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    Preparation of polyurethane based foamed materials useful in the motor vehicle industry, e.g. for vehicle interiors and ski boot linings, with decrease in decrease in odor, fogging value, and catalyst requirements
    21.
    发明专利
    Preparation of polyurethane based foamed materials useful in the motor vehicle industry, e.g. for vehicle interiors and ski boot linings, with decrease in decrease in odor, fogging value, and catalyst requirements 未知

    公开(公告)号：DE19902982A1

    公开(公告)日：2000-07-27

    申请号：DE19902982

    申请日：1999-01-26

    Applicant: BASF AG

    Inventor： SCHERZER DIETRICH ,  GAUS GUENTER ,  JACOB CHRISTOPHE ,  MOHR BERNHARD ,  LUTTER HEINZ-DIETER

    IPC: C08G18/16 ,  C08G18/20 ,  C08G18/18

    Abstract: A new method for preparing foamed materials involves the reaction of: (a) isocyanates; (b) compounds reactive to isocyanates of molecular weight 500-8500; and optionally (c) chain lengthening and/or crosslinking agents of molecular weight 60-499 in the presence of: (d) a propellant; and (e) a catalyst, and optionally (f) adjuvants and/or additives. Foamed materials are prepared by reaction of (a) isocyanates with (b) compounds reactive to isocyanates of molecular weight 500-8500 and optionally (c) chain lengthening and/or crosslinking agents of molecular weight 60-499 in the presence of (d) a propellant and (e) a catalyst, and optionally (f) adjuvants and/or additives. The isocyanate (a) is 2,4- and or 2,6-toluylenediisocyanate and/or 4,4, 2,2, and/or 2,4-diphenylmethane diisocyanate, and the reaction is carried out in the presence of (e1) 0.02-0.08 wt.% triethylenediamine and 0.05-0.3 wt.% of at least one aminoalkyl and/or aminophenyl-imidazole (e2) of formulas (I) and/or (II): where: R -R = phenyl, halogen, H, 1-10C linear or branched alkyl, 1-4C alkoxy, N-mono- or 1-4C N,N-dialkylamino, N-mono- or N,N-dialkylaminoalkylene, i.e. 1-4C alkyl and 2-4C alkylene, R = R , with the exception of halogen and alkoxy; Y = H, 2-4C hydroxalkyl, or hydroxypolyoxyalkyl with 2-20 alkylene oxide units, X (catalyst) = 2-6C alkylene or phenyl, Z = H, 1-4C alkylene, phenyl, 2-4C hydroxyalkyl, or 2-20C hydroxypolyoxyalkylene, and the weigh proportions of (e1) and (e2) are based on the weight proportion of component (b)(sic). Independent claims are included for: (1) A spongy plastic based on polyurethanes, prepared as above; (2) a mixture containing (e1) triethylenediamine and (e2) at least one aminoalkyl- and/or aminophenyl-imidazole at an e1 to e2 ratio of 1.6:1 to 0.06:1.

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