It would be very interesting to study the influence of the chemical composition of the frit and its interaction with pigments and
opacifier in predicting color.
Moreno, "Influence of
opacifiers on dimensional stability and detail reproduction of maxillofacial silicone elastomer,' BioMedical Engineering Online, vol.
* Hollow Sphere Pigment -- HP-543P --
opacifier used in base white coatings and ink applications.
The latter two properties can be optimized by appropriate selections of Ti[O.sub.2], polymeric
opacifier, and rheology modifiers.
Comments: The Syntran polymeric
opacifier imparts a milky white appearance at a lower total formulation cost.
The magnitude of light bending by refraction is approximately proportional to the square of the difference in refractive indices of the polymer matrix (Rl=1.48) and the pigment particles.2 Rutile titanium dioxide (Rl=2.76) has the highest refractive index of all white pigments, hence its high performance as a white
opacifier.
Phase A Water 95.55 Quaternium 15 0.10 Part B Sulfonated castor oil (75%) 0.75 Alkoxylated cetyl alcohol 1.50 PEG-12 dimethicone 1.00 Ethylhexyl palmitate 0.50 Fragrance (water soluble) 0.20 Polystyrene
opacifier 0.40
New products recently introduced to the market include: ACUDYNE[TM] 1000 Hair Styling Polymer, a hair fixative providing outstanding style hold and humidity resistance; EcoSmooth[TM] Satin, a new condi tioning polymer for use in shampoos and body washes; and OPULYN[TM] PQG, an
opacifier enabling the formulation of creamy, conditioning cleansing products.
For them, Ti[O.sub.2] is more than just a great
opacifier; it is the largest volume specialty chemical made today.