PROCESS FOR THE PREPARATION OF POLYETHER-POLYOL MIXTURES CONTAINING S-TRIAZINE RESIDUES

    公开(公告)号:DE3570884D1

    公开(公告)日:1989-07-13

    申请号:DE3570884

    申请日:1985-03-21

    Applicant: BASF AG

    Abstract: The invention relates to s-triazine radical-containing polyether polyol mixtures having functionalities of from 2 to 6 and hydroxyl numbers of from 210 to 640, prepared by the oxyalkylation of a mixture of one or more polyamino-1,3,5-triazines, preferably melamine, and an alkanol having a hydroxyl functionality of from 2 to 6 and having 2 to 18 carbon atoms, water, or their mixtures, in the absence of catalysts and conventional inert polar solvents. The resulting polyether polyol mixtures are suitable for the preparation of rigid polyurethane, polyisocyanurate, and urethane group-containing polyisocyanuate foams produced by means of the polyisocyanate polyaddition process.

    2.
    发明专利
    未知

    公开(公告)号:DE3412082A1

    公开(公告)日:1985-10-03

    申请号:DE3412082

    申请日:1984-03-31

    Applicant: BASF AG

    Abstract: The invention relates to s-triazine radical-containing polyether polyol mixtures having functionalities of from 2 to 6 and hydroxyl numbers of from 210 to 640, prepared by the oxyalkylation of a mixture of one or more polyamino-1,3,5-triazines, preferably melamine, and an alkanol having a hydroxyl functionality of from 2 to 6 and having 2 to 18 carbon atoms, water, or their mixtures, in the absence of catalysts and conventional inert polar solvents. The resulting polyether polyol mixtures are suitable for the preparation of rigid polyurethane, polyisocyanurate, and urethane group-containing polyisocyanuate foams produced by means of the polyisocyanate polyaddition process.

    5.
    发明专利
    未知

    公开(公告)号:DE19505035A1

    公开(公告)日:1996-08-22

    申请号:DE19505035

    申请日:1995-02-15

    Applicant: BASF AG

    Abstract: A process for producing polyisocyanates containing one or more biuret groups, by reacting a) an aliphatic or cycloaliphatic isocyanate with several isocyanate groups (isocyanate a) with b) a tertiary alcohol or a mixture of water and a tertiary alcohol (biuretting agent b) at reaction temperature of 100 to 250 DEG C, said process being characterized in that the reaction is conducted in the presence of c) a stabiliser (c) in which there are catalytic quantities of urea, ammonia, biuret, a urea derivative of the formula (I), in which R , R , R and R are hydrogen, C1-C10 alkyl or C5-C10 aryl, or a carbonic acid amide of formula (II) in which R is C1-C12 alkyl group, in which 1, 2 or 3 hydrogen atoms may be replaced by a (III) radical.

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