发明名称 |
Crystal modifications of transmission dyes |
摘要 |
Disclosed is the use of an aqueous dispersion comprising (a) a micronized sparingly soluble organic benzophenone derivative of formula (1), selected from the crystal modifications (B) and (C), wherein the crystal modification (B) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.70; and wherein the crystal modification (C) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.06; and (b) a dispersing agent selected from anionic, non-ionic and amphoteric surfactants; for protecting the human skin from browning and skin aging. The new crystal modification (C) represents a thermodynamically stable compound of formula (1) at 25° C. This modification is therefore suitable in dispersions comprising micro-fine particles.
|
申请公布号 |
US8557820(B2) |
申请公布日期 |
2013.10.15 |
申请号 |
US20080597930 |
申请日期 |
2008.04.28 |
申请人 |
VOGT MARTIN;MUELLER STEFAN;GRUMELARD JULIE;DESHAYES CYRILLE;PAUL HOLGER;HAASE JUERG;EHLIS THOMAS;BASF SE |
发明人 |
VOGT MARTIN;MUELLER STEFAN;GRUMELARD JULIE;DESHAYES CYRILLE;PAUL HOLGER;HAASE JUERG;EHLIS THOMAS |
分类号 |
A61K31/497;A61K8/00;A61Q17/04;C07D241/04;C07D295/00 |
主分类号 |
A61K31/497 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|