54.
    发明专利
    未知

    公开(公告)号:DK387386D0

    公开(公告)日:1986-08-14

    申请号:DK387386

    申请日:1986-08-14

    Applicant: HOECHST AG

    Abstract: 1. A process for the preparation of 2-oxo-1,3-dioxolanes by reaction of epoxides with carbon dioxide in the presence of a catalyst and, if necessary, an inert solvent, wherein the reaction is effected at temperatures from 40 to 180 degrees C and at normal pressure or slightly increased pressure in the presence of at least one catalyst from the group comprising triphenylphosphane, tritolylphosphane, diazabicyclo[2.2.2]octane, 4-dimethylaminopyridine, 4-(1-pyrrolidinyl)pyridine, amidines, imidazole and the alkyl, aryl, or aralkyl substitution products thereof.

    59.
    发明专利
    未知

    公开(公告)号:DE19631370A1

    公开(公告)日:1998-02-05

    申请号:DE19631370

    申请日:1996-08-02

    Applicant: HOECHST AG

    Inventor: MARTEN MANFRED

    Abstract: Hardeners (I) for epoxy resins, containing reaction products of (A) compounds with more than one 1,2-epoxide groups on average, comprising reaction products of (A1) polyfunctional epoxides with more than two 1,2-epoxide groups and (A2) mono- hydroxy-aromatics, and (B) amines. Also claimed are (I) epoxy resin hardeners (I') containing the above components together with (A') epoxide compounds other than (A) with at least two epoxide groups, and (II) hardenable mixtures containing (I) and an epoxy resin (C).

    Aliphatic expoxide-amine adducts with substantial side-chain branching, process for their preparation, and their use.

    公开(公告)号:ZA963464B

    公开(公告)日:1997-11-03

    申请号:ZA963464

    申请日:1996-05-02

    Applicant: HOECHST AG

    Abstract: Epoxide-amine adducts (I) are claimed, contg. at least 20 wt% aliphatic epoxide and/or amine units with at least one tert. or quat. carbon atom. Also claimed are: (i) binders for coatings, contg. adduct(s) (I); (ii) mixts. of 0.1-99.9 wt% OH gp.-contg. copolymers and 99.9-0.1 wt% (I); (iii) binders for coatings, contg. mixts. (ii); (iv) coating materials contg. these binders, together with hardeners such as amino resins, capped or uncapped polyisocyanates and cpds. with acid and/or anhydride gps.. Pref. (I) are obtd.: (A) by reacting (a) 7-33C (cyclo)aliphatic mono-epoxides (a1), at least 20 wt% of which comprises monoepoxides with a tert. or quat. C atom with (b) 2-30C amines with at least 2 prim. or sec. amino gps. not attached directly to an aromatic ring; or (B) by reacting (a) 8-50C (cyclo)aliphatic diepoxides (a2) with (b) 4-30C prim. or sec. mono-amines with amino gps. not directly attached to aromatic rings, of which at least 20 wt% comprises mono-amines with at least one tert. or quat. C atom; or (C) by reacting (a1) with (b), the corresp. proportions of mono-amine and mono-epoxide with tert. or quat. C atoms being a% and b% respectively, where a + b = 20 and both a and b are greater than zero. The functionality of (I) is reduced by partial or complete reaction of the functional OH and amino gps., pref. by blocking with temporary protecting gps., esp. oxazolidine gps..

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