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    31.
    发明专利
    未知

    公开(公告)号：DE19523585A1

    公开(公告)日：1997-01-02

    申请号：DE19523585

    申请日：1995-06-29

    Applicant: BASF AG

    Inventor： LOTH WOLFGANG DR ,  KNOLL KONRAD DR ,  GAUSEPOHL HERMANN DR

    IPC: C08L25/08 ,  C08F287/00 ,  C08L25/00 ,  C08L25/02 ,  C08L51/00 ,  C08L53/02 ,  C08L71/12 ,  C08L51/04 ,  C08F12/00 ,  C08F297/04 ,  C08F279/00

    Abstract: Disclosed is a molding material based - relative to the molding material formed by A and B - on 60 to 98 wt.% hard matrix A of polymerized or copolymerized units of at least one vinyl aromatic monomer or at least one vinyl aromatic monomer and at least one polar comonomer and on 2 to 40 wt.% soft phase B formed from a hydrogenated or unhydrogenated block copolymer produced by anionic polymerization and consisting of a vinyl aromatic monomer V and a diene D which has at least one statically or quasi-statically structured block (V/D) of vinyl aromatic monomer and diene and contains 10 to 80 wt.% matrix material (a) occlusions formed during the polymerization of hard matrix A in the presence of the block rubber. Disclosed also is the use of this molding material to produce foils, plates or moldings.

    32.
    发明专利
    未知

    公开(公告)号：DE19508935A1

    公开(公告)日：1996-09-19

    申请号：DE19508935

    申请日：1995-03-13

    Applicant: BASF AG

    Inventor： KNOLL KONRAD DR ,  LOTH WOLFGANG DR ,  GAUSEPOHL HERMANN DR

    IPC: C08F12/00 ,  C08F12/32 ,  C08K5/00 ,  C08L25/02 ,  C08L25/06 ,  C08L53/00 ,  C08L101/00 ,  C09K21/14

    Abstract: Fire resistant thermoplastic moulding materials contain (A) 5-99.5 wt.% copolymers derived from monomers of formula (I) and (II), where R1, R2 = H or 1-22C alkyl; R3 = H or 1-4C alkyl; and a, b = 0, 1, 2, 3, 4 or 5; (B) 0-89.5 wt.% polymers other than (A); (C) 0.5-20 wt.% fire retardant; and (D) 0-50 wt.% other additives and processing aids. Pref. component (A) is a copolymer of 1,1-diphenylethylene (DPE) and styrene, pref. a block copolymer of formula (A'-B')n, A'-B'-A', A'-(B'-A')m, B'-A'-B', B'-(A'-B')m, XÄ(A'-B')nÜm, X-Ä(B'-A')nÜm, XÄ(A'-B'-A')nÜm, XÄB'-A'-B')nÜm, XÄ(A'-B')nB'pÜm, XÄ(B'-A')nB'pÜm, XÄ(A'-B')nA'qÜm, XÄ(B'-A')nA'qÜm, B'p-X-(A'-B')n or A'q-X-(B'-A')n, A' = a copolymer block derived from (I) and (II); B' = a block derived from monomer (II); X = residue of an at least difunctional coupling agent; n, p, q = 1-10; and m = 2-20.

    33.
    发明专利
    未知

    公开(公告)号：DE4445141A1

    公开(公告)日：1996-06-20

    申请号：DE4445141

    申请日：1994-12-17

    Applicant: BASF AG

    Inventor： KNOLL KONRAD DR ,  LOTH WOLFGANG DR ,  FISCHER WOLFGANG DR ,  GAUSEPOHL HERMANN DR

    IPC: C08F2/42 ,  C08F6/00 ,  C08F297/04 ,  C08J3/00 ,  C08L25/06 ,  C08L53/02 ,  C08L25/02 ,  C08J3/20 ,  C08F112/06 ,  C08F6/10 ,  C08F6/28

    Abstract: The invention pertains to a process for continuous preparation of impact-resistant modified vinyl aromatic compounds, in particular impact-resistant modified polystyrene, wherein the vinyl aromatic compound and the impact-resistant modifying agent, a rubber-elastic block copolymer, are produced separately by anionic polymerization in a reaction zone with or without heat exchange with the environment - if necessary with the addition of a solvent - polymerized until complete conversion and the active chain ends are terminated in a per se known way. The invention also pertains to a thermoplastic impact-resistant modified molding compound based on a vinyl aromatic compound with a residual content of less than 50 ppm monomers and less than 100 ppm oligomers.

    35.
    发明专利
    未知

    公开(公告)号：DE4142575A1

    公开(公告)日：1993-06-24

    申请号：DE4142575

    申请日：1991-12-21

    Applicant: BASF AG

    Inventor： BESECKE SIEGMUND DR ,  DECKERS ANDREAS DR ,  LOTH WOLFGANG DR ,  LAUKE HARALD DR

    IPC: C08F8/32 ,  C08F8/48

    Abstract: A polymer essentially containing units of the formula I in which R and R are hydrogen or methyl, and R is C4-C18-alkyl, C5-C8-cycloalkyl, C6-C10-aryl or C6-C10-aryl-C1-C4-alkyl, where these radicals, with the exception of the C4-C18-alkyl radicals, may be up to trisubstituted by radicals selected from the group consisting of C1-C4-alkyl, C1-C4-alkoxy and halogen, and containing less than or equal to 0.40 equivalent of carboxyl and anhydride groups per kilogram of polymer and having an inherent colour (measured as yellowness index) of less than or equal to 2.0, obtainable by reacting a polymer based on C1-C20-alkyl esters of (meth)acrylic acid with a primary amine of the formula II R NH2 II by removing the alcohol formed during the reaction from the reaction mixture.

    36.
    发明专利
    未知

    公开(公告)号：DE59700250D1

    公开(公告)日：1999-08-12

    申请号：DE59700250

    申请日：1997-04-29

    Applicant: BASF AG

    Inventor： GAUSEPOHL HERMANN DR ,  FISCHER WOLFGANG DR ,  LOTH WOLFGANG DR ,  THIELE REINER PROF DR

    IPC: C08F2/00 ,  B01J19/24 ,  C08F2/06 ,  C08F12/04 ,  C08F112/08

    Abstract: The production of polystyrene is by continuous anionic polymerisation of styrene using a metal alkyl- based catalyst. the process comprises (1) polymerisation in an isothermally- operated circulatory tubular loop reactor, with the rate of circulation and residence time of the reaction mixture adjusted to give a monomer conversion of at least 50%, followed by (2) polymerisation to completion in a tubular reactor with no back- mixing.

    Production of random and block copolymers suitable for making fibers, films and moldings
    37.
    发明专利
    Production of random and block copolymers suitable for making fibers, films and moldings 未知

    公开(公告)号：DE19801101A1

    公开(公告)日：1999-07-22

    申请号：DE19801101

    申请日：1998-01-15

    Applicant: BASF AG

    Inventor： HUNGENBERG KLAUS-DIETER DR ,  LOTH WOLFGANG DR ,  KNOLL KONRAD DR ,  JANKO LUTZ ,  BANDERMANN FRIEDHELM PROF DR

    IPC: C08F212/08 ,  C08F236/10 ,  C08F236/06

    Abstract: Production of random copolymers from monomers S and B by anionic polymerization comprises: (a) using a mixture containing monomers S and B in given initial concentrations; (b) bringing this mixture into contact with the polymerization initiator I or a growing polymer chain PBI or PSI; and (c) adding the remainder of monomer B at a rate determined by repeated solution of given differential equations. Production of random copolymers from monomers S and B by anionic polymerization with a polymerization initiator comprises: (a) using a mixture containing monomers S and B in initial concentrations (S)0 and (B)0 given by equation (1); (b) initiating copolymerization by bringing this mixture into contact with the polymerization initiator I or a growing polymer chain PBI or PSI; and (c) adding the remainder of monomer B at a rate rz for time t given by repeated solution of differential equations (2) to (6); -dB/dt = -rz .(B)z + (kSB/V) . PSI . B + (kBB/V) . PBI . B (2) -dS/dt = (kBS/V) . PBI . S + (kSS/V) . PSI . S (3) -dPBI/dt = (kBS/V) . PBI . S - (kSB/V) . PSI .B (4) -dPSI/dt = (kSB/V) . PSI . B - (kBS/V) . PBI .S (5) -dV/dt = -rz - (1/ rho s - 1/ rho p) Ms . dS/dt - (1/ rho B - 1/ rho p) MB . dB/dt (6) s = the required fraction of monomer B in the copolymer in mol.%; kBB = the reaction velocity constant for addition of monomer B to the growing polymer chain PBI with a monomer B as last added monomer; kSS = the reaction velocity constant for addition of monomer S to the growing polymer chain PSI with a monomer S as last added monomer; kSB = the reaction velocity constant for addition of monomer B to the growing polymer chain PSI with a monomer S as last added monomer; kBS = the reaction velocity constant for addition of monomer S to the growing polymer chain PBI with a monomer B as last added monomer; V = the volume of polymerization mixture at the particular moment; (B)z = the concentration of monomer B in the feed; rho S, rho B = the density of monomers S and B; rho P = the density of the copolymer; MS, MB = the molar weight of monomers S and B; S, B = the amounts of S and B under conditions (7); d(B)/dt = (b/s) . d(S)/dt (7) Independent claims are also included for (a) the production of block or 3-block copolymers with a random copolymer block S/B produced by this process; and (b) copolymers produced by this process.

    38.
    发明专利
    未知

    公开(公告)号：DE19748833A1

    公开(公告)日：1999-05-06

    申请号：DE19748833

    申请日：1997-11-05

    Applicant: BASF AG

    Inventor： FISCHER WOLFGANG DR ,  BAUMGAERTEL MICHAEL DR ,  LOTH WOLFGANG DR ,  SCHADE CHRISTIAN DR ,  WITTSTOCK KLAUS DR

    IPC: B01J19/24 ,  C08F2/00 ,  C08F36/04 ,  C08F36/00

    Abstract: The invention relates to a continuous method for producing slightly gelified diene rubber, through anionic polymerisation or copolymerisation of a diene and, optionally, of a vinyl aromatic compound, in a tubular reactor. The method is characterised in that the reaction is performed at a pressure greater than the atmospheric pressure, in a hydraulically filled closed loop reactor (recirculation reactor) composed of tubular reactor members, and in that the method parameters are selected so that the concentration in diene monomers in the reaction mixture in a spatial medium is lower than 10 % wt.

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