Abstract:
Disclosed is the use of highly functional, highly branched or hyperbranched polycarbonates as a dispersing agent for pigments. Said polycarbonates can be obtained by a) producing one or several different condensation products (K) by a1) reacting at least one organic carbonate (A) of general formula RO[(CO)O] n R with at least one aliphatic, aliphatic/aromatic, or aromatic alcohol (B) comprising at least 3 OH groups while eliminating alcohols ROH, R independently representing a linear or branched aliphatic, aromatic/aliphatic, or aromatic hydrocarbon radical containing 1 to 20 C atoms, and radicals R being optionally interconnected so as to form a ring containing the grouping -O[(CO)O] n -, and n representing an integer ranging from 1 to 5, or a2) reacting phosgene, diphosgene, or triphosgene with the aliphatic, aliphatic/aromatic, or aromatic alcohol (B) while releasing hydrogen chloride, the quantitative ratio between alcohols (B) and the carbonates (A) or the phosgenes in the reaction mixture being selected such that the condensation products (K) on average are provided with one carbonate group or carbamyl chloride group and more than one OH group or one OH group and more than one carbonate group or carbamyl chloride group, and b) intermolecularly reacting the condensation products (K) obtained in step a).
Abstract:
Disclosed are black perylene pigments containing one of the isomers of formula (Ia) or (Ib), wherein the variables have the following meaning: R , R independently represent phenylene, naphthylene, or pyridylene, each of which can be monosubstituted or polysubstituted by C1-C12 alkyl, C1-C6 alkoxy, hydroxy, nitro, and/or halogen; X represents halogen; n represents 0 to 4. The inventive black perylene pigments alternatively contain a mixture of both isomers and are provided with a black number >= 210 in an alkyd/melamine baking enamel.
Abstract translation:黑色苝颜料,式异构体(Ia)或(Ib)中,其中各变量具有以下含义的一个,R <1>,R <2>独立地为亚苯基,亚萘基或亚吡啶基,其中的每一个单或C1取代 -C12烷基,C1-C6烷氧基,羟基,硝基和/或卤素; X卤素; n 0至4,或两种异构体的混合物,并且在醇酸/三聚氰胺烘烤漆中黑色数>≥210。
Abstract:
A device for spectroscopic analysis of liquids by means of attenuated reflected light (ATR) has a fiber optics and prism arrangement (14, 33) to illuminate interface (18) and means (22) to measure the intensity of light beam reflected at interface. The device also has a second such optical system using a beam which is incident on the interface at a different angle, and/or is polarized.
Abstract:
The disclosure is a probelike apparatus (16) for spectroscopic analysis of a fluid medium (19) by attenuated reflection. Two light beams from a light source (11) impinge upon the boundary (18) between a prism (17) and the medium (19) to be analyzed and the intensities of the light beams reflected at the boundary are measured in a detector unit (22). The two light beams differ in their angle of incidence on the boundary and/or in their polarization state. Measurement is preferably carried out under total reflection.
Abstract:
Naphthalocyanines of the general formula I where the variables have the following meanings: R , R , R , R , R , R , R and R are each independently of the others hydrogen, hydroxyl or C1-C20-alkyl or C1-C20-alkoxy whose carbon chains may each be interrupted by from 1 to 4 oxygen atoms in ether function and which may each be phenyl-substituted, R , R , R and R are each independently of the others hydrogen, halogen or C1-C20-alkyl or C1-C20-alkoxy whose carbon chains may each be interrupted by from 1 to 4 oxygen atoms in ether function, Me is two hydrogen atoms, two univalent metal atoms or a bivalent metal atom with or without further substituents for valence saturation, as pigments with isometric particles and a particle size distribution from 10 to 300 nm.
Abstract:
A pigment preparation contains: (A) at least 1 finely divided organic or inorganic pigment, (B) a dispersion medium based on arylsulfonic acid-formaldehyde-condensation product or oxalkylated phenols, (C) an alcoholic acrylic resin, (D) an inorganic or organic base, and (E) water is new. An Independent claim is included for a process for printing laminar or 2-dimensional substrates by ink-jet printing with the preparation.
Abstract:
In coloring paper pulp with pigments having a charged chromophore, a water-soluble pigment precursor is converted into the pigment with a counterion that reduces the solubility of the precursor in the presence of the aqueous paper pulp. An independent claim is also included for colored paper pulp produced by this method.
Abstract:
The principal ingredients in a pigment preparation are (a) a finely divided (in)organic pigment; (b) a dispersant based on an alkylsulphonic acid-formaldehyde condensation product or on oxyalkylated phenols; (c) an alkali-soluble acrylic resin; (d) an (in)organic base; and (e) water.
Abstract:
Black perylene pigments (I) comprising fused-ring dipyridoperylenedione isomers and having a black number of at least 210 in an alkyd/melamine stoving lacquer are new. Black perylene pigments (I) comprising fused-ring dipyridoperylenedione isomers of formula (Ia) and/or (Ib) and having a black number of at least 210 in an alkyd/melamine stoving lacquer are new. [Image] [Image] R 1>, R 2>phenylene, naphthylene or pyridylene, all optionally substituted with 1-12C alkyl, 1-6C alkoxy, OH, NO 2 and/or halo; X : halo; n : 0-4. Independent claims are also included for: (1) producing the perylene pigments from synthetically produced crude pigments by either comminution and optionally recrystallization from a liquid medium or comminution and simultaneous recrystallization; (2) producing the crude pigments by condensing perylene-3,4;9,10-tetracarboxylic acid dianhydride with an aromatic ortho-diamine and cyclizing the product, where condensation and cyclization are effected in a reaction medium comprising phenol or a non-fused nitrogen-containing heteroaromatic compound; (3) pigment synergists comprising isomers of formula (Ia') or (Ib'). [Image] [Image] R 1>', R 2>' : phenylene, naphthylene or pyridylene, all substituted with COOM, COOR 3>, CONR 3>R 4>, COO -> N +>R 3>R 4>R 5>R 6>, SO 2NR 3>R 4>, CH 2NR 3>R 4>, CH 2N +>R 3>R 4>R 5>R 6> R 3>COO -> and/or CH 2R 7> and optionally substituted with 1-12C alkyl, 1-6C alkoxy, OH, NO 2 and/or halo; R 3>-R 6>H; 1-12C alkyl or 2-12C alkenyl optionally interrupted by O, S, NR 8>, CO or SO 2 and optionally substituted with OH, halo, aryl, 1-4C alkoxy and/or acetyl; or 3-8C cycloalkyl optionally interrupted by O, S, NR 8> or CO and optionally substituted with acetyl; R 7>phthalimidyl; R 8>H or 1-8C alkyl; M : H or metal; X : halo; n : 0-4.