LEE, SUNG HO,이성호,CHOI, BOU KUN,최부건,PARK, JIN KWAN,박진관,BAEG, DAE SUNG,백대성,JUN, YOUNG SUN,전영선
申请号：
KR1020120028106
公开号：
KR1020130106517A
申请日:
2012.03.20
申请国别(地区):
KR
年份:
2013
代理人:
摘要：
PURPOSE: Titanium dioxide powder is provided to block ultraviolet A and B at the same time, and to remove the harmfulness to human body by removing titanium dioxide with the particle diameter smaller than 100 nm.CONSTITUTION: A production method of titanium dioxide powder comprises the following steps: mixing 1 part by weight of titanium dioxide powder with the single particle diameter of 5-300 nm with 5-50 parts by weight of water and 5-50 parts by weight of alcohol to obtain a reactant stirring the reactant with 0.01-0.5 parts by weight of polymer coagulant adjusting the pH of the reactant from the previous step into 10-12, and increasing the reaction temperature of the reactant to 55°C before stirring adding 0.1-10 parts by weight of silicon alkoxide to the reactant from the previous step, and increasing the temperature to 60-65°C before stirring coating the reactant from the previous step and dehydrating and drying the reactant from the previous step, and removing titanium dioxide particles with the particle diameter smaller than 100 nm.COPYRIGHT KIPO 2013본 발명은 이산화티탄 분말 및 이의 제조방법에 관한 것으로, 본 발명에 따른 이산화티탄 분말은 단일입자의 입자직경이 100 nm를 초과하기 때문에 입자크기로 인한 인체 유해성에 대한 우려가 없으면서도 이산화티탄 분말을 다량 함유하여, 자외선 B 영역뿐 아니라 자외선 A 영역에 까지 광범위한 자외선 차단 영역을 가지며, 또한 종래 나노 크기의 초미립자 이산화티탄에 비해 현저히 개선된 사용감을 나타내어, 자외선 차단을 위한 용도로 사용되는 화장료에 유용하게 사용될 수 있다.
