摘要:
The invention relates to the use of selected dibenzanthrone or isodibenzanthrone derivatives as marking substances for liquids, especially for mineral oils. The invention also relates to fuel and lubricant additive concentrates, in addition to mineral oils containing at least one such dibenzanthrone or isodibenzanthrone derivative.
摘要:
The invention relates to a method for checking the authenticity of goods, comprising marking and identifying the goods. According to the inventive method, (i) a mark is applied to the surface of an article in the form of a pattern with a pattern function M(x, y) in a marking step, said mark creating a local modification of the physically measurable properties of the surface of the article in the area of the mark which cannot be perceived by the eye; (ii) the transmission, reflection, or scattering of analytical radiation by the surface of the article is detected in accordance with the location coordinates (x, y) and the wavelength λ of the analytical radiation, a response function A(x, y, λ) that reflects the intensity of the transmitted, reflected, or scattered analytical radiation is determined in accordance with the local coordinates (x, y) and the wavelength λ, and the correlation of the response function A(x, y, λ) with the previously known pattern function M(x, y) is determined by means of a correlation analysis in an identification step, the mark being detected using the correlation.
摘要:
The invention relates to a high-sensitivity method for detecting differences between the physically measurable properties of a sample P and a reference R. Said method is characterized by carrying out the following steps: (i) providing a sample P, (ii) providing a reference sample R, (iii) providing a two-dimensional reference field RF, (iv) producing a first two-dimensional pattern from areas of reference sample R and reference field RF and a second two-dimensional pattern from areas of sample P and reference field RF, the first and the second pattern being described by a location-dependent and wavelength-dependent pattern function M(x, y, ?), (v) detecting, while using a detector, for the first pattern at a freely selectable point in time t0 and for the second pattern at a point in time t, the transmission, reflection or scattering of analytical radiation through the first pattern or the second pattern depending on the position coordinates (x, y) of the first or second pattern and the wavelength ? of the analytical radiation, thereby determining, for the first pattern, a first pattern response function M0(x, y, ?, t0), comprising spatially separate areas of a reference response function R0(x, y, ?, t0) and a first reference field response function RF0(x, y, ?, t0), determining, for the second pattern, a second pattern response function Mt(x, y, ?, t), comprising spatially separate areas of a sample response function Pt(x, y, ?, t) and a second reference field response function RFt(x, y, ?, t), the functions M0 and Mt each reflecting the intensity of the transmitted, reflected or scattered analytical radiation depending on the position coordinates (x, y) for the first or second pattern and the wavelength ? at different points in time of detection t0 or t, (vi) correcting the sample response function in such a manner that the location, time and wavelength-dependent variations caused by the detector are eliminated from the sample response function Pt, by using the first and second reference field response function RF0 and RFt, thereby obtaining a corrected sample response function Pt, korr, (vii) using the corrected sample response function Pt, korr and the reference response function R0 to determine a change in the physically measurable property.
摘要:
The invention relates to pigment preparations containing as principal ingredients: A) at least one organic or inorganic pigment in the form of fine particles, B) a dispersing agent on the basis of arylsulfonic acid-formaldehyde condensation products or of oxalkylated phenols, C) an alkali-soluble acrylic resin, D) an inorganic or organic base and E) water.
摘要:
The invention relates to a method for producing polymer coated pigment particles, whereby a solution of a polymer in a first solution is mixed with a second solution, wherein the polymer is insoluble or is hardly soluble, in the presence of finely distributed pigment particles. The choice of polymer enables the pigment particle to be modified as desired.
摘要:
The invention relates to dye preparations containing the following in relation to the weight of the preparation: 0.1 to 30 wt.% of one or more dyes from the category of mono- or polyazo dyes containing no acid groups, 0.1 to 20 wt.% of a dispersing agent with a base consisting of an arylsulphonic acid-formaldehyde condensation product or 0.1 to 20 wt.% of a water-soluble dispersing agent with an oxalkylated phenol base, and optionally, water. The invention also relates to the use of the inventive dye preparations as inks in ink-jet processes and for textiles sublimation-transfer pressing.
摘要:
Dye mixtures containing one or more thienyl and/or thiazolazo dyes with a coupling component of the aminothiazol, anilin or tetrahydroquinoline series, one or more dyes from the class of monoazo or diazo, methine, azamethine, anthraquinone, nitro or quinophthalone dyes, the maximum absorption of which is at a wavelength of 410 to 520 nm, and possibly one or more dyes from the class of monoazo or diazo, methine, azamethine, anthraquinone, nitro or quinophthalone dyes, the maximum absorption of which is at a wavelength of 600 to 700 nm, where the half-width value of the maximum absorption is at least 2000 cm-1, a process for the thermal transfer of said dye mixtures and their use in dyeing or printing synthetic materials.
摘要:
The invention concerns naphtholactam derivatives of formula (I), in which: R1 represents hydrogen, optionally substituted C¿1?-C6 alkyl, C5-C6 cycloalkyl or substituted phenyl; R?2 and R3¿ represent hydrogen, C¿1?-C8 alkanoyl, optionally substituted benzoyl, optionally substituted C2-C4 alkyl, optionally substituted C2-C4 alkenyl, optionally substituted C2-C4 alkinyl, a halogen, nitro, sulphamoyl, optionally substituted hydroxy, optionally substituted mercapto, C1-C6 alkylsulphonyl or optionally substituted phenylsulphonyl; R?4¿ represents hydrogen or, with R3, a group of formula (II); R5 represents hydrogen or C¿1?-C6 alkyl; R?6¿ represents cyano, carbamoyl, C¿1?-C4 mono- or dialkylcarbamoyl, carboxyl or C1-C4 alkoxycarbonyl; and R?7¿ represents substituted C¿1?-C4 alkyl, optionally substituted C5-C13 alkyl or benzoyl. Also disclosed is the use of these derivatives for dyeing or printing textiles.