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ROPAQUE Opaque Polymer is a hollow-sphere, synthetic polymer used primarily as a white pigment extender or opacifier in paints, coatings, and other products.
ROPAQUE Opaque Polymer is manufactured and is often used as a cost-effective replacement or supplement for titanium dioxide (TiO₂) in formulations.
ROPAQUE Opaque Polymer is a non-film forming, acrylic polymer hollow-sphere opaque pigment allowing manufactures to reduce formulation costs without sacrificing properties by being one of the most efficient dry hiding capabilities for interior and exterior coatings.
CAS Number: 13463-67-7
Molecular Formula: O2Ti
Molecular Weight: 79.8658
EINECS Number: 236-675-5
Synonyms: TITANIUM DIOXIDE, 13463-67-7, Rutile, dioxotitanium, Titanium(IV) oxide, Titania, Anatase, Anatase (TiO2), 1317-70-0, 1317-80-2, Rutile (TiO2), Titanium White, Titafrance, Hombitan, Tiofine, Tioxide, Tipaque, Titanox, Rayox, Bayertitan A, Titanic anhydride, Tioxide RHD, Tioxide RSM, Zopaque LDC, Rutiox CR, Titanox RANC, A-Fil Cream, Calcotone White T, Tioxide A-DM, Tioxide AD-M, Levanox White RKB, Flamenco, Titandioxid, A-Fil, Kronos, Tronox, Unitane, Zopaque, Runa rh20, Unitane or-150, Unitane or-340, Unitane or-342, Unitane or-350, Unitane or-540, Unitane or-640, Bayertitan T, Kronos RN 40P, Kronos RN 56, Tiona td, Horse head a-420, Unitane OR 450, Unitane OR 650, Tin dioxide dust, Titanium peroxide, Titanox 2010, Uniwhite AO, Uniwhite KO, Kronos CL 220, Kronos titanium dioxide, Unitane OR, Kronos 2073, Ti-Pure, Bayertitan AN 3, Tioxide R-CR, Tioxide R-SM, Tioxide R.XL, 1700 White, Runa ARH 200, Bayertitan R-U-F, Titanium peroxide (TiO2), Aerosil P 25, Aerosil P 27, Austiox R-CR 3, Bayertitan, Baytitan, Cab-O-Ti, Titandioxid (sweden), Aerolyst 7710, Hombitan R 101D, Hombitan R 610K, Unitane o-110, Unitane o-220, Uniwhite OR 450, Uniwhite OR 650, Horse head a-410, Horse head r-710, Aerosil P 25S6, Aerosil T 805, Atlas white titanium dioxide, Tipaque R 820, Titanium(IV) oxide, rutile, Blend White 9202, 63B1 White, Amperit 780.0, Unitane 0-110, Unitane 0-220, Cosmetic White C47-5175, Runa ARH 20, Titanium oxide (TiO2), P 25 (oxide), RO 2, CG-T, Ti-Pure R 900, Ti-Pure R 901, Bistrater L-NSC 200C, Tiona t.d., C-Weiss 7, Titanium(IV) oxide, anatase, CCRIS 590, Cosmetic White C47-9623, TiO2, KH 360, A-FN 3, HSDB 869, NCI-C0424O, AUF 0015S, AMT 600, JR 600A, Cosmetic Hydrophobic TiO2 9428, 234DA, 500HD, NCI-C04240, Cosmetic Micro Blend TiO2 9228, dioxyde de titane, UNII-15FIX9V2JP, C.I. 77891, dioxido de titanio, E 171, EINECS 215-282-2, EINECS 236-675-5, CL 310, NSC 15204, Orgasol 1002D White 10 Extra Cos, Brookite, CCRIS 9325, CI 77891, oxido de titanio(IV), 1385RN 59, AI3-01334, BR 29-7-2, R 680, Titanium dioxide (USP), Titanium dioxide [USP], 15FIX9V2JP, CHEBI:32234, EC 215-282-2, EC 236-675-5, NSC15204, MFCD00011269, NSC-15204, Octahedrite, Tichlor, Titanium dioxide; TiO2, Titanic oxide, Titan White, Anatase titanium dioxide, Trioxide(s), (TiO2), [TiO2], Austiox R-CR, Tioxide A-HR, Tioxide R XL, Bayertitan R-U 2, Bayertitan R-FK-D, Bayertitan R-FD 1, Bayertitan R-KB 2, Bayertitan R-KB 3, Bayertitan R-KB 4, Bayertitan R-KB 5, Bayertitan R-KB 6, Tinoc M 6, Octahedrite (mineral), Titandioxid [Swedish], austiox, Bayer R-FD 1, bayeritian, Bayertitan R-FK 21, Titanium oxide (VAN), Kronos 1002, R 830 (mineral), C-Weiss 7 [German], MC 50 (oxide), C 97 (oxide), NT 100 (oxide), Bayertitan R-V-SE 20, S 150 (oxide), Titanium(IV) oxide, catalyst support, 15 wt% Titanium Oxide in Water Nano, unitane or 572, AMT 100, Rutile titanium dioxide, EINECS 215-280-1, TITANIUM DIOXIDE ENAMEL GRADE, UNITANE;PIGMENT WHITE 6;TIO2;TITANIC ANHYDRIDE;TITAN DIOXIDE;TITANIA;TITANIUM(+4)OXIDE;TITANIUM DIOXIDE, ANATASE
ROPAQUE Opaque Polymer, is a white powder and has the greatest hiding power of all white pigments.
ROPAQUE Opaque Polymer is noncombustible; however, it is a powder and, when suspended in air, may cause a dust explosion if an ignition source is present.
ROPAQUE Opaque Polymer is not listed in the DOT Hazardous Materials Table, and the DOT does not consider it hazardous in transportation.
The primary uses are as a white pigment in paints, paper, rubber, and plastics; in cosmetics; in welding rods; and in radioactive decontamination of the skin.
ROPAQUE Opaque Polymer is a titanium oxide with the formula TiO2.
A naturally occurring oxide sourced from ilmenite, rutile and anatase, it has a wide range of applications.
ROPAQUE Opaque Polymer has a role as a food colouring.
The naturally occurring dioxide exists in three crystal forms: anatase, rutile and brookite.
While rutile, the most common form, has an octahedral structure.
Anatase and brookite have very distorted octahedra of oxygen atoms surrounding each titanium atom.
In such distorted octahedral structures, two oxygen atoms are relatively closer to titanium than the other four oxygen atoms.
Anatase is more stable than the rutile form by about 8 to 12 kJ/mol.
Two main physico-chemically distinct polymorphs of TiO2 are anatase and rutile.
Anatase has a higher photocatalytic activity than rutile but is thermodynamically less stable.
ROPAQUE Opaque Polymer is neutralized with ammonia.
White, amorphous, odorless, and tasteless nonhygroscopic powder.
Although the average particle size of titanium dioxide powder is less than 1 mm, commercial titanium dioxide generally occurs as aggregated particles of approximately 100 mm diameter.
ROPAQUE Opaque Polymer may occur in several different crystalline forms: rutile; anatase; and brookite. Of these, rutile and anatase are the only forms of commercial importance.
Rutile is the more thermodynamically stable crystalline form, but anatase is the form most commonly used in pharmaceutical applications.
Metastable over long periods of time despite being less thermodynamically stable than rutile.
However, above 700°C, the irreversible and rapid monotropic conversion of anatase to rutile occurs.
ROPAQUE Opaque Polymer exhibits a greater transparency in the near-UV than rutile.
With an absorption edge at 385 nm, anatase absorbs less light at the blue end of the visible spectrum and has a blue tone.
ROPAQUE Opaque Polymer occurs naturally as the minerals rutile (tetragonal structure), anatase (tetragonal structure), and brookite (orthorhombic structure).
ROPAQUE Opaque Polymer may be prepared commercially by either the sulfate or chloride process.
In the sulfate process a titanium containing ore, such as ilemenite, is digested in sulfuric acid.
This step is followed by dissolving the sulfates in water, then precipitating the hydrous titanium dioxide using hydrolysis.
Finally, the product is calcinated at high temperature.
In the chloride process, the dry ore is chlorinated at high temperature to form titanium tetrachloride, which is subsequently oxidized to form titanium dioxide.
There are two major processes for the manufacture of titanium dioxide pigments, namely sulfate route and chloride route.
In the sulfate process, the ore limonite, FeOTiO2, is dissolved in sulfuric acid and the resultant solution is hydrolyzed by boiling to produce a hydrated oxide, while the iron remains in solution.
The precipitated ROPAQUE Opaque Polymer is washed and leached free of soluble impurities.
Controlled calcinations at about 1000°C produce pigmentary titanium dioxide of the correct crystal size distribution; this material is then subjected to a finishing coating treatment and milling.
ROPAQUE Opaque Polymer is mined from natural deposits.
ROPAQUE Opaque Polymer also is produced from other titanium minerals or prepared in the laboratory.
Pigment-grade dioxide is produced from the minerals, rutile and ilmenite.
Rutile is converted to pigment grade rutile by chlorination to give titanium tetrachloride, TiCl4.
Anhydrous tetrachloride is converted back to purified rutile form by vapor phase oxidation.
Anatase form is obtained by hydrolytic precipitation of titanium(IV) sulfate on heating.
The mineral ilmenite is treated with concentrated sulfuric acid.
Heating the sulfate solution precipitates hydrous titanium oxide.
The precipitate is calcined to expel all water.
ROPAQUE Opaque Polymer also can be prepared by heating Ti metal in air or oxygen at elevated temperatures.
A hollow-sphere polymeric pigment that allows paint manufacturers to reduce the raw material cost of their formulations with no performance penalties.
Expands the boundaries of light scattering technology, providing the most efficient dry hiding in interior and exterior coatings.
ROPAQUE Opaque Polymer expands the boundaries of light scattering technology, providing the most efficient dry hiding in interior and exterior coatings.
Additionally, this non-film-forming synthetic pigment is specially engineered to improve the economics of waterborne coatings while maintaining coating performance.
Like its predecessors, ROPAQUE Opaque Polymer is a hollow-sphere polymeric pigment that allows paint manufacturers to reduce the raw material cost of their formulations with no performance penalties.
ROPAQUE Opaque Polymer are the most efficient products in the ROPAQUE Opaque Polymer product family.
The only difference between ROPAQUE Opaque Polymer is the neutralizer. ROPAQUE™ Ultra is neutralized with ammonia, and ROPAQUE Ultra E is neutralized with sodium hydroxide.
ROPAQUE Opaque Polymer is an advanced polymeric opacifier engineered to improve the efficiency of TiO2.
ROPAQUE Opaque Polymer offers paint application and performance improvements, lowers the consumption of TiO2 and reduces the cost of all types of water based paints.
The polymer consists of hollow spheres that scatter light efficiently, providing opacity and whiteness similar to titanium dioxide.
By partially replacing titanium dioxide, it reduces material costs while maintaining or enhancing the desired properties.
ROPAQUE Opaque Polymer can improve the durability, brightness, and opacity of coatings and paints.
It reduces the environmental footprint associated with the high energy and resource intensity of producing titanium dioxide.
Used in architectural and industrial coatings to achieve opacity with lower pigment content.
ROPAQUE Opaque Polymer enhances opacity and brightness in paper products.
Found in formulations like sunscreens and cosmetics to provide opacity and coverage.
ROPAQUE Opaque Polymer is used in finishes that require whiteness and opacity.
Melting point: 1840 °C
Boiling point: 2900 °C
Density: 4.26 g/mL at 25 °C(lit.)
refractive index: 2.61
Flash point: 2500-3000°C
storage temp.: Store at +5°C to +30°C.
solubility: Practically insoluble in water. It does not dissolve in dilute mineral acids but dissolves slowly in hot concentrated sulfuric acid.
form: powder
Specific Gravity: 4.26
color: White to slightly yellow
PH: 7-8 (100g/l, H2O, 20℃)(slurry)
Odor: at 100.00?%. odorless
Water Solubility: insoluble
Crystal Structure: Orthorhombic, Pcab
Merck: 14,9472
Exposure limits ACGIH: TWA 10 mg/m3
OSHA: TWA 15 mg/m3
NIOSH: IDLH 5000 mg/m3; TWA 2.4 mg/m3; TWA 0.3 mg/m3
Dielectric constant: 2.9（20℃）
ROPAQUE Opaque Polymer occurs in nature in the crystalline forms rutile, anatase, and brookite.
Rutile and anatase are manufactured in large quantities, which are primarily used as pigments, but also as catalysts and in ceramics.
ROPAQUE Opaque Polymer is of outstanding importance as a white pigment because of its scattering properties, its chemical stability, its biological inertness, and its lack of toxicity.
The pigment is frequently coated with colorless organic or inorganic compounds of low solubility to improve its weather resistance, lightfastness, and dispersibility.
ROPAQUE Opaque Polymer is widely used in the paints and coatings industry as a cost-effective solution to enhance the opacity and whiteness of formulations.
In interior architectural paints, it is often incorporated to improve both wet and dry hiding power, ensuring even coverage with fewer layers, especially in matte, satin, and eggshell finishes.
For exterior paints, ROPAQUE Opaque Polymer contributes to durability and weather resistance, helping to maintain the brightness and opacity of the paint even after prolonged exposure to sunlight, moisture, and varying temperatures.
It also finds extensive application in industrial coatings such as automotive, marine, and protective finishes, where smoothness, aesthetic appeal, and durability are critical performance factors.
The naturally occurring dioxide exists in three crystal forms: anatase, rutile and brookite.
While rutile, the most common form, has an octahedral structure.
Anatase and brookite have very distorted octahedra of oxygen atoms surrounding each titanium atom.
In such distorted octahedral structures, two oxygen atoms are relatively closer to titanium than the other four oxygen atoms.
ROPAQUE Opaque Polymer is a white pigment used as a pigment in paint; in the rubber, plastics, ceramics, paint, and varnish industries, in dermatological preparations; and is used as a starting material for other titanium compounds; as a gem; in curing concrete; and in coatings for welding rods.
ROPAQUE Opaque Polymer is also used in paper and cardboard manufacture.
ROPAQUE Opaque Polymer occurs in nature in three polymorphic crystal forms: anatase, rutile, and brookite.
Moreover, under high pressure, the structure of all three polymorphs of titanium dioxide may be converted into that of α-PbO2.
The following diagram summarises the main properties of these three polymorphisms.
Owing to a photocatalytic effect, ROPAQUE Opaque Polymer may interact with certain active substances, e.g. famotidine.
Studies have shown that ROPAQUE Opaque Polymer monatonically degrades film mechanical properties and increases water vapor permeability of polyvinyl alcohol coatings when used as an inert filler and whitener.
ROPAQUE Opaque Polymer has also been shown to induce photooxidation of unsaturated lipids.
ROPAQUE Opaque Polymer is a water-based dispersion of hollow polymer spheres.
The structure of these spheres allows them to trap air inside, which is critical for their light-scattering properties.
When these hollow spheres are included in a paint or coating formula:
The trapped air inside the polymer spheres enhances light scattering, contributing to opacity and whiteness, much like titanium dioxide (TiO₂).
Upon drying, the hollow spheres create a continuous film that supports the scattering of light throughout the dried layer.
Offers exceptional light scattering to maintain or enhance opacity even with reduced TiO₂.
ROPAQUE Opaque Polymer reduces the dependency on expensive pigments like TiO₂ by replacing part of it without sacrificing quality.
High thermal, mechanical, and chemical stability, making it suitable for a wide range of formulations.
Decreases the environmental cost associated with manufacturing and transportation of TiO₂, contributing to greener formulations.
Available in various grades tailored for different performance needs, such as improved scrub resistance or weather durability.
While effective, ROPAQUE Opaque Polymer cannot entirely replace TiO₂ in some high-performance applications, as titanium dioxide still provides unmatched opacity and brightness at high concentrations.
May require adjustments in formulations to ensure stability and compatibility with other additives and binders.
The cost benefits depend on the local market price of titanium dioxide and the specific formulation requirements.
Uses Of ROPAQUE Opaque Polymer:
ROPAQUE Opaque Polymer is frequently used in specialty applications such as printing inks, where its light-scattering properties ensure that colors appear more vibrant and text is sharp and easy to read.
This is especially important in applications like product labels, advertising posters, and premium packaging that require high contrast and excellent color reproduction.
Furthermore, it is increasingly used in eco-friendly products, such as low-VOC paints and coatings, as part of efforts to reduce the environmental impact of formulations by minimizing the reliance on titanium dioxide.
In construction materials, ROPAQUE is included in cementitious coatings and reflective roofing materials to enhance brightness and opacity, which can also contribute to better energy efficiency by reflecting heat.
ROPAQUE Opaque Polymer, also known as rutile, is one of the best-known compounds used as a paint pigment.
Of the 3.06 million metric tons of Ti02 used in 1992, 51 % was used in coatings, 19% in plastics, 14% in paper, and the balance of 8% in several different applications such as elastomers, ceramics, cosmetics, and foods.
ROPAQUE Opaque Polymer is ideal for paints exposed to severe temperatures and marine climates because of its inertness and self-cleaning attributes.
It is also used in manufacture of glassware, ceramics, enamels, welding rods, and floor coverings.
ROPAQUE Opaque Polymer is an extreme white and bright compound with high index of refraction.
In paints it is a white pigment and an opacifying agent.
ROPAQUE Opaque Polymer is in house paints, water paints, lacquers, enamels, paper filling and coating, rubber, plastics, printing ink, synthetic fabrics, floor coverings, and shoe whiteners.
Also, ROPAQUE Opaque Polymer is used in colorants for ceramics and coatings for welding rods.
ROPAQUE Opaque Polymer a rutile form of the dioxide is used in synthetic gem stones.
ROPAQUE Opaque Polymer is a white pigment that disperses in liquids and possesses great opacifying power.
ROPAQUE Opaque Polymer the crystalline modifications of titanium dioxide are rutile and anatase, of which only anatase finds use as a color additive.
Airfloated ilmenite is used for titanium pigment manufacture.
Rutile sand is suitable for welding-rod-coating materials, as ceramic colorant, as source of titanium metal.
Anatase titanium dioxide is used for welding-rod-coatings, acid resistant vitreous enamels, in specification paints, exterior white house paints, acetate rayon, white interior air-dry and baked enamels and lacquers, inks and plastics, for paper filling and coating, in water paints, tanners' leather finishes, shoe whiteners, and ceramics.
High opacity and tinting values are claimed for rutile-like pigments.
ROPAQUE Opaque Polymer is one of the 21 FDA-approved sunscreen chemicals with an approved usage level of 2 to 25 percent.
When applied, titanium dioxide remains on the skin’s surface, scattering uV light.
ROPAQUE Opaque Polymer is often used in conjunction with other sunscreen chemicals to boost the product’s SPF value, thus reducing the risk of irritation or allergies attributed to excessive usage of chemical sunscreens.
Its incorporation into sunscreen formulations, makeup bases, and daytime moisturizers depends on the particular size of titanium dioxide employed.
The smaller the particle size, the more unobtrusive Tio2’s application.
Large particles, on the other hand, leave a whitish wash or look on the skin.
Some companies list “micro” or “ultra” when referring to the size of the titanium dioxide particle.
According to some sources, titanium dioxide could be the ideal uVA/uVB protection component given its chemical, cosmetic, and physical characteristics.
ROPAQUE Opaque Polymer is also used to provide a white color to cosmetic preparations.
ROPAQUE Opaque Polymer is widely used in confectionery, cosmetics, and foods, in the plastics industry, and in topical and oral pharmaceutical formulations as a white pigment.
Owing to its high refractive index, ROPAQUE Opaque Polymer has lightscattering properties that may be exploited in its use as a white pigment and opacifier.
The range of light that is scattered can be altered by varying the particle size of the titanium dioxide powder.
For example, titanium dioxide with an average particle size of 230nm scatters visible light, while titanium dioxide with an average particle size of 60nm scatters ultraviolet light and reflects visible light.
In pharmaceutical formulations, ROPAQUE Opaque Polymer is used as a white pigment in film-coating suspensions, sugar-coated tablets, and gelatin capsules. Titanium dioxide may also be admixed with other pigments.
ROPAQUE Opaque Polymer is also used in dermatological preparations and cosmetics, such as sunscreens.
Used in interior and exterior paints to provide high-quality opacity and whiteness with reduced TiO₂ content.
Often found in matte, eggshell, and satin finishes.
Applied in automotive, marine, and protective coatings where durability and opacity are essential.
Enhances brightness, whiteness, and opacity in coated paper for packaging, labels, and printing.
ROPAQUE Opaque Polymer included in cosmetic formulations like liquid foundations, sunscreens, and creams to provide a soft-focus effect or hide imperfections.
Helps improve the visual appearance of textiles by making them appear brighter and more opaque.
In the paper and packaging industry, ROPAQUE Opaque Polymer is utilized to improve the opacity, brightness, and printability of coated paper and cardboard.
This is especially important in applications like high-quality printing papers, food packaging, and labels, where vibrant colors and sharp contrasts are essential for both functionality and visual appeal.
By partially replacing titanium dioxide, ROPAQUE Opaque Polymer reduces production costs while still delivering the desired optical properties that are crucial for premium packaging and advertising materials.
ROPAQUE Opaque Polymer is also a key ingredient in the formulation of personal care products, particularly cosmetics and skincare items, where its light-scattering properties contribute to a smooth and uniform appearance. In foundations, BB creams, and concealers, it helps to blur imperfections and create a soft-focus effect, making the skin appear more even and radiant. In sunscreens and moisturizers, it not only provides a pleasant texture and coverage but also ensures the product spreads evenly on the skin without leaving a heavy or greasy residue.
These attributes make it an excellent choice for formulating lightweight, breathable, and effective personal care products.
In the plastics and polymers sector, ROPAQUE Opaque Polymer is incorporated into masterbatches and films to enhance opacity, whiteness, and overall visual appeal.
ROPAQUE Opaque Polymer is particularly valuable in applications like thin films, sheets, and rigid containers, where cost control is crucial but the final product still needs to exhibit superior optical properties.
ROPAQUE Opaque Polymers ability to replace a portion of titanium dioxide while maintaining performance makes it an ideal additive for achieving cost-efficiency without compromising quality.
ROPAQUE Opaque Polymer is used in the textile industry to enhance the appearance of coated fabrics by improving their opacity and brightness.
This is especially relevant in decorative textiles for home furnishings, fashion, and industrial materials, where a uniform and vibrant finish is necessary.
Additionally, its compatibility with a wide range of coatings and finishes ensures that the treated fabrics remain durable and visually appealing even after extensive use.
Storage Of ROPAQUE Opaque Polymer:
ROPAQUE Opaque Polymer is extremely stable at high temperatures.
This is due to the strong bond between the ROPAQUE Opaque Polymer ion and the bivalent oxygen ions.
However, ROPAQUE Opaque Polymer can lose small, unweighable amounts of oxygen by interaction with radiant energy.
This oxygen can easily recombine again as a part of a reversible photochemical reaction, particularly if there is no oxidizable material available.
These small oxygen losses are important because they can cause significant changes in the optical and electrical properties of the pigment.
ROPAQUE Opaque Polymer should be stored in a well-closed container, protected from light, in a cool, dry place.
Safety Profile Of ROPAQUE Opaque Polymer:
ROPAQUE Opaque Polymer a nuisance dust.
A human skin irritant.
Questionable carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data.
Violent or incandescent reaction with metals at high temperatures (e.g., aluminum, calcium, magnesium, potassium, sodium, zinc, lithium).
ROPAQUE Opaque Polymer is widely used in foods and oral and topical pharmaceutical formulations.
It is generally regarded as an essentially nonirritant and nontoxic excipient.
