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    Production of polylaurolactam
    22.
    发明专利
    Production of polylaurolactam 未知

    公开(公告)号：GB1077310A

    公开(公告)日：1967-07-26

    申请号：GB4268164

    申请日：1964-10-20

    Applicant: BASF AG

    Inventor： KUNDE JOACHIM ,  WILHELM HANS ,  METZGER HORST ,  DOERFEL HELMUT

    IPC: C08G69/16

    Abstract: Laurolactam is partially polymerized at 200-340 DEG C. and autogenous pressure in the presence of 10-300 mole per cent of water, the water is removed and the polymerization continued at 270-340 DEG C. Before polymerization the reactants may be freed of oxygen. 0.05-2 mole per cent of a chain terminator, e.g. acetic, propionic, butyric, benzoic or stearic acid or dodecylamine, may be added before or during polymerization. Other additives may be fillers, fibres, pigments and dyes. Both polymerization stages may be conducted under an inert atmosphere. The pressure of the first may be up to 73 atmospheres; that of the second atmospherics sub- or super-atmospheric. The water may be removed by releasing the pressure and heating. The products may be extruded as fibres directly from the bottom of the pressure vessel. They may be injection moulded, extruded, or fluidized bed coated to produce rods, gears, pipe, film, sheeting bristles or fibres.

    POLYMERIZATION OF '-CAPROLACTAM
    26.
    发明专利
    POLYMERIZATION OF '-CAPROLACTAM 未知

    公开(公告)号：CA1076743A

    公开(公告)日：1980-04-29

    申请号：CA266548

    申请日：1976-11-25

    Applicant: BASF AG

    Inventor： MATTHIES PAUL ,  KUNDE JOACHIM ,  HOERAUF WERNER

    IPC: C08G69/00 ,  C08G69/16

    Abstract: O.Z. 31,765 An improved process for the continuous polymerization of .epsilon.-capro-lactam in the presence of water as initiator in a vertical downward-flow tubular reactor, in which the .epsilon.-caprolactam is partially polymerized at elevated temperature in a first, mechanically agitated reaction zone and is further polymerized in further reaction zones to the desired degree of polymerization. Poly-.epsilon.-caprolactam is discharged in the form of a melt. The polymerization is carried out at a gauge pressure of from 0.2 to 0.9 bar, constant in all reaction zones. The temperature in the first reaction zone is from 260 to 295.degree.C whilst obeying the condition t ? 265 + 43 p .degree.C, wherep is the numerical value of the gauge pressure in bars.

    Production of Elastomers Containing Urethane Groups.
    27.
    发明专利
    Production of Elastomers Containing Urethane Groups. 未知

    公开(公告)号：GB1158270A

    公开(公告)日：1969-07-16

    申请号：GB5407866

    申请日：1966-12-02

    Applicant: BASF AG

    Inventor： KUNDE JOACHIM ,  WILHELM HANS ,  DOERFEL HELMUT ,  RAUCH KONRAD

    IPC: C08G18/10 ,  C08G18/42

    Abstract: 1,158,270. Polyesterurethanes. BADISCHE ANILIN- & SODA-FABRIK A.G. 2 Dec., 1966 [4 Dec., 1965], No. 54078/66. Heading C3R. Polyesterurethanes are prepared by reacting an hydroxyl group containing polyester of M.W. 500 to 5,000 which has been prepared by reacting adipic acid with a mixture of 45 to 90% by weight of 1,6-hexanediol and 10 to 55% by weight of 2,2,4-trimethylpentanediol -1,3, first with a stoichiometric excess of an organic polyisocyanate followed by reaction with a chain extender which is preferably a diamine, hydrazine, a hydrazide or a glycol. If desired the reactions are carried out in the presence of an inert polar solvent such as dimethylformamide, dimethylacetamide, tetramethylurea or dimethyl sulphoxide. Up to 50% by weight of 2,2,4-trimethylpentanediol-1,3 may be replaced by 2,2-dimethylhexanediol-1,3. Suitable polyisocyanates are 4,4 1 -diphenylmethane diisocyanate; 2,4-toluylene diisocyanate; p-phenylene diisocyanate; 1,5-naphthylene diisocyanate; 1,6-hexane diisocyanate and 4,4 1 -diphenyl (thio) ether diisocyanates. The chain extenders may be ethylene diamine; propylene diamine; n-xylylene diamine; hydrazine; carbodihydrazide; adipodihydrazide; ethylene glycol and 1,4-butane diol. The resulting polymers may be used in the production of fibres or films. The preparation of polyesters from adipic acid and a diol mixture of 45 to 90% by weight of hexanediol-1,6 and 10 to 55% by weight of 2,2,4-trimethylpentanediol- 1,3 is described in the examples. In Example 1, the ratio of hexanediol-1,6 to 2,2,4-trimethylpentanediol-1,3 is 76À4: 23À6 and in Example 2 86À6: 13À4.

    29.
    发明专利
    未知

    公开(公告)号：FR1460479A

    公开(公告)日：1966-11-25

    申请号：FR43066

    申请日：1965-12-21

    Applicant: BASF AG

    Inventor： KUNDE JOACHIM ,  WILHELM HANS ,  DOERFEL HELMUT

    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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