Naphthalate polyester articles can be coated with polymerizable compositions containing a vinyl-functional crosslinkable film former, a large amount of benzotriazole and a copolymerizable monomer that solubilizes the benzotriazole. The cured compositions help protect the naphthalate polyester from UV exposure and other weathering effects.

Uv resistant naphthalate polyester articles

Plastic articles can be coated with polymerizable compositions containing a vinyl-functional crosslinkable film former, a large amount of benzotriazole and a copolymerizable monomer that solubilizes the benzotriazole. The cured compositions help protect the article from UV exposure and other weathering effects.

Outdoor weatherable photopolymerizable coatings

Compsns. are claimed which comprise organic materials stabilised against light, oxygen and/or heat by inclusion of 2,4,6-triaryl-1,3,5-triazines or 2,4,6-triaryl-1,3- pyrimidines of formula (I) which act as crypto-light protectants, there also being claimed some of (I) which are novel cpds., such cpds. differing from (I) in the definitions of R , R and R . n = 1 or 2; A = N or CH; R and R = e.g. H, 1-4C alkyl or -OR ; R and R = e.g. H; 1-4C alkyl or alkoxy; O- interrupted and OR -substd. 3-12C alkoxy; Cl or OR ; R or -O.R or, when R and R are not OR , also H; R = e.g. H or 1-10C alkyl; R = e.g. COR or SO2R ; R = e .g.1-8C alkyl; R = e,g. 1-3C alkyl, CF3, CCl3, 1-4C alkoxy, 2 or 3C alkenyl, Ph, tolyl or xylyl; R = e.g. 1-8C alkyl or Ph; R = e.g. Ph or 7-9C alkylphenyl; R = e.g. H, oxyl, 1-12C alkyl, 1-18C alkoxy, cyclohexyloxy or 7-11C phenylalkyl; and R = e.g. 1-18C alkyl, allyl, or 1-12C alkyl substd. by -OR , 1-18C alkoxy, -COOR and/or -O.CO.R .

Latent light stabilizers

A composition for oxidative dyeing of hair comprising, by weight of the total composition; 0.0001-20 % of at least one primary intermediate and at least one coupler for the formation of oxidation dyes, 0.01-10 % of a 2-hydroxyphenyl benzotriazole compound which absorbs ultraviolet radiation in the wavelength range of 200 to 400 nanometers, 0.5-20 % surfactant, and 10-65 % water; a two component kit containing the hair dye composition and a developer, and a method for oxidative dyeing of hair with said kit.

Hair dye compositions and process

Disclosed are potassium cesium tungsten bronze solid solution particles of the formula KxCSyWOz, where x + y ≤ 1 and 2 < z ≤ 3. The particles are for instance micron or nano scaled particles. Also disclosed are organic or inorganic compositions comprising an organic or inorganic substrate and incorporated therein the present potassium cesium tungsten bronze solid solution particles. The substrates are for instance plastics, coatings, inks, adhesives, ceramics or glass. Also disclosed is a method for the preparation of the present potassium cesium tungsten bronze solid solution particles, which method comprises mixing a suitable tungsten source with a salt of potassium and a salt of cesium to form a powder mixture and exposing the powder mixture to a plasma torch under a reducing atmosphere. The present tungsten bronze particles are suitable NIR absorbers and heat shielding additives.

Potassium cesium tungsten bronze particles

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.

Liquid 2-(2-hydroxy-3-higher branched alkyl-5-methyl-phenyl)-2H-benzotriazole mixtures, stabilized compositions and processes for preparing liquid mixtures

Liquid substituted 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 30 carbon atoms in the presence of an acid 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.

Liquid substituted 2H-benzotriazole mixtures, stabilized compositions

Liquid substituted 2H-benzotriazole mixtures, stabilized compositions and processes for preparing the liquid mixtures

Liquid substituted 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and/or realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 40 carbon atoms in the presence of an acid 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.

Liquid substituted 2H-benzotriazole mixtures

Flussige 2-(2-Hydroxy-3-hoherverzweigtalkyl-5--methylphenyl)-2H-benztriazolgemische werden durch Alkylierung von 2-(2-Hydroxy-5-methylphenyl)-2H-benztriazol mit einem geradkettigen oder verzweigten Alken mit 8 bis 30 Kohlenstoffatomen in Gegenwart eines sauren Katalysators bei 100-200°C hergestellt. Liquid 2- (2-hydroxy-3-hoherverzweigtalkyl-5 - methylphenyl) -2H-benztriazolgemische be prepared by alkylation of 2- (2-hydroxy-5-methylphenyl) -2H-benzotriazole with a straight or branched chain alkene of 8 to 30 carbon atoms in the presence of an acid catalyst at 100-200 ° C. Die flussigen Gemische zeigen ausgezeichnete Wirksamkeit beim Schutz organischer Substrate gegen licht-induzierten Abbau sowie gute Resistenz gegen Verfluchtigungsverluste oder Ausschwitzen bei der Verarbeitung stabilisierter Zusammensetzungen bei erhohten Temperaturen. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates against light-induced degradation and good resistance to volatilization or exudation during the processing of stabilized compositions at elevated temperatures.

Liquid mixtures of 2-(hydroxy-3-branched alkyl-5-methylphenyl)-2h-benzotriazole, process for their preparation and stabilized compositions containing them

Robert E. Detlefsen

Papers

Liquid 2-(2-hydroxy-3-higher branched alkyl-5-methyl-phenyl)-2H-benzotriazole mixtures, stabilized compositions and processes for preparing liquid mixtures

Liquid substituted 2H-benzotriazole mixtures, stabilized compositions

Liquid substituted 2H-benzotriazole mixtures, stabilized compositions and processes for preparing the liquid mixtures

Liquid substituted 2H-benzotriazole mixtures

Liquid mixtures of 2-(hydroxy-3-branched alkyl-5-methylphenyl)-2h-benzotriazole, process for their preparation and stabilized compositions containing them