barium sulfate comprising

Thermally Stable Catalyst Carrier Comprising Barium Sulfate

A catalyst carrier comprising a porous support and a barium sulfate layer dispersed on outer and inner surfaces of the porous support and chemically bonded thereto, wherein the catalyst carrier has a BET surface area of at least about 100 m 2 /g, and an average pore radius of about 80 Angstroms to about 150 Angstroms. 2.

US Patent for Barium sulfate, process for its preparation ...

2007-10-4 · 1. A process comprising: mixing a barium- and a sulfate-containing solution to form barium sulfate; filtering to recover a filter cake containing the barium sulfate; suspending the separated filter cake in water; mixing the suspension with at least one organic additive selected from the group consisting of an alcohol, a polyhydric alcohol, a polyalcohol, an organic ester, an organic sulfone ...

Norbar Minerals

A dense mineral comprising barium sulfate (BaSO4), commonly used as a weighting agent for all types of drilling fluids. Norbar Minerlas barite is mined in Marocco and shipped as ore to the grinding plant at Karmøy. The end product is offered in several different qualities depending on particle size, density and non-sag features. Bentonite.

US Patent for Micronized barium sulfate Patent (Patent ...

2004-4-14 · These and other objects are achieved in accordance with the present invention by providing a method for producing particulate barium sulfate in which at least 90% of the particles have a primary grain diameter of less than 0.1 μm, said method comprising combining a barium salt solution with an alkali sulfate salt solution to form a reaction ...

MAGNETIC RESONANCE IMAGING AGENT COMPRISING …

1994-5-19 · A negative contrast agent for MRI is an aqueous suspension having a quantity of barium sulfate between 25 and 40 percent by weight and a quantity of bentonite between two and four percent by weight. Such a negative contrast agent provides dark imaging in a T2 weighted pulse sequence; namely a relative signal intensity (RSI) approaching zero.

Barium sulfate removal and anti-deposition compositions ...

The invention provides a process for the sequestration of barium sulfate scale and barium sulfate sequestrant compositions therefor comprising an aqueous solution of citric acid (CA), a polycarbazic a

Acid/Alkali‐Proof Fire‐Resistant Inorganic Paper ...

2020-11-25 · Acid/Alkali-Proof Fire-Resistant Inorganic Paper Comprising Fibers Assembled from Barium Sulfate Nanorods Dr. Jin Wu, State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, …

Barium sulfate | CAS#:7727-43-7 | Chemsrc

2021-1-24 · Chemsrc provides Barium sulfate(CAS#:7727-43-7) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of Barium sulfate are included as well.

POLYMERIC MATERIALS COMPRISING BARIUM SULPHATE …

2010-4-16 · Europe PMC is an archive of life sciences journal literature. The use of barium sulphate for increasing the impact strength of a polyaryletherketone and/or a polyarylethersulphone involves compounding the barium sulphate with the polymeric material and including water in …

Hierarchically Nanostructured Barium Sulfate Fibers | …

2017-11-4 · Acid/Alkali‐Proof Fire‐Resistant Inorganic Paper Comprising Fibers Assembled from Barium Sulfate Nanorods. European Journal of Inorganic Chemistry 2021, 2021 (5), 492-499.

Acid/Alkali‐Proof Fire‐Resistant Inorganic Paper ...

2020-11-25 · Acid/Alkali-Proof Fire-Resistant Inorganic Paper Comprising Fibers Assembled from Barium Sulfate Nanorods Dr. Jin Wu, State Key Laboratory of High …

US Patent Application for Barium Sulfate Product Patent ...

2006-12-11 · This invention generally relates to a barium sulfate product particularly useful as an X-ray contrast agent in preparations administered for examination of the gastrointestinal tract and to processes for making the product from naturally occurring barite ore containing barium sulfate crystals and gangue materials. The process includes treating or contacting the barium sulfate-containing ...

Barium sulfate and cosmetic compositions comprising …

A cosmetic composition comprising (1) barium sulfate having a plate crystal structure wherein the aspect ratio is 5-100, the ratio of the square of the circumference of the plate and the area of the orthogonal projection plane is 20:1-150:1, and the ratio of the diffraction peaks on planes (020) and (200) is 1.5-100; and (b) spherical powder ...

Barite (BARIUM)

2016-4-9 · A dense mineral comprising barium sulfate [BaSO 4] that commonly occurs with a range of accessory minerals, such as quartz, chert, dolomite, calcite, siderite and metal sulfides. Used as a weighting agent for all types of drilling fluids, barites are mined in many areas worldwide and shipped as ore to grinding plants in strategic locations.

Barite

Natural barium sulphates (barytes) are inert and allow very high loadings: fine-particle grades are preferred to increase the density of a plastics compound, while coarse particles are better for acoustic applications, especially in automobiles. Blanc fixe micro is a white inorganic powder for plastics and coatings, comprising barium and sulphate.

Acid/Alkali‐Proof Fire‐Resistant Inorganic Paper …

2021-2-1 · In this work, barium sulfate (BS) fibers with a three‐level nanorod‐assembled hierarchical structure have been synthesized in a large scale by the barium oleate precursor hydrothermal method. A new kind of anti‐acid and anti‐alkali fire‐resistant BS ...

BARIUM SULFATE SPHERICAL COMPOSITE POWDER AND …

A barium sulfate spherical composite powder which is a spherical composite powder comprising barium sulfate and silica, the composite powder having an average particle size of 0.5 to 100 μm, a haze of 50% or more, and a silica content of 1 to 45% by mass. 5. The barium sulfate spherical composite powder according to claim 4, wherein the ...

US Patent for Barium sulfate-based powders and …

2002-3-7 · A barium sulfate-based powder is produced by bringing barium ions (A) into contact with sulfate ions (B) in the presence of one or more metallic ion species (C) selected from the group consisting of lithium ions, sodium ions, potassium ions, magnesium ions, calcium ions, zinc ions, and aluminum ions. Thus, barium sulfate-based powders having various characteristics and thus satisfying ...

Cosmetic powder comprising barium sulfate

2005-5-12 · Disclosed herein is a cosmetic powder comprising barium sulfate and either at least one elastomeric organopolysiloxane powder and at least one N-acylamino acid powder, or at least one polymethyl methacrylate powder and at least one polyurethane powder, or at least one acrylic polymer powder other than a polymethyl methacrylate powder. Processes for the use of such powder for …

Negative contrast agents for magnetic resonance imaging ...

1995-11-13 · Negative contrast agents for magnetic resonance imaging comprising barium sulfate and a clay (PAT - US5741477) DAVIS MICHAEL A, ZWARUN ANDREW A E Z EM INC. Patent: United STATES Patent - United States. Application: US19950545853 on 1995-11-13. Publication: 1998-04-21 ...

Role of barium carbonate and barium silicate nanoparticles ...

Nano barium carbonate-containing-cement mortar showed lower compressive and flexural strengths compared to those of nano barium silicate-modified-cement mortar at all ages of curing.-The consumption of internal sulfate escorted by the formation of barite and monocarboaluminate is the dominant reaction of barium carbonate nanoparticles.

US Patent for Sulfate scale dissolution Patent (Patent ...

Alkaline earth metal scales, especially barium sulfate scale deposits are removed from oilfield pipe and other tubular goods with a scale-removing composition comprising an aqueous alkaline solution having a pH of about 8 to about 14, preferably about 11 to 13, of a polyaminopolycarboxylic acid, preferably EDTA or DTPA and a catalyst or synergist comprising a monocarboxylic acid, preferably a ...

Barium Sulfate

Barium sulfate is a soft crystalline solid. It is a rhombic crystal. The pure salt is white but the color of the mineral "barite" can vary between red, yellow, gray or green, depending on impurities. Its density is 4.50 g/cm 3 and its refractive index is 1.64. It melts around 1580 °C but decomposes above 1600 °C.

What Is Barium Sulfate Suspension

Barium sulphate is an insoluble salt of barium that has several medicinal uses, especially in gastroenterology. It is a chemical compound comprising of three naturally occurring elements, barium (Ba), Sulphur (S) and Oxygen (O 2) and has a chemical formula BaSO 4.The insolubility of this chemical compound makes it an ideal substance to be given to a patient before a computer tomography (CT ...

Jin Wu, Ying-Jie Zhu*. Acid/Alkali-Proof Fire-Resistant Inorganic Paper Comprising Barium Sulfate Nanorods-Assembled Fibers. European Journal of Inorganic Chemistry, 2021 (5), 492–499 (2021). 8. Heng Li, Ying-Jie Zhu*. Hydroxyapatite Nanowires

Pro-Lite Water-Based Barium Sulphate Coating

2018-1-17 · Order Code Description OPRC05 Barium sulphate coating, 500ml OPRC1 Barium sulphate coating, 1000ml OPRC2 Value pack – 2 x 1 litres OPRC3 Value pack – 3 x 1 litres OPRC5 Value pack – 5 x 1 litres OPRC10 Value pack – 2 x 5 litres OPRC-Set1 Spray pack, comprising: 1 x 500ml paint (OPRC05); 2 x sprayers (OPSP); 1 x glass bottle (OPGL) OPSP1 Individual sprayer (non-reusable)

CT Study of Radiopaque Implant Template for Gingival Form

CT templates comprising silicone impression materials containing 5 vol% barium sulfate were easy to use with regard to precise visualization of gingival form. The present study suggests that CT templates comprising silicone impression material containing 5 vol% barium sulfate provide useful information in the assessment of soft tissue ...