Polyurethane-58

¿Qué es?

Polyurethane-58 is a complex polymer made by reacting polytetramethylene ether glycol, 2,2-dimethylolpropionic acid and meta-tetramethylenexylenediisocyanate to form a prepolymer. The prepolymer is dispersed in water with 2-dimethylamino-2-methylpropanol as neutralizer and chain-extended with ethylenediamine.

¿Qué hace?

Polyurethane-58 aparece en el inventario UE de ingredientes cosméticos con las siguientes funciones declaradas:

• Film forming

  forms a thin continuous film on skin, hair, or nails — used in long-wear makeup, sunscreens, and hairsprays

• Hair fixing

  holds hair in a desired style, typically through a flexible film coating each strand

• Plasticiser

  adds flexibility to film-forming polymers, e.g. in nail polish or mascara

• Skin conditioning

  improves the appearance, feel, and condition of skin

• Skin protecting

  helps shield skin from external environmental factors

Estado regulatorio en la UE

Polyurethane-58 está permitido en productos cosméticos en la Unión Europea bajo el Reglamento 1223/2009. No está sujeto a una restricción de Anexo específica en el momento de la redacción.

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• 4,4'-Isopropylidenediphenol/epichlorohydrin Copolymer film forming