opacifier


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opacifier

[ō′pas·ə‚fī·ər]
(materials)
A substance, used to treat a solid rocket propellant, that absorbs light and heat and protects the propellant from deterioration until ready for use.
A material used in ceramic glazes and vitreous enamels to render them nontransparent and to improve other properties.
References in periodicals archive ?
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.
The opacifier, 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 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.