Synthetic poiy

A number of potential drug carriers are described in the literature, e.g. polyphospha-zenes derivatives of poly(methacrylic acid) >, synthetic poIy(amino acids)polyvinyl analogs of nucleic adds , poly(ethylene oxide) copolymers of vinylpyrrolidone poly(amido-amines) and others. The structure of these polymers has been modified by the incorporation of hydrophobic units - >, sugar residues, sulfinyl groups to achieve, in a non-specific way, affinity for certain tissues. 

Hydrazine gel compns contg fuel metals (such as Al, Mg, Be, etc), microdimensional fibers (such as glass, asbestos, cellulose or synthetic) and thickeners, such as polyacrylamide, Na CM-celluIose, hydroxyethyl-cellulose, poly(vinyl)aIc, poiy(Me methacrylate), Thus a soft gel was prepd. It contained hydrazine 65.20, polyacrylamide 0.67, microglass fibers 0.80 Al powder 33 33%... 

PoIy(L-Iysine)-Based Copolymers Synthetic Strategies and Biomedical Applications 103... 

See also Coal and Coke. Forensic Sciences Paints, Varnishes, and Lacquers. Gas Chromatography Multidimensional Techniques Instrumentation Detectors Mass Spectrometry. Geochemistry Inorganic Soil, Major Inorganic Components Soil, Minor Inorganic Components Soil, Organic Components. Laser-Based Techniques. Poiy-mers Synthetic. Quaiity Assurance Internal Standards. 

Syndiotactic poiy(methyl methacryiate) Anionic living polymerization Mn = 2000 14500 M /Mn = 1.13-5.5 effect of synthetic variables on tacticity, molecular weight and distribution and yield discussed. [139,147]... 

PoIy(amino-acids).—Although poly(amino-acids) may have conformational advantages for catalysis the synthetic problems are greater than those of vinyl polymers. Furthermore the rate enhancements so far achieved are generally modest. ... 

PoIy(vinyI chloride) 1838 1931 Themroplastics (synthetic Cbo) Alkyl resiirs 191S Thtnnoa ta (coatmga)... 

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