Abstract: A radiation sensitive colored composition comprising (A) a copolymer having, as constitutional repeating units, at least ((1) a monofuctional macromonomer having the specified structure and weight-average molecular weight of 3.times.10.sup.4 or below, (2) a monomer having the specified structure and (3) a quaternary ammonium salt monomer; (B) a radiation sensitive compound; and (C) a pigment: which can provide a color filter having excellent pattern reproducibility because of its high suitablity for dispersion of fine-grain pigment and its high storage stability.

Abstract: Compounds of the formula (I) ##STR1## in which R.sub.1 and R.sub.2 are identical or different and are hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.6 -C.sub.10 -aryl, (C.sub.6 -C.sub.10)-aryl-(C.sub.1 -C.sub.6)-alkyl or (C.sub.1 -C.sub.6)-alkyl-(C.sub.6 -C.sub.10)-aryl, it being possible for the alkyl and/or aryl radicals to be substituted by hydroxyl, C.sub.1 -C.sub.6 -alkoxy, C.sub.6 -C.sub.10 -aryloxy or halogen,with the proviso that R.sub.1 and R.sub.2 are not simultaneously hydrogen,R.sub.3 is a radical of the formula (II) or (III) ##STR2## in which Y and R.sub.5 are as defined in the description, are valuable colorants for the mass coloring of polymers, in electrophotographic toners and developers, in powder coating materials and in ink-jet inks.

Abstract: A propylene-ethylene copolymer composition is obtained which has good moldability and an excellent balance of rigidity, toughness, and impact-strength. The composition has a melt flow rate of 10 to 300 g/10 minutes and is obtained by producing 60 to 95% by weight, based on the weight of whole polymer, of a propylene polymer having a melt flow rate (ASTM D1238) in the range of 100 to 1,000 g/10 minutes and having a ratio (Cf) of integrated values of the propylene polymer dissolved in o-dichlorobenzene at a temperature of lower than 112.degree. C., and a temperature of 112.degree. C. or higher, respectively, of 0.5 or less, by carrying out polymerization of propylene in the presence of a highly stereoregular catalyst and hydrogen in a polymerization step (I), and then producing 5 to 40% by weight, based on the weight of whole polymer, of an ethylene-propylene copolymer by feeding ethylene and propylene to the propylene polymer to react so that the content of ethylene becomes 30 to 80% by weight.

Abstract: A method of preparing photochromic materials useful for optical applications, and photochromic materials prepared by such method, are described. Such method comprises polymerizing a blend of a polyol[(meth)acryloyl terminated carbonate] monomer and a photochromic amount of an organic photochromic substance, thereby forming a photochromic material. A preferred polyol[(meth)acryloyl terminated carbonate] monomer is diethylene glycol bis[(methacryloyloxy)ethylene carbonate]. Polymerization may be performed by free radical initiation using thermal initiators, photoinitiators or a combination of such initiators. Photochromic materials prepared by such method may be used in optical applications, e.g., photochromic lenses.

Abstract: The present invention relates to a black polymeric composition suitable for use in films, fibers and molded articles, where a soluble, easily dispersed colorant is desirable. The black polymeric composition provides a high black color quality and is small enough to function as a black colorant in microdenier fibers. The black polymeric composition comprises a thermoplastic resin in an amount between about 50 weight percent and about 99.9 weight percent of the black polymeric composition, and a black dye composition in an amount between about 0.1 weight percent and about 50 weight percent of the black polymeric composition. The black dye composition contains a black indanthrone compound as a major component. As used herein, black indanthrone compounds are defined as compounds having the general structure represented by Formula I: ##STR1## wherein R is hydrogen or at least one group independently selected from C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.

Abstract: A fluorescent yellow article containing a blend of an N,N'-disubstituted 3,4:9,10-perylenebis(dicarboximide) dye and a fluorescent yellow-green dye soluble in a polymeric matrix and meeting the chromaticity requirements of CIE and ASTM and having a fluorescence luminance factor of greater than 5, as well as a method of preparing such articles is described. Also described is a fluorescent retroreflective article containing a color layer having first and second sides, wherein the article includes retroreflective elements on one side of the color layer or a retroreflective base sheet disposed on one side of the color layer, where the color layer includes the above-mentioned fluorescent yellow article.

Abstract: A thermal transfer sheet comprises a substrate film and a heat fusible ink layer disposed on one surface of the substrate film, in which the heat fusible ink layer is formed from an ink composition comprising a coloring agent and a heat fusible binder, said coloring agent comprising a violet pigment expressed by the following formula: ##STR1## (in the formula, each of R.sup.1 and R.sup.3 is any one of a methyl and an ethyl and R.sup.2 is a phenyl), and said heat fusible binder mainly comprising a wax.

Abstract: The present invention relates to the field of photochromic material, in particular of photochromic compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for computers, multimedia applications and the like. The photochromic compounds have the following formula: ##STR1## wherein the substituents are defined in the specification.

Abstract: Process for the preparation of compounds of the general formula (I) ##STR1## by reaction of aromatic dicarboxylic acids of the formula (II) ##STR2## or anhydrides and/or esters thereof with aromatic diamines of the formula (III) ##STR3## wherein A and B have the meaning given in the description, characterized in that the reaction of (II) with (III) is carried out in a reaction medium which comprises water and a hydrotropic compound which has a dielectric constant .epsilon. of 20 to 60 at 25.degree. C.

Abstract: Described are novel photochromic spiro(indoline) fluoranthenoxazine compounds having certain substituents on the 1 and 3 positions of the indoline portion of the compounds and which may be represented by the following graphic formula: ##STR1## Also described are polymeric organic host materials that contain or that are coated with such compounds.

Abstract: Novel quinophthalone compounds, which are represented by the following formula (1): ##STR1## R.sub.1 -R.sub.5 each independently represents a hydrogen or halogen atom or a hydroxy, linear or branched alkyl, substituted or unsubstituted cycloalkyl, halogenated alkyl, alkoxyalkyl, alkoxy, nitro, amino, alkylamino, carboxyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkylcarbonylamino, alkylcarbonyloxy or cyano group; R.sub.6 -R.sub.17 each independently represents a hydrogen or halogen atom or a hydroxyl, alkyl, halogenated alkyl, alkoxy, nitro, amino, alkylamino, carboxyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkylcarbonyloxy or cyano group; m and n each stands for 0 or 1; and A represents a substituent, are yellow orange dyestuffs suitable for polarizing films.

Abstract: The use of sulfuric monoesters of the formulae (I) and (II)R.sup.1 --O--(CH.sub.2 O).sub.n --SO.sub.3 .sup.- M.sup.+ (I)R.sup.1 --CO--NR.sup.2 --(CH.sub.2 O)(.sub.n+1)--SO.sub.3 .sup.- M.sup.+ (II)in whichR.sup.1 is a straight-chain or branched alkyl group of 10 to 24 carbon atoms,R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.6 -alkyl group,M.sup.+ is a hydrogen ion, an alkali metal ion, 1/2 an alkaline earth metal ion, or an ammonium ion of the formula N.sup.+ R.sup.3 R.sup.4 R.sup.5 R.sup.6, where the substituents R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently of one another are each hydrogen atoms or C.sub.1 -C.sub.6 -alkyl groups, which alkyl groups can be substituted by 1 to 3 hydroxyl groups, andn is a number from 0 to 4; or of a mixture of at least two sulfuric monoesters of the formulae (I) and/or (II),for preparing surface-treated pigments from the classes of the quinacridones and dioxazines.

Abstract: An aromatic polycarbonate composition having improved color stability and improved hydrolytic stability, while maintaining good processing properties, which composition consists of an aromatic polycarbonate and a stabilizer system consisting of at least one organic phosphorous containing additive and hexamethylene tetra amine.

Abstract: A process for the production of a molding, fiber or film which can be caused to fluoresce by an electrical voltage which comprises using linear mixtures comprising a fluorescent dye from the perylene series and a thermoplastic polymer having a degree of crystallinity of less than 10%.

Abstract: Described are novel photochromic heterocyclic fused indenonaphthopyran compounds having a substituted or unsubstituted heterocyclic ring fused to the g, h, i, n, o or p side of the indenonaphthopyran. These compounds may be represented by either of the following graphic formulae: ##STR1## Also described are polymeric organic host materials that contain or that are coated with such compounds.

Abstract: Organic ophthalmic articles are photochromic and have high indices of refraction.

Abstract: A coating composition is formed from an acid-set coating varnish and a pigment composition. The pigment composition includes a specific organic dyestuff derivative and a specific basic-group-containing resin-type pigment dispersant. The coating composition excels in pigment dispersibility, nonflocculation properties, noncrystallizability and fluidity. When used as a coating, the coating composition has excellent color tone, gloss, hardness, weather resistance, and solvent resistance.

Abstract: Described are novel photochromic heterocyclic fused indenonaphthopyran compounds having a substituted or unsubstituted heterocyclic ring fused to the g, h, i, n, o or p side of the indenonaphthopyran. These compounds may be represented by either of the following graphic formulae: ##STR1## Also described are polymeric organic host materials that contain or that are coated with such compounds.

Abstract: A fluorescent yellow article comprising polyolefin copolymer, perylene imide dye N,N'-bis(2,6-di-isopropylphenyl)-3,4:9,10-perylenebis(dicarboximide), and at least one yellow-green dye selected from the group consisting essentially of Lumogen F Yellow 083, CI Solvent Yellow 98, CI Solvent Yellow 160:1, Oraset Yellow 8GF, CI Solvent Green 4, CI Solvent Green 5, CI Pigment Yellow 101 and CI Solvent Yellow 131 wherein the resultant article has chromaticity coordinates (x,y) within the area defined by (0.425,0.480), (0.465,0.535), (0.557,0.440), and (0.500,0.410) in terms of the CIE 1931 Standard Colorimetric System and measured using 0/45 geometry and evaluated with CIE Standard Illuminant D65.

Abstract: Described are novel reversible photochromic 2H-naphtho[1,2-b] pyran compounds, examples of which are compounds having certain substituents at the number 5 carbon atom of the naphtho-portion of the naphthopyran and at the 2-position of the pyran ring. Certain substituents may also be present at the number 6, 7, 8, 9 or 10 carbon atoms of the naphtho portion of the naphthopyran. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indoline) type compounds, are also described.

Abstract: Described are novel reversible photochromic 2H-naphtho[1,2-b]pyran compounds, examples of which are compounds fused on the naphtho-portion of the naphthopyran ring with an indeno group or certain heterocyclic substituents. Certain substituents are also present at the 2 and 5 positions and sometimes at the 6 position of the naphthopyran ring. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(indoline) type compounds, are also described.

Abstract: Described are novel reversible photochromic 3H-naphtho[2,1-b]pyran compounds, of the following graphic formula: ##STR1## wherein R.sub.1 is hydrogen or alkyl, R.sub.2 is hydrogen or preferably a carboalkoxy group and R.sub.3 is hydrogen or preferably an alkyl group, provided that either R.sub.1 or R.sub.2 is hydrogen, and B and B' are the aryl groups phenyl or naphthyl, a heterocyclic aromatic group or together form a spiro adamantylene group. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., spiro(oxazine) type compounds, are also described.

Abstract: A composite is provided having improved toughness without reduction in stiffness comprising a polymer matrix having fibers embedded therein wherein the polymer of the matrix is substantially beta polypropylene or a beta polypropylene-olefin copolymer. The composite is made by combining a nucleating agent with a polymer composition selected from the group consisting of alpha polypropylene, an alpha polypropylene-olefin copolymer, alpha polypropylene containing fibers therein and an alpha polypropylene-olefin copolymer having fibers therein, and when the polymer is polypropylene or polypropylene-olefin copolymer, also independently adding fiber to the polymer or copolymer and thereafter inducing nucleation whereby a composite of improved stiffness with no reduction in toughness is formed.

Abstract: Dyestuffs of the formula ##STR1## wherein Z denotes a radical to complete a 3,4- or 2,3-pyridinylene, a 4,5-pyrimidinylene, a 3,4- or 4,5-pyridazinylene or a 2,3-pyrazinylene system andX, Y, m and n have the meanings given in the description,which are particularly suitable for bulk dyeing plastics, in particular thermoplastics, have been found.

Abstract: The invention concerns photochromic compounds with general formula (I): ##STR1## where R.sup.a, R.sup.b and R.sup.c represent hydrogen; alkyl, aryl, OR, SR, COR or COOR, where R represents hydrogen, alkyl or aryl, amino with formula NR.sub.1 R.sub.2, where R.sub.1 and R.sub.2 each represent hydrogen, alkyl, cycloalkyl, or aryl, R.sub.1 and R.sub.2 may together form a heterocycle containing four to seven members with the nitrogen atom and may intracyclically contain one or more heteroatoms selected from nitrogen, oxygen, sulphur, or a halogen atom; a mono- or polyhaloalkyl; an NO.sub.

Abstract: A hydroxy-functional polymeric dispersant which is substantially free of acid groups, amine groups, and ethylenic unsaturation, the dispersant being especially adapted for dispersing pigments therein and being compatible with a variety of film-forming polymers, said dispersant being the free radical addition polymerization reaction product of a mixture of monomers consisting essentially of:(a) 15-30% by weight styrene; and(b) 15-30% by weight of at least one alkyl methacrylate monomer having 1 to 16 carbon atoms in the alkyl group; and(c) 20-60% by weight of at least one alkyl acrylate monomer having 1 to 16 carbon atoms in the alkyl group; and(d) 7-25% by weight of at least one hydroxy-functional ethylenically unsaturated monomer copolymerizable with monomers (a) (b) and (c);wherein said polymeric dispersant has a weight average molecular weight of 18,000 to 24,000, a number average molecular weight of 4,500 to 7,400, and a polydispersity of 2.9 to 4.2.

Abstract: Phthaloperinone dyestuffs of the general formula (I) ##STR1## wherein Z denotes SO.sub.2 or CO,A represents optionally substituted alkyl or aryl,and the other substituents have the meanings given in the description, are prepared by condensation of corresponding phthalic acids or functional derivatives thereof and optionally substituted 1,8-naphthalene-diamines.The dyestuffs according to the invention have very good fastnesses and are employed in processes for bulk dyeing plastics.

Abstract: A process for dyeing synthetic polyamide comprising applying to the polyamide a compound of formula I or II ##STR1## in which R.sub.2 is hydrogen, trifluoromethyl, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, cyano, nitro, hydroxyl, amino, C.sub.1-4 alkylamino, di-(C.sub.1-4)alkylamino, phenylamino, N-C.sub.1-4 alkyl-N-phenylamino; benzoylamino, acyl, acyloxy or acylamino,Me is a divalent metal atom;R.sub.1 is 1,2-phenylene, 1,2-, 2,3- or 1,8-naphthalene or 2,2'-diphenylene, the phenylene and naphthalene groups of R.sub.1 being unsubstituted or mono- or di-substituted by R.sub.2a where R.sub.2a has a significance of R.sub.2 other than hydrogen or by 3 or 4 halogen atoms; or in the naphthalene group two adjacent carbon atoms can be bridged by --NH--CO--NH--, --N.dbd.C(CH.sub.3)--NH--, --N.dbd.C(C.sub.6 H.sub.5)--NH--, --CO--N(C.sub.6 H.sub.5)--CO--, --CO--NH--CO--, ##STR2## R.sub.3 is ##STR3## where R is hydrogen or C.sub.1-4 alkyl unsubstituted or substituted by 1 to 4 groups selected from halogen, cyano, C.

Abstract: 1,2-Naphthaloperinone dyestuffs of the formula (I) ##STR1## wherein Z denotes the radical for completion of a 1,2-naphthylene system and X, Y, n and m have the meaning given in the description, are prepared by condensation of substituted or unsubstituted naphthalene-1,2-dicarboxylic acids with substituted or unsubstituted naphthalene-1,8-diamines.The dyestuffs according to the invention have very good fastness properties and are employed in processes for bulk dyeing of plastics, preferably of vinyl polymers and polyesters.

Abstract: A hydroxy functional polymeric dispersant which is substantially free of acid groups, amine groups, and ethylenic unsaturation, the dispersant being especially adapted for dispersing pigments therein and being compatible with a variety of film-forming polymers, said dispersant being the free radical addition polymerization reaction product of a mixture of monomers consisting essentially of:(a) 15-30% by weight styrene; and(b) 15-30% by weight of at least one alkyl methacrylate monomer having 1 to 16 carbon atoms in the alkyl group; and(c) 20-60% by weight of at least one alkyl acrylate monomer having 1 to 16 carbon atoms in the alkyl group; and(d) 7-25% by weight of at least one hydroxy-functional ethylenically unsaturated monomer copolymerizable with monomers (a) (b) and (c);wherein said polymeric dispersant has a weight average molecular weight of 18,000 to 24,000, a number average molecular weight of 4,500 to 7,400, and a polydispersity of 2.9 to 4.2.

Abstract: A melt-stable, pigmented thermoplastic molding composition is disclosed. Accordingly, to the composition which contains polycarbonate resin and pigment there is imparted an improved level of melt stability upon the incorporation therewith of an additive amount of a melt stabilizer conforming to ##STR1## where R.sub.1, R.sub.2, R.sub.3 and n are defined. In an additional embodiment the invention relates to a color concentrate containing polycarbonate resin, up to 30% of a pigment and an effective amount of said stabilizer.

Abstract: Described are novel reversible photochromic spiro(indoline) naphthoxazine compounds of improved photocolorability that may be graphically represented by the formula, ##STR1## In preferred embodiments, R.sub.1 is allyl, alkoxyalkyl, and alkyl; each R.sub.2 is alkyl or alkoxy; R.sub.3 and R.sub.4 are alkyl; R.sub.5 is alkoxycarbonyl; and R.sub.6 is hydroxy, alkoxy, or carboxy, e.g., acetoxy. Also described are organic host materials that contain or that are coated with such compounds. Articles such as ophthalmic lenses or other plastic transparencies that incorporate the naphthoxazine compounds or combination thereof with complementary photochromic compounds, e.g., naphthopyran or benzopyran compounds, are also described.

Abstract: A polymer composite contains colorant molecules dispersed therein. The colorant molecules can be dispersed in the polymer or bound to the polymer molecules. When the polymer is a polyamide, the polyamide is in a noncrystalline state due to the inhibition of crystallization imparted by the size and shape of the colorant molecules because the colorant is separated on a molecular level. A high colorant availability is obtained. A method of producing the polymer composite includes the steps of forming a metastable polymer resin layer, applying a film of colorant to the layer, stabilizing the layer, dissolving the stable layer in a solvent, aspirating the solution to remove impurities and aggregates and then removing the solvent. A polymer composition can be produced by mixing the polymer composite with a polymer.

Abstract: A violet quinacridone pigment composition comprising a pigmentary 2,9-dichloroquinacridone pigment having a specific surface area below 75 m.sup.2 /g and a sulfonated indanthrone or copper phthalocyanine. The compositions have excellent fastness properties when used for pigmenting engineering plastics.

Abstract: A process utilizing carbazole dioxazine crude, having a specific surface area of from 2 to 20 m.sup.2 /g and an average particle size of 0.5 to 20 .mu.m, as a pigment to color high molecular weight organic materials is disclosed. The process is especially useful for producing multicolor effects and camouflage effects and for use in automotive coatings. Compositions containing the carbazole dioxazine crude and a high molecular weight organic material are also disclosed.

Abstract: A thermoplastic resin composition comprises:100 parts by weight of at least one polyamide resin, and0.01 to 20 parts by weight of at least one fluidity modifier selected from the group consisting of:Succinic anhydride,hexamethylenetetramine and1,12-diaminododecane.

Abstract: Compounds of formula ##STR1## wherein R is C.sub.7 -C.sub.21 alkyl, C.sub.4 -C.sub.18 alkenyl, C.sub.5 -C.sub.12 cycloalkyl or C.sub.5 -C.sub.6 cycloalkyl-substituted C.sub.1 -C.sub.4 alkyl,R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen, chloro, bromo, methyl or methoxy,Z is a direct bond or --O--, --S--, --NH--, --CO--, --SO.sub.2 -- or --NHCO--, andn is 0 or 1.These compounds have excellent suitability as pigments for coloring organic material of high molecular weight, especially polyvinyl chloride, polyolefins and paints.

Abstract: A colorant for natural or synthetic resinous or polymeric materials, having the formula A--[SO.sub.2 --N(R.sub.2)--Y].sub.1-4 ; wherein: R.sub.2 is selected for example from hydrogen, methyl, cyclohexyl, phenyl or Y; A is a nonionic metallophthalocyanine chromophore which can be substituted for example with halogen, alkyl.

Abstract: Pigment preparations consisting essentially of (a) at least one pigment based on perylene-3,4,9,10-tetracarboxylic dianhydride or on corresponding monoimides or diimides of tetracarboxylic acid monoanhydride, or a halogenation product thereof, (b) at least one pigment dispergent based on perylene-3,4,9,10-monoimide substituted on one or both imide nitrogen atoms by alkylene or arylene sulphonic or carboxylic acid groups or on corresponding diimides of tetracarboxylic acid monoanhydride, or a halogenation product thereof. The dispergents used appreciably enhance the key properties of perylene pigments, such as dispersibility, coloring power, stability to flocculation, transparency, rheological behavior and surface properties of the application medium. These new preparations are suitable for the pigmentation of high-quality lacquers and synthetic resins.

Abstract: Perylenetetracarboxylic diimides which contain a radical in the same molecule on one imide nitrogen which acts as an anion but contain a radical on the other imide nitrogen which acts as a cation, and on this basis form inner salts, are available by reaction of sulfo-containing alkylamines with perylenetetracarboxylic monoanhydride monoalkylaminoalkylimides or by reaction of alkylaminoalkylamines with perylenetetracarboxylic monoanhydride monosulfoalkylimides. As a result of their characteristic structural principle, these novel perylene compounds have excellent dispersing properties, in particular for pigments of the same chemical classes of compounds and can even be used themselves as pigments (colorants) depending on the substituent.

Abstract: A heat and oxidation stabilized polymeric article, preferably fiber or film, is prepared by applying to the article a composition which comprises effective amounts of a nitrogen-containing antioxidant and a compatible carrier. When the composition is applied as a process finish, the carrier is a lubricant which is the reaction product of an alkylene oxide with a compound selected from the group consisting of a fatty acid having about 5 to 36 carbon atoms and an alcohol having about 5 to 36 carbon atoms, with the number of moles of alkylene oxide per mole of acid or alcohol ranging from 2 to 20. The stabilized article has utility in high performance applications.

Abstract: This invention relates to polyacetal compositions that are stabilized against ultraviolet light and heat degradation due to the inclusion therein of a mixed hindered amine light stabilizer (HALS) system, wherein each HALS of the system contains a hindered amine that is of tertiary functionality.

Abstract: The invention relates to the preparation of halogenated imides derived from hydrazine and halogenated dicarboxylic acid anhydride and which can be used as flameproofing agents for plastics. The condensation of hydrazine and halogenated dicarboxylic acid anhydride is carried out in an aqueous medium, at a temperature ranging from 40.degree. to 225.degree. C., with a molar ratio of anhydride/hydrazine equal to between 0.5 and 3, preferably between 1 and 2.

Abstract: Prepration of N,N'-dimethylperylene-3,4,9,10-tetracarboxylic diimide (DMP) ##STR1## in high-hiding pigment form by reacting perylene-3,4,9,10-tetracarboxylic dianhydride with methylamine. The reaction is carried out at 40.degree. to 200.degree. C. and the excess methylamine is distilled off only after the perylene-3,4,9,10-tetracarboxylic dianhydride used has been fully converted to the methylammonium salts of the corresponding N,N'-dimethyldicarbamoylperylenedicarboxylic acids. The temperature is held at 140.degree. to 200.degree. C. after, or after and during the formation of the DMP. The resultant highly crystalline crude pigment in aqueous suspension which has a mean particle size D.sub.50% (mass distribution) of 0.15 to 0.4 .mu.m and a mean length-to-width ratio q950% (mass distribution of the pigment particles of 10:1 to 3:1, is grounded in aqueous suspension until the mean particle size is 0.1 to 0.2 .mu.m and the mean length-to-width ratio of the pigment particles is less than 5:1.

Abstract: Perylene-3,4,9,10-tetracarboxylic acid diimides of the formula I ##STR1## in which R is a linear or branched alkylene, alkylenecycloalkylene or cycloalkylenealkylene radical which has at least 15 C atoms and which is interrupted by one or two --COO--, --OOC--, --CONH-- and/or --NHCO-- groups, and Z is hydrogen, hydroxyl or a --COOH group.Perylene diimides of this type are excellently suitable for coloring polyolefins. In this regard, they are particularly distinguished by their low tendency to bloom. They are also very suitable for coloring engineering plastics, in which they produce fluorescent colorations having a high fluorescence and excellent fastness to heat, light and weathering.

Abstract: The use of 2,9-dichloroquinacridone having a surface area below 30 m.sup.2 /g as a pigment in engineering plastics and coating wherein said pigment exhibits outstanding heat stability and a unique red color in the resulting pigmented system.

Abstract: An oligomeric aromatic pigment dispersant is the reaction product of a diisocyanate and a diol or diamine. The oligomeric dispersant is comprised of at least 25 weight percent of a compound of the formula: ##STR1## wherein n is an integer of from 3 to 15, AR is a residual aromatic connecting group, DI is a residual organic connecting group, CAP is a capping moiety, and X is a residual connecting group selected from the group consisting of: ##STR2## The oligomeric aromatic dispersant has at least 3 aromatic "heads" and 2 aliphatic or rosin "tails".

Abstract: 5,15-Diaza-5b, 15b-dihydrotetrabenzo[a,g,j,p] perylene-6,16-dione, a process for the preparation thereof and its suitability for use as a pigment for coloring a wide variety of organic materials.

Abstract: This invention relates to polyarylene sulfide molding compounds, preferably polyphenylene sulfide molding compounds, having improved processability and increased UV stability.

Abstract: A primer composition usable for steel sheets and plastic sheets in vehicle bodies consists essentially of a component (A) consisting essentially of at least one resin having a glass transition temperature of not higher than -20.degree. C., preferably not lower than -75.degree. C., and an elongation at break of not less than 400%, preferably not greater than 900%, at 20.degree. C. and a component (B) consisting essentially of at least one crosslinking resin, the weight ratio as solid content of (A) to (B) being 70-99:30-1.