Abstract: Synthetic phospholipid compounds and their method of preparation, which compounds are phosphatidylethanolamine polycarboxyl polyalkylene glycols and are prepared by the reaction of a phosphatidylethanolamine, a polycarboxylic acid, such as succinic or glutaryl anhydride, and a polyalkylene glycol, such as polyethylene glycol.
Abstract: Liquid magnetic compositions suitable for use in coating a substrate, such as a tape or a disc, for the preparation of magnetic memory devices, which liquid composition comprises finely-divided magnetic particles, optionally a binder for the magnetic particles, a dispersing agent for the magnetic particles and a volatile liquid solvent, the dispersing agent comprising a synthetic phosphatidyl ethanolamine polymer.
Abstract: Novel synthetic phospholipid compounds, the compounds having the structural formula: ##STR1## where X is a hydrogen or alkyl group, n can vary from about 0 to 200, m can vary from 2 to 10, and R.sub.1 and R.sub.2 are saturated or unsaturated acyl radicals.
Abstract: A method of preparing a controlled-release pharmaceutical compound for oral administration, which pharmaceutical compound is subject to enzymatic hydrolysis on oral administration, which method comprises encapsulating the pharmaceutical compound with a synthetic phosphatidyl compound having a modified polarhead moiety which increases the resistance of the phosphatidyl compound to phospholipase C hydrolysis.
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