摘要:
A process for producing a liquid formulation of a basic azo dye from a phenylenediamine I, which may be alkyl or alkoxy substituted, by diazotizing and coupling in acidic solution comprises diazotizing the phenylenediamine with sodium nitrite in the presence of at least two organic acids comprising at least one first acid (A) having a pkA value of ≦40 and at least a second acid (B) having a pKA value ≧4.1 and performing a nanofiltration after the coupling has ended.
摘要翻译:通过在酸性溶液中重氮化和偶联从苯二胺I(其可以是烷基或烷氧基取代)制备碱性偶氮染料的液体制剂的方法包括在至少两种有机酸存在下,将亚苯基二胺与亚硝酸钠重氮化,所述有机酸包括 至少一种第一酸(A)具有<= 40的pk u>值和至少第二酸(B),其具有pK A> A> = 4.1并进行 偶联后的纳滤过程已经结束。
摘要:
Cationic polyazo dyestuffs which can be obtained by reacting diaminobenzene derivatives of the general formula ##STR1## wherein R represents hydrogen, C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy or halogen,if appropriate in a mixture with up to 30% of aromatic monoamines of the formula ##STR2## wherein R.sup.2 represents hydrogen, C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy, halogen or C.sub.1 - to C.sub.4 -acylamino and n represents 1 to 3,with 0.5 to 0.75 mole of a salt or ester of nitrous acid per mole of diamine and then with 1 to 4 moles of an alkylene oxide of the formula ##STR3## wherein R.sup.3 represents hydrogen or an optionally hydroxyl-, alkoxy- or halogen-substituted C.sub.1 - to C.sub.4 -alkyl radical,are used--preferably in the form of their solutions--for dyeing paper, leather and anionically modified synthetic fibres.
摘要:
Naphtholactam dyestuffs of the formula ##SPC1##Wherein A represents the remaining members of an aromatic ring system and R represents hydrogen, alkyl, aralkyl, cycloalkyl, alkyl, aryl or an alkylene radical bonded to the naphthalene ring in the 2-position, as well as thier preparation and their use for dyeing and printing natural and synthetic materials.
摘要:
A compound represented by formula (I): Formula (I) wherein Z1 and Z2 each are atoms necessary for forming an aromatic ring; V1 and V2 each are a substituent W1 or W2; when at least one V1 is W1, at least one V2 is W2, or when at least one V1 is W2, at least one V2 is W1; r is 1 to 4; s is 1 to 4; M1 is a counter ion; m1 is the number necessary for neutralizing charge; W1 is a hydroxyl, primary- or secondary- or tertiary-amino, acylamino, or sulfonamido group; W2 is a nitro, cyano, alkoxycarbonyl, aryloxycarbonyl, alkyl- or aryl-sulfonyl, carbamoyl, sulfamoyl, alkenyl, alkynyl, aryl, heterocyclic, sulfo, carboxyl, heterocyclic oxy, ammonio, alkyl- or aryl-sulfinyl, alkyl- or aryl-sulfonyl, acyl, or aryl- or heterocyclic-azo group; and the aromatic ring may have a substituent other than V1 and V2.
摘要翻译:式(I)表示的化合物:式(I)其中Z 1和Z 2各自为形成芳环所必需的原子; V 1和V 2各自为取代基W 1或W 2; 当至少一个V 1是W 1时,至少一个V 2是W 2 2,或者当在 至少一个V 1是W 2,至少一个V 2是W 1; r为1〜4; s是1到4; M 1是抗衡离子; m 1 SUB>是中和电荷所需的数量; W 1是羟基,伯或仲或叔氨基,酰氨基或亚磺酰氨基; W 2是硝基,氰基,烷氧基羰基,芳氧基羰基,烷基 - 或芳基 - 磺酰基,氨基甲酰基,氨磺酰基,烯基,炔基,芳基,杂环,磺基,羧基,杂环氧基,氨基,烷基 - 或 芳基 - 亚磺酰基,烷基 - 或芳基 - 磺酰基,酰基或芳基 - 或杂环 - 偶氮基; 芳环可以具有除V 1和V 2以外的取代基。
摘要:
Liquid formulations of basic azo dyes are prepared from unsubstituted or C.sub.1 -C.sub.4 -alkyl- or C.sub.1 -C.sub.4 -alkoxy-substituted m-phenylenediamine by diazotizing and coupling in carboxylic acid solution, which comprises performing the reaction with 0.76 to 0.95 mole of nitrile, calculated as nitrous acid and based on 1 mole of m-phenylenediamine, and then heating the resulting reaction mixture at from 60.degree. C. to the boiling point of the reaction mixture.