Use of sunscreen combinations comprising, as essential constituent, amino-substituted hydroxybenzophenones as photostable UV filters in cosmetic and pharmaceutical preparations

    公开(公告)号:AU2800301A

    公开(公告)日:2001-09-20

    申请号:AU2800301

    申请日:2001-03-14

    Applicant: BASF AG

    Abstract: A photostable ultraviolet (UV) filter for protecting human skin or hair against sunlight contains as UV-A absorbing components a combination of a hydroxybenzophenone (I), optionally together with a 4,4-diaryl-butadiene (II); and other UV protectant(s) i.e. dibenzoylmethane, triazine, benzotriazole, benzimidazole, tetrahydroxybenzophenone and/or organosiloxane-benzal malonate derivatives. Use of a light-protectant combination of a UV-A absorber and further UV-A and/or UV-B absorbers is claimed as a photostable UV-filter in cosmetic or pharmaceutical preparations for protecting human skin or hair against sunlight, optionally used together with other conventional light protectants. First UV light absorber is a hydroxybenzophenone of formula (I), optionally together with a 4,4-diaryl-butadiene of formula (II); and other UV protectants including 4-(R6)-4'-(R7)-dibenzoylmethane, 1,3,5-triazine derivatives of formula (III), 2,4,6-triphenyl-1,3,5-triazines, in which the phenyl rings are bonded with at least one o-hydroxy group and at least one p-(1-20C) alkoxy group, 2,2'-dihydroxy-3,3'-bis-(1,2,3-benzotriazol-2-yl)-5,5'-bis-(1,1,3,3-te tramethylbutyl)-diphenylmethane, 1,4-bis-(5,6-disulfo-benzimidazol-2-yl)-benzene or its salts, 2-(2-hydroxy-3-(2-methyl-4,4-bis-(trimethylsilyloxy)-4-silapentyl)-5-m ethyl)-1,2,3-benzotriazole, 2,2',4,4'-tetrahydroxybenzophenone and/or siloxanes of formula (IV). R1, R2 = H, 1-20C alkyl, 3-10C cycloalkyl or 3-10C cycloalkenyl; or NR1R2 = 5-6 membered ring; R3 = 1-20C alkyl; R4, R5 = H, 1-20C alkyl, 3-10C cycloalkyl or 3-10C cycloalkenyl; R6 = 1-12C alkyl; R7 = H, 1-12C alkyl or 1-12C alkoxy; R8-R10 = optionally substituted 1-20C alkyl, 5-10C aryl, 5-10C heteroaryl or -Sp-Sil; Sp = spacer; Sil = silane, oligosilane or polysiloxane residue; X = O or NR11; R11 = H or optionally substituted 1-20C alkyl, 5-10C aryl, 5-10C heteroaryl; V = 3-(4-(2,2-bis-(ethoxycarbonyl)-vinyl)-phenoxy)-prop-1-en-1-yl or 3-(4-(2,2-bis-(ethoxycarbonyl)-vinyl)-phenoxy)-prop-1-en-2-yl; V' = V or Me; t = up to 100; u = up to 20; provided that u = 0 if V' = V or u = 1-20 if V' = Me. An Independent claim is also included for cosmetic or pharmaceutical preparations for protecting human epidermis or hair against UV light in the 280-400 nm range, comprising the UV absorbing combination, a carrier and optionally other conventional light protectants.

    PROCESS FOR THE ACID DIGESTION OF METAL-CONTAINING COMPOUNDS

    公开(公告)号:CA2644671A1

    公开(公告)日:2007-09-07

    申请号:CA2644671

    申请日:2007-02-28

    Applicant: BASF AG

    Abstract: Aqueous leachant compositions and processes for using the same comprising: (a) providing a metal-containing compound; and (b) subjecting the metal-containing compound to an acid digestion comprising contacting the metal-containing compound with an aqueous leachant; wherein the aqueous leachant comprises a mixture selected from the group consisting of: (i) sulfuric acid and one or more alkanesulfonic acids having alkane moieties selected from the group consisting of propyl, ethyl and methyl groups, at a weight ratio of alkanesulfonic acid to sulfuric acid of 1:1000 to 1:1; (ii) sulfuric acid and one or more salts of alkanesulfonic acids having alkane moieties selected from the group consisting of propyl, ethyl and methyl groups, at a weight ratio of salt of alkanesulfonic acid to sulfuric acid of 1:9 to 1:99.

    Treating metal surfaces with two polymers, useful e.g. for temporary corrosion protection, one based on heterocylic monomer containing nitrogen and the other containing acid groups

    公开(公告)号:DE102005015478A1

    公开(公告)日:2006-10-05

    申请号:DE102005015478

    申请日:2005-04-04

    Applicant: BASF AG

    Abstract: Method for treating a metal surface (S) with a formulation (F) containing at least water (or an aqueous solvent mixture) and at least two different polymers (A) and (B). Method for treating a metal surface (S) with a formulation (F) containing at least water (or an aqueous solvent mixture) and at least two different polymers (A) and (B). (A) comprises, by weight, 50-100% monoethylenically unsaturated monomer (A1) that includes a 5-7 membered N-heterocycle with 1-3 N atoms and/or its salt, and 0-50% a second, different ethylenically unsaturated monomer (A2). (B) comprises, by weight, 50-95% monoethylenically unsaturated hydrocarbon (B1); 5-50% monoethylenically unsaturated monomer (B2) containing acid (or its anhydride or salt) groups; and 0-10% of a different ethylenically unsaturated monomer (B3). The total of (A) and (B) is at least 70wt.% of the total formulation (free of water or solvent mixture). An independent claim is included for a metal surface coated with (F).

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