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    PROCESS FOR THE PREPARATION OF HIGH-TEMPERATURE- RESISTANT DENSE OR CELLULAR POLYURETHANE ELASTOMERS
    3.
    发明专利
    PROCESS FOR THE PREPARATION OF HIGH-TEMPERATURE- RESISTANT DENSE OR CELLULAR POLYURETHANE ELASTOMERS 未知

    公开(公告)号：CA1266945A

    公开(公告)日：1990-03-20

    申请号：CA514041

    申请日：1986-07-17

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG ,  MARX MATTHIAS ,  SCHUETT UWE

    IPC: C08G18/38 ,  C08G18/40 ,  C08G18/64

    Abstract: PROCESS FOR THE PREPARATION OF HIGH-TEMPERATURE-RESISTANT DENSE OR CELLULAR POLYURETHANE ELASTOMERS The invention relates to a process for preparing high temperature-resistant dense or cellular polyurethane elastomers by reacting the following, preferably using lowpressure 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 dilsocyanates 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.

    PROCESS FOR THE PREPARATION OF POLYESTER- OR POLYETHER-POLYESTER POLYOL
    4.
    发明专利
    PROCESS FOR THE PREPARATION OF POLYESTER- OR POLYETHER-POLYESTER POLYOL 未知

    公开(公告)号：CA1255325A

    公开(公告)日：1989-06-06

    申请号：CA452231

    申请日：1984-04-17

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG ,  MARX MATTHIAS

    IPC: C07C69/80 ,  C08G63/66 ,  C08G63/87 ,  C08G65/26 ,  C08G65/32 ,  C07C69/75

    Abstract: PROCESS FOR THE PREPARTION OF POLYESTER- OR POLYETHER-POLYESTER POLYOL In order to prepare polyester or polyetherpolyester polyols, polyols, preferably di- to hexafunctional polyether polyols having hydroxyl numbers from 15 to 250 are esterified with at least one carboxylic acid anhydride, preferably phthalic acid anhydride, in the presence of Nmethylimidazole, triethylenediamine, and/or triphenylphosphine as catalysts to form a carboxylic acid half-ester, and said half-ester is then oxyalkylated with at least one alkylene oxide, preferably ethylene oxide, in the presence of N-methylimidazole, triethylenediamine, triphenylphosphine, thiodialkylene glycol, employing a mixture of at least two of the compounds cited as catalysts.

    POLYETHERPOLYCARBONATEDIOLS
    6.
    发明专利
    POLYETHERPOLYCARBONATEDIOLS 未知

    公开(公告)号：CA2036411C

    公开(公告)日：1998-05-12

    申请号：CA2036411

    申请日：1991-02-15

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG ,  BOTT KASPAR ,  ABEL ULRICH

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

    Abstract: Polyetherpolycarbonatediols are disclosed, which comprise (A) from 3 to 63.7 mol % of units derived from a polyoxytetramethylenediol; (B) from 63.7 to 3 mol % of units derived from a polyoxy-C2-C8-alkylenediol other than (A), an aliphatic alkanediol of from 2 to 14 carbon atoms, an alicyclic alkanediol of from 3 to 14 carbon atoms or an alkylene oxide of 2 or 3 carbon atoms, or a mixture thereof; and (C) from 33.3 to 50 mol % of units derived from phosgene, a dialkyl carbonate having C1-C4-alkyl groups or a cyclic carbonate having C2-C4-alkylene bridges, or a mixture thereof. These compounds are useful for producing thermoplastic polyurethanes, polyetheresters, polyetheramides, cellular polyurethane elastomers, casting elastomers and fibers.

    7.
    发明专利
    未知

    公开(公告)号：MX168491B

    公开(公告)日：1993-05-27

    申请号：MX320986

    申请日：1986-07-21

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG ,  MARX MATTHIAS ,  SCHETT UWE

    IPC: C08G18/38 ,  C08G18/40 ,  C08G18/64 ,  C08G18/65 ,  C08L75/04

    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.

    PROCESS FOR THE PREPARATION OF POLYESTER POLYOLS, BASED ON 2-METHYL-1,4-BUTANEDIOL, WHICH ARE LIQUID AT ROOM TEMPERATURE, AND THEIR USE FOR THE PREPARATION OF PLASTIC MATERIALS
    8.
    发明专利
    PROCESS FOR THE PREPARATION OF POLYESTER POLYOLS, BASED ON 2-METHYL-1,4-BUTANEDIOL, WHICH ARE LIQUID AT ROOM TEMPERATURE, AND THEIR USE FOR THE PREPARATION OF PLASTIC MATERIALS 未知

    公开(公告)号：CA1274041A

    公开(公告)日：1990-09-11

    申请号：CA535531

    申请日：1987-04-24

    Applicant: BASF AG

    Inventor： STREU JOACHIM ,  STRAEHLE WOLFGANG

    IPC: C08G18/42 ,  C08G63/16

    Abstract: PROCESS FOR THE PREPARATION OF POLYESTER POLYOLS 9 BASED ON 2-METHYL-1,4-BUTANEDIOL, WHICH ARE LIQUID AT ROOM TEMPERATURE, AND THEIR USE FOR THE PREPARATION OF PLASTIC MATERIALS This invention relates to polyester polyols which are liquid at 25.degree.C and contain units having the structure -OCH2- CH(CH3)-CH2CH20- 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.degree.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 anhydride and 2-methyl-1,4-butanediol or mixtures comprised of 2 methyl-1,4-butanediol and at least one linear or branched, alipahtic 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 noncellular or cellular polyurethane plastics or polyurethane-polyurea plastics and preferably polyurethane elastomers, using the polyisocyanate addition polymerization process.

    PROCESS FOR THE PREPARATION OF CELLULAR AND NON- CELLULAR POLYURETHANES
    9.
    发明专利
    PROCESS FOR THE PREPARATION OF CELLULAR AND NON- CELLULAR POLYURETHANES 未知

    公开(公告)号：CA1219987A

    公开(公告)日：1987-03-31

    申请号：CA452232

    申请日：1984-04-17

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG ,  BUETHE INGOLF ,  MARX MATTHIAS

    IPC: C07C69/80 ,  C08G18/42 ,  C08G18/48 ,  C08G65/26 ,  C08G65/32 ,  C08G18/14 ,  C08G71/04

    Abstract: PROCESS FOR THE PREPARATION OF CELLULAR OR NON-CELLULAR POLYURETHANES The invention relates to a process for the preparation of cellular or non-cellular polyurethanes through the reaction of organic polyisocyanates with a polyether-polyester polyol component containing di- to tetrafunctional polyether-polyester polyols having hydroxyl numbers of from 10 to 200, which are themselves prepared by esterifying conventional di- to tetrafunctional polyether polyols with carboxylic acid anhydrides, preferably aromatic carboxylic acid anhydrides, in the presence of selected catalysts to form carboxylic acid half esters, and oxyalkylating the resulting carboxylic acid half esters with alkylene oxides in the presence of N-methylimidazole, triethylene diamine, triphenylphosphine or mixtures thereof with thiodlalkylene glycol as catalysts.

    PROCESS FOR PURIFICATION OF CRUDE POLYETHER POLYOLS
    10.
    发明专利
    PROCESS FOR PURIFICATION OF CRUDE POLYETHER POLYOLS 未知

    公开(公告)号：CA1197264A

    公开(公告)日：1985-11-26

    申请号：CA433423

    申请日：1983-07-28

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG ,  DENNI RAYMOND ,  MARX MATTHIAS

    IPC: C08G65/30 ,  C07C43/13

    Abstract: PROCESS FOR PURIFICATION OF CRUDE POLYETHER POLYOLS A process for purifying crude polyether polyols which are prepared by anionic polymerization of alkylene oxides in the presence of basic catalysts. The polyols are mixed with water and ortho-phosphoric acid in certain quantity ratios, an adsorption agent is incorporated in the reaction mixture, the mixture is filtered and the water is removed from the polyether polyol by distillation.

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