Bis 4-hydroxy-3-methylphenyl

Scheme 10 Complexes with bis(o-hydroxyphenyl)phenylphosphine and bis (2-hydroxy-5-methylphenyl)phenylphosphine...

Bis[2-hydroxy-5-methylphenyl] Tellurium Dichloride 1 In a 250 m/, two-necked flask fitted with a reflux condenser and a nitrogen inlet are placed 5.0 g (18 mmol) of tellurium tetrachloride, 4g (37 mmol) of 1-hydroxy-4-methylhenzenc, and 100 m/ of carbon tetrachloride. The mixture is heated to reflux under nitrogen until evolution of hydrogen chloride ceases (100 h). The mixture is then allowed to cool, the precipitate is collected and washed thoroughly with carbon tetrachloride to remove excess cresol followed by benzene to remove unrcacted tellurium tetrachloride. The residue is recrystallized from methanol yield 2.8 g (36%) m.p. 206-212°. 

Majumder P, Saha S 1978 1,4-Bis(2-hydroxy-5-methylphenyl)- butan-l,4-dione, a biogenetically rare type of phenolic of Berberis coriaria. Phytochemistry 17 1439-1440... 

C35H25C0N2O4, Dibenzoylmethanato-0,0 -(N,N -o-phenylenebis(salicyl-ideneiminato))cobalt(III), 42B, 924 C35H37CUN3O2 2 H2O, N,N -Bis[(2-hydroxy-5-methylphenyl)(4-methyl-phenyl ) methylene ]-3-azahexane- 1,6-diaminecopper(II) dihydrate, 45B, 1075... 

Bis(2-hydroxy-4-methylphenyl)methanone, 446 Bis(2-hydroxy-5-methylphenyl)methanone, 446 Bis(4-hydroxy-2-metliylphenyl)methanone, 447 Bis(4-hydroxy-3-methylphenyl)methanone, 447 (2,4-Dihydroxy-3-methylphenyl)(2-metbylphenyl)methanone, 419 (4,5-Dihydroxy-2-methylphenyl)(2-methylphenyl)methanone, 419 (2,4-Dihydroxyphenyl)(2,4-dimethylphenyl)methanone, 407 (2,4-Dihydroxyphenyl)(2,6-dimethylphenyl)methanone, 407 (2,4-Dihydroxyphenyl)(3,5-dimethylphenyl)methanone, 407 (2,4-Dihydroxyphenyl)(4-ethylphenyl)methanone, 407 (4-Ethoxy-2-hydroxyphenyl)phenylmethanone, 97 (4-Ethoxyphenyl)(4-hydroxyphenyl)methanone, 177 (2-Ethyl-4,5-dihydroxyphenyl)phenylmethanone, 381 (3-Ethyl-2,6-dihydroxyphenyl)phenylmethanone, 381 (4-Ethyl-2,5-dihydroxyphenyl)phenylmethanone, 381 (5-Ethyl-2,4-dihydroxyphenyl)phenylmethanone, 382 (4-Hydroxy-2,3-dimethylphenyl)(4-hydroxyphenyl)methanone, 434... 

Hydroxy-5-methyl-1,3-phenylene)bis[(2-hydroxy-5-methylphenyl) methanone, 539... 

This agrees quite well with the rate constants for intramolecular proton transfer in 2,4-bis(dimethyl-amino )-6-(2-hydroxy-5-methylphenyl)-5-triazine which had been measured by Shizuka et al. ( l6) using laser picosecond spectroscopy. The fluorescence decay constant t of (TIN) was found to be 60 20 ps. Because of the weak intensity all fluorescence lifetimes refer to the pure substance in crystalline form at room temperature. 

N,N -Bis(2-hydroxy-3-carboxybenzylidene)-l,2-diaminoe thane A,iV -Disalicylidene-2-methyl-4-(2-hydroxy-5-methylphenyl)-1,2-butanediamine... 

The dependence of intramolecular proton transfer on solvent friction has been established for 2-(2 -hydroxy-5-methylphenyl) benzotriazole in alcohol and other solvents. Excited-state proton transfer in 2-(2 -hydroxyphenyl) benzothiazole has also been studied 2 Photophysical properties and laser performance of w, w -bis ( oxazol-2-yl)- -oligophenylenes in dioxane have been measured at room temperature. +p increases with the number of phenyl rings between terminally positioned oxazoyl groups. 

Bis(ethylsulfonyl)butane Bis[4-(hexyloxy)phenyl]diazene, 1-oxide A/,A/ -Bis(2-hydroxybenzylidene)-1,2-ethylenediamine Bis(2-hydroxy-3-teff-butyl-5-methylphenyl)melhane Bis(2-hydroxy-5-chlorophenyl) sulfide... 

Benzenedicarboxylic acid, bis [2-(1,1-dimethylethyl)-6-[[3-(1,1 -dimethylethyl)-2-hydroxy-5-methylphenyl] methyl]-4-methyl phenyl] ester... 

Bis (p-hydroxy) benzophenone. See 4,4 -Dihydroxybenzophenone Bis (2-hydroxy-3-t-butyl-5-ethylphenyl) methane. See 2,2 -Methylenebis (4-ethyl-6-t-butylphenol) Bis (4-hydroxy-5-t-butyl-2-methylphenyl) sulfide. See 4,4 -Thiobis-6-(t-butyl-m-cresol) Bis-2-hydroxy-5-chlorophenyl) methane. See Dichlorophene... 

Benzenedicarboxylic acid, bis [2-(1,1-d i methylethyl )-6-[[3-( 1,1 -d imethy lethy I )-2-hydroxy-5-methylphenyl] methyl]-4-methylphenyl] ester Bis r2,4-bis (1,1-dimethylethyl)-6-methylphenyll ethyl ester, phosphorous acid Bis [3,3-bis (4-hydroxy-3-t-butylphenyl) butanoic acid], glycol 3,9-Bis [2-(3-(3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxyM, 1 -dimethylethyl]-2,4,8,10-tetraoxaspiro (5.5) undecane 1,2-Bis (3,5-di-t-butyl-4-hydroxyhydrocinnamoyl) hydrazine... 

Hydroxy-5 -methylphenyl)benzotriazole 2-(2 -Hydroxy-5 -tert-butylphenyl)benzotriazole 2-(2 -Hydroxy-3 -tert-butyl-5 -methylphenyl)-5-chlorobenzotri azole 2-(3,5-Di-tert-butyl-2-hydroxyphenyl)-5-chlorobenzotriazole 2-[2 -Hydroxy-3, 5 -bis(a,a-dimethylbenzyl)phenyl]benzotriazole... 

Fig. 4.59 Synthesis of the UV absorber l,2-bis-[2-(2-hydroxy-5-methylphenyl)-5-benzotriazolyl]-ethane (BHMBE) [64]...

Overall, it could be concluded that the addition of UV stabilizer l,2-bis[2-(2-hydroxy-5-methylphenyl)-5-benzotriazolyl]ethane (BHMBE) to the prepolymer step of the studied PUs can be used successfully [64]. TheUV absorber first formed a temporary chemical binding as a result of the addition reaction between OH phenolic groups and the isocyanate groups belonging to the prepolymer. During... 

Contact allergies to UV-light absorbers like 2-hydroxybenzophenone, resorcinol monobenzoate, 2-(2-hydroxy-5-methylphenyl)benzotriazole (Tinuvin P) and bis-(2,2,6,6)-tetramethyl-4-piperidyl-sebacate have been encountered [14-16]. Organic pigments, mostly of the azo types, are potentially sensitizing additives in plastics [17,18]. 

Bis(n-octylthio-6-(4-hydroxy-3,5-di-tert-butylanilino)-1,3,5-triazine 2-(l,l-dimethylethyl)-6-[3-(l,l-dimethylethyl)-2-hydroxy-5-methylphenyl]methyl-4-methylphenylacrylate... 

UVA 2-hydroxy-4-octyloxybenzophenone 2-hydroxy-4-methoxybenzophenone 2-(2H-benzotriazol-2-yl)-p-cresol 2-(2H-benzotriazole-2-yl)-4,6-di-tert-pentylphenol 2-(2H-benzotriazole-2-yl)-4-(1,1,3,3-tetraethylbutyl)phenol 2,4-di-tert-butyl-6-(5-chloro-2H-benzotriazole-2-yl)-phenol 2-[4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl]-5-(octyloxy) phenol ethyl-2-cyano-3,3-diphenylacrylate HAS 1,3,5-tri-azine-2,4,6-triamine, N,N [1,2-ethane-diyl-bis[[[4,6-bis[butyl-(1,2,6,6-pentamethyl-4-piperidinyl)amino]-1,3,5-triazine-2-yl] imino]-3,1 -propanediyi] bis[N ,N -dibutyl-N ,N -bis(1,2,2,6,6-pentamethyl-4-piperidinyl)- bis(2,2,6,6-tetramethyl-4-piper-idyl) sebacate 2,2,6,6-tetramethyl-4-piperidinyl stearate N,N -bisformyl-N,N -bis-(2,2,6,6-tetramethyl-4-piperidinyl)-hexamethylendiamine alkenes, C20-24-.alpha.-, polymers with maleic anhydride, reaction products with 2,2,6,6-tet-ramethyl-4-piperidinamine 1,6-hexanediamine, N, N -bis(2,2,6,6-tetramethyl-4-piperidinyl)-, polymers with 2,4-di-ohloro-6-(4-morpholinyl)-1,3,5-triazine 1,6-hexanediamine, N,N -bis(2,2,6,6-tetramethyl-4-piperidinyl)-, polymers with morpholine-2,4,6-trichloro-1,3,5-triazine reaction products, methylated Phenolic antioxidants ethylene-bis(oxyethylene)-bis(3-(5-tert-butyl-4-hydroxy-m-tolyl)-propionate) 2,6,-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5,-triazine-2-ylamino) phenol pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) 2-(1,1 -dimethylethyl)-6-[[3-(1,1 -dimethylethyl)-2-hydroxy-5-methylphenyl] methyl-4-methylphenyl acrylate isotridecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate 2,2 -ethylidenebis (4,6-di-tert-butylphenol) 2,2 -methylenebis(4-ethyl-6-tertbutylphenol) 3,5-bis(1,1-dimethyethyl)-4-hydroxy-benzenepropanoic acid, C13-15 alkyl esters phenol, 4-methyl-, reaction products with dicyclopen-tadiene and isobutene Phosphite trinonylphenol phosphite isodecyl diphenyl phosphite... 

Stabilizers UVA 2(2 -hydroxy-5-methylphenyl)benzotriazole Screener carbon black HAS bis(1,2,2,6,6-pentamethyl-4-piperidinyl)-2-n-butyl-2-( 3,5-di-tert-bulyl-4-hydroxy-benzyl) malonate Phenolic antioxidants phenol, 4-methyl-, reaction products with dlcyclopentadiene and isobutene 2,6,-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5,-triazine-2-ylamino) phenol 2- (1,1 -dimethylethyl)-6-[[3-(1,1 -dimethylethyl)-2-hydroxy-5-methylphenyl] methyl-4-methylphenyl acrylate isotridecyl- 3- (3,5-di-tert-biAyl-4-hydroxyphenyl) propionate 3,5-bis(1,1-dimethyethyl)-4-hydroxy-benzenepropanoic acid. Cl 3-15 alkyl esters 2,2 -isobutylidenebis(2,4 imethylphenol) Amine nonylated diphenylamine Thiosynergist 2,2 -thiobis(6-tert-butyl-4-methylphenol) 4,6-bis(octylthiomethyl)-o-cresol ... 

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