摘要:
The invention relates to a method for distortion-free pigmentation of partly-crystalline plastics, chraracterised in that a phthalocyanine pigment is used which has been heated to a temperature of at least 80° C. as a suspension in an acid-free organic medium in the presence of a base.
摘要:
The use of compounds of the general formula I where A is ═N— or ═CH—; X when A is ═N— is methyl or a radical of the formula IIa or when A is ═CH— is an R radical; Y is an R radical or a radical of the formula IIb with either X being a radical of the formula IIa or Y being a radical of the formula IIb; R is hydrogen, halogen, C1-C4-alkyl, —SO3H, —SO3−Me+, —SO3−N+R1R2R3R4, —SO2NR1R2, —CH2NR1R2, —CH2R5, —COOH, —COO−N+R1R2R3R4, —COOR6 or —COR6; R1, R2, R3 and R4 are each independently hydrogen; C1-C22-alkyl or C2-C22-alkenyl whose carbon chain may in either case be interrupted by one or more —O—, —S—, —NR7—, —CO— or —SO2− moieties and/or which may be substituted by one or more of hydroxyl, halogen, aryl, C1-C4-alkoxy and acetyl; C3-C8-cycloalkyl whose carbon skeleton may be interrupted by one or more —O—, —S—, —NR7— or —CO— moieties and/or which may be substituted by one or more of hydroxyl, halogen, aryl, C1-C4-alkoxy and acetyl; hydroabietyl, abietyl or aryl; R1 and R2 or R1, R2 and R3 may combine to form a 5- to 7-membered cyclic radical which contains the nitrogen atom and may contain further hetero atoms; R5 is a radical of the formula IIb′ R6 is one of the R1 alkyl radicals; R7 is hydrogen or C1-C4-alkyl; Me is an alkali metal ion; Z and Z′ are each independently arylene which may be substituted by one or more of halogen, —SO3H, —SO3−Me+, —SO3−N+R1R2R3R4, and C1-C12-alkyl, and the rings B1 and B2 may each be independently additionally substituted by one or more identical or different R radicals other than hydrogen, as crystallization modifiers for organic pigments.
摘要:
The invention relates to platelet-shaped interference pigments for effect paints for painting objects of daily use, especially vehicle bodies, with the interference pigments including liquid crystal polymers (LCP) with main and/or side groups—mesogens—which are arranged at least approximately chirally-nematically or the like. In order to be able to paint different colored backgrounds in a covering fashion using the transparent interference pigments, the interference pigments are built up in several layers and also have at least one and preferably two interfering layer(s) of liquid crystal polymers and even of a single, preferably centrally located, light-absorbent layer, with the light-absorbent layer absorbing at least a portion of the visible light spectrum. Advantageously the light-absorbent layer can absorb light in the entire visible light spectrum, in other words appear black. It is also possible for it to be made light-absorbent within those partial areas of the visible light spectrum that lie outside one of the colors of the interference pigments. A method is also disclosed for manufacturing the multilayer interference pigments.
摘要:
A process for preparing perylene pigments of the general formula (Ia) or (Ib) or mixtures thereof, by reacting perylenetetracarboxylic acids or functional derivatives thereof with aromatic diamines, where R1, R2 may be the same or different and may each independently be phenylene, naphthylene or pyridylene, where R1, R2 may each be mono- or polysubstituted by C1-C22-alkyl, C3-C22-alkenyl, C1-C22-alkoxy, hydroxyl and/or halogen, X1, X2, X3, X4, X5, X6, X7, X8 may be the same or different and may each independently be hydrogen or halogen, wherein the reaction is performed in the presence of a secondary or tertiary amine in an aqueous reaction medium.
摘要:
Isoindoline pigments of the general formula I in which the variables are defined as follows: R1 is C1-C4-alkyl; R2 is hydrogen or C1-C4-alkyl, whose value expressing ease of dispersion in LDPE is ≦10 and which require a reduction ratio of ≧5 to obtain ⅓ of standard depth of shade.
摘要:
Dispersible pigment granules are produced by mixing an aqueous suspension of an organic pigment with an aqueous emulsion of a wax-like additive. The aqueous emulsion is then allowed to coagulate and the resulting aqueous dispersion is spray dried.
摘要:
Black perylene pigments which comprise one of the isomers of the formula Ia or Ib in which R1, R2 are each independently phenylene, naphthylene or pyridylene, each of which may be mono- or polysubstituted by C1-C12-alkyl, C1-C6-alkoxy, hydroxyl, nitro, and/or halogen; X is halogen; n Is from 0 to 4, or comprises a mixture of both isomers and has a blackness value ≧210 in an alkyd/melamine baking varnish.
摘要:
The invention relates to the use of liquid colouring preparations, containing at least one pigment and 0.5 to 10 wt. % of at least one dye, based on the pigment, for the decorative colouring of derived timber products.
摘要:
The invention relates to platelet-shaped interference pigments for effect paints for painting objects of daily use, especially vehicle bodies, with the interference pigments including liquid crystal polymers (LCP) with main and/or side groups--mesogens--which are arranged at least approximately chirally-nematically or the like. In order to be able to paint different colored backgrounds in a covering fashion using the transparent interference pigments, the interference pigments are built up in several layers and also have at least one and preferably two interfering layer(s) of liquid crystal polymers and even of a single, preferably centrally located, light-absorbent layer, with the light-absorbent layer absorbing at least a portion of the visible light spectrum. Advantageously the light-absorbent layer can absorb light in the entire visible light spectrum, in other words appear black. It is also possible for it to be made light-absorbent within those partial areas of the visible light spectrum that lie outside one of the colors of the interference pigments. A method is also disclosed for manufacturing the multilayer interference pigments.