中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

137 records (took 0.033 seconds)

    93.
    发明专利
    未知

    公开(公告)号：DE59600015D1

    公开(公告)日：1997-08-28

    申请号：DE59600015

    申请日：1996-03-21

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  HOFMANN JUERGEN ,  OHLIG HILMAR ,  MAILAHN ELMAR ,  BUS KLAUS ,  CZAUDERNA BERNHARD ,  GRABOWSKI SVEN

    IPC: B29B7/88 ,  B29B7/48 ,  B29B7/58 ,  B29B13/06 ,  B29C47/40 ,  B29C48/395 ,  B29C48/76 ,  C08G85/00 ,  C08J3/20 ,  C08J3/205 ,  C08L25/04 ,  C08L27/06 ,  C08L33/04 ,  C08L33/12 ,  C08L33/18 ,  C08L33/20 ,  C08L51/00 ,  C08L51/04 ,  C08L55/02 ,  C08L101/00 ,  B29C47/38 ,  B29C47/76

    Abstract: A process is claimed for the prodn. of impact-modified thermoplastics (I) by (a) mechanical dehydration of a moist elastomer component (A) contg. up to 60 wt% residual water and (b) mixing the dried elastomer obtd. (A') with a thermoplastic polymer (B) in a screw machine. The process is carried out in a twin screw extruder with synchronous double-threaded screws and with the following sequence in the direction of feed: (1) a metering section for introducing component (A) into the extruder via a metering device, (2) squeezing section(s) for removing the water, with accumulator element(s) and associated water outlet(s), (3) section(s) fitted with a feeder screw or with mixing, kneading and/or other plasticising elements, (4) section(s) in which polymer (B) is added as a melt, (5) section(s) fitted with mixing, kneading and/or other plasticising elements, (6) degassing section(s) with gas outlets, in which residual water is removed as vapour, and (7) a discharge zone. The water emerging from the outlets in section (2) is partly or completely in the liq. phase, and the extruder is operated at a screw speed of 50-600 r.p.m., with a mean shear rate of 20-240 s . Also claimed are impact-modified thermoplastic moulding materials (I) obtd. by this process.

    Deep draw thermoplastic moulding materials for fibres, films or formed articles
    94.
    发明专利
    Deep draw thermoplastic moulding materials for fibres, films or formed articles 未知

    公开(公告)号：DE19547975A1

    公开(公告)日：1997-06-26

    申请号：DE19547975

    申请日：1995-12-21

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT DR ,  HOFMANN JUERGEN ,  MAILAHN ELMAR ,  OHLIG HILMAR

    IPC: B29C48/76 ,  C08L55/02 ,  B29B7/84 ,  B29B7/48

    Abstract: Prepn. of deep draw-modified thermoplastics (T) by mechanical dewatering of a wet elastomer component (A) contg. up to 50 wt.% residual water and mixing dewatered (A) with a thermoplastic polymer (B) in a screw - by adding (A) to a twin-screw extruder with 3-way rotating screws. This extruder contains the following sections (in the direction of flow): (1) feed for adding (A) to the extruder; (2) at least one crusher for dewatering (A) that contains one or more barriers each with an opening through which at least some of the water passes as a liq.; (3) at least one section to which molten (B) is added; (4) one or more sections with mixing, kneading and/or plasticising devices; (5) at least one degassing section with one or more gas outlets through which water is removed as steam; and (6) an exit zone. Also claimed are deep draw-modified moulding materials prepd. by this process.

    95.
    发明专利
    未知

    公开(公告)号：ES2100401T3

    公开(公告)日：1997-06-16

    申请号：ES93111638

    申请日：1993-07-21

    Applicant: BASF AG

    Inventor： BESECKE SIEGMUND DR ,  DECKERS ANDREAS DR ,  HOFMANN JUERGEN ,  KROEGER HARALD ,  OHLIG HILMAR

    IPC: C08F8/32 ,  C08F8/48

    Abstract: The preparation of a polymer essentially comprising units of the formula I in which R and R are hydrogen or methyl, and R is C1-C18-alkyl, C5-C12-cycloalkyl, C6-C10-aryl or C6-C10-aryl-C1-C4-alkyl, where these radicals, with the exception of the C1-C18-alkyl radicals, may be up to trisubstituted by radicals selected from the group consisting of C1-C4-alkyl, C1-C4-alkoxy and halogen, by reacting a polymer based on C1-C20-alkyl esters of acrylic acid, methacrylic acid or mixtures thereof with ammonia or a primary amine in an extruder, by vigorously mixing the ammonia or the primary amine with a melt of the polymer to be reacted at a maximum temperature of 250 DEG C before carrying out the imidation, and the use of the polymers prepared by this process for the production of thermoplastic mouldings, films or fibres, and mouldings, films or fibres made from these polymers.

    98.
    发明专利
    未知

    公开(公告)号：DE19514145A1

    公开(公告)日：1996-10-17

    申请号：DE19514145

    申请日：1995-04-15

    Applicant: BASF AG

    Inventor： GOETZ WALTER DR ,  HOFMANN JUERGEN ,  KOPIETZ MICHAEL DR ,  HORLE HELMUT DR

    IPC: C08G69/26 ,  C08G69/04 ,  C08G69/28 ,  C08G73/10 ,  G03F7/004 ,  G03F7/038 ,  G11B5/48 ,  G11B21/00 ,  H05K1/05

    Abstract: Production of a polymer based on a dicarboxylic acid and a diamine by polycondensation in an extruder, by (a) heating a mixture which is solid at room temperature of a dicarboxylic acid with 4 to 12 C atoms and a diamine with 4 to 12 C atoms with a residual humidity content of under 5 wt.% in a counterflow double-worm extruder to a temperature in the region of 150 to 400 DEG C under autogenous pressure to produce an extract A, (b) taking the extract A to a synchronous double-worm extruder, in which the extract A is exposed to a temperature in the 150 to 400 DEG C range and any residual water and water from polycondensation is removed via outgassing apertures, to obtain an extract B, provided that the synchronous double-worm extruder comprises at least two segments with different pressures.

    99.
    发明专利
    未知

    公开(公告)号：DE4433272A1

    公开(公告)日：1996-03-21

    申请号：DE4433272

    申请日：1994-09-19

    Applicant: BASF AG

    Inventor： MARCZINKE BERND LOTHAR DR ,  SCHWAGER HARALD DR ,  SEILER ERHARD DR ,  HOFMANN JUERGEN

    IPC: C08F255/00 ,  C08K5/3415 ,  C08L23/04 ,  C08L23/10 ,  C08L23/14 ,  C08L23/08 ,  C08L23/20 ,  C08L51/06 ,  C08J3/24 ,  C08J9/00 ,  D01F6/46

    Abstract: Partly crosslinked polyolefin mixt. consists of: (a) a polymer of 25-97 wt.% propylene polymer (IA) contg. 0-15 wt.% copolymerised 2-10C alk-l-ene cpds. (II) and 3-75 wt.% propylene polymer (IB) contg. 15-80 wt.% copolymerised (III); (b) a random ethylene copolymer with 5-20 wt.% copolymerised 3-10C alk-l-ene cpds. and a density of 0.890-0.930 g/cc at room temp.; (c) a homogeneous mixt. of a high mol. polyisobutylene (IV) with an Mn of at least 80,000 and a polyolefin; and (d) a bis-maleimido cpd. of formula (V). In (V): R = 1-20C alkyl, opt. with ether O atom(s) in the chain, 5-7C cycloalkyl or 6-15C aryl, opt. with 1-10C alkyl, 1-6C alkoxy and/or 1-4C dialkylamino substit(s).; or an R -Z-R gp.; R , R = 1-10C alkyl, 5-7C cycloalkyl or 6-10C aryl, opt. with 1-10C alkyl, 1-6C alkoxy and/or 1-4C dialkylamino substit(s).; Z = 1-10C alkyl, 1-4C dialkylamino, -O- or -SO2-. Also claimed are: (i) a method for producing the mixt.; and (ii) films, fibres, mouldings and foam made from the mixt.

Patent Agency Ranking