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    46.
    发明专利
    未知

    公开(公告)号：AT140938T

    公开(公告)日：1996-08-15

    申请号：AT92119790

    申请日：1992-11-20

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  MUELLER ULRICH DR ,  HOELDERICH WOLFGANG PROF DR ,  TADDEY RUDOLF ,  TINTELNOT DIETER ,  SCHUSTER LUDWIG DR

    IPC: B65D1/12 ,  B65D6/14 ,  C08G18/08 ,  C08G18/10 ,  C08G18/12 ,  C08G18/66 ,  C08J9/00 ,  C08J9/02 ,  C08J9/34 ,  C08K3/04 ,  C08K3/36 ,  C08K7/24 ,  C08L75/00

    Abstract: The invention relates to a process for the preparation of chlorofluorocarbon-free (CFC-free), elastomeric, semi-rigid or rigid mouldings containing urethane groups or urethane and urea groups and having a cellular core and a compacted peripheral zone with an essentially pore-free, smooth surface, by reacting a) organic and/or modified organic polyisocyanates with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms and optionally c) low-molecular-weight chain extenders and/or crosslinking agents, in the presence of d) blowing agents, e) catalysts, f) at least one microporous activated charcoal and/or a microporous carbon molecular sieve, which preferably has a mean pore diameter with more than 40% in the range from 0.3 to 3 nm, a pore volume of from 0.20 to 1.4 ml/g and a BET surface area of from 500 to 2500 m /g or greater, and optionally further additives and g) auxiliaries, in a closed mould with compaction.

    48.
    发明专利
    未知

    公开(公告)号：ES2064802T3

    公开(公告)日：1995-02-01

    申请号：ES91107075

    申请日：1991-05-02

    Applicant: BASF AG

    Inventor： HENN ROLF DR ,  HINZ WERNER DR ,  SCHUSTER LUDWIG DR ,  VORSPOHL KLAUS DR

    IPC: C08G18/48 ,  C08G65/26 ,  C08G65/28

    Abstract: The invention relates to a process for the production of rigid foams containing urethane or urethane and isocyanurate groups by reacting a) polyoxypropylene- or polyoxyethylene-polyoxypropylene-polyols containing secondary hydroxyl groups, having a functionality of from 3.5 to 4.3, a hydroxyl number of from 350 to 650 and a viscosity of from 500 to 2,500 mPa.s at 23 DEG C, prepared by anionic polymerisation of 1,2-propylene oxide or ethylene oxide and 1,2-propylene oxide onto an initiator molecule mixture containing, based on the total weight, a1) from 40 to 80 % by weight of hexanetetrols, a2) from 1 to 30 % by weight of hexanetriols, a3) from 0 to 35 % by weight of glycerol and a4) from 0 to 15 % by weight of sorbitol or mannitol or mixtures thereof, and b) optionally low-molecular-weight chain extenders and/or crosslinking agents with c) organic, optionally modified polyisocyanates, in the presence of d) blowing agents, e) catalysts and optionally f) assistants and/or additives, and to the polyoxypropylene-polyols and polyoxyethylene- polyoxypropylene-polyols which can be used for this purpose.

    49.
    发明专利
    未知

    公开(公告)号：AT114684T

    公开(公告)日：1994-12-15

    申请号：AT91107075

    申请日：1991-05-02

    Applicant: BASF AG

    Inventor： HENN ROLF DR ,  HINZ WERNER DR ,  SCHUSTER LUDWIG DR ,  VORSPOHL KLAUS DR

    IPC: C08G18/48 ,  C08G65/26 ,  C08G65/28 ,  C08G101/00

    Abstract: The invention relates to a process for the production of rigid foams containing urethane or urethane and isocyanurate groups by reacting a) polyoxypropylene- or polyoxyethylene-polyoxypropylene-polyols containing secondary hydroxyl groups, having a functionality of from 3.5 to 4.3, a hydroxyl number of from 350 to 650 and a viscosity of from 500 to 2,500 mPa.s at 23 DEG C, prepared by anionic polymerisation of 1,2-propylene oxide or ethylene oxide and 1,2-propylene oxide onto an initiator molecule mixture containing, based on the total weight, a1) from 40 to 80 % by weight of hexanetetrols, a2) from 1 to 30 % by weight of hexanetriols, a3) from 0 to 35 % by weight of glycerol and a4) from 0 to 15 % by weight of sorbitol or mannitol or mixtures thereof, and b) optionally low-molecular-weight chain extenders and/or crosslinking agents with c) organic, optionally modified polyisocyanates, in the presence of d) blowing agents, e) catalysts and optionally f) assistants and/or additives, and to the polyoxypropylene-polyols and polyoxyethylene- polyoxypropylene-polyols which can be used for this purpose.

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