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公开(公告)号：US4092104A
公开(公告)日：1978-05-30
申请号：US668913
申请日：1976-03-22
申请人： Ray Allen Clarke
发明人： Ray Allen Clarke
摘要： A process for making yellow, basic azomethine dyes for paper, leather and textiles; the process being an improvement in the process of reacting an azo dye base precursor of the formula ##STR1## wherein A is phenyl or substituted phenyl, with dimethyl sulfate in solution, and in the presence of an acid-binding agent, the improvement comprising reacting dimethyl sulfate in a molar excess of from 100% to 300% per mole of precursor, in an aqueous solution having at least 30 weight percent water and from 2.0 to 3.5 moles of magnesium oxide (as the acid-binding agent) per mole of precursor.
摘要翻译： 制造用于纸，皮革和纺织品的黄色碱性偶氮甲碱染料的方法; 该方法是使式（IMAGE）其中A为苯基或取代的苯基的偶氮染料基前体与溶液中的硫酸二甲酯反应，并且在酸结合剂存在下，使改进包括使 每摩尔前体摩尔过量的100％至300％的硫酸二甲酯，在每摩尔前体具有至少30重量％水和2.0-3.5摩尔氧化镁（作为酸结合剂）的水溶液中 。
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公开(公告)号：US3973903A
公开(公告)日：1976-08-10
申请号：US448363
申请日：1974-03-05
申请人： Ray Allen Clarke
发明人： Ray Allen Clarke
摘要： A process for making yellow, basic azomethine dyes for paper, leather and textiles, and concentrated, stable solutions thereof; the process being an improvement in the process of reacting an azo dye base precursor of the formula ##SPC1##Wherein A is phenyl or substituted phenyl, with dimethyl sulfate in solution, and in the presence of an acid-binding agent,THE IMPROVEMENT COMPRISING EMPLOYING AN AQUEOUS SOLUTION HAVING AT LEAST 30 WEIGHT PERCENT WATER, EMPLOYING DIMETHYL SULFATE IN A MOLAR EXCESS OF FROM 100% TO 300%, AND EMPLOYING FROM 2.0 TO 3.5 MOLES OF MAGNESIUM OXIDE AS THE ACID-BINDING AGENT PER MOLE OF PRECURSOR.
摘要翻译： 制造用于纸，皮革和纺织品的黄色碱性偶氮甲碱染料及其浓缩的稳定溶液的方法; 该方法是使式WHEREIN A为苯基或取代的苯基的偶氮染料基前体与溶液中的硫酸二甲酯以及在酸结合剂的存在下反应的方法的改进。包含使用水性溶液的改进 至少30重量百分比的水，在100％至300％的摩尔过量中使用二甲基硫酸盐，并从2.0至3.5摩尔的氧化镁作为前驱体的酸性粘合剂。
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