Showing papers on "Benzotriazole published in 1984"

Phosphorus-containing metal salts/sulfurized phenate compositions/aromatic substituted triazoles, concentrates, and functional fluids containing same.

Abstract: Composition contenant (A) au moins un sel metallique d'un melange d'acides comportant (A)(I) au moins un acide de formule (I) ou R' et R/2 sont semblables ou differents et chacun des groupes R' et R2 est un groupe a base d'hydrocarbure, et (A)(II) au moins un acide carboxylique aliphatique ou alicyclique contenant de 2 a environ 40 atomes de carbone, (B) au moins un phenate metallique du groupe II sulfure, ainsi que (C) une quantite stabilisatrice d'au moins un triazole choisi dans le groupe forme par le benzotriazole et le benzotriazole alkyle-substitues dont le groupe alkyle contient jusqu'a 15 atomes de carbone. Composition containing (A) at least one metal salt of a mixture of acids comprising (A) (I) at least one acid of formula (I) wherein R 'and R / 2 are the same or different and each of R' and R2 is a hydrocarbon based group, and (A) (II) at least one aliphatic or alicyclic carboxylic acid containing from 2 to about 40 carbon atoms, (B) at least one metal phenate sulfide group II and that (C) a stabilizing amount of at least one triazole selected from the group consisting of benzotriazole and alkyl-substituted benzotriazole wherein the alkyl group contains up to 15 carbon atoms.

Cleaning and stabilization of sulphide-corroded bronzes

Abstract: A study is presented of the growth of sulphidecontaining corrosion products on antiquities in museums Analysis of the corrosion products suggests that they are dependent on the mode of formation Techniques for conservation have also been investigated and l-amido-l-cyanoethylene, 2,2-di(sodium thiolate) is recommended for dissolving the sulphide layers, while a treatment with benzotriazole followed by lacquering is recommended for long-term protection

Benzotriazole Complexes. VI. The Crystal Structures of Catena-mu-dichlorobis(benzotriazole)cadmium(II) and Catena-mu-dichlorobis(benzotriazole)manganese(II).

Abstract: Les deux complexes cristallisent dans le systeme monoclinique, groupe C2/c et leurs structures sont affinees jusqu'a R=0,053 pour le complexe de cadmium et 0,043 pour le complexe de manganese. Coordination octaedrique autour des atomes metalliques

Benzotriazole Complexes. V. The Crystal Structure of Catena-mu-aqua-bis(mu-benzotriazolato)copper(II).

Abstract: Cristallisation dans le systeme monoclinique, groupe I2/c et affinement de la structure jusqu'a R=0,079. Coordination selon une bipyramide tetraedrique deformee autour des atomes Cu

Functional polymers: 29. Polymerizable acrylic ultraviolet absorbers with two benzotriazole groups in the molecules

Abstract: Preparation d'acrylates et methacrylates de dihydroxy-2,4 phenyl-1,3 di(2H-benzotriazole, et trihydroxy-2,4,6 phenyl-1,3 di(2H-benzotriazole par reaction des acides correspondants avec le carbodiimide de N,N'-dicyclohexyle puis reaction avec un absorbant UV phenolique

Electrolysis of N-Heterocyclic Compounds (Part II)

Abstract: Publisher Summary The chapter discusses the electrolytic reactions, in which a heterocyclic system is formed. The reactions will be treated under the following: ring formation reactions, ring contractions, and ring expansions. In the electrolytic formation of heterocyclic systems the role of the current is to bring one or both of the reaction centers to a suitable oxidation state. These reactions may be classified in different ways; they are treated according to the type of bond formed. Ring contractions may occur during reductions or oxidations. A kind of reductive ring expansion is reported, in which benzotriazole is converted to a dihydrobenzo-l,2,4-triazine. The reaction involves the known ring opening of benzotriazole to 2-aminophenylhydrazine by reduction in hydrochloric acid, followed by a condensation with a suitable orthoester; the yields are good and it is probably the most convenient way to prepare derivatives of benzo-1,2,4-triazine. The electrode reactions of heterocyclic compounds, in which a reduction or oxidation of the nucleus takes place, are discussed in the chapter. Ring systems carrying substituents are included if the substituent is not reduced or oxidized, and the redox reactions of the ring are not changed in type by the substituent. Alkyl derivatives of heterocyclic compounds may be oxidized to carboxylic acids, for example, methylpyridines and methylpyridine N-oxides by superoxide ions, generated electrochemically in DMF. Heterocyclic hydroxyl derivatives can be divided into two groups according to whether or not the hydroxyl group is exocyclic.

Method of producing light-fast polyvinyl butyral films

Abstract: 1. Use of a) derivatives of benzotriazole, b) derivatives of acrylonitrile or of cinnamonitrile or c) hydroxybenzophenones as stabilisers with pronounced long-term effect against yellowing under the influence of daylight in foils of phenolically stabilised, plasticised, partially acetalised polyvinyl alcohols with contents of phosphoric acid triesters or phosphonic acid diesters.

Production of polyurethane resin

Abstract: PURPOSE: To obtain the titled resin excellent in resistance to light, weather, heat, water and oxidation and retention of whiteness, by reacting an isocyanate compound with an active hydrogen-containing compound in the presence of a specified stabilizer for polyurethane. CONSTITUTION: A stabilizer for polyurethane is obtained by mixing 0.05W5wt%, based on polyurethane, ultraviolet absorber [e.g., 2-(2'-hydroxy-5'-methylphenyl) benzotriazole] with an antioxidant comprising a hindered phenol compound having at least one branched lower aliphatic hydrocarbon group in a position ortho to the OH (e.g., a compound of formula I) and 0.05W5wt% phosphite of a P content of 6.0W8.0wt%, of formula II [wherein R 1W3 are each (cyclo)alkyl, (alkyl)aryl or aralkyl]. A polyisocyanate compound component such as toluene diisocyanate is reacted with an active hydrogen-containing compound (e.g., ethylene glycol) in the presence of said stabilizer and, optionally, a reaction catalyst. COPYRIGHT: (C)1986,JPO&Japio

Method for processing photographic silver dye bleach materials

Abstract: The processing time of exposed photographic silver dye bleach materials is shortened by using a bleach preparation which contains a strong acid, a water-soluble iodide, a water-soluble organic nitro compound, an anti-oxidizing agent, a bleach catalyst, an organic photographic developing agent and/or a benzotriazole derivate.

Accelerators for the cure of epoxy resins

Abstract: A compound containing an epoxy group, is reacted with a carboxyl compound by heating a mixture of these compounds in the presence of a benzotriazole such as unsubstituted benzotriazole or tolyltriazole as accelerator. The accelerator is particularly effective in the reaction of a carboxyl compound which is a polyester containing free carbox- yiic acid groups with an epoxy compound which is triglycidyl cyanurate or an epoxy resin based on bisphenol A.

Sensitization potential of benzotriazole

Abstract: Predictive guinea pig sensitization studies have been performed with commercial and purified 1H-benzotriazole. In only 3 animals, induced and challenged according to the maximization protocol with more than 100 times the normal use concentration, were slight erythemas elicited with the commercial grade of benzotriazole. The optimization test with commercial and purified materials, as well as the test with the purified material, was negative. We conclude that benzotriazole has a very low sensitization potential.

Investigation of Lubricity of Sulfurized Olefin and Dodecyl Amine Salt of Benzotriazole

Abstract: Timken and Four-ball Machine tests were used to study the effects of the dodecyl amine salt of benzotriazole (ASBT) on the lubricity of liquid paraffin containing sulfurized olefin (SO). The wear rate and friction coefficient decreased in the presence of ASBT. The tribochemical reactions of both ASBT and SO were studied with the aid of modern physical techniques, such as AES, ESCA, IR spectroscopy and scanning electron microscopy. Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference in Hartford, Connecticut, October 18–20, 1983

Method of stabilizing solvent

Abstract: PURPOSE:A solvent capable of suppressing change of color and corrosion of copper, aluminum and steel, and casuing no change of quality under the metal materials, by adding benzotriazole as a stabilizer to a 1,2-dichlorofluoroethane solvent. CONSTITUTION:A 1,2-dichlorofluoroethane solvent, namely a mixed solvent of 1,2-diclorofluoroethane and 1,2-dichlorofluoroethane as main components, is blended with about 5-1,000wt. ppm based on the solvent of benzotriazole, so that the solvent is stabilized. The solvent may be blended with another stabilizer such as nitromethane, etc. USE:Useful for defatting and washing semiconductor materials such as silicone wafer, silicone ship, etc., semiconductors such as IC, SI, etc., electronic and electrical devices such as printed circuit board, etc., and precision instruments.

Rust-proofing material

Abstract: PURPOSE: To obtain a rust-proofing material capable of keeping the rust-proofing activity for a long period, and also having the function of a packaging material, by mixing a cyclodextrin-clathrate compound of a vapor phase inhibitor with a thermoplastic synthetic resin, and forming the mixture to a proper form. CONSTITUTION: A vapor phase inhibitor (selected from dicyclohyxylammonium nitrite, benzotriazole, etc. according to the material to be treated) is added to the (super)saturated aqueous solution of cyclodextrin (α,β,γ-cyclodextrin, its derivative, or decomposed starch containing cyclodextrin), and stirred at ≤70°C for several tens min W several hr. The obtained paste or powder containing a clathrate compound is added to a thermoplastic synthetic resin (preferably polyethylene, polypropylene, soft polyvinyl chloride, or ethylene/vinyl acetate copolymer), and the mixture is formed in the form of a film of 30W50μ thick, a form suitable for the holding of the material to be treated and having a dimension of 1W2mm, or a foamed article. COPYRIGHT: (C)1985,JPO&Japio

Method for stabilizing aliphatic higher aldehyde compounds

Abstract: Aliphatic higher aldehyde compounds, e.g. Z-11-hexadecenal and Z-9-tetradecenal, can be stabilized against oxidation to form a carboxylic acid and trimer formation by the addition of a stabilizer compound including a tertiary amine compound, benzophenone compound, salicylate compound, benzotriazole compound and cyanoacrylate compound together with or without further admixture of an antioxidant.

Functional polymers. 34: Benzotriazole-substituted undecenoates

Abstract: Selected 10-undecenoic acid esters were prepared from 10-undecenoic acid and four phenolic ultraviolet stabilizers: (1) 2(2-hydroxy-4-undecenoxyphenyl) 2H-benzotriazole, (2) 2(2,6-dihydroxy-4-undecenoxyphenyl)2H-benzotriazole, (3) 2(2-hydroxy-4-undecenoxyphenyl)1,3-2H-dibenzotriazole, and (4) 2(2,6-dihydroxy-4-undecenoxyphenyl)1,3-2H-dibenzotriazole. The esterification was carried out by allowing 10-undecenoic acid to react with N,N′-carbonyldiimide followed by the addition of the phenol. The polymerizable ultraviolet absorbers were characterized.

Method for processing silver halide photosensitive material

Abstract: PURPOSE:To pevent fog effectively without impairing the intrinsic sensitivity of a silver halide photosensitive material by developing it in the presence of a specified benzotriazole compd. CONSTITUTION:The photosensitive material is developed in the presence of a kind of benzotriazole, e.g. having formula II, represented by general formula I in which R1-R4 are each H, halogen, alkyl, alkoxy, acylamide contg. >=3C in the substd. group, or sulfonamide contg. >=2C in that, and one of R1-R4 is said acyl amide or sulfonamide. Said compd. is added into a developing soln. and/or its preceding bath in about 10 -10 mol per liter, and it may be added in 10 -10 mol per liter of silver halide in the silver halide emulsion layer of a photosensitive material.

Ultraviolet screening agricultural vinyl film

Abstract: PURPOSE:The manufacture a thin, flexible vinyl chloride resin film capable of essentially completely screening ultraviolet ray having a wavelength shorter than a specific level, by compounding a vinyl chloride resin with three kinds of benzotriazole ultraviolet absorbers and a plasticizer. CONSTITUTION:A film having a thickness of =0.3pts.wt., and the sum of the three components is 0.9-1.5pts.wt. per 100pts.wt. of the sum of the vinyl chloride resin and the plasticizer.

Recording medium and production thereof

Abstract: PURPOSE:To obtain a recording medium highly sensitive to light in a near- infrared region and non-toxic, by constituting a recording layer of an organic film consisting of a phthalocyanine compound containing a Group IV metal and a specified shifting agent, in a recording medium for semiconductor laser recording. CONSTITUTION:An organic film of a phthalocyanine compound containing Ti, Sn and/or Pb as Group IV metal is formed on a base consisting of a plastic, glass or a metal by a vacuum deposition method or a spin coating method. Then one or more shifting agents selected from the group consisting of a quinoline derivative (formula 1), an indole derivative (formula 2), a benzotriazole derivative (formula 3), a bipyridine derivative (formula 4) and a phenanthroline derivative (formula 5) are brought into contact with the organic film by a method wherein the film is immersed in a solution of the shifting agents in a solvent or the solution is sprayed onto the film, thereby producing the recording layer. A metallic reflecting layer may be preliminarily provided on the base.

Method of quenching metals

Abstract: A metal quenchant fluid which is a mixture of water and a polyalkylene glycol and a inhibitor is substantially nitrite free. The inhibitor is a soluble product obtained by mixing a carboxylic acid having 4 to 12 carbon atoms in the molecule, an amine such as an alkanolamine boiling above 150° C. at atmospheric pressure and a copper chelating agent such as NN diethanol methylene benzotriazole.

Copolymeric benzotriazole compound and use

Abstract: Compounds of the formula I (I) wherein R1 is hydrogen, chlorine, lower alkyl or lower alkoxy, R2 is hydrogen or alkyl, R3 is lower alkenoyl, X and Y are independently -O- or -NH-, m is 0, 1 or 2 and n is 0 or 1, are suitable as copolymerizable UV stabilizers for polymers obtainable from ethylenically unsaturated monomers. The compounds of the formula I are readily obtainable, and are particularly valuable as UV absorbers by virtue of their good solubility in copolymerizable monomers.

Surface treatment of ag-coated cu material

Abstract: PURPOSE:To provide stable and lasting electric connectibility to a surface of Cu or Cu alloy material coated with Ag or an Ag alloy by dissolving a mercapto compound and benzotriazole or a deriv. thereof in a solvent and sticking the resulting soln. to the surface of the material. CONSTITUTION:The mercapto compound (M) and benzotriazole or the deriv. thereof (BTA) are dissolved in a solvent. The amount of M is 0.01-5%, that of BTA is 0.01-10%, and the concn. ratio of M/BTA is 0.02-50. Toluene or other aromatic solvent is used optionally as the mixed solvent. The resulting soln. is stuck to the surface of a Cu or Cu alloy material coated with Ag or an Ag alloy.

Benzotriazole derivatives and their use

Abstract: Benzotriazole compounds of the formula in which R and R denote alkyl, phenalkyl or optionally substituted phenyl, R denotes H, alkyl, alkoxyl or halogen and R and R denote halogen, alkyl, allyl, benzyl or alkoxy or - if R and R are ortho to one another - jointly denote -O-(CH2)m-O- or -(CH2)n-, in which m is 1, 2 or 3 and n is 3, 4 or 5 and where R /R and/or R /R can be identical or different. The triazoles I are very highly suitable as compounds which transport charge carriers in electrophotographic recording materials.

Production of copper or copper alloy powder having resistance to discoloration

Abstract: PURPOSE:To produce copper or copper alloy powder having high resistance to discoloration by coating mixedly powder benzotriazole or its deriv. on the surface of the copper or the copper alloy powder then heating the same to an adequate temp. CONSTITUTION:Copper or copper alloy powder and benzotriazole or a deriv. of benzotriazole such as tolyltriazole or the like are mixed in the state of powder by a mixer, ball mill, etc. to coat triazole, etc. on the surface of the metallic powder and thereafter the powder is heated to 20-80 deg.C and the copper or copper alloy powder which does not discolor when used for a paint, etc. is obtd. The benzotriazole or its deriv. added to said metallic powder is effective if it is added at about 0.01wt% or above but the effect is virtually the same even if it is added at about >=5%. The excellent resistance to discoloration is obtainable with the treatment for about 500hr at 20 deg.C in a hermetic state, more preferably for about 3hr at >=40 deg.C, but at >=80 deg.C, the fatty acid coating the metallic powder dissolves and such is undesirable.

Nitrogen-containing heterocyclic blocked mercapto development inhibitors

Abstract: This invention relates to nitrogen containing heterocyclic compounds represented by the general formula ##STR1## wherein Z is non-metallic atoms necessary to form a tetrazole, a benzotriazole or a benzothiazole, either substituted or unsubstituted, n is either 1 or 2 and R is alkyl or phenyl. The above mentioned compounds can be suitably used in a photographic material as a development inhibitor precursor.

Inhibitor for metal corrosion

Abstract: PURPOSE:An inhibitor for metal corrosion, useful for a heat-resistant lubricating oil, comprising a benzotriazole or a 2,5-dialkyldithio.thiadiazole and a specific organotin compound as active ingredients. CONSTITUTION:The desired inhibitor for metal corrosion comprising (A) a benzotriazole and/or 3-18C 2,5-dialkyldithio.thiadiazole, and (B) organotin compound(e.g., di-butyltin-di-laurate, etc.) shown by the formula(R and R' are 1- 18C alkyl; R'' and R''' are 3-22C carboxyl, maleate, or 3-18C maleate monoester, 1-18C mercapto, 3-18C mercaptoacetic ester, or 1-18C alkoxy) as active ingredients. A blending ratio of the component A to B is preferably 100:(10- 1,000) by weight.