 1-4C alkyl, 2-4C ;alkenyl, halogen, OY or NY2; R = H, 1-4C alkyl, 2-4C ;alkenyl, halogen, OY or NY2 ; R = H, 1-4C alkyl, 2-4C alkenyl, 7-10C aralkyl or 1-4C alkylcarbonyl; j = 0 or 1 whereby the carbon atom on ring A which neighbors that car on atom carrying the group -N(R )- is optionally bonded to the position 2' of ring A' via a single chemical bond, a carbonyl group or a group -C(Z)2-; Y,Z = H, 1-4C alkyl or 2-4C alkenyl; Y = H, 1-4C alkyl, 2-4C alkenyl or phenyl optionally substituted by 1-3, 1-4C alkyl groups; X = OR or NR R ; R -R = H, 1-4C alkyl or 2-4C alkenyl; X' = OR ' or NR 'R '; R '-R ' = H, 1-4C alkyl or 2-4C alkenyl; B = C2- or C3--alkylene or alkenyl bridge or a C2- alkenyl bridge optionally substituted by up to 4 alkyl groups; R = H, 1-4C alkyl or 2-4C alkenyl; and n = 1 or 2 Independent claims are also included for: (1) a process for the inhibition of the polymerization of a vinyl group containing compound (A) during purification or distillation by the addition of components (B), (C) and/or (D) prior to or during purification or distillation; and (2) Mixtures (II) comprising components (C) and (D).

    19.
    发明专利
    未知

    公开(公告)号：AT144783T

    公开(公告)日：1996-11-15

    申请号：AT93910002

    申请日：1993-05-17

    Applicant: BASF AG

    Inventor： HENN ROLF ,  BESECKE SIEGMUND ,  DECKERS ANDREAS ,  GUENTHERBERG NORBERT ,  BRUDERMUELLER MARTIN ,  NESTLER GERHARD ,  WASSMER KARL-HEINZ

    IPC: C08J9/12 ,  C08F2/18 ,  C08F2/44 ,  C08F257/02 ,  C08J9/16 ,  C08L25/00 ,  C08L33/00 ,  C08L33/24

    Abstract: PCT No. PCT/EP93/01222 Sec. 371 Date Nov. 22, 1994 Sec. 102(e) Date Nov. 22, 1994 PCT Filed May 17, 1993 PCT Pub. No. WO93/24561 PCT Pub. Date Dec. 9, 1993.An expandable styrene polymer comprising a) from 0 to 90% by weight of a styrene polymer or styrene copolymer other than b) contains at least 50% by weight of copolymerized styrene, b) from 10 to 100% by weight of a styrene/methacrylamide copolymer comprising from 0.5 to 50% by weight of at least one copolymerized N-substituted methacrylamide of the formula I I where R1 and R2 are identical or different and are hydrogen, C1- to C15-alkyl, C6- to C16-cycloalkyl or C6- to C20-aryl, it being possible, if R1 and R2 contain at least 2 carbon atoms, for at least 2 carbon atoms to be linked via hetero atoms, and c) from 1 to 15% by weight, based on the sum of a) and b), of an aliphatic C3- to C9-hydrocarbon and/or carbon dioxide as blowing agent.

    PREPARATION OF HARD URETHANE FOAMS
    20.
    发明专利
    PREPARATION OF HARD URETHANE FOAMS 未知

    公开(公告)号：CA2042353C

    公开(公告)日：1996-04-23

    申请号：CA2042353

    申请日：1991-05-10

    Applicant: BASF AG

    Inventor： HENN ROLF ,  HINZ WERNER ,  SCHUSTER LUDWIG ,  VORSPOHL KLAUS

    IPC: C08G18/48 ,  C08G65/26 ,  C08G65/28 ,  C08J9/00

    Abstract: The present invention relates to a process for the preparation of a hard foam containing urethane groups or urethane and isocyanurate groups by the polyisocyanate polyaddition process, by reacting a) a polyoxypropylene- or polyoxyethylene-polyoxypropylene-polyol containing secondary hydroxyl groups, having a functionality of from 3.5 to 4.3, a hydroxyl number of from 350 to 650 and a viscosity of from 500 to 2,500 mPa 23 .degree.C and prepared by anionic polymerization of 1,2-propylene oxide or ethylene oxide and 1,2-propylene oxide onto an initiator molecule mixture containing, based on the total weight, a1) from 40 to 80% by weight of a hexanetetrol, a2) from 1 to 30% by weight of a hexanetriol, a3) from 0 to 35% by weight of glycerol and a4) from 0 to 15% by weight of sorbitol or mannitol, or a mixture thereof, b) optionally, a low-molecular-weight chain extender and/or crosslinking agent with c) an organic, modified or unmodified polyisocyanate; in the presence of d) a blowing agent, e) a catalyst and, optionally, f) assistants and/or additives, and novel polyoxypropylene-polyols and polyoxyethylenepolyoxypropylene-polyols which can be used for this purpose.

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