Oil and water emulsions containing alkylphosphoryl choline or alkylglycerophosphoryl choline surfactants are disclosed. The surfactants have the following general structures: ##STR1## In the above general structures, R.sub.1, R.sub.2 or R.sub.3 is alkyl, alkenyl, fluoroalkyl and alkenyl; and PC is the phosphoryl choline. The emulsions are useful as oxygen transport agents, artificial bloods or red blood cell substitutes. The emulsions are also useful as contrast agents for biological imaging by the modalities of nuclear magnetic resonance, x-ray and ultra sound.
本发明涉及含有烷基
磷酰
胆碱或烷基
甘油磷酰
胆碱表面活性剂的油
水乳液。该表面活性剂具有以下一般结构:##STR1## 在上述一般结构中,R.sub.1、R.sub.2或R.sub.3是烷基、烯基、氟烷基和烯基;PC是
磷酰
胆碱。该乳液可用作氧输送剂、人造血液或红细胞替代物。该乳液还可用作核磁共振、X射线和超声成像的
生物对比剂。