Abstract: Ophthalmic devices are provided having a violet-light vertical cut-off filter abruptly absorbs light between the wave lengths of between approximately and 400 nm and 450 nm such that a curve when plotted as percent transmission versus wavelength has the shape as depicted in FIG. 2. In one embodiment the ophthalmic devices are made from acrylates and the light absorbing compound is an Eastman Yellow 035 MA dye.

Abstract: Ophthalmic devices are provided having a violet-light vertical cut-off filter abruptly absorbs light between the wave lengths of between approximately and 400 nm and 450 nm such that a curve when plotted as percent transmission versus wavelength has the shape as depicted in FIG. 2. In one embodiment the ophthalmic devices are made from acrylates and the light absorbing compound is an Eastman Yellow 035 MA dye.

Abstract: The invention relates to a process of deactivating a polycarbonate, by mixing a polycarbonate having an active alkali metal catalyst residue therein with a deactivator represented of a formula of: wherein, R1-R7 and R9 are, independently, hydrogen; aliphatic hydrocarbon of from 1 to 20 carbon atoms; substituted aromatic hydrocarbon of from 6 to 20 carbon atoms; or unsubstituted aromatic hydrocarbon of from 6 to 20 carbon atoms; R8 and R10-R13 are, independently, substituted or unsubstituted aromatic hydrocarbon of from 6 to 20 carbon atoms; or aliphatic hydrocarbon of from 1 to 20 carbon atoms; A is a tetrafunctional hydrocarbon group; and x is an integer of from 1 to 3, at a temperature and time sufficient to deactivate the alkali metal catalyst to form a deactivated polycarbonate, wherein the deactivated catalyst is not removed from the deactivated polycarbonate. The invention also relates to a polycarbonate having a deactivated metal catalyst.

Abstract: The invention relates to a process of deactivating a polycarbonate, by mixing a polycarbonate containing an active alkali metal catalyst residue with a carboxylic acid, but not removing the deactivated catalyst. The invention further relates to a process of deactivating a polycarbonate, by mixing a solid state polycarbonate containing an active alkali metal catalyst and a carboxylic acid, followed by heating the mixture of step at a temperature to melt the mixture and deactivate the alkali metal catalyst, wherein the deactivated catalyst is not removed. The invention further relates to a process of making a polycarbonate, by polymerizing a polycarbonate in the presence of an alkali metal catalyst to produce an activated polycarbonate, and mixing the activated polycarbonate with a carboxylic acid to deactivate the alkali metal catalyst and form a polycarbonate, wherein the deactivated alkali metal catalyst is not removed from the polycarbonate.

Abstract: The invention relates to a method for preparing a polycarbonate, by mixing (i) 2,2,4,4-tetramethyl-1,3-cyclobutanediol, (ii) dimethyl carbonate, and (iii) a basic catalyst, and heating components (i)-(iii) to produce an intermediate, followed by heating the intermediate at a temperature of less than or equal to 300.degree. C. to produce the polycarbonate. The invention further relates to the polycarbonates produced by the methods of the present invention.

Abstract: The invention relates to the compounds having the structures I and II: ##STR1## The invention also relates to a method of making the compound having the structure I by mixing 2,2,4,4-tetramethyl-1,3-cyclobutanediol; dimethyl carbonate; and a basic catalyst, and heating the mixture.

Abstract: This invention relates to polymer compositions containing naphthalenedicarboxylic acid residues and having reduced fluorescence due to the presence of aromatic thioether compounds. More specifically, the polymer compositions contain poly(ethylene 2,6-naphthalene dicarboxylate) and 0.1 to 5 mole percent of an aromatic thioether compound. The pollers are useful for packaging applications where clarity and/or aesthetic appeal is important.

Abstract: This invention concerns a process for preparing diketones and keto-acids by reacting a dicarboxylic acid and an aromatic compound in the presence of an alkylsulfonic acid such as methanesulfonic acid and a phosphorus pentoxide. The diketones and keto-acids can be used to prepare polyketones which are useful as molding plastics, coatings, films, fibers, and the like.

Abstract: This invention concerns a process for preparing diketones and keto-acids by reacting a dicarboxylic acid and an aromatic compound in the presence of an alkylsulfonic acid such as methanesulfonic acid and an organic anhydride compound such as methanesulfonic anhydride or trifluoroacetic anhydride. The diketones and keto-acids can be used to prepare polyketones which are useful as molding plastics, coatings, films, fibers, and the like.

Abstract: Disclosed is a process for producing dimethyl or novel diphenyl derivatives of stilbenedicarboxylic acids from dimethyl toluates or diphenyl toluates and sulfur. The reaction requires an excess of toluate to sulfur of at least about 5:1. In addition hydrogen sulfide is removed from the reaction zone.

Abstract: Azo dyes having the general formula ##STR1## in which each of X, Y and Z are independently selected from H and a variety of substituents, preferably provided that at least one of X and Y is a substituent selected, for example, from --CN, halogen, alkyl, and alkylsulfonyl, and C is the residue of a phenol, naphthol, indole, imidazothiazole, pyrazolone, thiazole, isothiazole or pyrazole type disperse dye coupling component. These dyes which are unexpectedly non-phototropic produce yellow to orange shades on hydrophobic fibers and exhibit improvements in one or more properties such as dyeability, dye exhaustion rate, light fastness, nonblooming, pH stability, build, fastness to ozone and nitrogen oxide, crock and wash fastness, migration, transfer, and pH stability on polyester, polyamide and other fibers including cellulose ester.

Abstract: Disclosed are novel azo dyes containing an isothiazole azo moiety which may be substituted, and a heterocyclic coupler which also may be substituted. The dyes produce yellow shades on, for example, hydrophobic textile fiber including polyesters, polyamides, and cellulose esters and have excellent fastness properties including lightfastness, washfastness and resistance to sublimation, and dye at unusually low energy levels. The dyes have the general formulae: ##STR1## wherein the various substituents, R.sup.1 and R.sup.2 are each selected from hydrogen and a wide variety of groups such as lower alkyl, --CN, halogen, and the like, R.sup.3 and R.sup.4 are each selected from hydrogen, lower alkyl, benzyl and phenyl, and Z represents the atoms necessary to complete a five or six membered ring.

Abstract: Disclosed are monoazo dyes derived from diazotized 5-amino-4-halo-3-methylisothiazoles and m-acylaminoaniline couplers. These dyes impart scarlet and red shades on nylon and polyester fibers and exhibit good fastness properties. The dyes are represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are each selected from lower alkyl, cycloalkyl, substituted cycloalkyl, or lower alkyl substituted with phenyl, cyano, sulfonamido, carboxamido, alkoxy, hydroxy, or an imide radical; R.sub.3 is lower alkyl, lower alkyl substituted as above, phenyl, or trifluoromethyl; and X is chlorine or bromine.

Abstract: Disclosed are novel azo dyes containing an isothiazole moiety substituted with ether or thioether groups. The dyes produce orange to violet shades on hydrophobic texture fiber including polyesters, polyamides, and cellulose esters and have excellent fastness properties including lightfastness, washfastness and resistance to sublimation. The dyes have the general formula ##STR1## R is lower alkyl or phenyl; X is O or S; R.sub.1 is lower alkyl or substituted lower alkyl, cyclohexyl, phenyl or substituted phenyl; and when X is S, R.sub.1 can be various heterocycles such as pyridyl, pryimidinyl, benzothiazolyl, benzoxazolyl, benzimidazolyl and azolyl radicals;R.sub.2 is hydrogen, lower alkyl, lower alkoxy, or acylamido;R.sub.3 is H, lower alkyl, or lower alkoxy; and R.sub.4 and R.sub.5 are selected from 1 to 2 of H, alkyl of 1-8 carbons, substituted alkyls, cyclohexyl, phenyl or substituted phenyl.

Abstract: Disclosed are novel azo dyes containing an isothiazole azo moiety which may be substituted, and a heterocyclic coupler which also may be substituted. The dyes produce yellow shades on, for example, hydrophobic textile fiber including polyesters, polyamides, and cellulose esters and have excellent fastness properties including lightfastness, washfastness and resistance to sublimation, and dye at unusually low energy levels. The dyes have the general formulae: ##STR1## wherein the various substituents, R.sup.1 and R.sup.2 are each selected from hydrogen and a wide variety of groups such as lower alkyl, --CN, halogen, and the like, R.sup.3 and R.sup.4 are each selected from hydrogen, lower alkyl, benzyl and phenyl, and Z represents the atoms necessary to complete a five or six membered ring.

Abstract: Disclosed are novel azo dyes containing an isothiazole diazo moiety which may be substituted, and a tetrahydroquinoline coupler which also may be substituted. The dyes produce red to violet shades on, for example, hydrophobic textile fiber including polyesters, polyamides, and cellulose esters and have excellent properties including lightfastness, washfastness and resistance to sublimation, and dye at unusually low energy levels. The dyes have the general formula ##STR1## wherein the various substituents, R.sup.1 through R.sup.9, are selected from a wide variety of groups such as alkyl, --CN, halogen, alkoxy, and the like.

Abstract: Disclosed are mono azo dyes derived from diazotized 5-membered heterocyclic amines and certain aniline, 1,2,3,4-tetrahydroquinoline, and benzomorpholine couplers containing sulfoalkyl groups. These dyes impart fast violet to blue shades on polyamide fibers and have the general formulaD--N.dbd.N--Couplerwherein D is a thiadiazol, isothiazol, pyrazol or thiophene type radical, and the Coupler is an aniline, tetrahydroquinoline, or benzomorpholine derivative wherein a --Z--SO.sub.3 M group is attached to the nitrogen thereof, the coupler ring may contain one or more substituents selected from lower alkyl, lower alkoxy, halogen, acylamido, alkylthio or aryloxy, the remaining hydrogen of the aniline coupler may be replaced by a substituent such as lower alkyl, substituted lower alkyl, lower alkenyl, aryl, or cycloalkyl, M is Na.sup.+, K.sup.+, NH.sub.4.sup.+ or H.sup.+, and Z is a linking group such as ethylene.

Abstract: Disclosed are mono azo dyes derived from diazotized 3-amino-2,1-benzisothiazoles and certain aniline, 1,2,3,4-tetrahydroquinoline, and benzomorpholine couplers containing sulfoalkyl groups. These dyes impart fast violet to blue shades on polyamide fibers and have the general formula ##STR1## wherein the Coupler is a derivative of an aniline, tetrahydroquinoline, or benzomorpholine derivative wherein a --Z--SO.sub.3 M group is attached to the nitrogen thereof, R may be hydrogen or one to three substituents such as lower alkyl, lower alkoxy, chlorine, bromine, iodine, sulfamoyl, and substituted sulfamoyl, the coupler ring may contain one or more substituents selected from lower alkyl, lower alkoxy, halogen, acylamido, alkylthio or aryloxy, the remaining hydrogen of the aniline coupler nitrogen may be replaced by a substituent such as lower alkyl, substituted lower alkyl, lower alkenyl, aryl, or cycloalkyl, M is Na.sup.+, K.sup.+, NH.sub.4.sup.+, and Z is a linking group such as ethylene.

Abstract: Monoazo compounds containing a N-substituted-3- or 4-phthalimidyl diazo component and certain m-acylamido-N-substituted aniline residue coupling components produce bright scarlet to red shades on fibers of, for example, polyester, polyamide and cellulose esters, and exhibit improved dyeability properties and good to excellent fastness to light, high pH, sublimation and crocking.