STILBENE TYPE OF OPTICAL BRIGHTENER

    公开(公告)号:AU4688379A

    公开(公告)日:1979-11-15

    申请号:AU4688379

    申请日:1979-05-09

    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.

    MIXTURE OF OPTICAL BRIGHTNERS
    46.
    发明专利

    公开(公告)号:PH19044A

    公开(公告)日:1985-12-11

    申请号:PH25321

    申请日:1981-03-05

    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.

    MIXTURES OF OPTICAL BRIGHTENERS
    47.
    发明专利

    公开(公告)号:AU540524B2

    公开(公告)日:1984-11-22

    申请号:AU6814281

    申请日:1981-03-06

    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.

    48.
    发明专利
    未知

    公开(公告)号:RO73275A

    公开(公告)日:1984-06-21

    申请号:RO9087777

    申请日:1977-06-30

    Applicant: HOECHST AG

    Abstract: Mixtures of optical brighteners containing 0.05 to 1% of a 4-benzoxazolystilbene derivative and 1 to 0.05% of a 1,4-bis-benzoxazolyl- or bis-benzthiazolyl-naphthalene derivative. These mixtures show a higher degree of whiteness than an equal amount of only one of the two components.

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