Stable cosmetic ink composition
US11857665B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2020 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Feb 6, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/87
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A cosmetic ink composition comprises a particulate material, a (meth)acrylic acid homopolymer or salt thereof, and a rheology modifier. The particulate material can have a Particle Size Distribution D50 of about 100 nm to about 2,000 nm. The (meth)acrylic acid homopolymer or salt thereof can have a weight average molecular weight of less than about 20,000 daltons. The rheology modifier can be selected from the group consisting of alkali swellable emulsion polymers, hydrophobically modified alkali swellable emulsion polymers, and combinations thereof. The cosmetic ink composition can have a first dynamic viscosity of greater than about 1,100 cP at a shear rate of 0.1 sec−1 measured at 25° C. and a second dynamic viscosity of less than about 100 cP at a shear rate of 1,000 sec−1 measured at 25° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.