22.
    发明专利
    未知

    公开(公告)号:DE502005004039D1

    公开(公告)日:2008-06-19

    申请号:DE502005004039

    申请日:2005-07-30

    Applicant: BASF SE

    Abstract: Process for preparation of high-molecular-weight polyamides, which comprises reacting a polyamide A) at a temperature of from 150 to 350° C. with a compound B) which at this reaction temperature liberates isocyanic acid, where the concentration of the amino end groups in the polyamide A) used is greater than or equal to the concentration of the carboxy end groups.

    23.
    发明专利
    未知

    公开(公告)号:AT394444T

    公开(公告)日:2008-05-15

    申请号:AT05777287

    申请日:2005-07-30

    Applicant: BASF SE

    Abstract: Process for preparation of high-molecular-weight polyamides, which comprises reacting a polyamide A) at a temperature of from 150 to 350° C. with a compound B) which at this reaction temperature liberates isocyanic acid, where the concentration of the amino end groups in the polyamide A) used is greater than or equal to the concentration of the carboxy end groups.

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