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38 records (took 0.053 seconds)

    31.
    发明专利
    未知

    公开(公告)号：ES2100967T3

    公开(公告)日：1997-07-01

    申请号：ES92100907

    申请日：1992-01-21

    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).

    33.
    发明专利
    未知

    公开(公告)号：DE4004882A1

    公开(公告)日：1991-08-22

    申请号：DE4004882

    申请日：1990-02-16

    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. …

    PROCESS FOR THE PRODUCTION OF POLYESTER POLYOLS OR POLYETHER-POLYESTER POLYOLS
    34.
    发明专利
    PROCESS FOR THE PRODUCTION OF POLYESTER POLYOLS OR POLYETHER-POLYESTER POLYOLS 未知

    公开(公告)号：DE3477571D1

    公开(公告)日：1989-05-11

    申请号：DE3477571

    申请日：1984-04-25

    Applicant: BASF AG

    Inventor： STRAEHLE WOLFGANG DR ,  MARX MATTHIAS DR

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

    Abstract: 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 N-methylimidazole, 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.

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