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    13.
    发明专利
    未知

    公开(公告)号：ES2122792T5

    公开(公告)日：2003-02-16

    申请号：ES96902980

    申请日：1996-02-03

    Applicant: BASF AG

    Inventor： WARZELHAN VOLKER ,  PIPPER GUNTER ,  SEELIGER URSULA ,  BAUER PETER ,  BEIMBORN DIETER BERNHARD ,  YAMAMOTO MOTONORI

    IPC: C08G63/60 ,  C08G63/66 ,  C08J9/04 ,  C08G63/672 ,  C08G63/91 ,  C08L3/00 ,  C08L67/00 ,  C08L101/16 ,  C09J167/00 ,  D21H19/28

    Abstract: PCT No. PCT/EP96/00458 Sec. 371 Date Aug. 14, 1997 Sec. 102(e) Date Aug. 14, 1997 PCT Filed Feb. 3, 1996 PCT Pub. No. WO96/25448 PCT Pub. Date Aug. 22, 1996Biodegradable polymers comprising a polyether ester P1 obtained by reacting a first mixture of 20-95 mol% of adipic acid or ester-forming derivatives thereof or mixtures thereof, 5-80 mol% of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0-5 mol% of a compound containing sulfonate groups, and a second mixture of 15-99.8 mol% of a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, 85-0.2 mol% of a dihydroxy compound IHO-[(CH2)n-O]m-H(n=2, 3 or 4, m=2-250) with 0-5 mol%, based on the first mixture, of a compound D having at least three groups capable of ester formation, and a bisoxazoline C1, their preparation and their use in the manufacture of biodegradable molding materials.

    15.
    发明专利
    未知

    公开(公告)号：BR0015986A

    公开(公告)日：2002-08-27

    申请号：BR0015986

    申请日：2000-11-15

    Applicant: BASF AG

    Inventor： DEININGER J RGEN ,  GOTZ WALTER ,  LUDWIG ALFONS ,  PIPPER GUNTER

    IPC: C08J5/18 ,  C08G69/00 ,  C08G69/02 ,  C08G69/04 ,  C08G69/14 ,  C08G69/26 ,  C08G69/28 ,  C08G69/36 ,  C08G69/48 ,  D01F6/80

    Abstract: A process for continuous production of copolyamides based on a lactam (I), a diamine (II) and a dicarboxylic acid (III) comprisesreacting a mixture (IV) comprising a diamine (II), a dicarboxylic acid (III) and water in a first reaction zone at a pressure in the range from 1.3*10 to 2.5*10 Pa in the entry zone of the reaction zone and at a temperature above the melting point of polymer (V) to a conversion, based on the molar amounts of diamine (II) and dicarboxylic acid (III), of at least 80% to form a polymer (V),reacting a mixture (VI) comprising lactam (I) and water in a second reaction zone at a pressure in the range from 5*10 to 40*10 Pa and at a temperature above the melting point of polymer (VII) to a conversion, based on the molar amount of lactam (I), of at least 80% to form a polymer (VII),then reacting polymer (V) and polymer (VII) with each other in a third reaction zone at a pressure in the range from 1*10 to 1.5*10 Pa in the entry zone of the reaction zone at temperatures above the melting point of polymer (VIII) to form a polymer (VIII), said polymer (VIII) having a 95° C. water extractables content, based on lactam (I), diamine (II) and dicarboxylic acid (III), of not more than 10% by weight, andthen extracting the polymer (VIII) with water to obtain the copolyamide.

    16.
    发明专利
    未知

    公开(公告)号：TR200001511T2

    公开(公告)日：2002-07-22

    申请号：TR200001511

    申请日：1998-11-24

    Applicant: BASF AG

    Inventor： HILDENBRAND PETER ,  LANG REINHARD ,  LUDWIG ALFONS ,  PIPPER GUNTER

    IPC: B29B9/16 ,  C08J3/12 ,  C08G69/16 ,  C08G69/46

    Abstract: A process for continuous extraction of polyamide particles in an essentially vertical extraction column using an aqueous extractant comprises using an extraction column that is divided into two zones and performing an extraction with a recirculating 15-40% strength by weight aqueous epsi-caprolactam solution in the first zone and then with countercurrent water at a from 5 to 40° C. lower temperature in the second zone. The process provides for economical extraction of polyamides with a low level of monomers and oligomers.

    Continuous production of copolyamides based on a lactam, a diamine and a dicarboxylic acid , useful for the production of fibers, sheet and molded articles comprises a three step reaction sequence.
    18.
    发明专利
    Continuous production of copolyamides based on a lactam, a diamine and a dicarboxylic acid , useful for the production of fibers, sheet and molded articles comprises a three step reaction sequence. 未知

    公开(公告)号：DE19957663A1

    公开(公告)日：2001-05-31

    申请号：DE19957663

    申请日：1999-11-30

    Applicant: BASF AG

    Inventor： DEININGER JUERGEN ,  GOETZ WALTER ,  LUDWIG ALFONS ,  PIPPER GUNTER

    IPC: C08J5/18 ,  C08G69/00 ,  C08G69/02 ,  C08G69/04 ,  C08G69/14 ,  C08G69/26 ,  C08G69/28 ,  C08G69/36 ,  C08G69/48 ,  D01F6/80 ,  C08L77/00 ,  D01F6/60

    Abstract: Continuous production of copolyamides (I) based on a lactam (A), a diamine (B) and a dicarboxylic acid (C) comprises a three step reaction sequence to form a polymer containing up to 10 wt.% material extractable by hot water at 95 deg C comprising (A), (B) or (C). The polymer is extracted with water to form the copolyamide product (I). A process for the continuous production of copolyamides (I) based on a lactam (A), a diamine (B) and a dicarboxylic acid (C) comprises conversion of a mixture comprising diamine (B), dicarboxylic acid (C) and water in a first reaction zone at 1.3x10 -2.5x10 Pa to a degree of conversion of at least 80 % (with respect to molar quantities of (B) and (C)) to form a polymer (D) at a temperature above the m.pt. of (D) and conversion of a mixture comprising lactam (A) and water in a second reaction zone at 5x10 -40x10 Pa to a degree of conversion of at least 80 % (with respect to molar quantity of (A)) to form a polymer (E) at above the m.pt. of (E) followed by reaction of (D) and (E) in a third reaction zone at 1x10 -1.5x10 to form a polymer (F) at above the m.pt. of (F) whereby (F) contains up to 10 wt.% material extractable by hot water at 95 deg C comprising (A), (B) and/or (C). The polymer (F) is extracted with water to form the copolyamide product (I). Independent claims are included for the copolyamide product (I) and fiber, sheet and molded articles produced using (I).

    METHOD FOR PRODUCING POLYAMIDES
    19.
    发明专利
    METHOD FOR PRODUCING POLYAMIDES 未知

    公开(公告)号：BG104699A

    公开(公告)日：2001-05-31

    申请号：BG10469900

    申请日：2000-08-17

    Applicant: BASF AG

    Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  PIPPER GUNTER ,  FUCHS EBERHARD

    IPC: C08G69/18 ,  C08G69/20

    Abstract: The invention relates to a method for producing polyamides by polymerization of lactams in the presence of metal oxides as heterogeneous catalysts. According to the invention, the metal oxides are placed inside a mold which permits mechanical separation from the reaction mixture and are removed from the reaction mixture during or after completion of the polymerization. 9 claims

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