COMPOSITION OF SOLAR FILTER, CONCENTRATED DISPERSION, METHOD FOR FORMULATING A COMPOSITION OF SOLAR FILTER, AND USE OF THE DISTRIBUTION OF ZINC OXIDE PARTICLES

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专利权人:

BASF SE

发明人:

Marc N.G. De Mul,Tatiana Drovetskaya

申请号：

BR112014028237

公开号：

BR112014028237B1

申请日:

2013.05.14

申请国别(地区):

BR

年份:

2020

代理人:

摘要：

1/1 summary “composition of sunscreen, concentrated dispersion, method to formulate a sunscreen composition, and use of the distribution of zinc oxide particles” to the present description refers to zinc oxide powders coated with polymeric siloxane having an average particle size number distribution (d50) ranging from about 300 nm to about 600 nm and its use in sunscreen compositions. the relatively high surface area (in relation to particles of <；100 nm) avoids agglomeration resulting in the ease of formulation and high dispersion of the particles that tend to less scatter the light and, consequently, better transparency in formulations. in addition, the combination of the distribution of the average particle size number (d50) of zinc oxide varying as above with uv bis absorbing agents (resorcinil) triazine shows increased and unexpected absorbance of uv-a (320 to 400 nm) compared to zinc oxide and uv absorption agents bis resorcinyl triazine on its own and in the same concentration ão.1 / 1 resumo “composiã‡ãƒo de filtro solar, dispersãƒo concentrada, mã‰todo para formular uma composiã‡ãƒo de filtro solar, e, uso da distribuiã‡ãƒo das partã�culas de ã“xido de zincoâ€� a presente descriã§ã£o refere-se a pã³s de ã³xido de zinco revestidos com siloxano polimã©rico tendo uma distribuiã§ã£o do nãºmero de tamanho mã©dio das partã­culas (d50) variando de cerca de 300 nm a cerca de 600 nm e o seu uso em composiã§ãµes de filtro solar. a ã¡rea de superfã­cie relativamente alta (em relaã§ã£o a partã­culas de <；100 nm) evita aglomeraã§ã£o resultando na facilidade de formulaã§ã£o e alta dispersã£o das partã­culas que tendem a um menor espalhamento da luz e, consequentemente, uma melhor transparãªncia em formulaã§ãµes. alã©m disso, a combinaã§ã£o da distribuiã§ã£o do nãºmero de tamanho mã©dio das partã­culas (d50) de ã³xido de zinco variando como acima com agentes de absorã§ã£o de uv bis(resorcinil)triazina mostra absorbã¢ncia de uv-a aumentada e inesperada (320 a 400 nm)

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中国工程科技知识中心

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