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    Process for the anionic polymerization of lactams
    3.
    发明授权
    Process for the anionic polymerization of lactams 失效
    LACTAMS的阴离子聚合方法

    公开(公告)号：US3793258A

    公开(公告)日：1974-02-19

    申请号：US3793258D

    申请日：1971-07-16

    Applicant: BAYER AG

    Inventor： REINKING K ,  BRASSAT B ,  SCHNEIDER K

    IPC: C08G69/20 ,  C08G20/18

    CPC classification number: C08G69/20

    Abstract: THE INVENTION RELATES TO AN IMPROVED PROCESS FOR THE ANIONIC POLYMERIZATION OF A LACTAM HAVIMG ATLEAST 5 RING MEMBERS IN THE PRESENCE OF AN ALKALINE CATALYST AND AN ACTIVATOR, WHEREIN AN ALKALI METAL LACTAMATE, THE CATALYST, DISSOLVED IN A MIXTURE OF A A-PYRROLIDONE AND A LACTAM MEMBER SELECTED FROM THE GROUPS CONSISTING OF A SINGLE LACTAMAND A MIXTURE OF LACTAMS HAVING AT LEAST 6 RING MEMBERS, IS ADDED TO THE LACTAM MELT CONTAINING THE ACTIVATOR.

    Transparent,thermoplastically formable copolyamides from bis(4-amino cyclohexyl)methane-aromatic dicarboxylic acid epsilon-caprolactam
    4.
    发明授权
    Transparent,thermoplastically formable copolyamides from bis(4-amino cyclohexyl)methane-aromatic dicarboxylic acid epsilon-caprolactam 失效
    透明的热塑性酚醛树脂（4-氨基环己基）甲烷 - 芳族二羧酸EPSILON-CAPROLACTAM

    公开(公告)号：US3847877A

    公开(公告)日：1974-11-12

    申请号：US31137172

    申请日：1972-12-01

    Applicant: BAYER AG

    Inventor： NIELINGER W ,  RUDOLPH H ,  DHEIN R ,  SCHNEIDER K

    IPC: C08G69/00 ,  C08G69/36 ,  C08G20/12 ,  C08G20/20

    CPC classification number: C08G69/36

    Abstract: 1. TRANSPARENT ORGANIC SOLVENT RESISTANT THERMOPLASTICALLY FORMABLY COPOLYAMIDES, OBTAINED BY POLYCONDENSATION OF BIS-(4-AMINO CYCLOHEXYL)-METHANE, AT LEAST ONE AROMATIC DICARBOXYLIC ACID AND E-CAPROLACTAM, WITH A RELATIVE SOLUTION VISCOSITY OF AT LEAST 1:5 AS MEASURED IN A 1% M-CRESOL SOLUTION AT 25* C. CONSISTING OF: (1) FROM 70 TO 35% BY WEIGHT OF EQUIMOLAR QUANTITIES OF AMINO UNITS (A) OF THE GENERAL FORMULA

    -NH-(CYCLOHEX-1,4-YLENE)-CH2-(CYCLOHEX-1,4-YLENE)-NH-

    AND OF AROMATIC DICARBOXYLIC ACID UNITS (B) OF THE GENERAL FORMULA

    -CO-(1,4-PHENYLENE)-CO- OR -CO-(1,3-PHENYLENE)-CO-

    AND (2) FROM 30 TO 65% BY WEIGHT OF LACTAM UNITS (C) OF THE GENRAL FORMULA

    -CO-(CH2)5-N

    Transparent thermoplastically-formable polyamides
    5.
    发明授权
    Transparent thermoplastically-formable polyamides 失效
    透明的热塑性聚氨酯

    公开(公告)号：US3808181A

    公开(公告)日：1974-04-30

    申请号：US16192771

    申请日：1971-07-09

    Applicant: BAYER AG

    Inventor： NIELINGER W ,  RUDOLPH H ,  SCHNEIDER K

    IPC: C08G69/26 ,  C08G20/20

    CPC classification number: C08G69/265

    Abstract: THE INVENTION RELATES TO TRANSPARENT THERMOPLASTICALLY PROCESSABLE POLYAMIDES AND TO A PROCESS FOR THEIR PRODUCTION FROM BIS-(4-AMINOCYCLOHEXYL)-METHANE AND 3ETHYL-1,10-DECANE DICARBOXYLIC ACID, OPTIONALLY IN CONJUNCTION WITH OTHER DICARBOXYLIC ACIDS, OR FROM DERIVATIVES OF THE ACIDS. THE INVENTION ALSO RELATES TO A PROCESS FOR THE PRODUCTION OF TRANSPARENT THERMOPLASTICALLY PROCESSABLE POLYAMIDES WHICH COMPRISES POLYCONDENSING BIS(4-AMINO-CYCLOHEXYL)-METHAANE, FROM 40 TO 70% OF WHOSE CYCLOHEXANE RINGS ARE TRANS-ORIENTED WITH A DICARBOXYLIC ACID, OR AN ESTER OR ACID DERIVATIVE THEREOF, WHICH DICARBOXYLIC ACID COMPRISES FROM 5 TO 100 MOL PERCENT OF 3ETHYL-1,10-DECANE DICARBOXYLIC ACIDD AND FROM 0 TO 95 MOL PERCENT OF AN ADDITIONAL DICARBOXYLIC ACID OR ACIDS HAVING 6 TO 16 CARBON ATOMS.

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