Abstract: A method of tinting an unhydrated contact lens involves the steps of providing an unhydrated contact lens; providing a dyestuff solution; providing a printing block comprising a hydrophilic polymer material containing a dye complexing agent capable of noncovalently bonding the dyestuff; placing the dyestuff solution onto the printing block; contacting the unhydrated contact lens and the printing block for a time sufficient to allow the dyestuff solution to diffuse to the lens; and removing the lens from the printing block.

Abstract: Arylphenyl ether derivatives of the formula ##STR1## wherein Az is 1H-(1,2,4-triazolyl) or is 1-imidazolyl optionally substituted by alkyl,each of R.sub.a and R.sub.b is hydrogen, halogen, alkyl, alkoxy or nitro,Ar is phenyl or naphthyl, optionally substituted by halogen, alkyl, alkoxy, nitro or CF.sub.3,each of U and V, is alkyl optionally substituted by halogen or alkoxy, or together form an alkylene bridge ##STR2## wherein each of R.sub.1 and R.sub.2 is hydrogen, or alkyl optionally substituted by halogen; phenyl optionally substituted by halogen or alkyl; or --CH.sub.2 --Z--R.sub.7 in which Z is oxygen or sulfur, and R.sub.7 is hydrogen, alkyl optionally substituted by alkoxy, alkenyl, prop-2-ynyl, 3-halo-prop-2-ynyl, phenyl optionally substituted by halogen, alkyl, alkoxy, nitro or by CF.sub.3, benzyl optionally substituted by halogen, alkyl or by alkoxy,each of R.sub.3, R.sub.4 and R.sub.5 is hydrogen or alkyl, the total number of carbon atoms in R.sub.3, R.sub.4 and R.sub.5 not exceeding 6, andR.sub.

Abstract: The present invention relates to novel polymers, to processes for the preparation thereof, to contact lenses consisting substantially of those polymers and to processes for the manufacture thereof and to the use of the novel polymers for the manufacture of contact lenses. The polymers according to the invention are especially the copolymerisation products of monomer mixtures comprising the following monomers:______________________________________ a) 20-60% siloxane monovinyl component b) 1-25% siloxane oligovinyl component c) 10-55% fluorine-containing vinyl component d) 3-30% hydrophobic vinyl component having a bulky hydrocarbon radical, e) 0-10% hydrophilic vinyl component f) 0-15% additional cross-linking vinyl component. ______________________________________The novel polymers and the contact lenses made therefrom are distinguished by a high degree of hardness while at the same time being highly permeable to oxygen.

Abstract: A process for purifying water, which comprises passing water contaminated with halogenated compounds through one or more fixed or fluidized bed reactors which are connected in series and packed with an adsorbent material which is inoculated with one or more microorganisms. The process results in almost complete elimination of the halogenated hydrocarbons.

Abstract: Aqueous solutions of synthetic tanning agents comprising(A) a lithium salt of a synthetic, anionic aromatic tanning agent or the anionic non-condensed precursor thereof, and, as optional components,(B) a water-soluble chromium, aluminum, iron or zirconium salt or a mixture thereof, and(C) an alkali metal salt of ethylenediaminetetraacetic acid or of a pyrophosphateare prepared by mixing an aqueous solution of component (A) and optional component (C) with component (B), which may also be in the form of an aqueous solution, and are used as tanning agents for tanning bides or for retanning leather of all kinds. The lithium salts used as component (A) are novel and can be used as stain blockers for polyamide fibres or for enhancing the wetfastness properties of dyeings on polyamide fibres.

Abstract: Pyrimidinyl- and triazinyl-salicylamides of the formula I ##STR1## in which the meanings of the radicals are described in claim 1, and the salts of compounds of the formula I which have a free hydroxycarbonyl group have a herbicidal and plant-growth regulating action. They are suitable as active substances in weed killers and in compositions for positively influencing the growth of crop plants.

Abstract: Compositions comprising, as active ingredients, compounds of the formula I ##STR1## in which: X.sub.1, X.sub.2 and X.sub.3 independently of one another are hydrogen, methyl, methoxy, methylthio, halogen or nitro;A is C.sub.1 -C.sub.2 alkyl which is substituted by a maximum of 3 X--C.sub.1 -C.sub.4 alkyl groups, methyl which is substituted by 2 or 3 halogen atoms, ethyl which is substituted by hydroxyl and/or not more than 4 halogen atoms; vinyl which is unsubstituted or substituted by not more than 3 halogen atoms; furthermore ethynyl, propargyl, formyl, acetyl, acetyl which is substituted by not more than 3 halogen atoms, or one of the groups C(R).dbd.N--N(R.sub.2)R.sub.3, C(N.dbd.N--U.sub.1).dbd.N--NH--U.sub.1, CH(R)--[N(R.sub.1)].sub.n --N(R.sub.2)R.sub.3, C(R)(CN)OR.sub.4, C(R).dbd.N(O).sub.n R.sub.3, CH(R)--O--N.dbd.C(R.sub.1)R.sub.2, CH(R)--O--N.dbd.C(CN)--CONH--R.sub.5, C(R.sub.6).dbd.N--(O).sub.n R, CH(R)--Y--E--R.sub.3, CO--[C(OR).sub.2 ].sub.n Q, C(Q).dbd.

Abstract: A method of imparting antimicrobial activity to an ophthalmic composition includes the step of adding a polyquaternary ammonium salt to the composition. The method may be employed, for example, for disinfecting a contact lens or preserving a solution, ointment or suspension.

Abstract: A composition for the treatment of leather and furs, containing (A) an anionic aromatic syntan and (B) a polymer and/or copolymer of an unsaturated C.sub.3 -C.sub.5 mono- or dicarboxylic acid and/or hydroxy compounds thereof, a process for the production of wet-white leather and furs and the use of the composition for the said production are described.

Abstract: A process is described for the production of the known intermediate cyclopropylmethylketone which delivers a high yield, few side products, high reaction efficiency and turnover, and is more viable practically and commercially. In the presence of an excess of a Periodic Table Group I or Group II metal halide or quaternary phosphonium halide, .alpha.-acetyl-.gamma.-butyrolactone is led continuously into a reaction vessel at 170.degree.-200.degree. C. and cyclopropylmethylketone distilled off continuously. The halide is recovered and recycled in the process.

Abstract: A contact lens casting mould includes two casting mould halves. A concave shaping surface (11) is constructed on a female part (1) and a convex shaping surface (21) on a male part (2). When joined together, the two casting mould halves (1 and 2) adhere by frictional connection.

Abstract: Compounds of formula I ##STR1## wherein R.sub.1 denotes identical or different radicals and is linear or branched C.sub.1 -C.sub.12 alkyl, unsubstituted C.sub.5 -C.sub.6 cycloalkyl or C.sub.5 -C.sub.6 cycloalkyl which is substituted by C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, or is phenyl or benzyl, or both substituents R.sub.1 of a group (R.sub.1).sub.2 P are o,o'-diphenylene, R.sub.2 is hydrogen, linear or branched C.sub.1 -C.sub.12 alkyl, phenyl or benzyl, R.sub.3 is C.sub.1 -C.sub.12 alkylene, R.sub.4 is C.sub.2 -C.sub.18 alkylene, phenylene or benzylene, and R.sub.5 is C.sub.1 -C.sub.6 alkyl or phenyl, can be applied to solid carriers, such as silica gel or aerosils, and complexed with rhodium or iridium compounds. These materials are heterogeneous and separable catalysts for the asymmetrical hydrogenation of prochiral compounds containing carbon double bonds or carbon/hetero atom double bonds, for example ketones and imines.

Abstract: The combination of the plant microbicide 4-(2,2-difluoro-1,3-benzodioxol-7-yl)-1H-pyrrole-3-carbonitrile with the plant microbicide 1-{2-[2-chloro-4-(4-chlorophenoxy)phenyl]-4-methyl-1,3-dioxolan-2-ylmethyl }-1H-1,2,4-triazole results in a synergistically increased effect in the control of plant diseases. Microbicidal compositions based on such combinations are suitable for treating crops of plants and natural products of vegetable and animal origin, and for seed treatment.

Abstract: The combination of the plant microbicide 1-[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-ylmethyl]-1H-1,2,4-triaz ole (=propiconazole) with the plant microbicide 1-{2-[2-chloro-4-(4-chlorophenoxy)-phenyl]-4-methyl-1,3-dioxolan-2-ylmethy l}-1H-1,2,4-triazole results in an increased activity in the control of plant diseases. Plant microbicidal compositions based on such combinations are suitable especially for controlling diseases in cereals.

Abstract: The combination of the plant microbicide 4-(2,2-difluoro-1,3-benzodioxol-7-yl)-1H-pyrrole-3-carbonitril with the plant microbicide .alpha.-[2-(4-chlorophenyl)ethyl]-.alpha.-(1,1-dimethyl-ethyl)-.beta.-(1H- 1,2,4-triazolyl)-1-ethanol results in a synergistically enhanced effect in the control of plant diseases. Microbicidal compositions based on such combinations are suitable for treating natural products of vegetable and animal origin and, in particular, for seed treatment.

Abstract: Compounds of the formula ##STR1## in which A.sub.1 and A.sub.2 independently of one another are CO--C.sub.1 -C.sub.4 alkyl, COO--C.sub.1 -C.sub.4 alkyl, CO--CF.sub.3, CO--N(R).sub.2 or cyano;A.sub.1 and A.sub.2 together are CO(X).sub.n --C.sub.1 -C.sub.3 alkylene-(X).sub.n CO, CO(X).sub.n --C.sub.1 -C.sub.3 alkylene-(X).sub.n CO which is substituted by C.sub.1 -C.sub.4 alkyl, COOR, CON(R).sub.2, cyano or phenyl, it being possible for the phenyl ring, in turn, to be substituted by halogen, methyl, trifluoromethyl, methoxy, nitro or cyano; CO--N(R)--CO--N(R)--CO;R is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 alkenyl or C.sub.3 -C.sub.6 alkynyl;X is oxygen, sulfur or N(CH.sub.3);X.sub.1, X.sub.2 and X.sub.3 independently of one another are hydrogen, halogen, methyl, methylthio, methoxy or nitro;n is 0 or 1;including the salts of the compounds of the formula I with agriculturally acceptable organic or inorganic bases, and including the metal complexes; have valuable microbicidal properties.

Abstract: Compounds of formula II ##STR1## wherein the groups (R.sub.1).sub.2 P(CH.sub.2).sub.m and n are in o- or m-position to each other and the substituents R.sub.1 are identical or different radicals, m and n are each independently of the other 0 or 1, R.sub.1 is linear or branched C.sub.1 -C.sub.12 alkyl, unsubstituted C.sub.5 -C.sub.6 cycloalkyl or C.sub.5 -C.sub.6 cycloalkyl which is substituted by C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, or is phenyl or benzyl, or both substituents R.sub.1 in a group (R.sub.1).sub.2 P together are o,o'-diphenylene, --R.sub.2 --X-- is a bond or --(C.sub.x H.sub.2x --O).sub.y --, or X-- is O-- and R.sub.2 is C.sub.1 -C.sub.6 alkylene, x is an integer from 2 to 6 and y is an integer from 2 to 6, R.sub.3 is C.sub.2 -C.sub.18 alkylene, phenylene or benzylene, and R.sub.4 is C.sub.1 -C.sub.6 alkyl or phenyl, can be applied to solid carriers, such as silica gel or aerosils, and complexed with rhodium or iridium compounds.

Abstract: A process for the preparation of 1,3-disubstituted 2-nitroguanidines of the formula I ##STR1## in which R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl or a radical --CH.sub.2 B; A is an unsubstituted or mono- to tetrasubstituted aromatic or non-aromatic, monocyclic or bicyclic heterocyclic radical, which may contain one or two substituents from the group comprising C.sub.1 -C.sub.3 haloalkyl having 1 to 7 halogen atoms, cyclopropyl, halocyclopropyl having 1 to 3 halogen atoms, C.sub.2 -C.sub.3 alkenyl, C.sub.2 -C.sub.3 alkynyl, C.sub.2 -C.sub.3 haloalkenyl and C.sub.2 -C.sub.3 haloalkynyl having 1 to 4 halogen atoms, C.sub.1 -C.sub.3 haloalkoxy having 1 to 7 halogen atoms, C.sub.1 -C.sub.3 alkylthio, C.sub.1 -C.sub.3 haloalkylthio having 1 to 7 halogen atoms, allyloxy, propargyloxy, allylthio, propargylthio, haloallyloxy, haloallylthio, cyano and nitro and one to four substituents from the group comprising C.sub.1 -C.sub.3 alkyl, C.sub.

Abstract: Reactive dyes of the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3, independently of one another, are C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, ureido, C.sub.1 -C.sub.4 acylamino, carboxyl and sulfo and n, m and p, independently of one another, are the number 0, 1, 2 or 3, X is fluorine or chorine and Z is an aliphatic, araliphatic, aromatic or heterocyclic amino group free from fibre-reactive radicals; or Z is the radical of an aliphatic or aromatic diamine which contains the radical of the formula ##STR2## in which R.sub.1, R.sub.2, R.sub.3, n, m, p and X are as defined, bound via the second amino group; or Z is a radical of the formula ##STR3## in which R.sub.1, R.sub.2, R.sub.3, n, m, and p are as defined; or Z is a radical --NH--SO.sub.2 --(CH.sub.2).sub.2 --OSO.sub.3 H; and the reactive dye of the formula (1) contains at least two sulfo groups, produce, on cellulose fibres, orange dyeings of high color strength and prints of good fastness properties.

Abstract: The novel azo dyes of formula I as indicated in claim 1 are suitable for dyeing and printing, especially paper of all kinds.