34.
    发明专利
    未知

    公开(公告)号:BR8302622A

    公开(公告)日:1984-01-17

    申请号:BR8302622

    申请日:1983-05-18

    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.

    MIXTURES OF OPTICAL BRIGHTENERS
    36.
    发明专利

    公开(公告)号:DE3160803D1

    公开(公告)日:1983-10-06

    申请号:DE3160803

    申请日:1981-02-25

    Applicant: HOECHST AG

    Abstract: Mixtures of optical brighteners consisting of (a) 1 to 99 weight % of one or several compounds of the formula 1 (1) (b) 99 to 1 weight % of one or several compounds of the formula 2 (2) wherein n is 0 or 1, X is oxygen or sulfur, B is a group of the formulae +TR and the other substituents are defined a specified in the description.

    STILBENE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND THEIR USE AS OPTICAL BRIGHTENERS

    公开(公告)号:DE2965604D1

    公开(公告)日:1983-07-14

    申请号:DE2965604

    申请日:1979-05-08

    Applicant: HOECHST AG

    Abstract: 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 in which R3 is an alpha-, beta- or gamma-pyridyl, pyridyl-methylene, 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.

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