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    STABILIZED MOLDING COMPOSITIONS ON THE BASIS OF POLYOXYMETHYLENES
    21.
    发明专利
    STABILIZED MOLDING COMPOSITIONS ON THE BASIS OF POLYOXYMETHYLENES 未知

    公开(公告)号：CA964791A

    公开(公告)日：1975-03-18

    申请号：CA120887

    申请日：1971-08-19

    Applicant: HOECHST AG

    Inventor： WOLTERS ERNST ,  ROOS GUNTHER

    IPC: C08L71/02 ,  C08G2/08 ,  C08G2/10 ,  C08K5/103 ,  C08K5/134

    Abstract: Procedure for obtaining stabilized polyoxymethylene molding compounds, characterized in that it comprises: A) mixing: 1) 0.05 to 4% by weight, based on polyoxymethylene, of compounds of the formula ** formula ** Where R1 is a residue of alkyl with 1 to 6 carbon atoms, R2 is a hydrogen atom or an alkyl residue with 1 to 6 carbon atoms, A is a bi- to hexavalent aliphatic hydrocarbon residue, with 1 to 12 carbon atoms, m is 0 or an integer from 1 to 6 and n corresponds to the valence of A, with: 2) 0.01 to 3% by weight, based on polyoxymethylene, of alkaline earth salts of carboxylic acids with 10 to 20 carbon atoms and/or alkaline earth hydroxides and, B) incorporating the obtained mixture into the polyoxymethylene as a stabilizer, either in powder form, through mixers, for example dry mixers or dissolved in a suitable solvent, for example methanol, acetone or methyl chloride, which is stirred on the polymer, returning to evaporating the solvent, optionally then granulating in a commercially available extrusion press. (Machine-translation by Google Translate, not legally binding)

    MOULDING COMPOSITION
    24.
    发明专利
    MOULDING COMPOSITION 未知

    公开(公告)号：AU5239673A

    公开(公告)日：1974-08-22

    申请号：AU5239673

    申请日：1973-02-21

    Applicant: HOECHST AG

    Inventor： SEXTRO GUNTER ,  BURG KARLHEIMZ ,  KERN RUDOLF ,  SCHMIDT HEINZ ,  WOLTERS ERNST

    IPC: C08L59/00 ,  C08L59/02 ,  C08G37/04

    Abstract: A thermoplastic molding composition is composed of a linear poly(oxymethylene) and a graft copolymer the side chains of which consist essentially of oxymethylene groups. The said graft copolymer acts as a nucleating agent; its effectiveness is dependent on its amount, molecular weight and degree of grafting. Molded articles made of said composition show improved mechanical properties.

    30.
    发明专利
    未知

    公开(公告)号：FI56021B

    公开(公告)日：1979-07-31

    申请号：FI242771

    申请日：1971-08-31

    Applicant: HOECHST AG

    Inventor： WOLTERS ERNST ,  ROOS GUENTHER

    IPC: C08L71/02 ,  C08G2/08 ,  C08G2/10 ,  C08K5/103 ,  C08K5/134 ,  C08K5/10 ,  C08L59/00

    Abstract: Procedure for obtaining stabilized polyoxymethylene molding compounds, characterized in that it comprises: A) mixing: 1) 0.05 to 4% by weight, based on polyoxymethylene, of compounds of the formula ** formula ** Where R1 is a residue of alkyl with 1 to 6 carbon atoms, R2 is a hydrogen atom or an alkyl residue with 1 to 6 carbon atoms, A is a bi- to hexavalent aliphatic hydrocarbon residue, with 1 to 12 carbon atoms, m is 0 or an integer from 1 to 6 and n corresponds to the valence of A, with: 2) 0.01 to 3% by weight, based on polyoxymethylene, of alkaline earth salts of carboxylic acids with 10 to 20 carbon atoms and/or alkaline earth hydroxides and, B) incorporating the obtained mixture into the polyoxymethylene as a stabilizer, either in powder form, through mixers, for example dry mixers or dissolved in a suitable solvent, for example methanol, acetone or methyl chloride, which is stirred on the polymer, returning to evaporating the solvent, optionally then granulating in a commercially available extrusion press. (Machine-translation by Google Translate, not legally binding)

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