Patent Picks—Multipurpose Polymers, Improving Foam, Surfactant-containing Films and More

By: Rachel Grabenhofer

Posted: June 14, 2011

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The test method is appropriate for testing ingredients such as preservatives, osmotic agents, surfactants, buffer, etc; they may also comprise any emulsion, solution or suspension including active ingredients or formulations that can be applied on the eye surface, such as eye drops, ointments, creams, etc.

Polyetheramide compositions
US Patent Application 20110136989
Publication date: June 9, 2011
Assignee: Akzo Nobel N.V.

This invention describes ethanol-soluble or ethanol-dispersible polyetheramide polymers that have a percent elongation to break of less than 100%. The polymers are formed from a reaction mixture comprising at least one or more poly(alkyleneoxy) diamines and one or more diacids. The mixture also can optionally include one or more aliphatic diamines in addition to the one or more poly(alkyleneoxy) diamines.

The polyetheramide polymers reportedly exhibit good performance and aesthetic results while meeting environmental and regulatory requirements. They may be applied in personal care applications such as hair fixative compositions such as hair spray. Performance benefits include a smooth and soft feel, humidity resistance, low tack, easy combing, low flake, moderate pH and easy removal by shampooing.

O/W emulsion containing a hydrophilic polymer and a semi-crystalline polymer (to reduce surfactant use)
US Patent Application 20110136920
Publication date: June 9, 2011
Assignee: L'Oréal