摘要:
1,4-Diketopyrrolo[3,4-c]pyrroles of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen, Cl, Br, CH.sub.3, OCH.sub.3, CN or phenyl, and at least one of the substituents R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a group--O(CH.sub.2).sub.n X or --O(CH.sub.2 CH.sub.2 O).sub.p CH.sub.2 CH.sub.2 Xwhereinn is an integer from 2 to 12, andp is an integer from 1 to 3,X is a heterocyclic radical selected form the group consisting imidazolyl, pyrazolyl, triazolyl, piperazinyl, pyridinyl, pyrrolyl, thiazolyl, oxazolyl, benzoxazolyl, indolyl, benzthiazolyl, benzimidazolyl, benzotriazolyl, morpholinyl, piperidinyl and pyrrolidinyl, which radical is unsubstituted or substituted by one or two methyl groups, or is a group --NR.sub.5 R.sub.6 or --N[(CH.sub.2).sub.n -NR.sub.5 R.sub.6 ].sub.2, whereinR.sub.5 and R.sub.6 are each independently of the other hydrogen, C.sub.1 -C.sub.6 alkyl or C.sub.5 -C.sub.6 cycloalkyl.Pigment compositions comprising a minor amount of said compounds and diketopyrrolopyrrole pigments have excellent rheological and colouristic properties, especially in paint systems and in printing inks.
摘要:
Dye composition for human keratinous fibres, and for hair in particular, containing at least 5,6-dihydroxyindole and at least 0.1% by weight of a foam generator in a cosmetically acceptable aqueous medium, packaged under pressure in an aerosol device in the presence of a propellent agent, under such conditions as to form a dyeing foam having a density below or equal to 0.4 g/cm.sup.3 from the said device.
摘要翻译:用于人角质纤维的染料组合物,特别是毛发,其含有至少5,6-二羟基吲哚和至少0.1重量%的在化妆品可接受的水性介质中的泡沫发生器,在气溶胶装置的压力下, 在从所述装置形成密度低于或等于0.4g / cm 3的染色泡沫的条件下,推进剂。
摘要:
A process for the preparation of 4,4',7,7'-tetrachloro-thioindigo pigment which comprises treating a finely divided crude 4,4',7,7'-tetrachloro-thioindigo pigment in anhydrous form at temperatures of from 50.degree. to 180.degree. C. with a nitroaromatic substance which is volatile in steam and has a melting point of 50.degree. C. or below under normal conditions.
摘要:
This invention relates to a solar energy storage material comprising N,N'-bis(phenylacetyl)indigo dissolved in a polar solvent. Of the indigo derivatives capable of storing the solar energy by the photoisomerization from trans-isomer to cis-isomer of the molecule, all of the compounds obtained so far had an energy storage capacity of only 30 cal or less per 1 g of the compound and also a high thermal isomerization rate from cis form to trans form in solution. Thus, they cannot be called a solar energy storage material of practical value.In the case of the present invention, on the other hand, when N,N'-bis(phenylacetyl)indigo is dissolved in a polar solvent such as acetonitrile, it is possible to store about 60 cal of energy per 1 g of N,N'-bis(phenylacetyl)indigo, and the half-life period of isomerization from cis to trans from in acetonitrile at 17.degree. C. is 1,264 minutes, which is also a satisfactory value for practical application.
摘要:
This invention is a method for storing light energy using an indigo derivative. Among indigo derivatives capable of storing light energy by the photoisomerization of the molecule from the trans-form to the cis-form, compounds heretofore obtained have been soluble only in expensive solvents such as benzene, toluene, chloroform, carbon tetrachloride and the like and harmful substances.On the other hand, the indigo derivative of this invention has the form of a pyridinium salt, is soluble in water and/or ethanol, and permits employment of safe and inexpensive water and/or an alcohol as a solvent.The indigo derivative of this invention converted from the trans-form to the cis-form by irradiation with sunlight and storing sunlight energy liberates the aforesaid stored energy as heat on addition of a catalyst and/or a heat trigger.
摘要:
An aniline is converted to a 3-lower hydrocarbonthiooxindole by processes already known in the art, the product converted to a 3-halo-3-lower hydrocarbonthiooxindole by oxidative halogenation, and the product subjected to hydrolysis to form the desired isatins.
摘要:
The specification describes an improved process for dyeing cellulosic textiles with indigo which comprises reducing indigo dye to its soluble leuco form, incorporating an aldehyde addition product to the reduced indigo dye solution, immersing a cellulosic textile, and exposing the textile to air to oxidize the dye to its insoluble color. The specification describes also the reducing agent, the aldehyde addition product and the conditions required for optimum dyeing.
摘要:
BIS - (2H) - 1,4 - THIAZIN - 3 - ON - 2 - YLIDENES) ACID AND SULFONIC ACID GROUPS ARE NOVEL VALUABLE PIGMENTS WITH HIGH MIGRATION AND LIGHT FASTNESS. THEY EXHIBIT ALSO HIGH TINCTORIAL POWER, TRANSPARENCY AND HEAT STABILITY.