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US 4,734,445 AGranted
Latex compositions capable of producing elastomers with hydrophilic surfaces
AssigneeThe Procter & Gamble Company
InventorsIsao Noda, Douglas F. Hager
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Abstract
Latex compositions suitable for applications requiring surface hydrophilicity are disclosed. The latexes can be used in liquid film-forming compositions which comprise: (1) a liquid phase such as water, water-miscible solvents and mixtures thereof; and (2) latex particles dispersed in the liquid phase. The particles comprise an elastomeric hydrophobic core with a hydrophilic "shell" which is integral with the core. When the liquid phase is removed, the particles are capable of forming an elastomeric film having a substantially permanent hydrophilic surface.
Claims2
A latex composition which comprises:
- (a) a liquid phase selected from the group consisting of water, water-miscible solvents, and mixtures thereof;
- and
- (b) from about 5 to about 50% by weight of latex particles dispersed in said aqueous phase, said particles comprising an elastomeric hydrophobic core and an outer hydrophilic shell attached to said core, said core comprising a polymer selected from the group consisting of butadiene, isoprene styrene, and mixtures thereof, and said shell comprising moieties L-X, wherein L comprises a hydrophobic hydrocarbyl group containing one or more unsaturated bonds and X is a polyoxyalkylene hydrophilic group.
Dependencies are inferred from the claim text.