Nail color coating system

Abstract

A nail polish composition containing a crosslinkable coating composition. The composition comprises ingredient A that has at least two protons that can be activated to form a Michael carbanion donor; ingredient B that functions as a Michael acceptor having at least two ethylenically unsaturated functionalities each activated by an electron-withdrawing group; and a carbonate initiator of Formula (1)wherein R7 is selected from hydrogen, a linear or branched substituted or unsubstituted alkyl group having 1 to 22 carbon atoms; 1 to 8 carbon atoms; 1 to 3 carbon atoms; and An+ is a cationic species or polymer and n is an integer equal or greater than 1 with the proviso that An+ is not an acidic hydrogen; at least one colorant independently selected from the group consisting of (i) a dye; (ii) an inorganic pigment; or an (iii) a lake; and optionally further comprising ammonium carbamate (H2NR8R9+—OC═ONR8R9), wherein R8 R9 are each independently selected from hydrogen, a linear or branched substituted or unsubstituted alkyl group having 1 to 22 carbon atoms; 1 to 8 carbon atoms; 1 to 3 carbon atoms.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority benefit from U.S. Provisional Patent Application 62 / 518,791 filed Jun. 13, 2017 which is incorporated by reference herein in its entirety.FIELD OF THE INVENTION[0002]The invention provides for a crosslinkable composition for use in nail coating compositions containing dyes, inorganic pigments or lakes.BACKGROUND[0003]The coatings industry continues to develop new chemistries as performance requirements for decorative and functional coatings evolve. Drivers for change are varied and these can include: regulatory controls to reduce VOC emissions, concerns about toxic hazards of coating raw materials, a desire for cost reduction, commitments to sustainability, and a need for increased product effectiveness.[0004]UV nail gel coatings have gained rapid popularity with fashion conscious individuals who apply nail polish to fingernails or toenails to decorate and protect nail plates. UV nail gels can produce coat...

AI Technical Summary

Benefits of technology

The present invention provides a nail polish composition that includes a crosslinkable coating composition containing an ingredient A that has at least two protons that can be activated to form a Michael carbanion donor, an ingredient B that functions as a Michael acceptor with at least two ethylenically unsaturated functionalities each activated by an electron-withdrawing group, and a carbonate initiator of Formula (1). The composition also includes a dye, an inorganic pigment, or a colorant independently selected from the group consisting of D&C Red 21, D&C Red No. 22, D&C Red No. 30, D&C Red No. 40, D&C Black No. 2, D&C Yellow No. 5, D&C Green No. 5, Annatto, and Caramel. The composition can further include ammonium carbamate. The inorganic pigment can be selected from the group consisting of red iron oxide, yellow iron oxide, titanium dioxide, brown iron oxide, chromium oxide green, ultramarine blue, ultramarine pink, black iron oxide, bismuth oxychloride, aluminum powder, manganese violet, mica, and combinations thereof. The dye can be selected from the group consisting of D&C Red 21, D&C Red No. 22, D&C Red No. 30, D&C Red No. 40, D&C Black No. 2, D&C Yellow No. 5, D&C Green No. 5, Annatto, and Caramel. The ingredient A can be selected from the group consisting of compounds, oligomers, or polymers containing a malonate group or an acetoacetate group. The ingredient B can be selected from the group consisting of acrylates, fumarates, maleates, and combinations thereof. The composition can further include a lake. The patent text provides various options for ingredients and combinations to create a nail polish composition with desired properties.

Problems solved by technology

UV nail gel coatings can easily last for two weeks or more and still look like new whereas conventional nail polishes are easily scratched and will chip or peel from the natural nail in one to five days.

However, conventional nail polish is easily removed with solvent whereas it can take some effort to remove a fully cured UV nail gel from the nail surface.

An expensive UV light also is required for UV nail gel application and this has limited the success of UV nail gels in the mass market for home use.

This limits the pot life, working time and general use as a coating.

However, malonate esters are known to be susceptible to base hydrolysis, particularly when water is present.

The hydrolysis product furthermore can result in undesirable destruction of base catalyst by means of formation of malonate salt; a reaction which is cloaked as longer pot life and gel time.

Presence of water can also be quite problematic in certain coatings applications.

Wood grain raising is a significant problem when water is present in wood coatings; water penetrates into wood, which causes swelling and lifting of fibers and this leaves a rough surface.

Water also can cause flash rust, i.e. appearance of rust spots on a metal surface during drying of newly applied paint that contains water.

Longer term rust formation in terms of corrosion may also be a problem when dealing with formulations that contain water.

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