51.
    发明专利
    未知

    公开(公告)号:DE3218889A1

    公开(公告)日:1983-11-24

    申请号:DE3218889

    申请日:1982-05-19

    Applicant: HOECHST AG

    Abstract: A process for the simultaneous desizing and bleaching of textile material made from cellulose fibers, which comprises treating the textile material with a liquor containing per liter of water (a) from 1 to 10 grams of a peroxide activator, (b) from 10 to 80 ml of hydrogen peroxide, (c) from 1 to 10 grams of urea, (d) from 1 to 10 grams of a surfactant and a compound of weakly alkaline reaction in such an amount that the pH of the liquor is 7 to 8.

    STILBENE COMPOUNDS AND PROCESS FOR THE MANUFACTURE THEREOF

    公开(公告)号:CA1111036A

    公开(公告)日:1981-10-20

    申请号:CA327257

    申请日:1979-05-09

    Applicant: HOECHST AG

    Abstract: of the disclosure: Compounds of the formula (I) wherein X is O or S, R1 and R2, each are hydrogen, fluorine, chlorine, phenyl, alkyl, alkoxy, dialkylamino, trialkylammonium, acylamino or optionally functionally modified carboxy or sulfo groups, two adjacent radicals R1 and R2 optionally forming together a phenylene, a lower alkylene or a 1,3-dioxapropylene group; and A is a group of the formulae or in which R3 is an alpha-, beta- or gamma-pyridyl, pyridylmethylene, thiophenyl, furanyl, benzofuranyl, pyrazinyl, pyrimidinyl or pyridazinyl group. These compounds, which are suitable as optical brighteners, are prepared by reaction of a compound of the formula with a compound of the formula R3 - Z wherein Y is a group and Z is -COCl or vice versa.

    59.
    发明专利
    未知

    公开(公告)号:DE2238734A1

    公开(公告)日:1973-02-22

    申请号:DE2238734

    申请日:1972-08-05

    Applicant: HOECHST AG

    Abstract: 1399509 Bis-benzofuran derivatives HOECHST AG 11 Aug 1972 [13 Aug 1971] 37574/72 Heading C2C [Also in Division C3] The invention comprises compounds of the formula wherein A and A 1 each represents an aromatic, mono- or polynuclear ring system in which two adjacent C atoms are linked to the furan nucleus as indicated, R and R 1 each represents H, halogen, C 1 to C 4 alkyl, phenyl which may be substituted by C 1 to C 4 alkyl or alkoxy, halogen or COOH or SO 3 H or their functional derivatives, and B represents a continuously conjugated chain of C atoms, which may be completely or partly a constituent of a carbocyclic or heterocyclic ring system and which is conjugated with the adjacent double bonds of the two furan nuclei ; the ring systems A and A 1 may bear one or more non-chromophoric substituents. They may be obtained by (I) condensing intramolecularly a compound of the formula (II) condensing, intramolecularly, a compound of the formula wherein B 11 is a continuously conjugated chain of C atoms, (III) condensing, intermolecularly, a compound of the formula with a compound of the formula wherein D and E represent direct bonds or are continuously conjugated chains of C atoms which may be completely or partly constituents of a carbocyclic or heterocyclic ring system and which are conjugated with the adjacent double bonds of the furan nucleus, and R 6 represents an alkyl, cycloalkyl, aralkyl or aryl radical ; and (IV) condensing, intramolecularly, a compound of the formula whereby the radical B 11 migrates to the 2- position of the furan rings. Examples are given for the preparation of the compounds. They are useful as optical brightening agents. Compounds of Formula IV are obtained by reacting compounds of formula wherein M is an alkali or alkaline earth metal, with compounds of the formula wherein X is the anion of an inorganic acid.

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