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    3.
    发明专利
    未知

    公开(公告)号：AT161859T

    公开(公告)日：1998-01-15

    申请号：AT92117083

    申请日：1992-10-07

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  HINZ WERNER DR ,  KNOBLAUCH GEORG ,  RAMSTEINER FALKO DR ,  KNORR GOTTFRIED DR

    IPC: A61L29/00 ,  A61F2/00 ,  A61L27/34 ,  A61M5/00 ,  B01D63/02 ,  C08G18/02 ,  C08G18/10 ,  C08G18/12 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66 ,  C08G18/76

    Abstract: The invention relates to transparent, autoclavable, non-cytotoxic, essentially compact polyurethane embedding compositions which are prepared by reacting a) modified diphenylmethane diisocyanates with b) compounds with at least two reactive hydrogens, which contain or are composed of b1) at least one polyether-polyol with an average functionality of from 3 to 8, a hydroxyl number of from 200 to 1000 and an alkali metal ion content of from 150 to 1200 ppm or, preferably, a mixture of (b1) and castor oil and/or at least one polyetherpolyol (b2) with a functionality of from 2 to 3, a hydroxyl number of from 90 to 200 and an alkali metal ion content of less than 10 ppm in the presence or absence of c) catalysts and to a process for preparing the polyurethane embedding compositions and to the use thereof for articles used in medicine.

    4.
    发明专利
    未知

    公开(公告)号：AT161559T

    公开(公告)日：1998-01-15

    申请号：AT94106805

    申请日：1994-05-02

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  HINZ WERNER DR ,  JUNG LUDWIG

    IPC: C08G18/08 ,  C08G18/00 ,  C08G18/22 ,  C08G18/30 ,  C08G18/32 ,  C08G18/48 ,  C08G18/50 ,  C08G18/65 ,  C08G18/66 ,  C08G101/00 ,  C08J9/00

    Abstract: The invention relates to a process for the production of polyurethane foams, preferably semirigid polyurethane foams, having an improved foam structure by reacting a) organic and/or modified organic polyisocyanates with b) polyhydroxyl compounds having at least 2 reactive hydrogen atoms and c) crosslinking agents comprising at least one polyoxyalkylene polyol having a mean functionality of 3 to 8 and a hydroxyl number of from 200 to 1300 ppm, and having an alkali ion content of from 150 to 1200 ppm, in the presence of d) blowing agents, e) optionally catalysts, f) inorganic and/or organic acids as additive and g) optionally auxiliaries.

    6.
    发明专利
    未知

    公开(公告)号：ES2097944T3

    公开(公告)日：1997-04-16

    申请号：ES93108738

    申请日：1993-06-01

    Applicant: BASF AG

    Inventor： HINZ WERNER DR ,  MALETZKO CHRISTIAN DR ,  CHAKRABARTI SARBANANDA ,  BECKER JOHANNES DR ,  BRUCHMANN BERND DR

    IPC: C08G18/60 ,  C08G18/10 ,  C08G18/50 ,  C08G18/65 ,  C08G18/66 ,  C08G18/80

    Abstract: The invention relates to a process for the preparation of elastic, cellular or compact elastomers containing bonded urethane groups or urethane and urea groups, preferably elastomer mouldings, in particular airbag covers, by reacting a) at least one organic and/or modified organic polyisocyanate with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, c) at least one N-perethoxylated polyoxyalkylene-polyamine and d) low-molecular-weight chain extenders and/or crosslinking agents, in the presence or absence of e) catalysts, f) auxiliaries and g) blowing agents, in a mould.o

    Isocyanate prepolymer mixt. based on poly:ol mixt. contg. renewable lignin
    7.
    发明专利
    Isocyanate prepolymer mixt. based on poly:ol mixt. contg. renewable lignin 未知

    公开(公告)号：DE19545550A1

    公开(公告)日：1996-06-13

    申请号：DE19545550

    申请日：1995-12-06

    Applicant: BASF AG

    Inventor： HINZ WERNER DR

    IPC: C08G18/12 ,  C08G18/40 ,  C08G18/64 ,  C08G18/76 ,  C08G18/10 ,  C08G18/48 ,  C08G18/65 ,  C08G18/70 ,  C08J9/00 ,  C08L75/04

    Abstract: NCO-prepolymer mixt. (I) contg. urethane gps.and 2.5-30 wt.% reactive NCO is claimed. (I) is obtd. by reacting (a) 4,4'-, 2,4'- and 2,2'-di-phenylmethane diisocyanate, an isomer mixt. of 4,4'- and 2,4'-and opt. 2,2'-di-phenylmethane diisocyanate or a mixt. of diphenylmethane diisocyanates and poly-phenyl-polyphenylene polyisocyanates with (b) a suspension contg. (b-1) polyoxypropylene glycol(s) (IIA) and/or polyoxypropylene-polyoxyethylene glycol(s) (IIB) with a mol.wt. of 400-6000, pref. 1000-3000 and (b-ii) lignin. Also claimed are methods for producing (1) (I) by reacting the specified organic polyisocyanates and suspension; and (2) compact or cellular polyurethanes, pref. PU foam.

    Isocyanate prepolymer mixt. for high strength polyurethane foam
    8.
    发明专利
    Isocyanate prepolymer mixt. for high strength polyurethane foam 未知

    公开(公告)号：DE19545527A1

    公开(公告)日：1996-06-13

    申请号：DE19545527

    申请日：1995-12-06

    Applicant: BASF AG

    Inventor： HINZ WERNER DR

    IPC: C08G18/10 ,  C08G18/40 ,  C08G18/64 ,  C08G18/76 ,  C08J9/00 ,  C08G18/48 ,  C08G18/70 ,  C08G18/65 ,  C08L75/04

    Abstract: An NCO-prepolymer mixt. (I) contg. urethane gps. and 2.5-30 wt.% reactive NCO gps. is obtd. by reacting: (a) 4,4'-, 2,4'- and 2,2'-diphenylmethane diisocyanate, an isomer mixt. of 4,4'- and 2,4'- and opt. 2,2'-diphenylmethane diisocyanate or a mixt. of diphenylmethane diisocyanates and polyphenyl-polyphenylene polyisocyanates; and(b) a soln. contg.: (b-i) polyoxyethylene glycol(s) (PEG) with a mol.wt. of 400-4000; and (b-ii) lignin. Also claimed are:(A) a method for producing (I) by reacting the specified organic polyisocyanates and soln.; and (B) a method for producing compact or cellular polyurethanes, pref. polyurethane foam.

    9.
    发明专利
    未知

    公开(公告)号：DE4412677A1

    公开(公告)日：1995-10-19

    申请号：DE4412677

    申请日：1994-04-13

    Applicant: BASF AG

    Inventor： BRUCHMANN BERND DR ,  ZSCHIESCHE RUTH DR ,  LUTTER HEINZ-DIETER DR ,  SPANG CLAUDIA DR ,  HINZ WERNER DR

    IPC: C08J9/02 ,  C08G18/18 ,  C08G18/20 ,  C08J9/12 ,  C08G18/40 ,  C08G18/65 ,  C08G18/10 ,  C08G18/79 ,  C08L75/04 ,  B29C67/20

    Abstract: Prodn. of polyurethane foam involves reacting (a) organic and/or modified organic polyisocyanate(s) with (b) polyol(s) of relatively high mol. wt., which contain at least 2 reactive H atoms and (c) opt. low mol. chain extender and/or crosslinker in the presence of (d) blowing agent, (e) catalyst and (f) opt. additives. The novelty is that the catalyst comprises aminoalkyl- or aminophenyl-imidazole cpds. of formula (IA) and/or (IB). In (IA) and (IB), R ,R , R = 1-10C alkyl, 1-4C alkoxy, N-mono- and N,N-di-(1-4C)-alkylamino, N-mono- and N,N-di-(1-4C)-alkylamino-(2-4C)-alkylene, Ph, halogen or H; R = as R except halogen and alkoxy; X = 2-6C alkylene or phenylene; Y = H, 2-4C hydroxyalkyl or hydroxypoly-(2-20C)-oxyalkylene; Z = 1-4C alkyl, Ph or as Y. Also claimed is the use of (IA) and/or (IB), esp. 1-(3-aminopropyl)-imidazole (IC), 1-(3-aminopropyl)-2-methylimidazole (ID) or 1-(3-aminopropyl)-2-ethyl-4-methylimidazole (IE) as catalyst for the prodn. of polyisocyanate polyadducts.

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