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    POLYUREA SILICATE RESIN FOR WELLBORE APPLICATION
    3.
    发明专利
    POLYUREA SILICATE RESIN FOR WELLBORE APPLICATION 未知

    公开(公告)号：CA2893099A1

    公开(公告)日：2014-06-26

    申请号：CA2893099

    申请日：2013-12-20

    Applicant: BASF SE

    Inventor： MC DONNELL SHANE ,  LAFUENTE CERDA OSCAR ,  WALTHER BURKHARD ,  KIERAT RADOSLAW

    IPC: C09K8/508 ,  C08G18/38

    Abstract: Described herein is a novel method of strengthening a wellbore wherein the method uses a polyurea silicate composition. In the method of strengthening an oil well, a gas well or a water well, a mixture comprising at least one isocyanate component having at least two isocyanate groups per molecule; at least one alkali metal silicate; and water is pumped through the oil well, the gas well or the water well into the annulus of the well; subsequently, the mixture is allowed to form a polyurea silicate composition; before the polyurea silicate composition sets to thereby give a polyurea matrix comprising domains of silicate.

    Preparation of urethane (meth)acrylates, useful for coating e.g. wooden substrates and cellulose fibers, comprises reaction of components, e.g. isocyanate and polyalkyleneoxide polyether in presence of at least one reactive solvent
    9.
    发明专利
    Preparation of urethane (meth)acrylates, useful for coating e.g. wooden substrates and cellulose fibers, comprises reaction of components, e.g. isocyanate and polyalkyleneoxide polyether in presence of at least one reactive solvent 未知

    公开(公告)号：DE102008002008A1

    公开(公告)日：2008-12-11

    申请号：DE102008002008

    申请日：2008-05-27

    Applicant: BASF SE

    Inventor： LAFUENTE CERDA OSCAR ,  MENZEL KLAUS ,  GRUBER NICK ,  THUERY PETER

    IPC: C08G18/66 ,  C08G18/67 ,  C08G18/76 ,  C09D175/08 ,  C09D175/16

    Abstract: Preparation of urethane (meth)acrylates (I) comprises reaction of the components (A) e.g. at least an isocyanate (a), polyalkyleneoxide polyether (b), hydroxyfunctions (meth)acrylate (c), optionally a compound (d) with at least a group reactive opposite isocyanate and an acid function, optionally a base compound (e) (if (d) is present), optionally at least a mono alcohol (f), and optionally a compound (g) with a primary and/or secondary amino group, in presence of a reactive solvent (B); and adding isocyanate to the mixture preferably containing (b), (c) and optionally (d). Preparation of urethane (meth)acrylates (I) comprises reaction of the components (A) in the presence of at least one reactive solvent (B), where (A) is at least an isocyanate (a) with at least 2 isocyanate functions, at least a polyalkyleneoxide polyether (b) with at least 2 hydroxyfunctions, at least a hydroxyfunctions (meth)acrylate (c) with a hydroxyfunction and at least (meth)acrylate function, optionally at least one compound (d) with at least an isocyanate reactive group and at least an acid function, optionally at least a base compound (e) (if (d) is present) for the neutralization or partial neutralization of the groups of acids of the component (d), optionally at least a mono alcohol (f), which exhibits exactly a hydroxy function, and optionally at least a compound (g) with at least a primary and/or secondary amino group; and adding isocyanate to the mixture preferably containing (b), (c) and optionally (d).

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