Chem. J. Chinese Universities ›› 1988, Vol. 9 ›› Issue (6): 640.

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The Relation of the Antifoaming Effects of the Polyoxyalkylene Ether Block Polymers and Their Stearate to the Content Percent of the Hydrophilic Group and Hydrophilic-Lipo-Philic Balance

Shi Mingli, Wang Diangang, Wang Huayuan, Sun Xunyun   

  1. Department of Chemistry, Shandong Normal University, Jinan
  • Received:1986-11-18 Online:1988-06-24 Published:1988-06-24

Abstract: The antifoaming effects of some polyoxyalkylene glycerol ethers (GPE) and their distearate (GPES-2) are studied. The best results are achieved by GPEwith hydrophibic groups of mol. Wt. 3500~4000 and 10% hydrophilic group content and HLB 0.8~1.5.The antifoaming effects of GPES-2 is higher than those of GPE. GPES-2 with 15~20% hydrophilic group content results in the highest antifoaming effects.

Key words: Antifoaming, Polyoxyalkylene ethers, Polyoxyalkylene stearate

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