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    41.
    发明专利
    未知

    公开(公告)号：DE59007339D1

    公开(公告)日：1994-11-03

    申请号：DE59007339

    申请日：1990-12-13

    Applicant: BASF AG

    Inventor： LUTTER HEINZ-DIETER DR ,  LEPPKES REINHARD DR ,  HORN PETER DR ,  DECKER WALTER ,  HAASE VOLKER ,  HINZ WERNER DR

    IPC: C08G18/48 ,  C08G18/66

    Abstract: The invention relates to a process for the production of flexible, soft polyurethane foams having viscoelastic, structure borne soundproofing properties in a temperature range of from -20 DEG C to +80 DEG C, by reacting a) a polyoxyalkylene-polyol mixture containing ai) a block polyoxypropylene-polyoxyethylene-polyol mixture having a hydroxyl number of from 14 to 65 and containing from 2 to 9 % by weight, based on the weight of the polyoxypropylene units, of terminally bonded ethylene oxide units, and prepared by anionic polymerisation at elevated temperature of 1,2-propylene oxide onto an initiator molecule mixture having a mean functionality of from 2.3 to 2.8 comprising water and glycerol and/or trimethylolpropane, and polymerisation of ethylene oxide onto the resultant polyoxypropylene adduct, and aii) at least one difunctional and/or trifunctional polyoxypropylene-polyoxyethylene-polyol containing from 60 to 85 % by weight, based on the total weight of polymerised alkylene oxide units, of oxyethylene units, and having a hydroxyl number of from 20 to 80, and b) optionally low-molecular-weight chain extenders with c) organic and/or modified organic polyisocyanates, in the presence of d) catalysts, e) blowing agents, preferably water, and optionally f) assistants and/or additives, and to the polyoxyalkylene-polyol mixtures (a) which can be used for this purpose.

    43.
    发明专利
    未知

    公开(公告)号：AT112297T

    公开(公告)日：1994-10-15

    申请号：AT90124026

    申请日：1990-12-13

    Applicant: BASF AG

    Inventor： LUTTER HEINZ-DIETER DR ,  LEPPKES REINHARD DR ,  HORN PETER DR ,  DECKER WALTER ,  HAASE VOLKER ,  HINZ WERNER DR

    IPC: C08G18/48 ,  C08G18/66 ,  C08J9/08 ,  C08G101/00

    Abstract: The invention relates to a process for the production of flexible, soft polyurethane foams having viscoelastic, structure borne soundproofing properties in a temperature range of from -20 DEG C to +80 DEG C, by reacting a) a polyoxyalkylene-polyol mixture containing ai) a block polyoxypropylene-polyoxyethylene-polyol mixture having a hydroxyl number of from 14 to 65 and containing from 2 to 9 % by weight, based on the weight of the polyoxypropylene units, of terminally bonded ethylene oxide units, and prepared by anionic polymerisation at elevated temperature of 1,2-propylene oxide onto an initiator molecule mixture having a mean functionality of from 2.3 to 2.8 comprising water and glycerol and/or trimethylolpropane, and polymerisation of ethylene oxide onto the resultant polyoxypropylene adduct, and aii) at least one difunctional and/or trifunctional polyoxypropylene-polyoxyethylene-polyol containing from 60 to 85 % by weight, based on the total weight of polymerised alkylene oxide units, of oxyethylene units, and having a hydroxyl number of from 20 to 80, and b) optionally low-molecular-weight chain extenders with c) organic and/or modified organic polyisocyanates, in the presence of d) catalysts, e) blowing agents, preferably water, and optionally f) assistants and/or additives, and to the polyoxyalkylene-polyol mixtures (a) which can be used for this purpose.

    44.
    发明专利
    未知

    公开(公告)号：DE59005331D1

    公开(公告)日：1994-05-19

    申请号：DE59005331

    申请日：1990-08-10

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  HINZ WERNER DR ,  HECKMANN WALTER DR ,  RAMSTEINER FALKO DR ,  GEROLD FRIEDRICH

    IPC: A61L31/00 ,  A61L2/07 ,  A61L27/18 ,  A61L27/34 ,  A61L27/44 ,  B01D63/02 ,  B01D65/00 ,  C08G18/10 ,  C08G18/12 ,  C08G18/48 ,  C08G18/66 ,  C08G18/72 ,  C08G18/76

    Abstract: The present invention relates to transparent essentially non-cellular polyurethane casting compositions that are sterilizable with superheated steam which are prepared by reacting: (A) modified diphenylmethane diisocyanates (A) liquid at 23 DEG C. obtained by reacting (A1) 4,4'-diphenylmethane diisocyanate or (A2) 2,4'-diphenylmethane diisocyanate or (A3) a diphenylmethane diisocyanate mixture with (A4) at least one polyoxypropylene polyol and/or (A5) at least one polyoxypropylene polyoxyethylene polyol containing 1 to 80 weight percent of ethylene oxide units whereby (A4) and (A5) have a functionality of 4 to 8 and a hydroxyl number of 150 to 500 and are obtained while using sucrose and/or preferably sorbitol as initiator molecules (A6) a mixture of (A4) and/or (A5) and at least one polyoxypropylene polyol and/or polyoxyethylene polyol initiated with glycerine and/or trimethylolpropane in a NCO:OH group ratio of 2.5:1 to 15:1 with (B) at least one compound having at least reactive hydrogen atoms which preferably contains no primary, secondary or tertiary amino groups in bonded form in the presence of or absence of (C) catalysts. The present invention also relates to a process for the preparation of polyurethane casting compositions and their use for medical-technical articles.

    45.
    发明专利
    未知

    公开(公告)号：DE58906988D1

    公开(公告)日：1994-03-24

    申请号：DE58906988

    申请日：1989-11-06

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  REHMER GERD DR ,  LUTTER HEINZ-DIETER DR ,  RAMLOW GERHARD DR

    IPC: C08F216/14 ,  C08F218/10 ,  C08F220/28 ,  C08F220/58 ,  C08F222/20 ,  C08F226/00 ,  C08F226/06 ,  C08F290/06 ,  C08F299/02 ,  C08G18/40 ,  C08G18/62 ,  C08L75/04 ,  C09K23/52

    Abstract: The novel copolymers having K values of from 5 to 80 are prepared by free-radical polymerisation of A) 20 to 80% by weight, based on the total weight of (A) and (B), of at least one olefinically unsaturated polyoxyalkylene alcohol or polyester alcohol adduct, (B) 80 to 20% by weight, based on the total weight of (A) and (B), of at least one vinyl monomer from the group comprising N-vinylformamide, -2-pyrrolidone, -2-piperidone, -2-caprolactam, -imidazole, -2-ethyleneurea and -2-propyleneurea, C) 0 to 40 parts by weight of glycidyl acrylate and/or glycidyl methacrylate, D) 0 to 10 parts by weight of at least one alpha , beta -monoolefinically unsaturated acid and E) 0 to 30 parts by weight of at least one olefinically unsaturated carboxamide and/or carboxylate and/or styrene, the parts by weight of (C), (D) and (E) in each case being based on 100 parts by weight of the monomers (A) and (B). The copolymers are used as assistants and/or additives, for example as dispersion and/or emulsification assistants, or as additives for improving the mechanical properties, in formulations for the preparation of polyisocyanate polyaddition products.

    48.
    发明专利
    未知

    公开(公告)号：DE3942330A1

    公开(公告)日：1991-06-27

    申请号：DE3942330

    申请日：1989-12-21

    Applicant: BASF AG

    Inventor： LUTTER HEINZ-DIETER DR ,  LEPPKES REINHARD DR ,  HORN PETER DR ,  DECKER WALTER ,  HAASE VOLKER ,  HINZ WERNER DR

    IPC: C08G18/48 ,  C08G18/66

    Abstract: The invention relates to a process for the production of flexible, soft polyurethane foams having viscoelastic, structure borne soundproofing properties in a temperature range of from -20 DEG C to +80 DEG C, by reacting a) a polyoxyalkylene-polyol mixture containing ai) a block polyoxypropylene-polyoxyethylene-polyol mixture having a hydroxyl number of from 14 to 65 and containing from 2 to 9 % by weight, based on the weight of the polyoxypropylene units, of terminally bonded ethylene oxide units, and prepared by anionic polymerisation at elevated temperature of 1,2-propylene oxide onto an initiator molecule mixture having a mean functionality of from 2.3 to 2.8 comprising water and glycerol and/or trimethylolpropane, and polymerisation of ethylene oxide onto the resultant polyoxypropylene adduct, and aii) at least one difunctional and/or trifunctional polyoxypropylene-polyoxyethylene-polyol containing from 60 to 85 % by weight, based on the total weight of polymerised alkylene oxide units, of oxyethylene units, and having a hydroxyl number of from 20 to 80, and b) optionally low-molecular-weight chain extenders with c) organic and/or modified organic polyisocyanates, in the presence of d) catalysts, e) blowing agents, preferably water, and optionally f) assistants and/or additives, and to the polyoxyalkylene-polyol mixtures (a) which can be used for this purpose.

    49.
    发明专利
    未知

    公开(公告)号：DE3767194D1

    公开(公告)日：1991-02-14

    申请号：DE3767194

    申请日：1987-03-04

    Applicant: BASF AG

    Inventor： HORN PETER DR ,  CHAKRABARTI SARBANANDA ,  BOEHME RALF ,  SCHMIDT HANS ULRICH ,  STREU JOACHIM DR

    IPC: B29C33/60 ,  C08G18/28 ,  C08G18/34 ,  C08G18/65 ,  C08J9/00 ,  C08K5/09 ,  C08K5/098 ,  C08K5/17 ,  C08K5/20 ,  C08K13/00

    Abstract: A process for the production of mouldings having a cellular core and a compacted peripheral zone and improved demoulding properties by the polyisocyanate polyaddition process, by reacting a) organic polyisocyanates b) relatively high-molecular-weight compounds containing at least 2 reactive hydrogen atoms, and, if desired, c) low-molecular-weight polyhydric alcohols, polyoxyalkylene-polyols and/or secondary aromatic diamines in the presence of d) an internal mould release agent, comprising A) from 0.1 to 12% by weight, based on the total weight of components (b) and (c), of a mixture of i) from 5 to 80 parts by weight of at least one organic amine, and ii) from 20 to 95 parts by weight of at least one metal salt of stearic acid, and B) from 0.01 to 32% by weight, based on the total weight of components (b) and (c), of at least one organic mono- and/or dicarboxylic acid or anhydrides thereof, e) catalysts, f) blowing agents, and, if desired, g) assistants and/or additives, in a closed mould with compaction, expediently using the low-pressure or preferably reaction injection moulding technique.

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