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    56.
    发明专利
    未知

    公开(公告)号：SE364319B

    公开(公告)日：1974-02-18

    申请号：SE111270

    申请日：1970-01-29

    Applicant: HOECHST AG

    Inventor： ROESCH G ,  LINKE W ,  SMERZ O ,  SCHINZEL E

    IPC: C07D231/06 ,  C09B57/00 ,  D06L3/12 ,  D06M13/35

    Abstract: 1288545 Optical brightening FARBWERKE HOECHST AG 29 Jan 1970 [30 Jan 1969] 4340/70 Heading DIP Fibrous materials of polymers comprising at least 85% of polyacrylonitrile are optically brightened by impregnating the material with a liquor containing a brightener of general formula in which A represents a branched or unbranched C 2-4 alkylene group, R 1 represents a C 1-4 alkyl group, R 2 represents a C 1-4 alkyl group or the two radicals R 2 together with the nitrogen atom form a saturated heterocyclic ring, X represents a colourless anion and n is 1 or 2, adjusting the liquor content of the material to 5-120% by weight referred to the material and heating, preferably with steam, for 2 seconds to 30 minutes at 100‹-150‹C. If the brightened fabric is to be printed immediately it is preferably subjected to intermediate drying at 50‹-150‹C. Thickeners, for example, starch ether, tragacanth, carob bean flour and crystal gum, are added to prevent migration of the optical brightener during drying. Enhanced brightening is achieved when a non-ionic condensation product of a fatty acid and oxyethylated ammonia and/or a quaternary condensation product of a fatty acid and a low molecular weight aliphatic polyamine is added to the brightening liquor. A second brightener of general formula in which A, R 1 , R 2 , X and n have the meanings specified above, shows a greenish-blue fluorescence and is able when applied in admixture with the compounds of formula II, to compensate the reddish tint of the latter.

    59.
    发明专利
    未知

    公开(公告)号：BR7016461D0

    公开(公告)日：1973-01-18

    申请号：BR21646170

    申请日：1970-01-30

    Applicant: HOECHST AG

    Inventor： ROSCH G ,  LINKE W ,  SMERZ O ,  SCHINZEL E

    IPC: C09B57/00 ,  C07D231/06 ,  D06L3/12 ,  D06M13/35 ,  C08K1/75

    Abstract: 1288545 Optical brightening FARBWERKE HOECHST AG 29 Jan 1970 [30 Jan 1969] 4340/70 Heading DIP Fibrous materials of polymers comprising at least 85% of polyacrylonitrile are optically brightened by impregnating the material with a liquor containing a brightener of general formula in which A represents a branched or unbranched C 2-4 alkylene group, R 1 represents a C 1-4 alkyl group, R 2 represents a C 1-4 alkyl group or the two radicals R 2 together with the nitrogen atom form a saturated heterocyclic ring, X represents a colourless anion and n is 1 or 2, adjusting the liquor content of the material to 5-120% by weight referred to the material and heating, preferably with steam, for 2 seconds to 30 minutes at 100‹-150‹C. If the brightened fabric is to be printed immediately it is preferably subjected to intermediate drying at 50‹-150‹C. Thickeners, for example, starch ether, tragacanth, carob bean flour and crystal gum, are added to prevent migration of the optical brightener during drying. Enhanced brightening is achieved when a non-ionic condensation product of a fatty acid and oxyethylated ammonia and/or a quaternary condensation product of a fatty acid and a low molecular weight aliphatic polyamine is added to the brightening liquor. A second brightener of general formula in which A, R 1 , R 2 , X and n have the meanings specified above, shows a greenish-blue fluorescence and is able when applied in admixture with the compounds of formula II, to compensate the reddish tint of the latter.

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