Showing papers on "Benzotriazole published in 1985"
TL;DR: Although benzotriazole and tolyltitriazole are well known as extremely effective inhibitors of copper corrosion, very little has been reported in the literature regarding their chemistry as discussed by the authors.
Abstract: Although benzotriazole and tolyltriazole are well known as extremely effective inhibitors of copper corrosion, very little has been reported in the literature regarding their chemistry, pa...
80 citations
TL;DR: Mono- et dibenzoylation de propanediol-1,2, phenyl-1 ethanediol, butanediol 1,3, ethyl-2 hexanediol1,3 et (Obenzylidene-4,6 methyl-1) glucopyranoside, dans le dichloromethane as mentioned in this paper.
Abstract: Mono- et dibenzoylation de propanediol-1,2, phenyl-1 ethanediol-1,2, butanediol-1,3, ethyl-2 hexanediol-1,3 et (O-benzylidene-4,6 methyl-1) glucopyranoside, dans le dichloromethane
77 citations
TL;DR: In this article, the efficiency of four selected corrosion inhibitors (benzimidazole, 1-hydroxybenzotriazole and 2-mercaptobenzoxazole) for the corrosion inhibition of copper in aqueous chloride media was investigated using electrochemical and surface enhanced Raman spectroscopic techniques.
75 citations
Patent•
20 Nov 1985TL;DR: In this article, 2-(2-hydroxy-3-higher branched alkyl-5-methylphenyl)-2H-benzotriazole mixtures are prepared by alkylation with a straight chain alkene or with a branched chain of 8 to 30 carbon atoms in the presence of an acidic catalyst.
Abstract: Liquid 2-(2-hydroxy-3-higher branched alkyl-5-methylphenyl)-2H-benzotriazole mixtures are prepared by alkylating 2-(2-hydroxy-5-methylphenyl)-2H-benzotriazole with a straight chain alkene or with a branched chain alkene of 8 to 30 carbon atoms in the presence of an acidic catalyst at 100°-200° C. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.
73 citations
Patent•
16 Oct 1985TL;DR: In this paper, the authors describe a class of compounds susceptible to free-radical polymerization, namely 2-(2'-hydroxy-3'-methacrylamidomethyl-5'-tert-octylphenyl)benzotriazole, and polymers thereof.
Abstract: UV absorbing compounds, susceptible to free-radical polymerization, of the formula ##STR1## wherein R is alkyl having from 4 to 12 carbon atoms of which not more than 6 are present in a linear chain, and in particular 2-(2'-hydroxy-3'-methacrylamidomethyl-5'-tert-octylphenyl)benzotriazole, and polymers thereof.
36 citations
29 citations
TL;DR: In this paper, the synergetic inhibition of copper corrosion by benzotriazole (BTA) and benzylamine (BZA) was assessed by voltammetric and ac impedance measurements.
27 citations
TL;DR: In this article, the corrosion of mild steel in alkaline mine water containing various concentrations of benzotriazole, benzimidazole and imidazoles was studied by weight loss and polarization techniques at 303 K.
27 citations
TL;DR: Pyridinium chlorochromate complexed with benzotriazole was found to selectively oxidize steroidal allylic alchols in high yield.
26 citations
TL;DR: Polarization-modulated infrared reflection absorption spectroscopy has been used to measure the infrared spectra of the surface films on copper grown in methanol or aqueous solutions containing benzotriazole.
25 citations
TL;DR: In this paper, 1,1'-diindazolylphenylmethanes have been prepared from indazoles and benzaldehyde in presence of zinc chloride as catalyst, which is strongly dependent on the basic pK a's of azoles and only few pyrazolyl derivatives could be prepared by this procedure.
Patent•
01 Aug 1985
TL;DR: A polyacetal resin composition comprises polyamide, polyamide and an aliphatic acid ester to give improved stability and resistance to weathering as discussed by the authors. But it is not a light stabiliser.
Abstract: A polyacetal resin composition comprises a polyacetal resin, (A) a light stabiliser selected from the group consisting of a benzotriazole compound, a benzophenone compound, an aromatic benzoate compound, a cyanoacrylate compound, and an anilide oxalate compound and (B) an aliphatic acid ester, to give improved stability and resistance to weathering.
TL;DR: In this article, the cyclic-fluorovoltammetry of a copper electrode in aqueous halide solutions containing benzotriazole (BTAH) at different pHs has been investigated in order to study the formation of cuprous complexes as passivating species.
Patent•
19 Jul 1985
TL;DR: A polyacetal resin resin is a mixture of a polyamide with a stabilizer selected from a benzotriazole compound, a benzophenone compound and an aromatic benzoate compound as discussed by the authors.
Abstract: A polyacetal resin composition comprises a polyacetal resin as the matrix, (A) 0.01 to 2.0 percent by weight of a stabilizer selected from a benzotriazole compound, a benzophenone compound and an aromatic benzoate compound and (B) 0.01 to 2.0 percent by weight of a hindered amine compound and is improved in weatherability
Patent•
12 Sep 1985
TL;DR: In this article, the authors proposed to prevent the formation of red rust on iron and white rust on zinc by combining the ammonium or amine salt of a specified aromatic carboxylic acid, at least one kind of specified benzotriazole or triazole and an alkali metallic salt.
Abstract: PURPOSE:To prevent effectively the formation of red rust on iron and white rust on zinc by combinedly using the ammonium or amine salt of a specified aromatic carboxylic acid, at least one kind of specified benzotriazole or triazole and an alkali metallic salt of a specified aromatic carboxylic acid. CONSTITUTION:A volatile corrosion inhibitor is prepd. as an aqueous soln. by adding 100pts.wt. ammonium or amine salt of an aromatic carboxylic acid represented by formula I, 5-200pts.wt. at least one kind of benzotriazole represented by formula II or triazole represented by formula III and 10-500pts. wt. alkali metallic salt of an aromatic carboxylic acid represented by formula IV. In the formulae, each of R and R3 is 1-10C alkyl, nitro or the like and each of R1 and R2 is H, methyl or the like. The corrosion inhibitor is applied to or impregnated into craft paper or the like and used as a volatile corrosion inhibitor sheet or the like.
TL;DR: In this article, the preparation and properties of mono-and di-nuclear rhodium(I) complexes of general formulae RhClL2(btzH), [Rh(μ-btz)L2]2, Rh2(μ)-btz)(μ-N3)(L2)2 and Rh2 (μ-btscN)(COD)2 [L2 = diolefin, (CO)2 or (CO)(PPh3)], and related tetranuclear derivatives are reported.
Patent•
18 Oct 1985TL;DR: In this paper, a process for producing mixtures of the formulae I and II (I) (II) is described and a process to produce mixtures with the said type is also described.
Abstract: Mixtures of the compounds of the formulae I and II (I) (II) are metal passivators for functional fluids, such as hydraulic fluids and metal-working fluids in the form of aqueous polyglycol/polyglycol ether mixtures, glycol systems, oil-in-water and water-in-oil emulsions, as well as anti-freeze compositions based on glycol. A process for producing mixtures of the said type is also described.
TL;DR: In this paper, the influence of laser illumination of copper electrodes during the oxidation/reduction treatment on surface enhanced Raman scattering from benzotriazole and pyridine has been investigated in electrolytes containing Cl−, Br−, I− or SO2−4.
Patent•
3M1
TL;DR: In this paper, a process is described for forming a high contrast photographic image by developing a silver halide photographic element, including at least a silver-halide emulsion layer, with an aqueous alkaline developing solution containing a dihydroxybenzene developing agent, a superadditive developing agent and an antioxidant at a pH of less than 12 in the presence of a hydrazine compound.
Abstract: A process is disclosed for forming a high-contrast photographic image by developing a silver halide photographic element, including at least a silver halide emulsion layer, with an aqueous alkaline developing solution containing a dihydroxybenzene developing agent, a superadditive developing agent and an antioxidant at a pH of less than 12 in the presence of a hydrazine compound, an organic antifogging and contrast promoting agent selected within the class including a benzotriazole compound and a benzimidazole compound and a non polymeric hydroxymethylidyne group containing compound of formula: ##STR1## wherein R 1 and R 2 each independently represent a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, or R 1 and R 2 together complete a non aromatic cyclic group
Patent•
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28 Feb 1985
TL;DR: In this article, a titled ink of high dispersion stability and corrosion resistance, comprising a pigment, specific styrene-acrylic acid copolymer, benzotriazole, water-soluble organic solvent and water, was presented.
Abstract: PURPOSE: To provide the titled ink of high dispersion stability and corrosion resistance, comprising a pigment, specific styrene-acrylic acid copolymer, benzotriazole, water-soluble organic solvent and water CONSTITUTION: The objective ink comprising (A) a pigment, (B) a styrene-acrylic acid copolymer of formula [R 1 is -(CH 2 ) m -H; m is integer 0W5; R 2 is -(CH 2 ) l -H; lis integer 0W2], (C) benzotriazole, (D) a water-soluble organic solvent and (E) water The amounts of the components (A), (B), and (C) to be used are pref such as to be 5W20wt%, 2W15wt% and 001W1wt%, based on the whole amount of the ink, respectively COPYRIGHT: (C)1986,JPO&Japio
Patent•
28 May 1985
TL;DR: In this paper, the authors proposed a method to obtain the titled ink of high corrosion resistance to metal, with good pigment dispersibility, most suitable for ball point pen with its chip part made of metal, by incorporating, as a rust proofing agent, specific benzotriazole derivative in the base ink.
Abstract: PURPOSE: To obtain the titled ink of high corrosion resistance to metal, with good pigment dispersibility, most suitable for ball point pen with its chip part made of metal, by incorporating, as a rust proofing agent, specific benzotriazole derivative in the base ink. CONSTITUTION: The objective ink can be obtained by incorporating (A) the base ink comprising (i) pigment (e.g., carbon black), (ii) dispersant (e.g., styrene- methacrylic acid copolymer monoethanolamine salt) and (iii) aqueous medium with (B) as a rest proofing agent, a benzotriazole derivative of formula (R is H, methyl, ethyl, amino, methoxy, ethoxy or halogen). The compound of the formula can be prepared by introducing bis(β-oxyethyl)aminomethyl group into benzotriazole through Mannich reaction. COPYRIGHT: (C)1986,JPO&Japio
Patent•
10 Sep 1985TL;DR: In this article, an ultraviolet light stabilized polyarylate containing articles comprising an article made from a polyarylated coated with a solution of (a) substituted benzotriazole and a polymer or (b) a substituted benetriazoles.
Abstract: AN ULTRAVIOLET LIGHT STABILIZEDPOLYARYLATE CONTAINING ARTICLE ABSTRACT OF THE DISCLOSUREDescribed are ultraviolet light stabilized polyarylate containing articles comprising an article made from a polyarylate coated with a solution of (a) a substituted benzotriazole and a polymer or (b) a substituted benzotriazole. S P E C I F I C A T I O N
TL;DR: In this paper, the effect of benzotriazole (BTA) on the corrosion of brass was studied by means of immersion tests and galvanostatic measurements, and it was found that BTA showed a good inhibition effect in some corrosive media.
Patent•
10 Dec 1985TL;DR: In this paper, a substituted benzotriazoleamide was used with alkyl aldehydes and dialkylhydrogen phosphites to improve the anti-wear properties of lubricant oils and greases.
Abstract: Benzotriazole or a substituted benzotriazole when reacted with alkyl aldehydes and dialkylhydrogen phosphites provide products which improve the load-carrying, antiwear properties of lubricant oils and greases.
Patent•
26 Dec 1985
TL;DR: In this article, a thermoplastic resin composition with both high heat resistance and light stability was obtained by blending a thermoplastics containing a polymer with its side chain carrying imide group, and each specific light stabilizer and hindered phenol compound.
Abstract: PURPOSE: To obtain a thermoplastic resin composition with both high heat resistance and light stability, by blending a thermoplastic resin containing a polymer with its side chain carrying imide group, and each specific light stabilizer and hindered phenol compound. CONSTITUTION: The objective composition can be obtained by blending (A) 100pts.wt. of a resin prepared by blending (i) a polymer prepared by imidemodification of copolymer made of polymerization between an aromatic vinyl monomer and unsaturated dicarboxylic acid anhydride in the presence or absence of a polymer with its side chain carrying imide group, e.g. rubbery polymer and (ii) and thermoplastic resin such as ABS, (B) 0.001W5(pref. 0.05W4) pts.wt. of a light stabilizer with a melting point ≥50°C selected from salifylic acid ester derivatives, benzophenone derivatives, benzotriazole derivatives, etc. and (C) 0.01W5(pref. 0.03W3)pts.wt. of a hindered phenol compound with a molecular weight ≥300. COPYRIGHT: (C)1987,JPO&Japio
TL;DR: In this paper, the linkage isomerism in penta-ammine(benzotriazole)ruthenium(II),(III) complexes has been investigated in aqueous solution, using spectroelectrochemistry, cyclic voltammetry, and n.m.r. spectroscopy.
Abstract: The linkage isomerism in penta-ammine(benzotriazole)ruthenium(II),(III) complexes has been investigated in aqueous solution, using spectroelectrochemistry, cyclic voltammetry, and n.m.r. (1H, 13C) spectroscopy. The deprotonation of the RuII complex (pKa= 6.4) leads to a single, C2v isomer which can be reversibly oxidized to RuIII, with E°=–0:127 V versus normal hydrogen electrode. The oxidized complex isomerizes within the time-scale of the cyclic voltammetry, forming a mixture of Cs(N1) and C2v(N2) linkage isomers, with an equilibrium constant of 1.4 favouring the symmetric species. The analysis of the isomerization reactions in terms of a chemical– electrochemical scheme supports an intramolecular mechanism, involving π-bonded activated complexes.
TL;DR: C 7 H 7 HgN 3 cristallise dans P2 1 /n avec Z=4; affinement jusqu'a R=0,0271.
Patent•
02 Jul 1985
TL;DR: In this article, the authors proposed to add an UV absorber, a light stabilizer and a specified organophosphorus compound to a composition comprising a polyolefin and an inorganic filler.
Abstract: PURPOSE:To increase the weathering resistance markedly, by adding an UV absorber, a light stabilizer and a specified organophosphorus compound to a composition comprising a polyolefin and an inorganic filler. CONSTITUTION:To a composition comprising 100pts.wt. polyolefin and 1-100pts. wt. inorganic filler, 0.01-0.5pt.wt. benzotriazole or benzophenone UV absorber, 0.01-1pt.wt. hindered amine or phenyl benzoate light stabilizer and 0.01-1pt.wt. organophosphorus compound of formula I or II (wherein R1 and R2, which may be different from each other, are 1-18C alkyls and n is 0-3). As the compounds of formula I, tetrakis(2,4-di-t-butylphenyl)-4,4'-biphenylene diphosphonite is preferable. An example of the compound of formula II is bis(2,4' di-t-butylphenyl)pentaerythritol diphosphonite. The effect of the above mixture is particularly marked for polypropylene.
TL;DR: In this paper, the Nα-ferrocenylalkylation of the benzotriazolide ion by α-hydroxyferrocensyl derivatives was carried out in a two-phase system consisting of CH2Cl2 and 45% aqueous HBF4 to give high yields of N-ferricenyl-alkylbenzotrieazoles.
Abstract: The N-α-ferrocenylalkylation of the benzotriazolide ion by α-hydroxyferrocenyl derivatives was carried out in a two-phase system consisting of CH2Cl2 and 45% aqueous HBF4 to give high yields of N-ferrocenylalkylbenzotriazoles.