摘要:
7-Hydroxy-coumarin compounds of the general formula ##STR1## wherein A represents a heterocyclic radical, which can contain non-ionic substituents customary in dye-stuff chemistry,R represents hydrogen or cyano andZ represents oxygen or NH andthe ring B can be further substituted non-ionically,are used for impregnating paper, in particular paper which has to be made forgery-proof.
摘要:
The subject of the invention are dyestuffs of the formula ##STR1## wherein R is hydrogen or a hydrocarbon radicalQ is arylX is .dbd.C(W)-- or .dbd.N--,W is a nitrile ester or amide groups andA represents the remaining members of a heterocyclic radical.The dyestuff are preferably suitable for dyeing polyester fibres which are dyed in orange, red, violet or bluish shades with good fastness to light.
摘要:
The invention relates to compounds of the formula ##STR1## WHEREIN Z denotes OH or NR.sup.1 R.sup.2,R.sup.1 denotes hydrogen, alkyl, aralkyl, cycloalkyl or aryl,R.sup.2 denotes hydrogen or alkyl or, conjointly with R.sup.1, forms an alkylene chain.The dyestuffs are outstanding suitable for the dyeing of polyester fibres. The yellow and reddish dyeings are distinguished by good fastness to light.
摘要:
Positively charged electrophotographic toners contain, besides customary resin and pigment particles, an additive which increases the cationic charge and has the general formula(X.sup.1).sup.- K.spsp.+.sup.1 -Y.sup.1 -A-Y.sup.2 -K.spsp.+.sup.2 (X.sub.2).sup.- (I)wherein the symbols have the meaning mentioned in the description.
摘要:
Postively charged electrophotographic toners contain, in addition to conventional resin and pigment particles, an additive reinforcing the cationic charge, of the general formula ##STR1## in which R.sup.1 and R.sup.2 each represent hydrogen, chlorine, bromine, hydroxyl, C.sub.1 -C.sub.4 -alkoxy or carboxyl,A represents C.sub.1 -C.sub.5 -alkylene or --C.sub.6 H.sub.4 --CH.sub.2 --(m or p),m represents 0 to 1,n represents 1 or 2K.sup..sym. represents ##STR2## R.sup.3 represents C.sub.1 -C.sub.18 -alkyl, carbamoyl-C.sub.1 -C.sub.2 -alkyl, C.sub.1 -C.sub.4 -alkoxycarbonyl-C.sub.1 -C.sub.2 -alkyl, benzyl, cyclohexyl or allyl,R.sup.4 represents C.sub.1 -C.sub.4 -alkyl or a single bond linked to D,R.sup.5 represents C.sub.1 -C.sub.4 -alkyl,D represent --CH.sub.2, --CH.sub.2 --CO--, --CH.sub.2 --CO--NH--or --CH.sub.2 --CO--NH--CH.sub.2 --W represents ##STR3## --CO--or a single bond, Z represents --CH.sub.2 --, ##STR4## --O--, --S--, --SO.sub.2 --or a single bond and An.sup..crclbar. represents an anion.
摘要翻译:除了常规的树脂和颜料颗粒之外,带电荷的电子照相色调剂还包含增强阳离子电荷的添加剂,其通式为:其中R 1和R 2各自表示氢,氯,溴,羟基, C 1 -C 4 - 烷氧基或羧基,A表示C 1 -C 5亚烷基或-C 6 H 4 -CH 2 - (m或p),m表示0至1,n表示1或2 K(+)表示R 3表示C1- C18烷基,氨基甲酰基C1-C2-烷基,C1-C4-烷氧基羰基-C1-C2-烷基,苄基,环己基或烯丙基,R4代表C1-C4-烷基或与D连接的单键,R5代表C1-C4 - 烷基,D表示-CH2,-CH2-CO-,-CH2-CO-NH-或-CH2-CO-NH-CH2-W表示-CO-或单键,Z表示-CH2-, -O - , - S - , - SO 2 - 或单键,An( - )表示阴离子。
摘要:
Biphenyl compounds of the formula ##STR1## in which the substituents have the meanings given in the description,are obtained by amidomethylation of the corresponding starting compounds and, if appropriate, subsequent sulphonation. The new compounds are used, for example, for the preparation of dyestuff precursors, dyestuffs, plastics and medicaments.
摘要:
Naphthostyril is obtained in high space/time yields by reacting 1-naphthyl isocyanate with an anhydrous aluminium halide in an inert solvent, carrying out the reaction in a homogeneous solution using 700-1.800 ml of solvent per mol of 1-naphthyl isocyanate in the temperature range from 140.degree.-160.degree. C. and -- after hydrolysis of the reaction mixture -- separating the phases. Naphthostyril is an intermediate for preparation of dyestuffs.
摘要:
Fluorescent dyestuffs of the general formula ##STR1## wherein X denotes 0, S or N--R.sub.1,Y and Z denote halogen, hydroxyl, amino, alkoxy, aralkoxy, cycloalkoxy, aryloxy, alkylmercapto, arylmercapto, alkylamino, dialkylamino, acylamino, alkyl or aryl andR.sub.1 denotes hydrogen, alkyl, aralkyl, aryl or acyl, andThe rings A and B and the cyclic and acyclic radicals R.sub.1, Y and Z can carry non-chromophoric substituents which are customary for whiteners. andThe ring A, furthermore, can be fused to 1 or 2 carbocyclic, partially saturated or aromatic rings,Are suitable for the whitening of synthetic, semi-synthetic and natural organic high-molecular materials.
摘要:
The invention relates to monomethine dyestuffs of the formula ##STR1## wherein Z.sup.1 is alkyl, cycloalkyl, aralkyl or arylZ.sup.2 is hydrogen or Z.sup.1Q is CN, COOR.sup.2 or CONR.sup.3 R.sup.4,R.sup.1 u.R.sup.4 is hydrogen or alkyl,R.sup.2 is alkyl, alkenyl, aralkyl, cycloalkyl or aryl andR.sup.3 is alkyl, cycloalkyl, aralkyl, aryl or acyl.The dyestuffs are suitable for the dyeing of natural and synthetic fibers, which are dyed in orange or red shades with high brilliancy.
摘要:
Reactive dyestuffs of the formula ##STR1## wherein W, T, T', n, R, R.sub.1, R.sub.2, p and Z have the meaning given in the description, their preparation and their use for dyeing and printing materials containing N and materials containing hydroxyl groups, especially fibre materials. The dyestuffs are particularly suitable as fluorescent dyestuffs for dyeing or printing natural and synthetic polyamides and natural and regenerated cellulose, especially cotton. They combine a high fixing yield with outstanding wet fastness properties.