Process for the manufacture of poly-beta-amides
    1.
    发明授权
    Process for the manufacture of poly-beta-amides 失效
    制备聚β-氨基酸的方法

    公开(公告)号:US3708460A

    公开(公告)日:1973-01-02

    申请号:US3708460D

    申请日:1970-07-15

    Applicant: HOECHST AG

    Inventor: RUPP W BEERMANN C

    CPC classification number: C08G69/22

    Abstract: TO OBTAIN B-LACTAMS OF HIGH MOLECULAR WEIGHT BY ANIONIC POLYMERIZATION THE CATALYST SOLUTION OR SUSPENSION AND SIMULTANEOUSLY A SOLUTION OF THE B-LACTAM OR MIXTURE OF B-LACTAMS ARE METERED INTO THE POLYMERIZATION VESSEL CONTAINING A SOLVENT AT A TEMPERATURE OF FROM 10 TO 100* C.

    4.
    发明专利
    未知

    公开(公告)号:BR7403917D0

    公开(公告)日:1974-12-24

    申请号:BR391774

    申请日:1974-05-14

    Applicant: HOECHST AG

    Abstract: Light-stabilized synthetic linear, fiber- and film-forming polyesters are obtained by incorporating into the macromolecules composed of dicarboxylic acid and diol moieties about 0.1 to 5 mole percent of structural units of the formula IN WHICH X stands for the group WHEREIN R1, R2 and R3 each are hydrogen or an alkyl radical having from 1 to 4 carbon atoms.

Patent Agency Ranking