The present invention relates to azo dyes of formula (1), wherein D is a radical of formula (2) or (3), R.sub.1 and R.sub.2 independently denote hydrogen; C.sub.6-C.sub.10 aryl which is unsubstituted or substituted by cyano, carboxy, hydroxy, halogen, C.sub.1-C.sub.6alkyl, or C.sub.1-C.sub.6alkoxy; C.sub.1-C.sub.12alkyl which may be interrupted one or more times by O, S, NR.sub.4, CO, COO or OOC, and is unsubstituted or substituted by cyano, carboxy, hydroxy, C.sub.6-C.sub.10 aryl, or C.sub.6-C.sub.10 aryloxy, which C.sub.6-C.sub.10 aryl or C.sub.6-C.sub.10 aryloxy is unsubstituted or substituted by cyano, carboxy, hydroxy, halogen, C.sub.1-C.sub.6alkyl, or C.sub.1-C.sub.6alkoxy; R.sub.3 and R.sub.4 are each independently of the other hydrogen, halogen, nitro, cyano, trifluoromethyl, carboxy, C.sub.1-C.sub.6alkyl, C.sub.1-C.sub.6alkoxy, C.sub.1-C.sub.6alkylcarbonyl, C.sub.6-C.sub.10 arylcarbonyl, C.sub.1-C.sub.6alkoxycarbonyl, C.sub.1-C.sub.6alkylsulfonyl, C.sub.1-C.sub.6alkylsulfonylamino or C.sub.1-C.sub.4 alkanoylamino; and R.sub.5 is halogen, nitro, cyano, trifluoromethyl, carboxy, C.sub.1-C.sub.6alkyl, C.sub.1-C.sub.6alkoxy, C.sub.1-C.sub.6alkylcarbonyl, C.sub.6-C.sub.10 arylcarbonyl, C.sub.1-C.sub.6alkoxycarbonyl, C.sub.1-C.sub.6alkylsulfonyl, C.sub.1-C.sub.6alkylsulfonylamino or C.sub.1-C.sub.4 alkanoylamino; and R.sub.6, R.sub.7, R.sub.8 and R.sub.9 independently of each other are hydrogen, hydroxy, halogen, cyano, nitro or C.sub.1-C.sub.4 alkanoylamino, and the radicals X independently denote N or CH, with the proviso that at least one radical X denotes CH, which are distinguished by their good lightfastness properties. ##STR00001##

The present invention relates to azo dyes of formula (1), wherein D is a radical of formula (2) or (3), R.sub.1 and R.sub.2 independently denote hydrogen; C.sub.6-C.sub.10 aryl which is unsubstituted or substituted by cyano, carboxy, hydroxy, halogen, C.sub.1-C.sub.6alkyl, or C.sub.1-C.sub.6alkoxy; C.sub.1-C.sub.12alkyl which may be interrupted one or more times by O, S, NR.sub.4, CO, COO or OOC, and is unsubstituted or substituted by cyano, carboxy, hydroxy, C.sub.6-C.sub.10 aryl, or C.sub.6-C.sub.10 aryloxy, which C.sub.6-C.sub.10 aryl or C.sub.6-C.sub.10 aryloxy is unsubstituted or substituted by cyano, carboxy, hydroxy, halogen, C.sub.1-C.sub.6alkyl, or C.sub.1-C.sub.6alkoxy; R.sub.3 and R.sub.4 are each independently of the other hydrogen, halogen, nitro, cyano, trifluoromethyl, carboxy, C.sub.1-C.sub.6alkyl, C.sub.1-C.sub.6alkoxy, C.sub.1-C.sub.6alkylcarbonyl, C.sub.6-C.sub.10 arylcarbonyl, C.sub.1-C.sub.6alkoxycarbonyl, C.sub.1-C.sub.6alkylsulfonyl, C.sub.1-C.sub.6alkylsulfonylamino or C.sub.1-C.sub.4 alkanoylamino; and R.sub.5 is halogen, nitro, cyano, trifluoromethyl, carboxy, C.sub.1-C.sub.6alkyl, C.sub.1-C.sub.6alkoxy, C.sub.1-C.sub.6alkylcarbonyl, C.sub.6-C.sub.10 arylcarbonyl, C.sub.1-C.sub.6alkoxycarbonyl, C.sub.1-C.sub.6alkylsulfonyl, C.sub.1-C.sub.6alkylsulfonylamino or C.sub.1-C.sub.4 alkanoylamino; and R.sub.6, R.sub.7, R.sub.8 and R.sub.9 independently of each other are hydrogen, hydroxy, halogen, cyano, nitro or C.sub.1-C.sub.4 alkanoylamino, and the radicals X independently denote N or CH, with the proviso that at least one radical X denotes CH, which are distinguished by their good lightfastness properties. ##STR00001##

The present invention is directed to dye mixtures comprising structures of formula and their production and their use for dyeing textiles and in particular for dyeing aramid fibres.

##STR00001##

A textile material comprises a plurality of yarns, the yarns containing an intimate blend of dyed polyphenylene sulfide fibers and aramid fibers. The dyed polyphenylene sulfide fibers comprising a disperse dye that is distributed substantially evenly across the cross-sectional area of the fibers. A method for dyeing textile materials containing polyphenylene sulfide fibers comprises the steps of (a) providing a plurality of polyphenylene sulfide fibers and aramid fibers; (b) spinning the blend of fibers into a plurality of yarns; (c) forming the yarns into a textile material; (d) subjecting the textile material to a polyphenylene sulfide dyeing process.

An automobile instrument panel surface material includes a microfiber having an average single fiber diameter of 0.3 to 7 m; and polyurethane, the automobile instrument panel surface material having nap formed of the microfiber, the automobile instrument panel surface material having, of light fastnesses measured according to a light fastness measurement method of JIS L 0843:2006 under conditions of a xenon arc intensity of 110 MJ/m2, a fading by gray scale evaluation of grade 3.5 or higher, the automobile instrument panel surface material having a glass haze of 10.0% or less as measured according to a glass haze evaluation method of ISO 6452:2007 under conditions of a heating temperature of 100 C. and a heating time of 20 hours.

An embodiment of the present disclosure relates to a method for producing an optical component resin having excellent dyeability, an optical component resin, a spectacle lens, and spectacles. A method for producing an optical component resin, including a step of polymerizing a polymerizable composition containing a polyisocyanate component and a polythiol component containing 40 mol % or more of a polythiol compound having two or more sulfide bonds in a molecular structure thereof, in which the content of a hydrolyzable chlorine compound contained in the polyisocyanate component is in a range of 10 ppm by mass or more and 100 ppm by mass or less in the polyisocyanate component, an optical component resin obtained by the producing method, an optical component formed of the optical component resin, a spectacle lens including a lens substrate formed of the optical component resin, and spectacles including the spectacle lens.

Dyed articles, such as sutures, and methods for making the same by treating with a supercritical liquid are disclosed. The articles may be made at least partially, if not entirely, from ultra-high molecular weight polyethylene (UHMWPE). The dye may be D&C Violet #2.

A fabric treatment agent that is used in textile printing with a sublimable color material includes a color-material scavenging compound having an Rf value of 0.7 or less according to paper chromatography performed under following conditions. In Procedure 1, cellulose filter paper is impregnated with a 10% solution of the color-material scavenging compound and then dried to prepare a carrier. In Procedure 2, a 0.1% solution of a sublimable color material in tetrahydrofuran is spotted on the carrier and then dried to prepare a development sample. In Procedure 3, the development sample is developed using acetonitrile as a solvent for 3 minutes at 25 C. In Procedure 4, the Rf value is calculated by a following formula: $Rf=\frac{\left(\mathrm{distance}\mathrm{travelled}\mathrm{by}\mathrm{the}\mathrm{sublimable}\mathrm{color}\mathrm{material}\right)}{\left(\mathrm{distance}\mathrm{travelled}\mathrm{by}\mathrm{acetonitrile}\right)}.$

A fabric treatment agent that is used in textile printing with a sublimable color material includes a color-material scavenging compound having an Rf value of 0.7 or less according to paper chromatography performed under following conditions. In Procedure 1, cellulose filter paper is impregnated with a 10% solution of the color-material scavenging compound and then dried to prepare a carrier. In Procedure 2, a 0.1% solution of a sublimable color material in tetrahydrofuran is spotted on the carrier and then dried to prepare a development sample. In Procedure 3, the development sample is developed using acetonitrile as a solvent for 3 minutes at 25 C. In Procedure 4, the Rf value is calculated by a following formula: $Rf=\frac{\left(\mathrm{distance}\mathrm{travelled}\mathrm{by}\mathrm{the}\mathrm{sublimable}\mathrm{color}\mathrm{material}\right)}{\left(\mathrm{distance}\mathrm{travelled}\mathrm{by}\mathrm{acetonitrile}\right)}.$

Methods for dyeing of microporous track etched membranes are provided. In particular, these methods are suitable for dark shade dyeing of membranes having large pores with low porosity. Desirably, such methods provide dyed membranes wherein the membrane parameters are not significantly changed as compared to those prior to dyeing. Likewise, the resultant dyed membranes exhibit no negative influence on sensitive cell culture system applications.