Abstract:
PURPOSE: A nanocapsule comprising a water-dispersive anionic polymer which effectively protects an active ingredient and makes a manufacturing process of the nanocapsule easy, a method for preparing thereof and a cosmetics or a dermatological composition containing thereof are provided. CONSTITUTION: A nanocapsule comprises: (a) a lipidic core which forms or contains a lipophilic active component; and (b) a water-insoluble, continued polymer envelope, wherein the polymer envelope contains at least one synthetic water-dispersive anionic polymer which is selected from the group consisting of polyester containing a functional group of carboxylic acid and/or sulfonic acid, poly(ester amide), polyurethane and vinyl copolymer and/or a natural water-dispersive anionic polymer which is selected from the group consisting of shellac resin, sandarac gum and dammar resin. The cosmetics or dermatological composition include the nanocapsule in physiologically acceptable carrier. The nanocapsule is prepared by: (i) dissolving a lipidic phase which forms or contains the lipophilic active component and a selective coating agent in an adequate, non-toxic organic solvent having lower boiling point than water; (ii) preparing an aqueous dispersed solution of the water-dispersive anionic polymer; (iii) adding a hydrophilic surfactant to the aqueous dispersed solution of the anionic polymer; (iv) mixing the organic phase prepared from the step (i) with the aqueous phase prepared from the step (iii); and (v) preparing a condensed nanocapsule suspension by evaporating all organic phases and possible, a little aqueous phase.
Abstract:
PURPOSE: Provided are a composition comprising a compound of low solubility and a lipophilic amino acid derivative, the use thereof, and a method for dissolving a compound of low solubility. CONSTITUTION: Cosmetic and dermatological compositions, comprise a compound of low solubility and a lipophilic amino acid derivative, especially an amino acid ester of the formula: R'1(CO)N(R'2)CH(R'3)(CH2)n(CO)OR'4, in a physiologically-acceptable medium, wherein n = 0, 1, or 2; R'1 = 5 - 21C alkyl or alkenyl; R'2 = H or 1-3C alkyl; R'3 = H, or 1-4C alkyl; and R'4 = 1-10C alkyl, 2-10C alkenyl, or a sterol residue.
Abstract:
본발명은다음의구조로이루어지는나노캡슐에관한것이다. 또한, 본발명은 a) 친지성의활성성분을형성하거나함유하는지질중심; 및 b) 물에대하여불용성인연속된폴리머포락선(envelope) ―여기서폴리머포락선은아디프산에서유도되는단위및 하나또는그 이상의알칸디올및/또는하나또는그 이상의에테르-디올및/또는하나또는그 이상의트리올에서유도되는단위를포함하는폴리(알킬렌아디페이트) 유형의직쇄또는분지쇄폴리에스테르를적어도하나포함함―으로이루어지는나노캡슐의제조방법및 이들을함유하는화장품및/또는피부과용조성물에관한것이다.
Abstract:
본 발명은 적어도 1종의 저용해도 화합물을 물에 용해하는 방법에 관한 것으로서, 상기 방법은 상기 저용해도 화합물과 적어도 1종의 친지성 아미노산 유도체를 혼합하는 필수 단계를 포함한다. 본 발명은 또한 생리적으로 허용 가능한 매질 내에 적어도 1종의 저용해도 화합물 및 적어도 1종의 친지성 아미노산 유도체를 포함하는 화장품 또는 피부과용 조성물에 관한 것이다. 보다 구체적인 저용해도 화합물 중에는 아미노페놀 유도체, 살리실산 유도체, 2-아미노-4-알킬아미노피리미딘 3-옥사이드 유도체 및 DHEA, 그리고 그의 화학적 또는 대사적 유도체 및 전구체가 포함된다. 저용해도 화합물, 친지성 아미노산 유도체, 화장품, 피부과용 조성물, 아미노페놀 유도체, DHEA, 살리실산 유도체
Abstract:
Nanocapsules comprising the following components are new: (a) a lipid core comprising a lipophilic active ingredient (I); and (b) a water-insoluble shell comprising a water-dispersible anionic polymer (II) selected from polyesters, poly(ester amides), polyurethanes, vinyl copolymers, shellac, sandarac gum and dammars. Independent claims are also included for the following: (1) a cosmetic or dermatological composition containing the nanocapsules in a carrier; (2) a process for producing the nanocapsules, comprising: (i) dissolving a lipid phase comprising (I) and optionally a coating agent in a nontoxic organic solvent having a lower boiling point than water; (ii) preparing an aqueous dispersion of (II); (iii) adding a hydrophilic surfactant to the dispersion; (iv) combining the organic phase of (i) with the organic phase of (iii); and (v) evaporating the organic solvent and optionally part of the aqueous phase; (3) a process for producing the nanocapsules, comprising: (i) dissolving (II), a lipid phase comprising (I) and optionally a coating agent in a water-miscible organic solvent; (ii) pouring the solution into an aqueous surfactant solution; and (iii) evaporating the organic solvent and optionally part of the aqueous phase.
Abstract:
PURPOSE: A nanocapsule comprising poly(alkylene adipate) which effectively protects an active ingredient and makes a manufacturing process of the nanocapsule easy, a method for preparing thereof and a cosmetics or a dermatological composition containing thereof are provided. CONSTITUTION: A nanocapsule comprises: (a) a lipidic core which forms or contains a lipophilic active component; and (b) a water-insoluble, continued polymer envelope, wherein the polymer envelope contains at least one linear or branched polyester of poly(alkylene adipate) including an unit derived from an adipic acid and an unit derived from more than one alkane-diol and/or more than one ether-diol and/or more than one triol. The cosmetics or dermatological composition include the nanocapsule of poly(alkylene adipate) in physiologically acceptable carrier. The nanocapsule is prepared by: (i) dissolving poly(alkylene adipate), lipidic phase which forms or contains lipophilic active component and an optional coating agent in an adequate, water-miscible organic solvent; (ii) preparing an aqueous solution of an adequate surfactant; (iii) adding the organic phase prepared from the step (i) to the aqueous phase prepared from the step (ii) with stirring at a proper speed; and (iv) evaporating all organic phases and possible, a little aqueous phase.