13.
    发明专利
    未知

    公开(公告)号:DE502005001905D1

    公开(公告)日:2007-12-20

    申请号:DE502005001905

    申请日:2005-05-17

    Applicant: BASF AG

    Abstract: A process for removing residual monomers from polyoxymethylene homo- or copolymers, comprising the following process steps: a) the residual monomers are removed in gaseous form as vapors from the polymer in a devolatilization apparatus, b) the residual monomer vapors are removed through a vapor pipe, c) the residual monomers are condensed from the vapors in a condensation apparatus at from 1.09 to 102.4 bar and from 102 to 230° C., the temperature not falling below 102° C. at any point of the condensation apparatus, and those surfaces of the condensation apparatus which come into contact with the vapors being coated with a liquid film of condensed residual monomers.

    17.
    发明专利
    未知

    公开(公告)号:AT377611T

    公开(公告)日:2007-11-15

    申请号:AT05750544

    申请日:2005-05-17

    Applicant: BASF AG

    Abstract: A process for removing residual monomers from polyoxymethylene homo- or copolymers, comprising the following process steps: a) the residual monomers are removed in gaseous form as vapors from the polymer in a devolatilization apparatus, b) the residual monomer vapors are removed through a vapor pipe, c) the residual monomers are condensed from the vapors in a condensation apparatus at from 1.09 to 102.4 bar and from 102 to 230° C., the temperature not falling below 102° C. at any point of the condensation apparatus, and those surfaces of the condensation apparatus which come into contact with the vapors being coated with a liquid film of condensed residual monomers.

    18.
    发明专利
    未知

    公开(公告)号:AT334169T

    公开(公告)日:2006-08-15

    申请号:AT04729360

    申请日:2004-04-24

    Applicant: BASF AG

    Abstract: Thermoplastic molding compositions, comprising A) from 15 to 99.94% by weight of a polyoxymethylene homo- or copolymer B) from 0.05 to 10% by weight of a nonpolar polypropylene wax, C) from 0.01 to 5% by weight of at least one ester or amide of saturated or unsaturated aliphatic carboxylic acids having from 10 to 40 carbon atoms with saturated aliphatic alcohols or amines having from 2 to 40 carbon atoms, D) from 0 to 80% by weight of other additives, where the total of the percentages by weight of components A) to D) is always 100%.

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