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    1.
    发明专利
    未知

    公开(公告)号：DE3783292D1

    公开(公告)日：1993-02-11

    申请号：DE3783292

    申请日：1987-08-18

    Applicant: BASF AG

    Inventor： GOERRISSEN HEINER DR ,  SAENGER DIETRICH ,  SCHUETTE WILHELM DR ,  WALTER MANFRED DR

    IPC: C08K3/34 ,  C08L59/00 ,  C08L75/00 ,  C08L75/04

    Abstract: Moulding compsns. consist of (A) at least one polyoxymethylene homo- and/or copolymer, (B) at least one thermoplastic polyurethane elastomer and (C) opt. additives and (D) 0.005-2 wt.% w.r.t. the total wt. of (A) plus (B), of at least one alkaline earth silicate as additive to improve heat-stability. (D) has formula MO.xSiO2.nH2O (I) where M = alkaline earth metal, esp. Ca or Mg; X = no. 1.4-10 and n = at least zero.

    6.
    发明专利
    未知

    公开(公告)号：DE1669727B1

    公开(公告)日：1971-04-15

    申请号：DE1669727D

    申请日：1967-10-17

    Applicant: BASF AG

    Inventor： SANDER BRUNO DR ,  SCHUETTE WILHELM DR

    IPC: C08K5/20 ,  C08L59/02 ,  C08L61/20 ,  C08G37/04

    Abstract: 1,234,057. Stabilizing oxymethylene polymers by addition of a #-aminolactamide. BADISCHE ANILIN- & SODA-FABRIK A.G. ]6 Oct., 1968 [17 Oct., 1967 (2)], No. 48967/68. Heading C3P. Compositions comprise an oxymethylene polymer and a stabilizing compound of formula where R 1 is H, OH, NR 2 R 2 , -CH 2 -CH(OH)- CONH 2 , in which m is 1 to 3 and n is 1 or 2, or m is 1 and n is 1 to 3, or in which m + n is 1 to 5 and m is 1 to 5, and R 2 is H or CH 2 .CH(OH)-CONH 2 . Phenolic antioxidants and a polycondensate of isophthalic diamide, a cyclic -N,N 1 - alkylene urea having 2 to 5 carbon atoms, and formaldehyde may also be included. In the examples, trioxan-1,3- dioxolan copolymers treated with NaF are stabilized with nitrilotrilactamide or ethylene diamine tetralactamide and a conventional bisphenol.

    Inorganic sintered mouldings
    9.
    发明专利
    Inorganic sintered mouldings 未知

    公开(公告)号：DE3926869A1

    公开(公告)日：1991-02-21

    申请号：DE3926869

    申请日：1989-08-16

    Applicant: BASF AG

    Inventor： TER MAAT JOHAN HERMAN HENDRIK ,  SCHUETTE WILHELM DR ,  STERZEL HANS-JOSEF DR

    IPC: B22F3/10 ,  C04B35/634 ,  C04B35/638

    Abstract: Process for prodn. of an inorganic sintered moulding (I) comprises injection moulding or extruding a mixt. of a sinterable inorganic powder (II) and polyoxymethylene binder (III) to form a green moulding (IV), removing the binder (III) and sintering; the novelty is that (III) is removed by treatment of (IV) in a gaseous atmos. contg. an acid or BF3 gas. Treatment of (IV) is carried out at 20-150 deg.C; acid is HNO3, Halogen and/or an organic acid with b.pt. below 130 deg.C, pref. formic acid. (II) is, e.g. alumina, zirconia, yttrium oxide, SiC, Si3N4, Si powder, Fe powder, etc.; (III) is a homopolymer or copolymer of trioxan with ethylene oxide, 1,3-dioxolan, butanediol formal (V), etc., with mol.wt. 25,000-75,000.

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