Carboxylated polyethylene

ATBN - amine terminated nitrile rubber X - Flory Huggins interaction parameter CPE - carboxylated polyethylene d - width at half height of the copolymer profile given by Kuhn statistical segment length DMAE - dimethyl amino ethanol r - interfacial tension reduction d - particle size reduction DSC - differential scanning calorimetry EMA - ethylene methyl acrylate copolymer ENR - epoxidized natural rubber EOR - ethylene olefin rubber EPDM - ethylene propylene diene monomer EPM - ethylene propylene monomer rubber EPR - ethylene propylene rubber EPR-g-SA - succinic anhydride grafted ethylene propylene rubber... 

Type Carboxylated polyethylene Appearance Light colored wax Density 0.974 g/cc Acid Number 40 mg KOH/g Softening Point 77C ASTM 62D... 

A second structural feature for interferon induction by polycarboxylates is the presence of negative charges. They may be placed in either alternate (PAA) or adjacent (pyran copolymer) position but should occur in a regular and dense sequence. The polyanionic character of the polymer appears to be a prerequisite for interferon induction, antiviral activity and antibacterial activity, since uncharged polymers such as dextran, polyacrylamide, non-carboxylated polyethylene analogues of pyran copolymers and incompletely oxidized amylose were devoid of any of these activities48,49,51,107). 

Sorption on membranes immobilized with azorhodanine reagents and sulfonitrophenol M [42], fibres of poly(acrylonitrile)-carboxylated polyethylene-polyamine [43] and a filter-paper containing chemically attached hexamethylenediamino groups [44] have recently been employed for separation and preconcentration of elements. 

Beryllium in tap water, dialysis fluids and alkali-metal salts was determined with Chrome Azurol S after preconcentration of the complex on a column packed with polyethylene powder [1]. Sorption preconcentration of Be on a fibrous sorbent (poly(acrylonitrile)-carboxylated polyethylene-polyamine) prior to the determination of metal with Arsenazo I in sea water was described [2]. 

Fig. 3 Polyethylene oligomers with terminal ligands useful in catalysis diphenylphosphi-nated polyethylene 6 [25] polyethyldiarylphosphite 7 [30] carboxylated polyethylene 8 [25, 31-33] a chiral polyethylene carboxylate 9 [34] polyethyltriarylphosphite 10 [35] polyethylene-bound benzo-15-crown-5 11 [36] polyethylene- -poly(ethylene glycol)-bound tetraethyl diethyleneamine 12 [38] and polyethylene-bound pyridyl ligand 13 [39]...

Neodymium derivatives of carboxylated polyethylene were obtained from oxidized polyethylene by the procedure ... 

Though Af-oxyl-immobilized silica gel 3c is easily prepared and used repeatedly [8], mechanical strength of the silica gel is not enough for practical use [9]. This method can be, however, easily expanded to polymer chemistry. A -Oxyl-modified polymers (partially carboxylated polyethylene (Fig. 5), polyethylene-polyacrylic acid copolymer (Fig. 6), or poly(p-phenylene-co-benzobisthiazole) (PBZT, Fig. 7), etc.) can be used as an absorbent [10, 11]. These polymer particles are tough enough and N-oxyl moiety is not lost by hydrolysis. 

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