POLYMER COMPOSITE PARTICLES CONTAINING LARGE AMOUNT OF ORGANIC UV BLOCKING AGENT AND METHOD FOR PREPARING SAME

• Main Authors: LEE, Sung Ho, YOON, Yang Bae, PARK, Jang Ho, SEONG, Deuk Yong
• Format: Patent
• Language: English; French; Korean
• Published: 05.10.2017
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present invention relates to polymer composite particles containing a large amount of an organic UV blocking agent and a method for preparing same, and more particularly, to spherical polymer composite particles in which a solid phase organic UV blocking agent is inserted between polymer matrices at 40 to 50 wt%. The polymer composite particles of the present invention include a significantly large amount of the organic UV blocking agent when compared to polymer composite particles, has excellent light stability, despite including the large amount of the organic UV blocking agent, has superior UV blocking ability with respect to a UV-B region as well as a UV-A region, provides highly favorable skin stability and texture when applied to cosmetics, and can improve the UV blocking ability significantly. La présente invention concerne des particules composites de polymère contenant une grande quantité d'un agent de blocage UV organique et un procédé de préparation de celles-ci et, plus particulièrement, des particules composites de polymère sphériques dans lesquelles un agent de blocage UV organique en phase solide est inséré entre des matrices de polymère à 40 à 50 % en poids. Les particules composites de polymère de la présente invention comprennent une quantité significativement élevée de l'agent de blocage UV organique par rapport aux particules composites polymères, présentent une excellente stabilité à la lumière, malgré l'inclusion de la grande quantité de l'agent de blocage UV organique, présentent une capacité de blocage UV supérieure pour une région UV-B ainsi qu'une région UV-A, confèrent une stabilité et une texture de la peau très favorables lorsqu'elles sont appliquées à des produits cosmétiques, et peuvent significativement améliorer la capacité de blocage UV. 본 발명은 다량의 유기계 자외선 차단제를 함유하는 고분자 복합입자 및 그의 제조방법에 관한 것으로, 특히 고체상의 유기계 자외선 차단제가 고분자 매트릭스 사이에 40 내지 50 중량% 끼워진 구형의 고분자 복합입자로서, 종래의 고분자 복합입자에 비하여 현저히 다량의 유기계 자외선 차단제를 포함하며, 다량의 유기계 자외선 차단제를 포함에도 불구하고 광안정성이 뛰어나며, UV-A 영역뿐만 아니라 동시에 UV-B 영역 대한 자외선 차단성능이 뛰어나며, 화장품에 적용시 피부안정성 및 사용감이 매우 우수하며, 자외선 차단성능을 현저히 향상시킬 수 있는 고분자 복합입자 및 그의 제조방법에 관한 것이다.