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    11.
    发明专利
    未知

    公开(公告)号：AT246997B

    公开(公告)日：1966-05-10

    申请号：AT1030264

    申请日：1964-12-04

    Applicant: BASF AG

    Inventor： GEHM ROBERT DR ,  KUNDE JOACHIM DR ,  MERTES FRIEDRICH DR

    IPC: C08G18/10

    Abstract: Elastic moulded polyurethane articles are prepared by reacting in solution in an inert polar solvent a linear isocyanate modified polyhydroxyl compound of M.W. 750-6000 and a melting point below 50 DEG C. having terminal -NCO groups with a dihydrazino-di-s-triazino compound in which monohydrazino-s-triazines are linked via a bivalent diamine radical, and moulding the resulting solution while removing the solvent by heating. The dihydrazino compound may have the formula where A is a diamine radical attached to the triazine rings via its nitrogen atoms and B is hydrogen chlorine or a monovalent aliphatic or aromatic group of 1-8 C or -OR, or -NR1R2, where R1 and R2 are hydrogen or monovalent aliphatic or aromatic groups of 1-8 C.

    13.
    发明专利
    未知

    公开(公告)号：DE2146885A1

    公开(公告)日：1973-03-29

    申请号：DE2146885

    申请日：1971-09-20

    Applicant: BASF AG

    Inventor： BECHT GUENTER DR ,  MATTHIAS KLAUS DR ,  KUNDE JOACHIM DR ,  POHLEMANN HEINZ DR ,  RAMLOW GERHARD DR

    IPC: C08L77/00 ,  D01F6/60 ,  D01F7/04

    Abstract: 1394835 Polyamide filaments BADISCHE ANILIN- & SODA-FABRIK AG 19 Sept 1972 [20 Sept 1971] 43258/72 Heading B5B Filaments of synthetic linear polyamides containing 2-15% by weight of an alkoxylated polyamide, preferably 4 to 10%, are made by subjecting a molten mixture thereof to thorough mixing so that the alkoxylated polyamide is present in the finished filaments in the form of particles having a diameter of not more than 0À1 Á, and filtering the molten mixture at least once through a filter having a pore width of not more than 20 Á, after which the mixture, optionally after being converted to chip form, is melt spun, the molten mixture being maintained in the molten state for a total period of not more than 30 minutes, and without the melt temperature exceeding 290‹ C. Mixing and filtration may be effected in the spinning apparatus by using a spinning extruder capable of providing thorough mixing and placing a filter immediately downstream of the spinning nozzle. The spun filament may be drawn at ratios of 1 : 2À5 to 1 : 45. Filaments so made have a greatly reduced tendency to build up electrostatic charges.

    15.
    发明专利
    未知

    公开(公告)号：AT254522B

    公开(公告)日：1967-05-26

    申请号：AT1160765

    申请日：1965-12-23

    Applicant: BASF AG

    Inventor： KUNDE JOACHIM DR ,  WILHELM HANS DR ,  DOERFEL HELMUT DR

    IPC: C08G18/10 ,  C08G18/42

    Abstract: Mouldings are prepared from elastomers containing urethane groups and/or urea and/or semicarbazide groups. The elastomers are prepared by reacting a polyester having at least two hydroxyl groups prepared from adipic acid and a mixture of 45-90% by wt. 1,6-hexanediol and 10-55% by wt. 2,2-dimethyl, 1,3-hexanediol, first with a polyisocyanate and then with a chain extender. The process may be carried out in the presence of an unreactive polar solvent. Up to 10% by wt. of the adipic acid may be replaced by other dicarboxylic acids, e.g. sebacic, pimelic, suberic or isophthalic acids.

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