ALPHA-GEL-INTERMEDIATE COMPOSITION, AND PRODUCTION METHOD FOR ALPHA-GEL-CONTAINING O/W EMULSION COSMETIC USING SAID COMPOSITION

• Main Authors: MIYAHARA, Reiji, Miyakawa, Makiyo, YONEZAWA, Tetsuro
• Format: Patent
• Language: English; French; German
• Published: 19.04.2017
• Subjects: HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS

The present invention provides an intermediate composition enabling to prepare easily and steadily an ±-gel-containing O/W emulsion cosmetic that has a very small viscosity change over time and is excellent in emulsion stability, without using a cooling device that has a heavy burden on cost and the environment, and a production method thereof. An ±-gel intermediate composition consisting of (A) 20 to 80 mass% of a mixture containing one or more higher alcohols having 16 or more carbon atoms and a nonionic surfactant with an HLB value of 7 to 17 in the mole ratio of 3:2 to 5:1, and (B) 20 to 80 mass% of a mixture containing one or more water-soluble solvents having the IOB value of 1.5 to 3.5 and water in the mass ratio of 4:6 to 8:2, and wherein the composition is a liquid consisting of a bicontinuous microemulsion phase or a lamellar liquid crystal-dispersed bicontinuous microemulsion phase at 50 to 80 °C and a solid at room temperature.