NATURAL RUBBER PARTICLE AND METHOD FOR PRODUCING THE SAME, AND COSMETIC

To achieve highly elastic substitute materials for silicone beads and polyurethane beads by using natural rubber having high elasticity and good biodegradability.SOLUTION: Natural rubber particles have an average particle size d1 of 0.01-20 μm, a maximum particle diameter d2 that is up to three time...

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Bibliographische Detailangaben
Hauptverfasser:	ENOMOTO NAOYUKI, HAMAZAKI YUICHI, SHIMAZAKI IKUKO, TSUKAMOTO SAKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
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Beschreibung
Zusammenfassung:	To achieve highly elastic substitute materials for silicone beads and polyurethane beads by using natural rubber having high elasticity and good biodegradability.SOLUTION: Natural rubber particles have an average particle size d1 of 0.01-20 μm, a maximum particle diameter d2 that is up to three times d1, a CV value of less than 40%, a sphericity of 0.80 or more and a glass transition temperature of -53 to 10°C.SELECTED DRAWING: None 【課題】高い弾性と良好な生分解性を持つ天然ゴムを用いて、弾性の高いシリコーンビーズやポリウレタンビーズの代替材料を実現する。【解決手段】本発明の天然ゴム粒子は、平均粒子径ｄ１が０．０１～２０μｍ、最大粒子径ｄ２がｄ１の３倍以内、ＣＶ値が４０％未満、真球度が０．８０以上、硝子転移温度が－５３～１０℃である。【選択図】なし