一種便于使用的流變改性劑，給肌膚帶來優(yōu)雅的柔軟感覺
制備過程
一般來說，在生產(chǎn)周期的任何可行的階段，在配方的油相中最相容的非極性組分中添加Bentone Gel PTISV。不需要加熱或高壓均質(zhì)。然而，為了保證均勻性，必須克服它與流體成分之間存在的較大粘度差。我們建議使用中到高剪切混合設(shè)備，如Dispermat 分散機，以便在油相中適當(dāng)分散Bentone Gel®，并在繼續(xù)下一步加工步驟(如乳化或添加后續(xù)成分)之前達(dá)到均勻性。當(dāng)“一鍋加工”是不可能的，你可以簡單地準(zhǔn)備一個預(yù)混合的Bentone Gel與相容的油(s)在側(cè)容器。其剪切變薄流變學(xué)允許容易地轉(zhuǎn)移到主混合容器。在只有較低剪切混合設(shè)備的情況下，首先攪拌Bentone Gel，然后慢慢加入最相容的組分，始終確?；旌衔镌诿總€階段保持均勻。一項預(yù)防措施是必要的，那就是避免長時間的層流。
季戊四醇四異硬脂酸鹽有助于顏料的分散，并提供了一個優(yōu)雅的潤膚膜。從代表所有原型生成的流變圖可以看出，Bentone Gel®PTIS V將其流變特性賦予了最終的配方。因為增加的屈服應(yīng)力,organoclay有效穩(wěn)定的顏料懸浮液(圖8)。
Bentone Gel PTIS V睫毛膏的流動曲線顯示低剪切粘度和觸變性增加，應(yīng)用性能增強(見圖9)。
下圖(圖11)顯示，在24℃的室溫下，僅僅幾周后，無有機粘土的睫毛膏就已經(jīng)發(fā)生了強烈的相分離，而含有膨潤土凝膠PTIS V的睫毛膏在我們的穩(wěn)定性研究方案中始終保持粘性和穩(wěn)定性。
an Easy-to-use Rheology Modifier that Brings an Elegant Cushiony Feel to the Skin
Processing
In general, one adds Bentone Gel PTISV to the most compatible non-polar components of the oil phase of a formulation at any convenient stage during the manufacturing cycle. There is no heat or high-pressure homogenization required. However, to assure homogeneity, one must overcome the large viscosity differential existing between it and components that are more fluid. We recommend the use of medium to high-shear mixing equipment, such as a Dispermat impeller, in order to properly disperse Bentone Gel® in the oil phase and reach homogeneity before continuing to the next processing step, such as emulsification or addition of subsequent ingredients. When "one-pot processing" is not possible, one can simply prepare a pre-mix of the Bentone Gel with compatible oil(s) in a side-vessel. Its shear thinning rheology permits easy transfer to the main-mix vessel. Where only lower shear mixing equipment is available, first stir the Bentone Gel and then slowly add the most compatible component gradually, always ensuring the mixture remains homogeneous at each stage. One precaution is necessary, and that is to avoid prolonged laminar flow.”
The Pentaerythrity Tetraisostearate aides the dispersion of the pigments and provides an elegant emollient film. From the rheograms, which are representative of the ones generated for all of the prototypes, it is easy to see that Bentone Gel® PTIS V imparts its rheological properties to the finished formulation. Because of the increased yield stress， the organoclay effectively stabilizes the pigments in suspension (Figure 8).
The flowcurve for the mascara with Bentone Gel PTIS V shows an increase in the low shear viscosity and thixotropy, which indicates enhanced application properties (See Figure 9).
The photograph below (Figure 11) shows that after only a couple of weeks at room temperature, 24°C, the mascara without organoclay has already undergone strong phase separation, whereas the mascara with Bentone Gel PTIS V remains a viscous and stable product throughout the full term of our stability study protocol.
德國VMA Dispermat 實驗室和生產(chǎn)用的分散球磨設(shè)備
