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1. WO1998016193 - DISPERSION OF PARTICULATE TITANIUM DIOXIDE IN SILICONE

Publication Number WO/1998/016193
Publication Date 23.04.1998
International Application No. PCT/JP1997/002760
International Filing Date 07.08.1997
Chapter 2 Demand Filed 12.03.1998
IPC
A61K 8/29 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
19containing inorganic ingredients
29Titanium; Compounds thereof
A61K 8/58 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
30containing organic compounds
58containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
A61K 8/891 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
72containing organic macromolecular compounds
84obtained by reactions other than those involving only carbon-to-carbon unsaturated bonds
89Polysiloxanes
891saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
A61K 8/898 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
72containing organic macromolecular compounds
84obtained by reactions other than those involving only carbon-to-carbon unsaturated bonds
89Polysiloxanes
896containing atoms other than silicon, carbon, oxygen and hydrogen, e.g. dimethicone copolyol phosphate
898containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
A61Q 17/04 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
QSPECIFIC USE OF COSMETICS OR SIMILAR TOILET PREPARATIONS
17Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
04Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
CPC
A61K 2800/413
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
2800Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
40Chemical, physico-chemical or functional or structural properties of particular ingredients
41Particular ingredients further characterized by their size
413Nanosized, i.e. having sizes below 100 nm
A61K 8/29
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
19containing inorganic ingredients
29Titanium; Compounds thereof
A61K 8/585
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
30containing organic compounds
58containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
585Organosilicon compounds
A61K 8/891
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
72containing organic macromolecular compounds
84obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
89Polysiloxanes
891saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
A61K 8/894
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
KPREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8Cosmetics or similar toilet preparations
18characterised by the composition
72containing organic macromolecular compounds
84obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
89Polysiloxanes
891saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
894modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
A61Q 17/04
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
QSPECIFIC USE OF COSMETICS OR SIMILAR TOILET PREPARATIONS
17Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
04Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
Applicants
  • ISHIHARA SANGYO KAISHA, LTD. [JP]/[JP] (AllExceptUS)
  • FUTAMATA, Hideo [JP]/[JP] (UsOnly)
  • TAKAHASHI, Hideo [JP]/[JP] (UsOnly)
  • HATTORI, Masakazu [JP]/[JP] (UsOnly)
  • IIDA, Masanori [JP]/[JP] (UsOnly)
Inventors
  • FUTAMATA, Hideo
  • TAKAHASHI, Hideo
  • HATTORI, Masakazu
  • IIDA, Masanori
Agents
  • ASAMURA, Kiyoshi
Priority Data
8/28913211.10.1996JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DISPERSION OF PARTICULATE TITANIUM DIOXIDE IN SILICONE
(FR) DISPERSION DE DIOXYDE DE TITANE PARTICULAIRE DANS DU SILICONE
Abstract
(EN)
An attempt at blending a silicone-base cosmetic material with particulate titanium dioxide for imparting ultraviolet-screening properties to the material causes the agglomeration of particulate titanium dioxide and thus fails in exhibiting the transparency and ultraviolet-screening properties inherent in the titanium dioxide, because the surface of the particulate titanium dioxide is hydrophilic while silicone is highly hydrophobic, i.e., both components are incompatible with each other. The present invention provides a stable dispersion prepared by dispersing particulate titanium dioxide having a mean single particle diameter of 0.005 to 0.15 $g(m)m in a silicone medium by the use of a dispersant.
(FR)
Les tentatives destinées à mélanger une matière cosmétique à base de silicone avec du dioxyde de titane particulaire, pour conférer des propriétés de barrage des ultraviolets à ladite matière, provoquent l'agglomération du dioxyde de titane particulaire et empêchent donc ladite matière de présenter les propriétés de transparence et de barrage des ultraviolets inhérentes au dioxyde de titane, parce que la surface du dioxyde de titane particulaire est hydrophile, tandis que le silicone est fortement hydrophobe, c'est-à-dire que ces deux constituants sont incompatibles l'un avec l'autre. La présente invention concerne donc une dispersion stable préparée par dispersion de dioxyde de titane particulaire dont le diamètre moyen unique des particules va de 0,005 à 0,15 $g(m)m dans un milieu de silicone à l'aide d'un dispersant.
Also published as
Latest bibliographic data on file with the International Bureau