1.
    发明专利
    未知

    公开(公告)号:BR9600978A

    公开(公告)日:1997-12-30

    申请号:BR9600978

    申请日:1996-03-11

    Applicant: HOECHST AG

    Abstract: Anionic polymer mixts. (I) with reduced prodn. of foam in water, contg. (a) an opt. neutralised or partly neutralised acid gp.-contg. polymer (A), obtd. by polymerisation of COOH gp.-contg. unsatd. cpds. with other ethylenically unsatd. cpds. in the presence of volatile basic neutralising agents (II), and opt. (b) a water-insol. polymer (B) in the form of latex particles, obtd. by emulsion polymerisation of ethylenically unsatd. cpds. in the presence of polymer (A). Also claimed is the prodn. of (I) by (a) producing polymer (A) as above and opt. producing polymer (B) in the presence of neutralised or partly neutralised (A). Pref. polymer (A) has an acid no. of 90-400 mg KOH/g and a Tg of 0-180 degrees C. Reagents (II) are basic cpds. which do not form covalent bonds with carboxyl gps. under the reaction conditions.

    2.
    发明专利
    未知

    公开(公告)号:DE58908087D1

    公开(公告)日:1994-09-01

    申请号:DE58908087

    申请日:1989-03-21

    Applicant: HOECHST AG

    Abstract: Curing agents (A) for isocyanate-curable resins (B) which have an amine number of from 20 to 150 mg of KOH/g, a maximum OH number of 20 mg KOH/g and contain, per molecule, at least two capped isocyanate groups which are reactive under the curing conditions, are obtained by reacting A) an amine which contains at least one ss-hydroxyalkyl group per molecule, as an OH number of from 100 to 1200 mg KOH/g and an amine number of from 100 to 1200 mg of KOH/g and optionally also contains NHCO groups, optionally blended with another OH- and/or NH-functional compound, with B) a partially capped polyisocyanate, optionally blended with an at least bifunctional, OH- and/or NH-reactive compound. These curing agents, if necessary after neutralisation, are readily dispersible in aqueous systems and frequently have a stability-increasing action in water-borne paint formulations.

    6.
    发明专利
    未知

    公开(公告)号:CH606055A5

    公开(公告)日:1978-10-13

    申请号:CH933774

    申请日:1974-07-08

    Applicant: HOECHST AG

    Abstract: 2-Hydroxyethane-phosphonic acid diesters, 2-hydroxyethylphoshinic acid esters and the corresponding thiophoshonic acid-O,O-diesters or thiophosphinic acid-O-esters of the formula XOR1 PARALLEL HO-CH-CH2-P ANGLE (I) ¦ R3(O)nR2 wherein R1 is alkyl having from 1 to 18 carbon atoms, R2 has the meaning of R1 or represents cycloalkyl having up to 10 carbon atoms, alkenyl having up to 18 carbon atoms, aryl having up to 14 carbon atoms or aralkyl having up to 15 carbon atoms, R3 means hydrogen, alkyl having up to 18 carbon atoms, alkenyl having up to 18 carbon atoms, cycloalkyl having up to 10 carbon atoms, aryl having up to 14 carbon atoms or aralkyl having up to 15 carbon atoms, the substituents R1-R3 optionally being substituted, X represents oxygen or sulfur and n represents either 0 or 1, are prepared from 2-acyloxyethane-phosphonic acid diesters, 2-acyloxy-ethyl-phoshinic acid esters or the corresponding thiophoshonic acid-O,O-diesters or thiophoshinic acid-O-esters and are important intermediate products for the preparation of plant protecting agents and flame-proofing agents.

    7.
    发明专利
    未知

    公开(公告)号:DE2526689A1

    公开(公告)日:1976-12-30

    申请号:DE2526689

    申请日:1975-06-14

    Applicant: HOECHST AG

    Abstract: Preparation of 2,5-dioxo-1,2-oxa-phospholanes of the formula (I) (I) wherein R1 represents an optionally substituted alkyl having up to 18 carbon atoms, a cycloalkyl radical having up to 8 carbon atoms, an alkylene radical having up to 8 carbon atoms, an aryl radical having up to 14 carbon atoms which may be substituted by lower alkyl groups, lower alkoxy groups, halogen or by amino groups alkylated or dialkylated by lower alkyl groups, or an aralkyl radical having up to 15 carbon atoms which may be substituted in an analogous manner as the aryl radical, R2 represents a lower alkyl radical or hydrogen and R3 represents an alkyl radical having up to 6 carbon atoms, a phenyl radical which may be substituted by halogen or by lower alkyl groups, a benzyl radical or hydrogen, by reacting 2-halogenoformylethylphosphonic acid halides of the formula (II) (II) wherein R1, R2 and R3 are defined as in formula (I) and X represents chlorine or bromine, with approximately an equimolar quantity of water or one phosphinic-carboxylic acid of the formula (II), wherein both radicals X represent OH-groups.

    10.
    发明专利
    未知

    公开(公告)号:ES2058442T3

    公开(公告)日:1994-11-01

    申请号:ES89120270

    申请日:1989-11-02

    Applicant: HOECHST AG

    Abstract: A continuous process for the preparation of perfluorinated carbonyl fluorides from hexafluoropropene oxide (HFPO), in which HFPO is continuously oligomerized in a catalyst solution in devices which allow separation of the heavy product phase from the catalyst phase during the reaction, is described. Different oligomer distributions can be achieved by choice of the catalyst and different operating temperatures. The reaction itself takes place always in the substantial absence of the product which is formed, and achieves a considerable saving in time.

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