21.
    发明专利
    未知

    公开(公告)号:DE4218791A1

    公开(公告)日:1993-12-09

    申请号:DE4218791

    申请日:1992-06-06

    Applicant: BASF AG

    Abstract: The invention relates to a process for the preparation of compact or cellulose elastomers containing urethane and urea groups by reacting a) at least one organic and/or modified organic polyisocyanate with b) at least one N-propoxylated polyoxyalkylene-polyamine containing at least 50% of secondary amino groups or a mixture of said N-propoxylated polyoxyalkylene-polyamines and polyoxyalkylene-polyamines having 2 to 4 primary amino groups and molecular weights of from 1,000 to 8,000, and c) at least alkyl-substituted aromatic polyamine having a molecular weight of up to 500, in the presence or absence of d) catalysts, and optionally e) blowing agents, f) auxiliaries and/or g) additives. om

    22.
    发明专利
    未知

    公开(公告)号:DE4000014A1

    公开(公告)日:1991-07-04

    申请号:DE4000014

    申请日:1990-01-02

    Applicant: BASF AG

    Abstract: The invention relates to a process for the production of elastic, compact or cellular moldings based on elastomers containing N-substituted urea and amide groups in bound form, by reacting a) one or more organic and/or modified organic polyisocyanate with b) a polyazomethine-containing polyoxyalkylene-polyamine mixture (b) which contains: bi) one or more polyoxyalkylene-polyaldimine and/or polyketimine, bii) one or more polyoxyalkylene-polyamine containing terminal secondary amino groups, and, if desired, biii) one or more polyoxyalkylene-polyamine containing terminal primary amino groups and c) one or more alkyl-substituted aromatic polyamine having a molcular weight of up to 500, in the presence or absence of d) catalyst, and, if appropriate, e) blowing agents, f) auxiliaries and/or g) additives, to polyazomethine containing polyoxyalkylene - polyamine mixtures which can be used for this purpose and to the prepared elastomers.

    24.
    发明专利
    未知

    公开(公告)号:DE3710432A1

    公开(公告)日:1988-10-06

    申请号:DE3710432

    申请日:1987-03-28

    Applicant: BASF AG

    Abstract: The subject of this invention is elastomers containing polyamide groups and polyurea groups in bonded form, which are prepared by the reaction of (a) at least one organic polyisocyanate and/or a modified polyisocyanate mixture having an NCO content of from 8 to 33.6 weight percent, (b) at least one polyazomethine and (c) at least one alkyl-substituted aromatic polyamine having a molecular weight up to 500, in the presence of or in the absence of (d) catalysts, whereby reaction products of polyoxyalkylenepolyamines, having a functionality of from 2 to 4 and an average molecular weight of from 180 to 10,000 and at least one organic aldehyde and/or preferably ketone, are used as the polyazomethines.

Patent Agency Ranking