- Method of synthesizing hindered phenolic antioxidant 3114 with one-step high pressure method
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The invention relates to a method of synthesizing a hindered phenolic antioxidant 3114 with a one-step high pressure method. The method is characterized by comprising the following steps of under protection of nitrogen, by taking 2,6-di-tert-butylphenol, paraformaldehyde and isocyanuric acid as raw materials and methanol as a reaction solvent, under the effect of a catalyst, controlling a reactionsystem to perform reaction for 2h at high pressure and 110-120 DEG C, rising the temperature to 130-140 DEG C, performing reaction for 4h to obtain a crude product, and performing filtering, recrystallization, washing and drying to obtain an object product. The method provided by the invention is of high-pressure reaction and one-step synthesis and is less in equipment investment, single in raw material and simple to operate; and the purity of a product can reach 99 percent or above, the yield is high, and less three wastes are produced.
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Paragraph 0020; 0021; 0028; 0029
(2018/11/22)
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- Thioether substituted hydroxybenzophenones and stabilized compositions
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2-Hydroxybenzophenone derivatives substituted in the 4′-position by a thioether moiety exhibit enhanced absorption in the UV at longer wavelength. Compositions comprising organic material subject to actinic degradation are beneficially stabilized with such derivatives.
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- 2-(2′-hydroxyphenyl)benzotriazoles used as U.V. stabilizers
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2-(2′-hydroxyphenyl)benzotriazoles having general formula (I). The above 2-(2′-hydroxyphenyl)benzotriazoles are useful as light stabilizers for organic polymers.
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- 2-(2′-hydroxyphenyl) benzotriazoles containing a 2,4-imidazolidinedione group and process for their preparation
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2-(2′-hydroxyphenyl)benzotriazoles having general formula (I). The above 2-(2′-hydroyzphenyl)benzotriazoles having general formula (I) are useful as heat, oxygen and light stabilizers for organic polymers. In particular they are useful as UV stabilizers for organic polymers.
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- Mixture of substances containing compounds with vinyl groups and stabilizers
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A mixture contains one or more vinyl-containing compounds as component (A) and, as a further component, a stabilizer (B) which contains one or more readily volatile nitroxyl compounds as component (b1), one or more sparingly volatile nitroxyl compounds as component (b2), if required one or more aromatic nitro compounds as component (b3) and, if required, one or more iron compounds as component (b4).Stabilizers (B) contain the components (b1) and (b2), (b1) and (b2) and (b3), (b1) and (b2) and (b4), and (b1), (b2), (b3) and (b4), and the premature polymerization of vinyl-containing compounds during their purification or distillation is inhibited by a process in which a stabilizer (B) is added or the components of stabilizer (B) are added as individual substances or in at least two groups of the components.
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- 2-(2'Hydroxyphenyl) benzotriazoles and process for their preparation
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2-(2'-hydroxyphenyl)benzotriazoles having general formula (I): The above 2-(2'-hydroxyphenyl)benzotriazoles can be used as light stabilizers for organic polymers.
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- 4-acylaminopiperidin-N-oxyle
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4-Acylaminopiperidine N-oxides Ia where A1 is hydrogen or an organic radical and B1 is a radical IIa STR1 where R1 -R4 are each C1 -C4 -alkyl and R1 and R2, on the one hand, and R3 and R4, on the other hand, may furthermore be bonded to form a 5-membered or 6-membered ring, R5 is H or C1 14 C4 -alkyl and R6 is H or C1 -C18 -alkyl, are used for stabilizing organic materials against the harmful effect of free radicals, particularly in the distillation of monomers which undergo free radical polymerization, especially styrene.
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- 2-(2'Hydroxyphenyl) benzotriazoles and their use as light stabilizers for organic polymers
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2-(2'-hydroxyphenyl)benzotriazoles having general formula (I): The above 2-(2'-hydroxyphenyl)benzotriazoles can be used as light stabilizers for organic polymers.
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- Amorphous modification of 1,1',1"-nitrilo(tri-2-propyl-tris-[2,2'-ethylidene-bis(4,6-di-tert-butylphenyl] phosphite)
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The new amorphous modification of 1,1',1"-nitrilo{tri-2-propyl-tris-[2,2'-ethylidene-bis(4,6-di-tert-butylphenyl)]phosphite } is obtained by cooling rapidly said compound from the melt to ambient temperature. This amorphous form is an effective process stabilizer for polyolefins, particularly polypropylene.
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- Non-migrating 1-hydrocarbyloxy hindered amine derivatives as polymer stabilizers
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1-Hydrocarbyloxy substituted hindered amine compounds which also contain a reactive functional group such as hydroxy, amino, oxirane or carboxyl can be chemically attached to selected polymer substrates by condensation reactions to give polymers containing a chemically-bonded, non-migrating stabilizer having excellent stabilization efficacy for protecting said polymer substrate from the adverse effects of actinic light.
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- Substituted 1,4-diamino-2-butene stabilizers
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N,N,N',N'-Tetrasubstituted 1,4-diamino-2-butenes where the substituents are alkyl, cycloalkyl, aralkyl, aryl or mixtures thereof provide effective antioxidant protection to lubricants and/or synthetic polymers.
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- Perfluoroalkyl substituted hydroxyphenylalkanoic ester antioxidants and stabilized compositions
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Perfluoroalkyl substituted neopentyl alcohols can be reacted with substituted hydroxphenylalkanoic esters to form perfluoroalkyl containing hydroxyphenylalkanoic ester antioxidants. The perfluoroalkyl substituted hindered hydroxyphenyl alkanoates are stablizers which confer superior processing stability to polymers processed at elevated temperatures such as polypropylene, as well as protecting said polymers from thermal and oxidative degradation.
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- Carbohydrate substituted dibenzo(d,f)(1,3,2)dioxaphosphepin stabilizers
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Carbohydrate substituted dibenzo[d,f][1,3,2]dioxaphosphepin compounds of formula I STR1 where A is a carbohydrate residue are effective stabilizers for polymers processed at elevated temperatures and subject to thermal or oxidative degradation.
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- 3,9-carbohydrate substituted 2,4,8,10-tetraoxa-3,9-diphosphaspiro(5.5)undecane phosphite stabilizers
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Carbohydrate substituted phosphites of Formula I STR1 where A is a carbohydrate residue are effective stabilizers for polymers processed at elevated temperatures and subject to thermal or oxidative degradation.
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- Beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl) phosphite]
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The beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl) phosphite] is obtained by crystallizing said compound from the melt at elevated temperatures. The beta crystalline form is an effective process stabilizer for polyolefins, particularly polypropylene.
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- Non-migrating 1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidine 1,3,5-triazine derivatives
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1-Hydrocarbyloxy-2,2,6,6-tetramethylpiperidine derivatives of s-triazines having functional groups such as hydroxy, amino, carboxy, epoxy, isocyanate or the like present are capable of chemically bonding with polymer substrates having anhydride, epoxide, alkoxymethylmelamine or isocyanate moieties present. This chemical bonding prevents migration or loss of the stabilizer during subsequent processing or end-use application of the stabilized polymer.
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- Piperidine compounds containing silane groups for use as stabilisers for organic materials
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The present invention relates to novel piperidine compounds of the formula (I) STR1 in which A is e.g. a group of the formula STR2 where R4 is e.g. hydrogen or methyl, X3 is e.g. --O-- or --NH-- and R5 ' is e.g. ethylene, propylene or decamethylene, R1 is e.g. methyl, methoxy, ethoxy or OH, R2 and R3 are e.g. methyl, m+n is e.g. a number from 1 to 40, n varies e.g. from zero to 50% of the sum m+n, X1 is e.g. as defined for R1 or is a group (CH3)3 SiO-- and X2 is e.g. hydrogen, methyl, ethyl, a group (CH3)3 Si-- or a group STR3 and, when m+n is a number from 3 to 10, X1 and X2 together also form a direct bond. The compounds of the formula (I) are effective in stabilising an organic material against thermal, oxidative and light-induced degradation.
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- 2-(2-hydroxy-3-perfluoroalkyl thiomethyl-5-alkylphenyl)2H-benzotriazoles and stabilized compositions thereof
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2-(2-Hydroxy-3-perfluoroalkylthiomethyl-5-alkylphenyl)-2H-benzotriazoles are prepared by reacting the Mannich base hydrohalide or quaternary salt of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a perfluoroalkyl mercaptan. The products 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.
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- Substituted 1-hydroxy-2,6-diaryl-4-piperidone ketals and polymer compositions stabilized therewith
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1-Hydroxy-2,6-diaryl-4-piperidone ketal derivatives, such as the compound of formula I STR1 wherein Ar1 and Ar2 are each phenyl, R1 to R6 are all hydrogen, X1 and X2 are each --O-- and T is a direct bond, are novel compounds and are effective process stabilizers, such as polypropylene, for polymers processed at elevated tempertures providing both good melt flow stabilization and good resistance against discoloration during said processing.
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- Substituted 1-aminonaphthalenes and stabilized compositions
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Substituted 1-aminonaphthalenes of formula I STR1 wherein n is 1-3, Ar is arylene, R1 and R2 are independently hydrogen, alkyl or phenyl, R3 is hydrogen, alkyl or substituted alkyl, and R4 and R5 have independently the same definitions as R3 or are independently aryl, substituted aryl or cycloalkyl, are effective stabilizers for lubricating oil or polymer compositions. The instant compounds are particularly effective in lubricating oil compositions when used with a diarylamine antioxidant.
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- Substituted 2,3-dihydroperimidine stabilizers
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N-Allyl and N-methylene-thio substituted 2,3-dihydroperimidine compounds are very effective antioxidant stabilizers for organic material subject to oxidative or thermal degradation, particularly for lubricant compositions.
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- Thioaminal stabilizers
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Thioaminal compounds of the indicated formulae are effective in stabilizing organic materials against oxidative and thermal degradation, said compounds particularly imparting exceptional oxidative stability to various organic substrates such as lubricants and elastomers; and certain of said compounds as novel compounds.
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- Corrosion inhibiting composition
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A composition, in contact with a corrodable metal surface, which composition comprises: (a) an aqueous-based or oil-based system; and (b) as inhibitor for protecting the metal surface against corrosion, at least one compound having the formula I: STR1 as well as salts or partial esters thereof wherein: n is 0 or an integer ranging from 1 to 20, R is a straight or branched chain C4 -C30 alkyl group, optionally interrupted by one, two or three oxygen atoms or substituted by one, two or three hydroxy groups, a C5 -C12 cycloalkyl group, a C6 -C10 aryl group optionally substituted by one, two or three C1 -C12 alkyl groups, or a C7 -C13 aralkyl group which is optionally substituted by a hydroxyl group; R1 is H or a straight- or branched chain C1 -C4 alkyl group; R2 is H, a straight or branched chain C1 -C4 alkyl group or CO2 H; R3 is H, a straight or branched chain C1 -C4 alkyl group, --CH2 CO2 H or --CH2 CH2 CO2 H; R4 is H, a straight or branched chain C1 -C4 alkyl group or CO2 H; R5 is H, a straight or branched chain C1 -C4 alkyl group, CH2 CO2 H or CH2 CH2 CO2 H; provided that at least one group R4 must be CO2 H, with the provisio, that compositions comprising an oil-based system and a compound having the formula STR2 wherein R, R1 and R2 are hydrogen or alkyl radicals, having a total from 10 to 38 C-atoms, are excluded.
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- Corrosion inhibition
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The present invention provides a composition in contact with a corrodable metal surface, comprising a functional fluid and, as corrosion inhibitor, a compound having the formula I: as well as salts or esters thereof, wherein, R1 is C4-C20 linear or branched alkyl, phenyl or C7-C20 alkylphenyl;, R2 is C1-C12 linear or branched alkyl, phenyl or C7-C20 alkylphenyl, or arylalkyl containing 7-20 carbon atoms;, X is CH2, O or S;, Y is O or S; and, Z is -(CH2)n- in which n is 1, 2, 3, 4 or 5, or Z is -CH2-CH(CH3)-. Some of the compounds of formula I are new.
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- 1,4-Oxathianones and 1,4-oxathiepanones
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The compounds of the formula STR1 in which R is C1 -C24 alkyl, C3 -C20 alkenyl, C5 -C6 cycloalkyl, unsubstituted or C1 -C4 alkyl-substituted phenyl or phenyl-C1 -C4 alkyl, n is 1 or 2, and X is S or O, are highly suitable as additives, in particular as antiwear and high-pressure additives, and as corrosion inhibitors in functional fluids, for example in lubricants, fuels, hydraulic fluids, metal-working fluids and drilling fluids.
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- Triazole-organodithiophosphate reaction product additives for functional fluids
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New reaction products, useful as additives for functional fluids, are obtained by reacting, at elevated temperature, (A) a triazole having the formula IA or IB: STR1 wherein R7 is hydrogen or a C1 -C20 alkyl residue; R8 and R9 are the same or different and each is C1 -C20 alkyl, C3 -C20 alkenyl, C5 -C12 cycloalkyl, C7 -C13 aralkyl, C6 -C10 aryl or R8 and R9, together with the nitrogen atom to which they are attached, form a 5-, 6- or 7-membered heterocyclic residue or R8 and R9 is each a residue of formula: wherein X is O, S or N(R12), R12 is hydrogen or C1 -C20 alkyl, "alkylene" is a C1 -C12 alkylene residue and n is 0 or an integer from 1 to 6; R10 is hydrogen, C1 -C20 alkyl or C6 -C10 aryl or C7 -C18 alkyl phenyl; and R11 is hydrogen, C1 -C20 alkyl or a residue --CH2 NR8 R9 wherein R8 and R9 have their previous significance; with (B) an organodithiophosphate having the formula: STR2 in which R13 is a C1 -C20 alkyl or C7 -C18 alkyl phenyl or C7 -C13 aralkyl group, M is a metal ion of Group IA, IB, IIA, IIB, VB, VIB, VIIB or VIII of the Periodic System of Elements, and y is the valency of M.
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- Pentaerythritol diphosphite stabilizers and process
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Pentaerythritol diphosphites corresponding to the formula STR1 being useful for stabilizing organic materials against thermal, oxidative and actinic degradation and a process for the preparation thereof.
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