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.
, disinfection, and aging treatments were statistically significant with respect to hardness (p < .05).
* Hollow Sphere Pigment -- HP-543P -- opacifier
used in base white coatings and ink applications.
glazing failures include, but are not limited to, delamination, opacifier
film failures, failed gaskets, structural silicone de-bonding, and failed weather sealants.
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.
Another way of enhancing opacity in a white coating is the inclusion of air (n=1), which can improve the efficiency of titanium dioxide as an opacifier
, air has environmental and cost benefits.
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
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.