摘要:
A process for preparing 1-aminoanthraquinone, comprising the steps of:A. reacting o-chloromethylphenylisocyanate with at least an equivalent amount of benzene in anhydrous hydrofluoric acid at a temperature of about -10.degree. to 200.degree. C to form the lactam of 2-amino-diphenylmethane-2'-carboxylic acid,B. saponifying the lactam of 2-amino-diphenylmethane-2'-carboxylic acid with aqueous alkali at a temperature above about 100.degree. C to form the 2-amino-diphenylmethane-2'-carboxylic acid,C. contacting the 2-amino-diphenylmethane-2'-carboxylic acid with an acid condensation agent, thereby to convert the carboxylic acid to 4-amino-anthrone, andD. contacting the 4-aminoanthrone with an oxidizing agent in an acid or alkaline medium, thereby to convert the aminoanthrone to 1-aminoanthraquinone. Special conditions are also recited for carrying out the individual steps to obtain high yields.
摘要:
A 2-acylamino-2'-carboxy-diphenylmethane is treated with an acid condensing agent such as sulfuric acid or chlorosulfonic acid thereby to produce the corresponding 4-acylamino-anthrone which can then be oxidized, as with hydrogen peroxide or oxygen, to the corresponding 1-acylamino-anthraquinone.
摘要:
2-Chloromethylphenylcarbamic acid fluoride is prepared by reacting 2-chloromethylphenylisocyanate with anhydrous hydrofluoric acid. The product prepared can be reacted further with anhydrous hydrofluoric acid under pressure to prepare 2-aminodiphenylmethane-2'-carboxylic acid lactam.
摘要:
4-Novel hydroxyanthrones of the formula ##STR1## wherein R.sup.11 and R.sup.17 are as set forth in the specification. AND A PROCESS FOR THE PREPARATION OF 4-HYDROXYANTHRONES WHEREIN (2-HALOGENO-METHYL)-PHENYL HALOFORMATES OF THE FORMULA ##STR2## wherein R.sup.5 -R.sup.7 are as set forth in the specification are reacted, with an aromatic carbocyclic compound of the formula ##STR3## wherein R.sup.1 to R.sup.4 are as set forth in the specification in the presence of a Friedel-Crafts catalyst, optionally in a solvent, at a temperature in the range of from 0.degree. to 300.degree. C.
摘要:
In the saponification of 1-acetamino-anthraquinone to produce the corresponding 1-amino-anthraquinone, the improvement which comprises effecting the saponification with aqueous alkali such as a hydroxide, oxide or carbonate of an alkali metal or an oxide or hydroxide of an alkaline earth metal. The saponification is effected in water, which may contain an organic solvent such as alcohol.
摘要:
A rotating chip removing tool, such as a drilling and chamfering tool, and a milling cutter, each of which have at least one cutting insert or cutting plate. The cutting plate has a guide recess that adjoins the underside of the cutting plate. A plate seat for accommodating the cutting plate is provided on a tool body of the chip removing tool and has a guide fillet or surface which corresponds to the guide recess.
摘要:
A rotary tool for drilling and chamfering, which takes place in one common advance, essentially comprises a base body, a drill clamped centered therein and a chamfering tool disposed on the end of the base body toward the drill tip and having a cutter body tip disposed next to the flank of the lateral free face of the drill. The chamfering tool can be radially adjusted in relation to the drill in a direction pointing at right angles in respect to the drill axis.
摘要:
Azo class reactive dyestuffs have been found which have the general formula (1) ##STR1## and in which Z.sup.1 and Z.sup.2 represent a reactive group from the pyrimidine series, X represents SR.sup.1, OR.sup.2 or NR.sup.3 R.sup.4, and the remaining substituents have the meanings given in the description, which dyestuffs are particularly suitable for dyeing hydroxyl- and amido-containing fibres, in particular cotton.
摘要:
A gearing is described for locks of panic doors. The gearing has a first gearing part (17)which is rotatable around a first axis (17a) and can be connected with an actuating member (18) for a lock nut or the like, and a second gearing part (28) which is rotatable around a second axis perpendicular to the first axis and is connected with a handle (1). One of the gear parts is provided with a driver pin (24) arranged parallel to and at a distance from the first axis and the other gearing part is provided with a guide part cooperating with the latter for the purpose of converting the rotating movement of the handle (1) into a rotating movement of the actuating member (18).
摘要:
New reactive dyestuffs which, in the form of the free acid, correspond to the following formula ##STR1## wherein the substituents have the meaning given in the description, are suitable for dyeing and printing materials containing hydroxyl groups or amide groups, in particular cellulose materials.