| 摘要 |
#CMT# #/CMT# A nail varnish composition containing, in organic solvent, a combination of (a) a polycondensate derived from polyol, non-aromatic monocarboxylic acid, aromatic monocarboxylic acid and polycarboxylic acid and (b) a polyoxyalkylene block copolymer. #CMT# : #/CMT# Nail varnish composition (NVC) containing, in organic solvent, (a) a polycondensate obtained by reacting (a1) 15-30 wt.% polyol(s) with 3-6 OH groups, (a2) 5-40 wt.% non-aromatic 6-32C monocarboxylic acid (saturated or unsaturated, linear, branched or cyclic), (a3) 10-55 wt.% aromatic 7-11C monocarboxylic acid (optionally substituted with up to 3 1-32C alkyl or cycloalkyl groups) and (a4) 10-25 wt.% polycarboxylic acid with at least 2 (preferably 2-4) COOH groups (saturated or unsaturated, aromatic, linear, branched or cyclic) and/or a cyclic anhydride thereof, and (b) polyoxyalkylene block copolymer(s) selected from (b1) polymers of formula (I). HO(CH 2CH 2O) n-(C xH 2xO) m-(CH 2CH 2O) p-H (I) n, m, p : 1-1000; x : more than 2 and not more than 10 and (b2) copolymers with a molecular weight (MW) of at least 1000 g/mol containing at least one polyethylene glycol block and at least one polypropylene glycol block. Independent claims are also included for: (1) a cosmetic method for make-up or non-therapeutic care, involving the application of at least one coat of NVC to the nails; and (2) a cosmetic set with a closed compartment containing the NVC. #CMT#USE : #/CMT# For the production of a glossy film of varnish on the nails (claimed). #CMT#ADVANTAGE : #/CMT# The combination of a modified alkyd-type polycondensate and a polyoxyalkylene block copolymer enables the production of nail varnish which shows good stability and good homogeneity of color over time and forms a very glossy, high-quality coating on the nails. #CMT#ORGANIC CHEMISTRY : #/CMT# Preferred Composition: NVC in which the polyol (a1) has 3-4 OH groups, preferably a 4-10C polyol with 3-6 OH groups, especially glycerol, pentaerythritol and/or sorbitol, more especially pentaerythritol; this represents 16-28 (preferably 18-25) wt.% of the polycondensate (a). Component (a2) has the formula RCOOH in whichR= 5-31C (preferably 11-17C) hydrocarbyl, preferably saturated and linear or branched, preferably with 5-31C ; preferred acids of this type are 2-ethylhexanoic, iso-octanoic, lauric, palmitic and/or isostearic acid, especially isostearic acid alone, in amounts of 8-38 (preferably 10-35) wt.% of (a). Component (a3) has the formula R~COOH in whichR~= 6-10C aryl, especially phenyl or naphthyl (optionally substituted as above) , especially benzoic, o-toluic, m-toluic and/or 1-naphthoic acid, preferably benzoic acid only, in amounts of 20-52 (preferably 25-50) wt.%. Component (a4) comprises 2-20C (preferably 4-10C) polycarboxylic acids with 2-4 COOH groups, preferably 4-12C saturated linear aliphatic acids, 8-12C aromatic acids or cyclic anhydrides of the formulae (X1) or (X2),in whichA, B= H or 1-16C (preferably 4-8C) hydrocarbyl, especially methyl or ethyl, or A and B together may form a 5- to 7-membered ring, especially a 6C aromatic ring ; preferred (a4) is phthalic anhydride and/or isophthalic acid, preferably isophthalic acid only, in amounts of 11-22 (preferably 12-20) wt.%. Component (a) may also contain a hydroxy- and/or carboxy-functional silicone with a weight-average MW (M w) of 300-20000, preferably 800-4000, preferably with OH at both ends or COOH at both ends, especially an alpha ,omega -dihydroxy-polydimethylsiloxane with an M w of 800-4000, in amounts of 0.1-15 (preferably 2-8) wt.%. The mol ratio of (a3):(a2)= 1.2-8, preferably 1.9-7. The polycondensate (a) shows an acid number of at least 8 (preferably 10-30) mg KOH/g, an OH number of at least 30 (preferably 40-90) mg KOH/g, a viscosity of 75-6000 (preferably 200-4800) mPa.s at 110[deg] C, a solubility of at least 50 wt.% in butyl or ethyl acetate at 25[deg] C and a solution viscosity (70 wt.% in BuOAc or EtOAc at 25[deg] C) of 100-1500 (preferably 120-900) mPa.s. Component (a) is present in the NVC in amounts of 0.5-50 (preferably 5-20) wt.% based on dry substance. Component (b) is a block copolymer of formula HO(CH 2CH 2O) n-(C xH 2xO) m-H in which n, m : 1-1000; x : more than 2 and not more than 10 , present in amounts of 0.1-15 (preferably 1-8) wt.%. Preferred solvents comprise liquid ketones (e.g. MEK, MIBK, di-isobutyl ketone, isophorone, cyclohexanone or acetone), alcohols (ethanol, isopropanol, diacetone alcohol, 2-butoxyethanol or cyclohexanol), propylene glycol ethers (e.g. PPG monomethyl ether and its acetate, dipropylene glycol mono-n-butyl ether), cyclic esters (e.g. butyrolactone), 3-8C esters (e.g. methyl to isopentyl acetates, methoxypropyl acetate or butyl lactate), ethers (dimethyl, diethyl or dichlorodiethyl ether), alkanes (decane, heptane, dodecane, cyclohexane), alkyl sulfoxides (e.g. DMSO), aldehydes (acetaldehyde, benzaldehyde), ethyl 3-ethoxypropionate, carbonates (propylene carbonate, dimethyl carbonate) and/or acetals (e.g. methylal), present in amounts of 10-95 (preferably 60-80) wt.%. Other components may include (c) thickeners (preferably hydrophobic silica, clays such as montmorillonite, modified clays such as bentonite, or polysaccharide alkyl ethers), in amounts of 0.01-15 (preferably 0.1-5) wt.%, (d) film-forming polymers in amounts of 0.1-60 (preferably 5-30) wt.% based on dry substance and (e) coloring materials in amounts of 0.01-50 (preferably 0.01-30) wt.%. #CMT#[Image]#/CMT# #CMT#EXAMPLE : #/CMT# A mixture of 227.5 g benzoic acid, 72.8 g isostearic acid and 118.3 g pentaerythritol was heated at 110-130[deg] C to give a clear solution, heated gradually to 180[deg] C, kept at 180[deg] C for 2 hours, heated to 220[deg] C, kept at 220[deg] C until the acid number was less than 1 (18 hours), cooled to 100-130[deg] C, treated with 91 g isophthalic acid and heated over 11 hours to 220[deg] C; this gave 430 g pentaerythrityl benzoate/isophthalate/isostearate polycondensate (P1) as a viscous oil which solidified at room temperature. The product (P1) showed an acid number of 12.7, an OH number of 49 and a viscosity of 2540 mPa.s at 110[deg] C. A 70% solution of P1 with a viscosity of 800 mPa.s at 25[deg] C was obtained by dissolving 420 g P1 in 180 g butyl acetate at 100-120[deg] C. A nail varnish (NVC3) was obtained by mixing 17.6 wt.% P1 (based on dry substance in the solution) with 13.9 wt.% Idyl EMV (RTM: nitrocellulose; 30% in IPA), 1.74 wt.% Idyl E27 (RTM: nitrocellulose; 30%), 0.175 wt.% acetone-formaldehyde resin, 1.97 wt.% Uniplex 670-P (RTM: adipic acid/trimellitic anhydride/neopentyl glycol copolymer; 70% in BuOAc), 3.67 wt.% tributyl acetyl-citrate, 2.61 wt.% epoxy-toluenesulfonamide resin (25% in BuOAc), 0.65 wt.% stearylbenzyldimethylammonium-modified hectorite, 1.74 wt.% N-ethyl-o,p-toluenesulfonamide, 2.95 wt.% Synperonic PE/L64 (RTM: EO/PO/EO copolymer) (P2), 0.2 wt.% Varnish Red 7, 0.02 wt.% polyethylene-coated titanium dioxide, 0.55 wt.% Varnish Red 34, 0.87 wt.% n-butanol, 13 wt.% n-propyl acetate, 0.25 wt.% isopropanol, 0.028 wt.% citric acid monohydrate, 20.9 wt.% ethyl acetate and butyl acetate (q.s. 100 wt.%). This varnish was applied to a black/white contrast card in a wet film thickness of 300 microns and dried for 24 hours at 30[deg] C. The dry varnish coating showed a 60[deg] gloss value of 90.5 on the black and white sections of the card, compared with 84.9 for a prior-art varnish without the combination of P1 and P2 (this contained, instead of P1, a glycerophthalic alkyd resin esterified with branched fatty acids [ Cardura 30 (RTM)], and no block copolymer P2). |
