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FOR PREVENTING THE BARIUM SULFATE
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| Brand | Owner (click to sort) |
|---|---|
| 4TH EYE | SCIENCE PARK CORPORATION |
| BUDENHEIM | CHEMISCHE FABRIK BUDENHEIM KG |
Technical Examples
- The invention relates to an opaque, white film with a thickness of from 10 to 500 ?m whose principal constituent is a crystallizable thermoplastic. The film comprises at least barium sulfate and at least one optical brightener. The barium sulfate and/or the optical brightener are incorporated directly into the crystallizable thermoplastic or are fed as a masterbatch during film production. At least one surface of the film bears a functional coating with a thickness of from 5 to 100 nm, in order to confer on the film surface an additional function such as sealability, printability, metallizability, sterilizability, antistatic properties, aroma barrier properties or improved adhesion to materials which would not adhere to the film surface without the coating, for example photographic emulsions.
- A process for producing gabapentin, (1-(aminomethyl)-1-cyclohexaneacetic acid) from gabapentin hydrochloride salt. In the disclosed process, the gabapentin hydrochloride is converted to gabapentin using an inorganic base, such as barium hydroxide. Gabapentin hydrochloride is converted to gabapentin sulfate which in turn is converted to free base using barium hydroxide. The process is directed to improvement in the manufacture of gabapentin which would be industrially feasible and effective. Gabapentin obtained following the process of the invention is suitable as a drug especially in the treatment of cerebral diseases such as epilepsy.
- The invention provides a method for producing a compound represented by the following formula (II), comprising executing alkali hydrolysis of a compound represented by the following formula (I) with an alkali metal hydroxide in the presence of a barium compound to from the compound represented by formula (II), precipitating the barium compound in the form of a barium halide, and eliminating the barium halide:
- IR 6 (Cosmetics, Toiletry and Fragrance Association, Inc., 7th ed. 1997). Viscosities are measured using Brookfield viscometers (1,000-20,000 cps, Spindle No. 5, 20 rpm, 60 second run, 25 degrees C.) unless otherwise indicated. 967-00-IR # 6961-00-1-A low viscosity, stable dispersion of behenyl alcohol comprising: (a) 10-40 weight % on an actives basis of behenyl alcohol; (b) 1.0-8.0 weight % of an anionic surfactant selected from the group consisting of sodium lauryl ether sulfate, sodium lauryl sulfate, magnesium lauryl ether sulfate, magnesium lauryl sulfate, calcium lauryl ether sulfate, calcium lauryl sulfate, ammonium lauryl ether sulfate, and ammonium lauryl sulfate; and (c) 1.0-3.0 weight % (on an actives basis) of a betaine selected from the group consisting of C12-18 amidopropylbetaine; wherein the dispersion has a stability of at least 3 months at a temperature of 49 degrees C., a viscosity in the range of 1,000-20,000 centipoise, and no more than 0.2 weight % of cationic material.
- The present invention relates to a method for preparing barium titanate based powder. More particularly, the present invention provides a method for preparing barium titanate powder comprising the following steps of precipitation of barium titanyl oxalate (BaTiO(C2O4)2.4H2O) with spraying a mixture of an aqueous barium chloride (BaCl2.2H2O) and titanium tetrachloride (TiCl4) to an aqueous solution of oxalic acid, via a nozzle; wet pulverization by using a beads mill after adding an additive such as an amine; dry; pyrolysis; and re-pulverization.
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