2.
    发明专利
    未知

    公开(公告)号:DE2855233A1

    公开(公告)日:1979-06-28

    申请号:DE2855233

    申请日:1978-12-21

    Abstract: This invention is concerned with producing glycols of the formula HOCHRCH2OH from hydrolysis, in a homogeneous liquid phase mixture, of an alkylene carbonate of the formula in which R is either hydrogen or methyl. This is accomplished by using an amount of water in excess of stoichiometry and using potassium carbonate as the preferred catalyst. The reaction is effected under a carbon dioxide pressure of at least 80 psig and the reaction temperature is desirably between about 85 DEG C. and 500 DEG C.

    4.
    发明专利
    未知

    公开(公告)号:BR8404821A

    公开(公告)日:1985-08-13

    申请号:BR8404821

    申请日:1984-09-25

    Abstract: Novel polyols, useful in, for example, reaction injection molding, high resiliency foams and the preparation of polymer/polyols, characterized by the following formula: wherein A and A', which may be the same or different, are conductive atoms - carbon, oxygen or combinations thereof with hydrogen atoms or the like satisfying the valences; B is nitrogen (N) or CR, R being hydrogen, alkyl, aryl or the like; Q is 0, CH2O, C2H4O, C3H6O, or C4H8O; D is an oxyalkylene or X and X', which may be the same or different, are OH, NH2 or H; Z is OH; n and d are integers of 0 to 10 and the sum of n and d does not exceed 10; s is 0 or 1, and m is an integer of at least about 16, with the proviso that when B is N and either n or d is zero, X and X' are other than H, provide processing advantages and are highly compatible with low molecular weight extenders such as ethylene glycol.

    NOVEL POLYOLS
    6.
    发明专利

    公开(公告)号:AU3354784A

    公开(公告)日:1985-04-04

    申请号:AU3354784

    申请日:1984-09-26

    Abstract: Novel polyols, useful in, for example, reaction injection molding, high resiliency foams and the preparation of polymer/polyols, characterized by the following formula: wherein A and A', which may be the same or different, are conductive atoms - carbon, oxygen or combinations thereof with hydrogen atoms or the like satisfying the valences; B is nitrogen (N) or CR, R being hydrogen, alkyl, aryl or the like; Q is 0, CH2O, C2H4O, C3H6O, or C4H8O; D is an oxyalkylene or X and X', which may be the same or different, are OH, NH2 or H; Z is OH; n and d are integers of 0 to 10 and the sum of n and d does not exceed 10; s is 0 or 1, and m is an integer of at least about 16, with the proviso that when B is N and either n or d is zero, X and X' are other than H, provide processing advantages and are highly compatible with low molecular weight extenders such as ethylene glycol.

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