Process for the preparation of stilbenedicarboxylate esters
    1.
    发明授权
    Process for the preparation of stilbenedicarboxylate esters 失效
    二苯乙烯二羧酸酯的制备方法

    公开(公告)号:US5473098A

    公开(公告)日:1995-12-05

    申请号:US398840

    申请日:1995-03-06

    CPC分类号: C07C67/343

    摘要: Disclosed is a process for the preparation of 4,4'-stilbenedicarboxylate esters by a 4-step process starting with an alkyl p-formylbenzoate and utilizing intermediate phosphite and phosphonate compounds. The steps comprise(1) preparing an alkyl p-(hydroxymethyl)benzoate by hydrogenating an alkyl p-formylbenzoate;(2) contacting the alkyl p-(hydroxymethyl)benzoate of step (1) with a trialkyl phosphite to obtain a phosphite ester compound having the formula: ##STR1## (3) contacting the phosphite ester of step (2) with a catalytic amount of iodine to rearrange the phosphite ester to the corresponding phosphonate ester;and(4) contacting the phosphonate ester compound of step (3) with an alkyl p-formylbenzoate in the presence of an alkali metal alkoxide and an inert solvent to obtain the dialkyl 4,4'-stilbenedicarboxylate.

    摘要翻译: 公开了一种通过四步法由对位甲酰基苯甲酸烷基酯和利用中间体亚磷酸酯和膦酸酯化合物制备4,4'-二苯乙烯二羧酸酯的方法。 步骤包括(1)通过氢化对甲酰基苯甲酸烷基酯制备对 - (羟甲基)苯甲酸烷基酯; (2)使步骤(1)的对 - (羟甲基)苯甲酸烷基酯与亚磷酸三烷基酯接触,得到具有下式的亚磷酸酯化合物:(3)使步骤(2)的亚磷酸酯与催化量 的碘以将亚磷酸酯重排为相应的膦酸酯; 和(4)在碱金属醇盐和惰性溶剂的存在下使步骤(3)的膦酸酯化合物与对甲酰基苯甲酸烷基酯接触,得到4,4'-二苯乙烯二酸二烷基酯。

    Azo dyes from 5-amino-4-nitropyrazole compounds and aniline couplers
    2.
    发明授权
    Azo dyes from 5-amino-4-nitropyrazole compounds and aniline couplers 失效
    来自5-氨基-4-硝基吡唑化合物和苯胺偶联剂的偶氮染料

    公开(公告)号:US4650861A

    公开(公告)日:1987-03-17

    申请号:US514118

    申请日:1983-07-15

    CPC分类号: C09B29/0037 D06P1/18

    摘要: This invention relates to novel azo dyes containing a 4-nitropyrazole azo moiety which may be substituted, for example, with an alkyl group which itself may be substituted, and an aniline coupler which may be substituted. The dyes produce bright red shades on hydrophobic textile fiber including polyesters, polyamides, and cellulose esters and show unexpected improvements in one or more of such properties as fastness to light, wash, ozone, gas such as oxides of nitrogen, perspiration, crock and sublimation, dyeability at desirable low energy levels to deep shades, build, pH stability, bloom resistance, leveling, migration, dye bath exhaustion, dye transfer, and the like.

    摘要翻译: 本发明涉及含有4-硝基吡唑偶氮部分的新偶氮染料,其可以被例如可被取代的烷基取代,以及可以被取代的苯胺偶联剂。 这些染料在疏水纺织纤维上产生明亮的红色色调,包括聚酯,聚酰胺和纤维素酯,并且在一个或多个这样的性能中显示出意想不到的改进,如耐光,耐洗涤,臭氧,气体如氮氧化物,汗,咔咔和升华 ,在期望的低能量下的染色性能达到深色调,构建,pH稳定性,耐开花性,流平性,迁移,染色液染色,染料转移等。

    Azo dyes containing a diazotized 5-amino isothiazol moiety having
thereon a sulfonic acid or salt group
    3.
    发明授权
    Azo dyes containing a diazotized 5-amino isothiazol moiety having thereon a sulfonic acid or salt group 失效
    含有重氮化的5-氨基异噻唑部分的偶氮染料具有磺酸或盐基

    公开(公告)号:US4444684A

    公开(公告)日:1984-04-24

    申请号:US345989

    申请日:1982-02-05

    摘要: This invention relates to azo dyes in which the diazotized amino component bears a sulfonic acid or salt group on its ring. These dyes have excellent dyeing properties on polyamide fibers, particularly nylon carpets and also impart color to cellulose acetate fibers and wool.The dyes correspond to the general formula: ##STR1## wherein R.sup.1 is selected from hydrogen and alkyl; M is H.sup.+, Na.sup.+, K.sup.+, Li.sup.+ or NH.sub.4.sup.+ ; and the coupler C is selected from a variety of couplers including anilines, tetrahydroquinolines, phenols , and the like which may be substituted with known substituents such as halogen, alkyl, alkoxy, acylamido, sulfamoyl, carbamoyl and the like.

    摘要翻译: 本发明涉及偶氮染料,其中重氮化的氨基组分在其环上带有磺酸或盐基。 这些染料在聚酰胺纤维,特别是尼龙地毯上具有优异的染色性能,并赋予醋酸纤维素纤维和羊毛颜色。 染料对应于通式:其中R 1选自氢和烷基; M为H +,Na +,K +,Li +或NH4 +; 并且成色剂C选自多种成色剂,包括可被已知取代基如卤素,烷基,烷氧基,酰氨基,氨磺酰基,氨基甲酰基等取代的苯胺,四氢喹啉,酚等。