レオロジー調整剤・増粘剤

パーソナルケア向けレオロジー調整剤は、配合物の粘度、降伏値、流動性を設計し、懸濁性、伸び広がり、安定性を確保する原料です。 これらは、低添加量で透明性と高い降伏値を与える合成架橋ポリアクリレート（carbomer類、acrylate crosspolymer類）と、より広いpH・電解質範囲で増粘する天然または半合成のハイドロコロイド（xanthan gum、hydroxyethylcellulose）の2つの機能区分に分かれます。多くの系では両者を1点ずつ組み合わせます。

Carbomers thicken efficiently u2014 typically 0.1 to 1% u2014 and give the sparkling gels used in serums, but they must be neutralized to roughly pH 5.5 to 7 to develop viscosity. The honest trade-off: the clarity and yield value that make carbomers ideal for clear gels are the same properties that make them lose viscosity in high-electrolyte or low-pH systems. Where a formula carries surfactants or salts, specify a hydrophobically modified acrylate crosspolymer or a hydrocolloid instead.

Xanthan gum and hydroxyethylcellulose are pH- and electrolyte-tolerant thickeners for surfactant systems and natural-positioned formulas; xanthan also suspends particles and helps stabilize emulsions. Behenyl alcohol is a fatty-alcohol consistency factor that builds body in the oil phase of creams. Pair a primary polymeric thickener with a consistency factor rather than over-dosing a single ingredient.

• 透明な水系ジェルおよび美容液（carbomer、acrylate crosspolymer）
• ローション・クリームの増粘と乳化安定化
• Surfactant-system thickening for shampoos and body washes (HEC, xanthan gum)
• 液体処方における粒子および顔料の懸濁安定化
• ハイドロコロイドが求められるナチュラル訴求の増粘

• Carbomer / polyacrylic acid u2014 PubChem
• Xanthan gum u2014 PubChem
• Hydroxyethylcellulose u2014 PubChem
• Behenyl alcohol u2014 PubChem