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    Inherently light- and heat-stabilised polyamide prodn.
    2.
    发明专利
    Inherently light- and heat-stabilised polyamide prodn. 未知

    公开(公告)号：DE4429089A1

    公开(公告)日：1996-02-22

    申请号：DE4429089

    申请日：1994-08-17

    Applicant: BASF AG

    Inventor： WEINERTH KLAUS DR ,  MELL KARLHEINZ ,  MATTHIES PAUL DR ,  BEER LUDWIG DR

    IPC: C08G69/48 ,  C08K5/3435 ,  C08G69/04 ,  C08L77/00 ,  D01F6/60 ,  D01F6/80

    Abstract: Prodn. of polyamides (I) comprises polymerisation or polycondensation of monomers in presence of triacetone- diamine cpd(s) of formula (II), where R is H, 1-20C hydrocarbyl, pref. 1-18C alkyl, or benzyl. Also claimed are (i) inherently light-stabilised polyamides (I) with amine residues derived by removing H from the NH2 gp. of (II) chemically bonded to the polymer chain; (ii) a process for the prodn. of polycaprolactam-based filaments from (I), by high-speed spinning with take-off speeds of at least 4000 m/min.; (iii) filaments obtd. by this process; and (iv) fibres and textile sheets produced from the filaments.

    7.
    发明专利
    未知

    公开(公告)号：DE2214775A1

    公开(公告)日：1973-10-04

    申请号：DE2214775

    申请日：1972-03-25

    Applicant: BASF AG

    Inventor： BEER LUDWIG DR

    IPC: C08G63/00 ,  C01G23/053 ,  C07C67/03 ,  C07C69/82 ,  C08G63/183 ,  C08G63/82 ,  C08G63/85 ,  D01F6/62 ,  C08G17/015

    Abstract: 1415467 Titanium-containing catalyst BADISCHE ANILIN- & SODA FABRIK AG 23 March 1973 [25 March 1972] 14120/73 Heading C2C [Also in Division C3] A catalyst for the manufacture of polybutylene terephthalate (see Division C3) is made by reacting in aqueous medium (a) freshly precipitated titanium dioxide (b) a hydroxycarboxylic acid of formula where R is -H, -CH 3 , -CH 2 OH, -CH 2 COOH or -CH(OH)COOH and R 1 is -H or -CH 2 COOH and/or a tertiary aliphatic amine. The titanium dioxide may be prepared by the hydrolysis in situ of a titanium compound, e.g. tetrabutyl titanate. In example the reactants used were for (h) glycolic, malic, tartaric or citric acid and for (c) trimethylamine, triethylamine or tributylamine.

    8.
    发明专利
    未知

    公开(公告)号：DE1958777A1

    公开(公告)日：1971-05-27

    申请号：DE1958777

    申请日：1969-11-22

    Applicant: BASF AG

    Inventor： BEER LUDWIG DR ,  FISCHER HERMANN DR DIPL-ING ,  HEIL EDUARD DIPL-ING

    IPC: C08G63/00 ,  B01J14/00 ,  C08G63/78 ,  C08G17/01

    Abstract: 1321115 Polymerisation apparatus BADISCHE ANILIN-& SODA-FABRIK AG 20 Nov 1970 [22 Nov 1969] 55205/70 Heading B1X [Also in Division C3] Apparatus used in the production of linear polyester by a continuous process in which diglycol terephthalate and/or its precondensate are polycondensed, optionally in the presence of other polyester-forming components, at a temperature of 240‹-300‹C at reduced pressure, comprise a bundle of stationary, substantially vertical heated tubes 1 surrounded by heating jacket 2 containing heating medium 3 immediately above which is located at least one hold tank 4, which may be heated, connected to a vacuum at outlet 5, the major portion or all of the heat required to heat the reaction mixture and evaporate the volatile portions thereof being applied to the tubes. Liquid catching surfaces 6 may be provided between tank 4 and vacuum outlet 5. The heating jacket surrounding the bundle of tubes may be divided into two separate zones, the temperature of the heating medium in the upper zone being higher than that in the lower zone. Bottle necks may be provided in the tubes by squeezing them to provide slot-like depressions using a suitable die or by inserting orifice plates or capillaries.

    Poly:amide(s) with inherent thermal stability
    9.
    发明专利
    Poly:amide(s) with inherent thermal stability 未知

    公开(公告)号：DE4413177A1

    公开(公告)日：1995-10-19

    申请号：DE4413177

    申请日：1994-04-15

    Applicant: BASF AG

    Inventor： WEINERTH KLAUS DR ,  MELL KARLHEINZ ,  MATTHIES PAUL DR ,  BEER LUDWIG DR

    IPC: C08G69/48 ,  C08K5/3435 ,  C08G69/02 ,  C08G69/04 ,  C08L77/00 ,  D01F6/60

    Abstract: The prodn. of polyamides (I) comprises polymerisation or polycondensation of the corresp. monomers in the presence of triacetone-diamine cpd(s). of formula (II). R = H or 1-20C hydrocarbyl, pref. 1-18C alkyl or benzyl. Also claimed are polyamides with inherent thermal stability, contg. a -NH-linked residue derived from (II) in the polymer chain. Also claimed is a process for the prodn. of filaments based on polycaprolactam modified with (II) as above, by melt spinning with take-off speeds of at least 4000 m/min. Also claimed are filaments obtd. by this process and fibres and sheet materials made from these filaments.

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