Lactam-containing emulsifier systems for water-in-oil emulsion polymers
AssigneeISP Investments Inc.
InventorJui-Chang Chuang
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Abstract
An emulsifier for an inverse emulsion polymerization to be produce a water-soluble polymer composed of a mixture of a non-ionic oil-soluble surfactant and an N-alkyl lactam or polymer of a N-vinyl lactam. The emulsifier is extremely useful in polymerizations wherein a water-in-oil polymeric product is obtained since the product is easily inverted to a stable oil-in-water emulsion. Methods for polymerization processes using the inventive emulsifier as well as emulsions obtained therefrom are also disclosed.
Claims13
An emulsifier for an inverse emulsion polymerization to produce a water soluble polymer consisting essentially of a mixture of a nonionic oil-soluble surfactant and a compound selected from the group consisting of an N-alkyl lactam and an alkylated polymer of an N-vinyl lactam, and combinations thereof, the amount of surfactant to said compound being such that the HLB value of the mixture is not greater than about 7.
Dependencies are inferred from the claim text.