PEL-LOK L61 is a block polymer consisting of a modest amount of polyethylene glycol reacted with a larger polypropylene glycol polymer, giving it a lower HLB. This polymer has terminal primary hydroxyl groups. It is used as a defoamer, emulsifier, dispersant, stabilizer, wetting agent and boundry lubricant for metalworking fluids, cosmetics, paper, textiles, dishwashing detergents, rinse aids and lubricant bases.