摘要:
Disclosed is a method for welding together plastic parts with the aid of laser radiation having a wavelength outside the visible range. According to the inventive method, the joining zone of one of the plastic parts that are to be joined together is provided with a substantially colorless material that is transparent in the visible range of the electromagnetic spectrum while absorbing the laser radiation. The inventive method is characterized in that at least one non-ionic, laser radiation-resistant compound that has a minimum thermal resistance of 300 °C and is selected among the group comprising the polycyclic organic compounds, doped tin oxides, and hexaborides MB6 of lanthanide metals and alkaline earth metals M is used as the laser radiation-absorbent material. Also disclosed are preparations that are suitable for producing plastic parts which are welded together with the aid of laser radiation whose wavelength lies outside the visible range, said preparations containing: a) a thermoplastic matrix polymer that is suitable for embodying the plastic parts; b) at least one essentially colorless, non-ionic, laser radiation-resistant material which is transparent in the visible range of the electromagnetic spectrum, absorbs the applied laser radiation, has a minimum thermal resistance of 300 °C, and is selected among the group comprising the polycyclic organic compounds, doped tin oxides, and hexaborides MB6 of lanthanide metals and alkaline earth metals M; c) one or several optional UV stabilizers; and d) other optional additives.
摘要:
Disclosed is the use of luster pigments based on lamellar metallic substrates, which are coated with a dielectric layer that has a low refractive index and does not absorb visible light, for pigmenting high molecular weight materials.
摘要:
A description is given of the use of naphthalene-1,8-dicarboxylic monoimides of the formula (I), in which R1 is hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, aryl or heteroaryl and R2 is a radical containing at least one π electron system containing a carbon atom and at least one further atom selected from carbon, oxygen, and nitrogen, with the proviso that the radical contains at least one atom other than carbon; to protect organic material from the damaging effects of light, of compositions which comprise at least one naphthalene-1,8-dicarboxylic monoimide of the formula (I) in an amount which provides protection from the damaging effects of light, and at least one organic material, and of new naphthalene-1,8-dicarboxylic monoimides (I).
摘要:
The invention relates to 9-cyano-substituted perylene-3,4-dicarboxylic acid monoimides (I) where the variables have the following meanings: X = a chemical bond, optionally substituted C1-C30 alkylenes, C5-C8 cycloalkylenes, arylenes, heteroarylenes, C1-C20 alkylarylenes, C1-C20 alkylheteroarylenes, aryl- or heteroaryl-C1-C20 alkylenes, Y = a functional group Y', or a polymerisable group P, or X-Y together = a group R, Y' = amino, hydroxy, -COOH, -SO3H, chlorine or bromine, P = a group (II), A, B independently = H, C1-C6 alkyl, phenyl, or together form a cyclopentene or cyclohexene ring, which comprise the double bond to which A and B are bonded, Q = a chemical bond, a -O-, -NR2-, -S-, -OCO-, -OCOO-, -OCONR3-, -NR3CO-, -NR3COO-, -NR3CONR4-, -CO-, -COO-, -CONR3-, -SO2-O-, -SO2NR3-, -O-SO2- or -NR3SO2- group, n = 0, 1, 2 or 3 and R = H, optionally-substituted C1-C30 alkyl, C5-C8 cycloalkyl, aryl or heteroaryl.
摘要:
The invention relates to rylene dyes of the general formula (I), wherein the variables have the following meanings: R represents hydrogen; optionally substituted C1-C30 alkyl-C5-C8-cycloalkyl, aryl or hetaryl; R'represents optionally substituted C2-C30 alkyl or C5-C8 cycloalkyl, substituted methyl; and n is 0 or 1. The invention also relates to the preparation and use of said dyes for coloring highly molecular organic and inorganic materials and to 9-amino-perylene-3,4-dicarboxylic acid imides (Va) as their intermediate products.
摘要:
Disclosed are 1,7-disubstituted perylene-3,4,9,10-tetracarboxylic acid dianhydrides (I) and perylene-3,4,9,10-tetracarboxylic acids (Ia) in which R represents optionally substituted aryloxy, arylthio, hetaryloxy or hetarylthio. Also disclosed are the production of these compounds and their use as pigments, laser dyes and precursors for the production of fluorescent dyes, polymer colorants, pigments and pigment additives, as well as 1,7-disubstituted perylene-3,4,9,10-tetracarboxylic acid diimides (VI) as intermediate products for these compounds.
摘要:
The invention relates to a method for the production of terylene-3,4:11,12-tetracarboxydiimides (I) in which the variables have the following meanings: R, R' independently = H, optionally substituted alkyl or cycloalkyl, aryl or heteroaryl, R1 = H or alkyl; R2 = H, alkyl, optionally substituted aryl or heteroaryl, whereby a perylene-3,4-dicarboxyimide (II) is reacted with a naphthalene-1,8-dicarboxyimide (III), where X = H, bromine or chlorine, in the presence of a base-stable, high boiling organic solvent and an alkali or alkaline earth metal base.
摘要:
Disclosed is a method for converting perylen-3,4:9,10-tetracarboxylic acid diimides of general formula I in which R and R represent unbranched, branched, or cyclical C1-C8-alkyl, into a form that is suitable for use as a fluorescent dye by a) solving or suspending the perylen-3,4:9,10-tetracarboxylic acid diimides in an organic or inorganic solvent, the molecules of which have a molecular volume of = 230 ANGSTROM , at 0 to 250 DEG C; b1) cooling the solution obtained in step a) to or below the crystallization temperature and at the same time optionally removing excess solvent until crystals start forming in case an organic solvent is used or adding water or diluted aqueous solutions of the solvent until crystals start forming in case an inorganic solvent is used, and maintaining said solution at said temperature for further crystallization; or b2) cooling the suspension obtained in step a) to or below the crystallization temperature if the temperature in step a) was above the crystallization temperature and maintaining the suspension at said temperature for further crystallization; c) isolating the solvate crystals formed in step b); and d) then removing the solvent from the solvate crystals. Also disclosed are novel crystalline forms of perylen-3,4:9,10-tetracarboxylic acid diimides.
摘要:
Tert. alkylphenoxy substituted polycyclic compounds of general formula (I), in which the variables have the following meanings: P = a conjugated polycyclic group, optionally aryl substituted, stable to base and acid and not containing residues from the group -CO-NH-CO-, -COOH and -CO-O-CO-; R = C1-C8 alkyl, the carbon chain of which may be interrupted by one or several groups of -O-, -S-, -NR1-, -CO- and/or -SO¿2?- and which may be mono- or serially-substituted by C1-C6 alkoxy or a 5- to 7-membered heterocyclic group, bonded by means of a nitrogen atom, which can contain further heteroatoms and can be aromatic, C5-C8 cycloalkyl, the carbon skeleton of which may be interrupted by one or several groups of -O-, -S-, -NR?1¿-, -CO- and/or -SO¿2?- and may optionally be substituted with C1-C6 alkyl; R?1¿ = H or C¿1?-C6 alkyl; Hal = chlorine and/or bromine; m = a number from 0 to 15; n = a number from 1 to 16, whereby the sum m + n ≤ 16, production and use thereof.
摘要翻译:叔。 (I)的烷基苯氧基取代的多环化合物,其中变量具有以下含义:P =共轭多环基团,任选被芳基取代,对碱和酸稳定并且不含来自基团-CO-NH-CO- ,-COOH和-CO-O-CO-; R = C 1 -C 8烷基,其碳链可以被-O - , - S - , - NR 1 - , - CO-和/或-SO 2 - 的一个或几个基团间隔,并且可以是单 - 或通过可含有其他杂原子且可为芳族的氮原子键合的C1-C6烷氧基或5至7元杂环基连续取代的C 5 -C 8环烷基,其碳骨架可以是 被-O - , - S-,-NR 1 - , - CO-和/或-SO 2 - 的一个或几个基团中断,并且可以任选地被C 1 -C 6烷基取代; R 1 = H或C 1 -C 6烷基; Hal =氯和/或溴; m =从0到15的数字; n =从1到16的数字,由此总和m +n≤16,其生产和使用。