Cellulose phosphate

Phosphorus-Containing Cellulose Esters. Cellulose phosphate [9015-14-9] esters (CP) are of interest because of their inherent dame resistance and ion-exchange capabiUty. 

Lactoferrin (from human whey). Purified by direct adsorption on cellulose phosphate by batch extraction, then eluted by a stepped salt and pH gradient. [Foley and Bates Anal Biochem 162 296 1987.]... 

Cellulose phosphate(s), 5 401 8 29 20 459 flame resistant, 8 27 paper, 5 408 solubility of, 5 402 Cellulose propionate manufacture of, 5 418 moisture properties, 5 416t Cellulose propionate valerate, 5 421 Cellulose propionate isobutyrate, 5 421 Cellulose substrates, dyeability of, 9 482-483... 

Cellulose phosphate esters are produced from reaction with phosphoric acid and urea. The products are used to treat hypercalciuria because of its ability to bind calcium. It has also been used for the treatment of kidney stones. 

CM cellulose (carboxymethyl) CM 22, 23 cellulose P cellulose (phosphate) SE cellulose (sulphoethyl) SM cellulose (sulphomethyl) DEAE cellulose (diethylaminoethyl) DE 22, 23 cellulose PAB cellulose (p-aminobenzyl) TEAE cellulose (triethylaminoethyl) ECTEOLA cellulose... 

Cation-exchange columns have been used effectively by some investigators for the fractionation of casein (Annan and Manson 1969 Kim et al 1969 Kopfler et al. 1969 Snoeren et al. 1977 Saito et al 1979). Sulfoethyl-Sephadex was used by Annan and Manson (1969) with formate buffer to fractionate the as-casein complex. Cellulose phosphate, carboxyl-methyl-cellulose (CMC), potassium-K-carrageenan, and sodium Amberlite CG50 columns have also been used to fractionate the caseins (Kim et al. 1969 Kopfler et al. 1969 Snoeren et al 1977). A batch method for the preparation of para-K-casein from rennin-treated whole casein has been developed with CMC Sephadex (Saito et al. 1979). 

Selective adsorption on glass Ammonium sulfate fractionation Ammonium sulfate fractionation Ethanol precipitation Sonic disintegration Selective adsorption on cellulose phosphate CM-cellulose chromatography Acetone precipitation Ammonium sulfate fractionation Ethanol precipitation Selective adsorption on cellulose phosphate Ammonium sulfate fractionation Lysozyme and trypsin digestion Ammonium sulfate fractionation DEAE-cellulose chromatography Ammonium sulfate fractionation... 

Selective adsorption on cellulose phosphate CM-cellulose chromatography Centrifugation on sucrose gradient Electrophoresis on sucrose gradient Ultrasonic disintegration DEAE-cellulose chromatography Gel filtration... 

The reaction of polybasic acids, such as phosphoric, with cellulose in the presence of an organic base such as urea (5, 8). The urea acts as a buffer in the formation of the cellulose-phosphate reaction products, reducing the weakening of die fiber. The flame resistance of this type of treatment is claimed to result from the inorganic or acid anhydride itself. 

Tempesti et al. (238) used organoboronic acids (lib) for the immobilization of Mo(VI). It is assumed that the interaction of Mo occurs through a condensation with the supported acid. Reactions reported with the bimetallic material showed an activity and selectivity comparable to those of homogeneous bimetallic analogs. In a comparable approach, Mo was anchored to immobilized phosphorus-containing acids, for example, of cellulose phosphate (11c) (239) or phosphonate resins (11a) (240). 

Considerable interest has been directed to the preparation of cellulose phosphates because of their flame retarding properties and potential use in textiles. Phosphorylation can be accomplished in several ways, e.g., by heating cellulose at high temperatures with molten urea and phosphoric acid. Other phosphor-containing esters of cellulose include phosphites, phosphinates, and phosphonites. In addition, boric acid esters have been prepared. 

Special Reagent Use phosphoryl cellulose (cellulose phosphate) of 1.2 meq/g capacity. Phosphoryl cellulose of higher or lower capacities may be used in proportionately higher or lower quantities. 

There are two problems that must be anticipated, however. First sufficient cellulosic resin must be added. This may be determined by removing small samples of the solution and determining the amount of resin needed to bind as much protein as will bind. Once this has been done the amount of resin needed per unit weight of soluble protein may be calculated. In practice, this allows one to perform a simple biuret protein determination and calculate the quantity of resin needed. It is also advisable to spend a small amount of time determining which of the cellulosic resins (i.e., DEAE, CM, cellulose phosphate) and which experimental conditions yield the best results on a small scale before proceeding to large scale operations. 

CM-ccllulose DEAE-cellulose ECTEOLA-cellulosc polyethylene inline (PHI) cellulose cellulose phosphate... 

Sodium cellulose phosphate (Calcisorb) binds calcium in the gut, reduces urinary calcium excretion and may benefit calcium stone-formers. 

To bind dietary calcium in the gut sodium cellulose phosphate (Calcisorb) is an oral ion exchange substance with a particular affinity for calcium. Bound calcium is eliminated in the faeces. It is used particularly for patients who overabsorb dietary calcium and who develop hypercalciuria and renal stones. 

The crude prostatic homogenate was also passed through a column of cellulose phosphate, and eluted with 0.01 M citrate, pH 6.0. The resulting single peak was then fractionated by DEAE-cellulose chromatography into two peaks. These two peaks (fractions II and IV) were further purified by gel filtration they constituted 50- and 100-fold purifications from the prostatic homogenate. 

DILUANTS lactose cellulose phosphate mannitol DISINTEGRANTS croscarmell. Na Na starch gly. LUBRICANTS glyceryl behena Mg stearate BINDERS povidone HPMC-DOSE-low medium ... 

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