Cosmetic containers
OwnerKenneth Charles Wurtzel, Jeffrey Lawrence Daecherinventors
Life of this patent
Estimating the term…
Abstract
Containers for nail polish and other liquid cosmetics are produced with substantially transparent cyclo-olefin copolymers, preferably norbornene-ethylene copolymers, blended with tint modifiers having a tint or hue that opposes the tint imparted to the container by the primary cyclo-olefin copolymer. This produces a bottle with a significantly reduced tint, and displays nail polish, other liquid cosmetics and similar materials with less color distortion.
Claims19
A cosmetic container comprising a substantially transparent primary cyclo-olefin copolymer and a tint modifier, said tint modifier being present in an amount sufficient to give said container a Yellowness Index between about −0.2 and about +0.2.
A nail polish bottle comprising a cyclo-olefin copolymer having a glass transition temperature of at least about 160° C. and a tint modifier in a quantity sufficient to give said bottle a Yellowness Index of about −0.2 to about +0.2.
A method for producing cosmetic containers comprising:
- providing a cyclo-olefin copolymer;
- blending a coloring agent with said copolymer in an amount sufficient to give said container a comparative Yellowness Index of less than about +0.2;
- and
- molding said containers from said blended cyclo-olefin copolymer and coloring agent.
Dependencies are inferred from the claim text.