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    141.
    发明专利
    未知

    公开(公告)号：ES2147918T3

    公开(公告)日：2000-10-01

    申请号：ES96903976

    申请日：1996-02-03

    Applicant: BASF AG

    Inventor： WARZELHAN VOLKER ,  PIPPER GUNTER ,  SEELIGER URSULA ,  BAUER PETER ,  PAGGA UDO ,  YAMAMOTO MOTONORI

    IPC: A61L15/26 ,  A61L15/62 ,  C08G63/183 ,  C08J5/00 ,  C08G63/20 ,  C08G63/60 ,  C08G63/668 ,  C08G63/672 ,  C08G63/688 ,  C08G63/91 ,  C08J9/00 ,  C08J9/04 ,  C08L67/00 ,  C08L101/16 ,  C09J167/00 ,  D21H19/28

    Abstract: PCT No. PCT/EP96/00457 Sec. 371 Date Aug. 14, 1997 Sec. 102(e) Date Aug. 14, 1997 PCT Filed Mar. 5, 1996 PCT Pub. No. WO96/25446 PCT Pub. Date Aug. 22, 1996Biodegradable polyesters having a molecular weight (Mn) of from 5000 to 50,000 g/mol (measured by gel permeation chromatography), a viscosity number of from 30 to 350 g/ml (measured in 50:50 by weight of o-dichlorobenzene/phenol at a concentration of 0.5% by weight of polyester at 25 DEG C.), and a melting point of from 50 to 170 DEG C., and having both hydroxyl and carboxyl end groups, the molar ratio of carboxyl end groups to hydroxyl end groups being greater than one, which is obtained by reacting a mixture consisting essentially of a1) a mixture consisting essentially of from 45 to 80 mol % of adipic acid or ester-forming derivatives thereof, or mixtures thereof, from 20 to 55 mol % of terephthalic acid or ester-forming derivatives thereof, or mixtures thereof, and from 0 to 5 mol % of a sulfonate compound, where the sum of the individual mole percentages is 100 mol %, and a2) a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, in the presence of from 0.01 to 5 mol %, per mol of component a1), of a compound D having at least three groups capable of ester formation, the molar ratio of a1) to a2) being from 0.4:1 to 1.5:1, polymers and biodegradable thermoplastic molding compositions, processes for their preparation and their use for producing biodegradable moldings, adhesives, foams and blends with starch obtained from the polymers or molding compositions.

    METHOD FOR PRODUCING POLYAMIDE 6 OF A LOW EXTRACT CONTENT, HIGH VISCOSITY STABILITY AND LOW REMONOMERIZATION RATE
    142.
    发明专利
    METHOD FOR PRODUCING POLYAMIDE 6 OF A LOW EXTRACT CONTENT, HIGH VISCOSITY STABILITY AND LOW REMONOMERIZATION RATE 未知

    公开(公告)号：CA2362510A1

    公开(公告)日：2000-08-17

    申请号：CA2362510

    申请日：2000-02-10

    Applicant: BASF AG

    Inventor： MOHRSCHLADT RALF ,  YAMAMOTO MOTONORI ,  HILDEBRANDT VOLKER

    IPC: C08G69/00 ,  C08G69/04 ,  C08G69/16

    Abstract: The invention relates to a continuous method for producing polyamides by reacting at least one aminonitrile with water. The inventive method comprise s the following steps: (10) reacting at least one aminonitrile with water at a temperature of 200 to 290 ~C and a pressure of 40 to 70 bar in a stream tube which contains a Brönsted acid catalyst, selected from a beta zeolite, phyllosilicate or metal oxide catalyst in the form of a static catalyst, (11 ) addition of heat and expansion or adiabatic expansion of the reaction mixtur e of step (1) in a first deposition zone to a pressure of 20 to 40 bar, the pressure being at least 10 bar less than the pressure in step (1), and to a temperature in the range of from 220 to 290 ~C, flash evaporation and remova l of ammonia, water and optionally monomers and oligomers of the aminonitrile, (12) further reacting the reaction mixture of step (2) while adding water at a temperature of 200 to 290 ~C and a pressure of 25 to 55 bar, said reaction being optionally carried out in the presence of a Brönsted acid catalyst, selected from a beta zeolite, phyllosilicate or metal oxide catalyst in the form of a static catalyst, (13) addition of heat and expansion or adiabatic expansion of the reaction mixture of step (3) in a second deposition zone to a pressure of 0.01 to 20 bar, with the pressure being at least 20 bar less tha n the pressure in step (3), and to a temperature in the range of from 200 to 2 90 ~C, flash evaporation and removal of ammonia, water and optionally monomers and oligomers of the aminonitrile.

    149.
    发明专利
    未知

    公开(公告)号：DK0809666T3

    公开(公告)日：1999-06-28

    申请号：DK96902980

    申请日：1996-02-03

    Applicant: BASF AG

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

    IPC: C08J9/04 ,  C08G63/60 ,  C08G63/66 ,  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.

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