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    11.
    发明专利
    未知

    公开(公告)号：DE4104199A1

    公开(公告)日：1992-08-13

    申请号：DE4104199

    申请日：1991-02-12

    Applicant: BASF AG

    Inventor： ABEL ULRICH DR ,  LEHRICH FRIEDHELM DR ,  STRAEHLE WOLFGANG DR ,  GROLL PETER DR

    IPC: C08G18/00 ,  C08G18/48 ,  C08G18/58 ,  C08G18/66 ,  C08K5/15 ,  C08L75/08

    Abstract: The invention relates to a process for the preparation of polyurethane elastomers by reacting …… a) organic and/or modified organic polyisocyanates with … b) at least one relatively high-molecular-weight polyoxybutylene- polyoxyalkylene glycol from the group consisting of polyoxybutylene- polyoxyethylene glycol, polyoxybutylene-polyoxypropylene glycol and/or polyoxybutylene- polyoxypropylene-polyoxyethylene glycol, … c) at least one chain extender and/or crosslinking agent and … d) at least one glycidyl compound containing units of the structure … … in which …… n is a number from 1 to 6, … X is an alkylene, arylene, -O- or -N- bridging member, and … R and R are identical or different radicals from the group consisting of hydrogen, methyl and ethyl, … in the presence or absence of … e) blowing agents, … f) catalysts, and … g) assistants and/or additives, … and mixtures of polyoxybutylene-polyoxyalkylene glycols (b) and glycidyl compounds (d).

    PROCESS FOR THE PREPARATION OF ELASTIC FLEXIBLE POLYURETHANE FOAMS
    13.
    发明专利
    PROCESS FOR THE PREPARATION OF ELASTIC FLEXIBLE POLYURETHANE FOAMS 未知

    公开(公告)号：DE3272455D1

    公开(公告)日：1986-09-11

    申请号：DE3272455

    申请日：1982-09-09

    Applicant: BASF AG

    Inventor： BUETHE INGOLF DR ,  STRAEHLE WOLFGANG DR ,  MARX MATTHIAS DR ,  PETERS REINHARD DR

    IPC: C08G18/48 ,  C08G18/14

    Abstract: For the preparation of elastic flexible polyurethane foams with improved breaking elongation and very good setting behavior as well as densities from 7 to 120 grams per liter, organic polyisocyanates are reacted in the presence of blowing agents, catalysts and, optionally, auxiliaries and/or additives with polyols based on polyoxyalkylene polyols having terminal oxyethylene blocks of a degree of oxyethlation of 1 to 13 and which have a content of primary hydroxyl groups at the corresponding degree of oxyethylation equal or exceeding the value of curve A in the Figure in which curve A describing the relationship of the content of primary hydroxyl groups with the degree of oxyethylation.

    16.
    发明专利
    未知

    公开(公告)号：DE59105343D1

    公开(公告)日：1995-06-08

    申请号：DE59105343

    申请日：1991-02-06

    Applicant: BASF AG

    Inventor： BOTT KASPAR DR ,  STRAEHLE WOLFGANG DR ,  ABEL ULRICH DR

    IPC: C08G18/32 ,  C08G18/42 ,  C08G18/44 ,  C08G18/48 ,  C08G18/66 ,  C08G63/66 ,  C08G64/00 ,  C08G64/02 ,  C08G69/40

    Abstract: Thermoplastic elastomers selected from the group consisting of thermoplastic polyurethanes, polyether esters and polyether amides and derived from polyether polycarbonate diols as the diol component, where the polyether polycarbonate diols used are products of the reaction of phosgene, dialkyl carbonates containing C1- to C4-alkyl groups, or cyclic carbonates containing C2- to C4-alkylene bridges, or mixtures thereof, with mixtures of …… a1) from 10 to 100 mol% of polyoxytetramethylenediol having a mean molecular weight Mn (number average) of from 150 to 500, and … a2) from 0 to 90 mol% of polyoxyalkylenediols, other than a1), containing C2- to C8-alkylene groups, aliphatic alkanediols having 2 to 14 carbon atoms, alicyclic alkanediols having 3 to 14 carbon atoms or alkylene oxides having 2 to 3 carbon atoms, or mixtures thereof. …

    17.
    发明专利
    未知

    公开(公告)号：DE59103732D1

    公开(公告)日：1995-01-19

    申请号：DE59103732

    申请日：1991-02-09

    Applicant: BASF AG

    Inventor： BOTT KASPAR DR ,  STRAEHLE WOLFGANG DR ,  ABEL ULRICH DR

    IPC: C08G18/48 ,  C08G18/42 ,  C08G18/44 ,  C08G63/64 ,  C08G63/66 ,  C08G64/00 ,  C08G64/02 ,  C08G65/32 ,  C08G69/40 ,  C08G69/44

    Abstract: Polyether polycarbonate diols built up essentially from …… A) from 3 to 63.7 mol% of units derived from a polyoxytetramethylenediol, … B) from 3 to 63.7 mol% of units derived from a polyoxyalkylenediol which is different from A) and contains C2- to C8-alkylene groups, an aliphatic alkanediol having 2 to 14 carbon atoms, an alicyclic alkanediol having 3 to 14 carbon atoms or an alkylene oxide having 2 or 3 carbon atoms, or mixtures thereof, and … C) from 33.3 to 50 mol% of units derived from phosgene, a dialkyl carbonate containing C1- to C4-alkyl groups, or a cyclic carbonate containing C2- to C4-alkylene bridges, or mixtures thereof. …

    19.
    发明专利
    未知

    公开(公告)号：DE3614038A1

    公开(公告)日：1987-11-05

    申请号：DE3614038

    申请日：1986-04-25

    Applicant: BASF AG

    Inventor： STREU JOACHIM DR ,  STRAEHLE WOLFGANG DR

    IPC: C08G18/42 ,  C08G63/16 ,  C08G63/20 ,  C08G18/66

    Abstract: This invention relates to polyester polyols which are liquid at 25 DEG C. and contain units having the structure -OCH2-CH(CH3)-CH2CH2O- which are bound together and have an average functionality of from about 2 to 3, a hydroxyl number of from about 25 to 300, an acid number of less than about 2, and a viscosity of from about 200 to 105 mPas at 25 DEG C. The polyols are prepared through polycondensation in the molten state, in the presence of or absence of esterification catalysts, of an aliphatic di- and/or polycarboxylic acid and/or di- and/or polycarboxylic acid ahydride and 2-methyl-1,4-butanediol or mixtures comprised of 2-methyl-1,4-butanediol and at least one linear or branched, aliphatic di- through tetravalent alcohol, which optionally contains ether bridges and has a 2-methyl-1,4-butanediol content of at least 20 weight percent based on the weight of the alcohol mixture. The polyester polyols are suited for the preparation of non-cellular or cellular polyurethane plastics or polyurethane-polyurea plastics and preferably polyurethane elastomers, using the polyisocyanates addition polymerization process.

    20.
    发明专利
    未知

    公开(公告)号：DE3526413A1

    公开(公告)日：1987-02-05

    申请号：DE3526413

    申请日：1985-07-24

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG DR ,  MARX MATTHIAS DR ,  SCHUETT UWE

    IPC: C08G18/38 ,  C08G18/40 ,  C08G18/64 ,  C08G18/28 ,  C08G18/14 ,  C08G18/65 ,  C08L75/04 ,  C08J9/02 ,  C08J9/04 ,  C08G18/10

    Abstract: The invention relates to a process for preparing high temperature-resistant dense or cellular polyurethane elastomers by reacting the following, preferably using low-pressure processing techniques: (a) organic polyisocyanates, preferably in the form of isocyanate group-containing prepolymers and/or modified urethane group-containing organic polyisocyanates, with (b) relatively high molecular weight compounds having at least 2 reactive hydrogen atoms, (c) urea derivatives and, optionally, (d) chain extenders and/or cross-linking agents in the presence of (e) catalysts and, optionally, (f) blowing agents (g) auxiliaries and/or additives wherein amino and/or hydroxyl group-substituted ureas and/or polyureas having molecular weights from 200 to 4000 are also used as the urea derivatives. Said ureas and/or polyureas are prepared by reacting organic diisocyanates with primary aliphatic and/or cycloaliphatic diamines and/or alkanolamines in molar ratios of from 1:1.1 to 1:2, preferably in the presence of polyester or polyether polyols as solvents or diluting agents.

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