Polyoxyethylene, polymers

McDonald, C. andC. K. V fong. 1974. The effect oftemperature on the micellar properties of a polyoxypropylene-polyoxyethylene polymer in wataf. Pharm. Pharmalol. 26 556-557. 

Among the various reactions catalyzed by bases, we have selected (i) the polymerization of ethylene oxide catalyzed by MgO (260), (ii) the closely related reaction of ethylene oxide with alcohols on basic hydrotalcites to give polyoxyethylene polymer (the Henkel process), (iii) the phenol alkylation with methanol on MgO (General Electric and BASF processes) (261), and (iv) phenol animation to give aniline on MgO (the USS process) (262). 

Iliopoulos, I., Audebert, R. Influence of concentration, molecular-weight and degree of neutralization of polyacrylic-acid on interpolymer complexes with polyoxyethylene. Polym. Bull. 1985,13 (2), 171-178. 

The flux of liver TG to the plasma can be evaluated by intravenous administration of certain non-ionic surface-active agents. Intravenous injection of TRITON WR-1339 (a polyoxyethylene polymer) has a trapping effect on plasma lipoprotein-bound TG while it does not affect the rate of TG secretion from the liver. Thus, the extent of the hyperlipaemia is an index of the magnitude of the flux of liver TG to plasma in the rat it has been calculated to be of the order of 0 1 mg/min per 100 g body weight... 

Polyoxyethylene. Synthetic polymers with a variety of compositionaHy similar chemical stmctures are as follows. Based on polarity, poly(oxymethylene) (1) would be expected to be water soluble. It is a highly crystalline polymer used in engineering plastics, but it is not water-soluble (see... 

Antistats such as polyoxyethylenes (151,152) and A/-alkyl polycarbonamide (153) are added to nylon to reduce static charge and improve moisture transport and soil release in fabrics. These additives also alter the luster of fiber spun from bright polymer. Static reduction in carpets is achieved primarily by the use of fibers modified with conductive carbon black (see Antistatic agents Carbon, carbon black). 

As already reported in Table 6, the solubility of phosphazene polymers is strongly influenced by the nature of the substituent groups attached at the phosphorus atoms along the -P=N- skeleton. Water-solubility, for instance, can be induced in polyphosphazenes by using strongly polar substituents (e.g. methylamine [84], glucosyl [495], glyceryl [496], polyoxyethylene mono-methylether [273] or sulfonic acid [497,498] derivatives), or may be promoted by acids or bases when basic (amino substituents like ethylamine [499]) or acid (e.g. aryloxy carboxylate [499] or aryloxy hydroxylate [295]) substituents are exploited. 

Effects due to the addition of water-soluble polymers (polyoxyethylene glycol, polyacrylamide, and polyvinyl alcohol) on water/AOT/decane w/o microemulsions have been reported [190],... 

Argillaceous formations are very reactive in the presence of water. Such formations can be stabilized by bringing them in contact with a polymer solution with hydrophilic and hydrophobic links [101-104]. The hydrophilic portion consists of polyoxyethylene, with hydrophobic end groups based on isocyanates. The polymer is capable of inhibiting the swelling or dispersion of the argillaceous rock resulting from its adsorptive and hydrophobic capacities. 

Isolated unperturbed polyoxyethylene chains have been simulated on the 2nnd lattice [154], The literature contains RIS models for a large number of polyethers [124], and it is likely that most of these chains could be mapped onto the 2nnd lattice with little difficulty. It is also likely that the work on PP [156,158] can be extended to other vinyl polymers, such as poly(vinyl chloride). This capability should permit the construction and complete equilibration of amorphous poly(vinyl chloride) cells larger than those described to date. They may be large enough to address issues arising from the weak crystallization reported for these systems [174]. 

Finally, we have studied the reaction of amino-terminated polyoxyethylenes with the poly(vinylbenzyl chloride) latex (18). The rate of this reaction was found to be independent of the length of the chain carrying the terminal amine. Attachment of these chains stabilized the latex against coagulation, in analogy with the "steric stabilization" produced by adsorbed polymer chains (19 ). ... 

In many polymerizations cyclic material is produced by a concurrent backbiting reaction as linear polymer is formed. For example dioxan Is formed In the cationic polymerization of ethylene oxide to polyoxyethylene, and polyoxyethylene can be degraded to... 

Favretto and Tunis [198] extracted polyoxyethylene alkyl phenyl ethers as picrates into an organic solvent, complexed the polymer with sodium ion, and measured the absorption complex. This is one of the few specific methods available. 

Targeting Hgands can be attached to the microbubble directly (Fig. 12 A) or via a flexible polymer spacer arm (e.g., polyoxyethylene. Fig. 12 C). Use of the spacer arm may allow for tighter binding in some situations. When the detachment force of the targeted microbubble removal from the receptor-coated surface was measured, microbubbles with spacer-ligand construct demonstrated superior retention as compared with the bubbles where the ligand was connected directly to the lipid anchor, without a spacer [92]. 

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