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Poly(phenylenediamine) Dispersions
Journal of Colloid and Interface Science, 2001The formation and properties of poly(phenylenediamine) colloidal dispersions were investigated. Oxidative dispersion polymerization of 1,3-phenylenediamine dihydrochloride stabilized with poly(N-vinylpyrrolidone) was taken as a reference experiment. Conductivity, temperature, and acidity of the reaction mixture were recorded during the polymerization ...
Tetyana, Sulimenko +2 more
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Sensitization to p-Phenylenediamine
Archives of Dermatology, 1965p-Phenylenediamine (PPD) from 0.2 mg to 1.6 mg in water or in petrolatum was applied as a patch test to 501 patients with different dermatoses, asthma, hay fever, and venereal diseases. Of these patients 10.6% reacted within the first five days indicating previous hypersensitivity and 14.4% between the sixth and the 16th day indicating the initiation ...
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Progress in Polymer Science, 2015
Abstract The chemical or electrochemical oxidation of phenylenediamines in acidic aqueous media yields the corresponding oligomers or polymers. Their structures and properties are discussed in relation to a closely-related conducting polymer, polyaniline.
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Abstract The chemical or electrochemical oxidation of phenylenediamines in acidic aqueous media yields the corresponding oligomers or polymers. Their structures and properties are discussed in relation to a closely-related conducting polymer, polyaniline.
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p-Phenylenediamine sensitization and occupation
Contact Dermatitis, 2010p-Phenylenediamine (PPD) is an extreme delayed-type skin sensitizer, and is relevant in both occupational and non-occupational exposures.To estimate the prevalence of PPD sensitization in a population of consecutive patients with suspected allergic contact dermatitis who attended units of dermatology or occupational medicine in north-eastern Italy and ...
MALVESTIO, ANDREA +6 more
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In vitro cytotoxicity of methylated phenylenediamines
Toxicology Letters, 1992The acute cytotoxicities of methylated phenylenediamines (PDs) were evaluated with the neutral red assay, using BALB/c 3T3 mouse fibroblasts as the bioindicators. When the test agents were grouped according to their degree of methylation, good correlations were noted between their in vitro cytotoxicity and their in vivo myotoxicity to experimental ...
H, Babich, A, Stern, R, Munday
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Aniline-phenylenediamine copolymers
Synthetic Metals, 1999The electrical conductivity of materials based on polyaniline can be controlled on submolecular level by the copolymerization of aniline with various phenylenediamines. The joint chemical oxidation of aniline with phenylenediamines yields products with the dc conductivity spanning over more than eleven orders of magnitude.
J. Prokeš +3 more
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Coordinating ability of phenylenediamines
Coordination Chemistry Reviews, 1999Abstract The coordinating ability of aromatic diamines is conditioned both by the low basicity of the nitrogen atoms and their situation in ortho, meta or para positions on the aromatic ring. Important aspects of the aromatic diamines taking into account their possible applications are: processes based on electron transfer forming Wurster type ...
Alfredo Mederos +4 more
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Final Report On the Safety Assessment of m-Phenylenediamine and m-Phenylenediamine Sulfate1
International Journal of Toxicology, 1997The ingredients m-Phenylenediamine and m-Phenylenediamine Sulfate are aromatic amines that function as hair colorants in cosmetic products. Both are currently used in hair dye products at concentrations of up to 3%. Percutaneous absorption of m-Phenylenediamine has been demonstrated in animals.
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