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    • 3. 发明授权
    • Process for the preparation of hydroxybenzylphosphonates
    • 制备羟基苯甲酰磷酸酯的方法
    • US5157141A
    • 1992-10-20
    • US616549
    • 1990-11-21
    • Paul DubsWerner StegmannReto LuisoliRoger Martin
    • Paul DubsWerner StegmannReto LuisoliRoger Martin
    • C07F9/40
    • C07F9/4056
    • A process for the preparation of compounds of the general formula I ##STR1## in which R.sub.1 is hydrogen or methyl, R.sub.2 and R.sub.3 independently of one another are C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.8 cycloalkyl, phenyl, C.sub.7 -C.sub.9 phenylalkyl or halogen, R.sub.2 is additionally hydrogen and R.sub.7 and R.sub.8 independently of one another are C.sub.1 -C.sub.18 alkyl, phenyl or C.sub.7 -C.sub.18 alkylphenyl, which comprises reacting a phenol of the formula II ##STR2## in which R.sub.1 to R.sub.3 have the meaning described above, with formaldehyde or paraformaldehyde, an amine of the formula IIINR.sub.4 R.sub.5 R.sub.6 IIIin which R.sub.4 is C.sub.1 -C.sub.4 alkyl and R.sub.5 and R.sub.6 independently of one another are hydrogen or C.sub.1 -C.sub.4 alkyl, and a phosphite of the formula IV ##STR3## in which R.sub.7 and R.sub.8 have the meaning described above and R.sub.9 has the meaning given for R.sub.7 and R.sub.8, at a temperature of 0.degree.-200.degree. C.Some compounds of the formula I are novel.
    • 其中R 1是氢或甲基,R 2和R 3彼此独立地是C 1 -C 18烷基,C 5 -C 8环烷基,苯基,C 7 -C 9苯基烷基或卤素的通式I的化合物的方法,R 2是 另外氢和R 7和R 8彼此独立地是C 1 -C 18烷基,苯基或C 7 -C 18烷基苯基,其包括使式II的苯酚(其中R 1至R 3具有上述含义)与甲醛或多聚甲醛反应, 其中R 4为C 1 -C 4烷基且R 5和R 6彼此独立地为氢或C 1 -C 4烷基的式III的NR 4 R 5 R 6 III的胺,和其中R 7和R 8具有所述含义的式IV的亚磷酸酯 R9和R7具有对于R 7和R 8的含义,在0℃-200℃的温度下。式I的一些化合物是新的。
    • 6. 发明授权
    • Process for the preparation of liquid mixtures of alkylated
2-(2-hydroxyphenyl)benzotriazoles
    • 制备烷基化2-(2-羟基苯基)苯并三唑的液体混合物的方法
    • US4921966A
    • 1990-05-01
    • US284265
    • 1988-12-14
    • Werner StegmannReto Luisoli
    • Werner StegmannReto Luisoli
    • B01J31/02C07B61/00C07D249/20G03C7/392
    • C07D249/20G03C7/39256
    • A process for the preparation of a mixture of 2-(2-hydroxyphenyl)benzotriazole which is liquid at room temperature by alkylating 2-(2-hydroxy-5-methylphenyl)benzotriazole with a C.sub.8 -C.sub.14 .alpha.-olefin in the melt at elevated temperature, in the presence of sulfonic acid as catalyst, comprising using not less than 0.5 mol of the acid catalyst and 1.5-3 mol of .alpha.-olefin per mol of 2-(2-hydroxy-5-methylphenyl)benzotriazole, carrying out the alkylation in the temperature range from 165.degree. to 190.degree. C., separating the crude product phase upper phase) from the sulfonic acid phase, and working up said crude product phase by distillation by means of a thin-film evaporator, a thin-film evaporator fitted with a distillation column, or a short path distillation apparatus.
    • 制备2-(2-羟基苯基)苯并三唑的混合物的方法,该混合物在室温下通过在熔融物中升高时将2-(2-羟基-5-甲基苯基)苯并三唑与C 8 -C 14α-烯烃烷基化 温度,在作为催化剂的磺酸存在下,包括使用不少于0.5mol的酸催化剂和每摩尔2-(2-羟基-5-甲基苯基)苯并三唑1.5-3mol的α-烯烃,进行 在165℃至190℃的温度范围内进行烷基化,将粗产物相上层相分离)与磺酸相分离,并通过薄膜蒸发器蒸馏处理所述粗产物相,将薄膜 配有蒸馏塔的蒸发器或短路蒸馏装置。