Isobutyl Polysilsesquioxane is a resinous material composed of a mixture of three-dimensional siloxane polymers and oligomers with cage structures.
定義
Isobutyl Polysilsesquioxane is a resinous material composed of a mixture of three-dimensional siloxane polymers and oligomers with cage structures. For the oligomers, each silicon atom in the polysilsesquioxane is connected via oxygen atoms to three other silicon atoms and can be represented by the empirical formulation RSiO3/2 where R represents the isobutyl group. For the larger polymeric polysilsesquioxanes, some of the silicon atoms are not connected to other silicon atoms and instead have a silanol (SiOH) group. Isobutyl Polysilsesquioxane is prepared by the hydrolysis and condensation of 2-methylpropyl trimethoxysilane.
化粧品での役割
安全性・規制情報
Reviewed by CIR: Final Report: Safety Assessment of Polysilsesquioxanes as Used in Cosmetics
出典: 米国CIR 安全性評価
詳しい資料 — 表示名・識別番号・物性・試験記録・文献
別名・識別情報
- CAS No.化学物質登録番号
- 221326-46-1
- DTXSID米国EPA化学物質番号
- DTXSID40944777
- DTXCID米国EPA化合物番号
- DTXCID801373109
- IUPAC
- 1,3,5,7,9,11,13,15-Octakis(2-methylpropyl)pentacyclo[9.5.1.1~3,9~.1~5,15~.1~7,13~]octasiloxane
- 分子式
- C32H72O12Si8
- 分子量
- 873.596 g/mol
製品が実際に使っている用途
米国EPAにこの成分を届け出た製品1件の用途です。化粧品以外の製品も含まれるため、上の数行がこの成分の主な使い道といえます。
- Softener and conditioner1
出典: 米国EPA CompTox