LYOTROPIC LIQUID CRYSTALLINE COMPOUND AND ITS PRODUCTION

• Main Authors: YOO, JAE WON, CHUN, JI MIN, PARK, JONG HO, KIM, SU JEONG, HWANG, SEONG MIN, YOO, BYEONG HUI, NAM, CHUN JA, JUNG, SEONG WON, SIM, MIN GYEONG
• Format: Patent
• Language: English; Korean
• Published: 15.02.2001
• Edition: 7
• Subjects: ADHESIVES; CHEMISTRY; DYES; HUMAN NECESSITIES; HYGIENE; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS

PURPOSE: A new lyotropic liquid crystalline compound prepared by introducing polyethylene glycol or polyisopropylene glycol as a neutral hydrophilic group into between two equal alkyl groups to stabilize a liquid crystal structure, connecting the alkyl groups to polyethylene glycol or polyisopropylene glycol with an amide bond and introducing the alkyl groups as a factor for controlling liquid crystal forming capacity into a molecular structure is provided, which does not irritate the skin, continuously supplies moisture to the dry skin and prevents the skin from being damaged by external environment. CONSTITUTION: The process for producing a lyotropic liquid crystalline compound of formula (I) comprises the sequential steps of preparing an intermediate of formula (II) by dissolving o, o'-bis(2-(2-aminoethyl)propyl)polyisopropylglycol in dichloromethane or ethanol and reacting with a haloalkyl compound or haloepoxy compound; preparing a diamide-based compound by reacting alkali or an organic base with the obtained intermediate of formula (II) and fatty acid chloride containing 1 to 31C; and dissolving the obtained diamide compound in an organic solvent, filtering and recrystallizing. The cosmetics contain 0,001 to 30% by weight of the compound of the formula (I) based on the total weight of the composition.