Polymerized 2,2,4-trimethyl

Alkylated diphenyl amines (11) and derivatives of both dihydro quiaoline (12) and polymerized 2,2,4-trimethyl-l,2-dihydroquiQoline [26780-96-1] (13) develop less color than the -phenylenediamiaes and are classified as semistaining antioxidants. Derivatives of dihydro quiaoline are used for the stabilization of animal feed and spices. 

When staining tendencies of the substituted paraphenylene diamines cannot be tolerated, semistaining amine antioxidants are used to provide some protection to the elastomers. The semistaining antioxidants include polymerized 2,2,4-trimethyl-l,2-dihydroquinolines (13) and substituted diphenylamines such as 4,4,-bis(0C,CC-dimethylbenzyl)diphenylamine (14). These compounds protect unsaturated elastomers against oxidation but provide no protection against ozone. 

P LDPE, density = 0.918 g/mL, M 75,000 EPDM, density = 0.86 g/mL containing 45% propylene and 8% ENB for thermo-oxidative work, 100-mm-thick him contained 0.5% polymeric 2,2,4-trimethyl-1,2-dihydroquinohne as a stabUizer. 

For power cable insulation. Pentaerythrityltetrakis-3-(3,5-di-ferf-butyl-4-hydroxyphenyl)-propionate, polymeric 2,2,4-trimethyl-1,2-dihydroquino-line, 4,4 -thiobis-(3-methyl-6-rerr-butyl-phenol), 2,2 -thiodiethyl-bis-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate, and distearyl thiodipropionate are used as synergists. 

Polymerized 2,2,4-trimethyl-1,2-dihydroquinoline. See2,2,4-Trimethyl-1,2-dihydroquinoline polymer... 

Synonyms 1,2-Dihydro-2,2,4-trimethylquinoline homopolymer 1,2-Dihydro-2,2,4-trimethylquinoline polymer Poly-(1,2-dihydro-2,2,4-trimethylquinoline) Polymerized 1,2-dihydro-2,4,4-trimethyl quinoline Polymerized 2,2,4-trimethyl-1,2-dihydroquinoline TDQP TMDHQ TMQ Trimethyidihydroquinoline polymer 2,2,4-Trimethyl-1,2-dihydro-quinoline, polymeric Classification Dihydroquinoline Empirical (C H, N) ... 

Polymerized rosin. See Rosin, polymerized Polymerized siloxane. See Silicone Polymerized 2,2,4-trimethyl-1,2-dihydroquinoline. See 2,2,4-Trimethyl-l, 2-dihydroquinoline polymer Polymethacrylamidopropyl trimonium chloride CAS 68039-13-4... 

Goette DK (1984) Raccoon-like periorbital leukoderma from contact with swim goggles. Contact Dermatitis 10 129-131 Hamann CP (1993) Natural rubber latex protein sensitivity in review. Am J Contact Dermat 4 4-21 Hansen KS (1983) Occupational dermatoses in hospital cleaning women. Contact Dermatitis 9 343-351 Hansson C (1994) Allergic contact dermatitis from N-(i,3-dimethylbutyl)-N -phenyl-p-phenlenediamine and from compounds in polymerized 2,2,4-trimethyl-i,2-dihydroquinoline. Contact Dermatitis 30 114-115... 

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