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    2.
    发明专利
    未知

    公开(公告)号：DE102004011346A1

    公开(公告)日：2005-09-22

    申请号：DE102004011346

    申请日：2004-03-05

    Applicant: BASF AG

    Inventor： MALOTKI PETER VON ,  HENSIEK RAINER ,  LEHMANN PIT

    IPC: C08G18/12 ,  C08G18/40 ,  C08G18/46 ,  C08G18/42 ,  C08G18/72 ,  C08J9/00

    Abstract: Production of isocyanate-based rigid foam by reacting polyisocyanates with compounds having at least 2 isocyanate-reactive hydrogen atoms, at least one of which is a polyester alcohol, comprises (A) reacting a polyester alcohol or a polyol mixture containing polyester alcohol(s) with less than the stoichiometric amount of at least difunctional isocyanate(s) to a prepolymer (I) containing urethane and hydroxyl groups, (B) reacting (I) with polyisocyanate. Independent claims are also included for the following: (1) (I) with a hydroxyl (OH) number in the 100-400 mg KOH/g range; (2) rigid isocyanate-based foams produced by this process.

    4.
    发明专利
    未知

    公开(公告)号：ES2142525T3

    公开(公告)日：2000-04-16

    申请号：ES96111811

    申请日：1996-07-23

    Applicant: BASF AG

    Inventor： VON MALOTKI PETER DR ,  HENSIEK RAINER ,  REICHELT MICHAEL

    IPC: C08G18/28

    Abstract: A fireproofed isocyanate-based rigid foam (I) is obtd. by reacting (a) polyisocyanates and/or modified polyisocyanates with (b) cpd(s). contg. isocyanate-reactive H atoms and opt. (c) low molecular wt. chain extenders and/or crosslinkers, in presence of (d) blowing agents, (e) catalysts, (f) bromine-contg. fire retardant(s) and opt. (g) other additives, etc.. Fire retardant (f) is tribromo-neopentyl alcohol (TBNPA), and the crosslinking index of all the cpds. with NCO-reactive H atoms (including (f)) is at least 3.0. Also claimed is prodn. of the foam as above.

    7.
    发明专利
    未知

    公开(公告)号：DE102005017363A1

    公开(公告)日：2006-10-19

    申请号：DE102005017363

    申请日：2005-04-14

    Applicant: BASF AG

    Inventor： LEHMANN PIT ,  MALOTKI PETER VON ,  HENSIEK RAINER ,  SCHOEN LARS

    IPC: C08J9/20 ,  C08J9/06 ,  C08L75/04

    Abstract: The invention relates to a process for producing rigid polyurethane and polyisocyanurate foams by reacting polyisocyanates a) with compounds having at least two hydrogen atoms which are reactive toward isocyanate groups b) in the presence of blowing agents c), wherein prepolymers which comprise isocyanate groups and have an NCO content in the range from 25 to 31% by weight, based on the weight of the prepolymer, and are prepared by reacting ai) mixtures of monomeric and polymeric diphenylmethane diisocyanate with at least one compound having more than one hydrogen atom which is reactive toward isocyanate groups aii) are used as polyisocyanates a) and the compounds having at least two hydrogen atoms which are reactive toward isocyanate groups b) comprise at least one polyester alcohol bi) which comprises at least one starting component which is hydrophobic.

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