Hair treatment process providing dispersed colors by light diffraction
US-9216144-B2 · Dec 22, 2015 · US
Composite powder having inorganic powder impregnated with porous polymer, cosmetic composition containing same, and method for preparing same
US10278903B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10278903-B2 |
| Application number | US-201515555863-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 24, 2015 |
| Priority date | Mar 13, 2015 |
| Publication date | May 7, 2019 |
| Grant date | May 7, 2019 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present invention relates to composite powder having enhanced water repellency and oil absorbency by means of even impregnation of inorganic powder particles with a super-water-repellent porous polymer. The composite powder prepared by means of a one-step spraying procedure of electro-spraying or spray drying, according to the present invention, shows super water repellency and maximized oil absorbency by means of increased porosity of porous polymethyl methacrylate (PMMA) and even impregnation with titanium dioxide (TiO2) nanoparticles.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composite powder for skin cover pigment having a porous polymer impregnated with an inorganic powder, wherein the porous polymer comprises one or more selected from the group consisting of poly(methyl methacrylate) (PMMA), poly(vinyl pyrrolidone) (PVP), poly(caprolactone) (PCL), and poly(L-lactic acid) (PLLA), and the inorganic powder comprises titanium dioxide (TiO 2 ), wherein the composite powder has a porosity of 50 to 70%, wherein the titanium dioxide has an average particle diameter of 200 to 300 nm, wherein the titanium dioxide is impregnated at a content of 30 to 70% by weight based on the total weight of the composite powder, and wherein the porous polymer has an average pore diameter of 15 to 500 nm. 2. The composite powder for skin cover pigment of claim 1 , wherein the composite powder has porous poly(methyl methacrylate) impregnated with titanium dioxide nanoparticles. 3. The composite powder for skin cover pigment of claim 1 , wherein the titanium dioxide is impregnated at a content of 50% by weight, based on the total weight of the composite powder. 4. The composite powder for skin cover pigment of claim 2 , wherein the porous poly(methyl methacrylate) has a specific surface area of 10 to 200 m 2 /g. 5. A cosmetic composition comprising the composite powder according to claim 1 . 6. A method for preparing a composite powder having a porous polymer impregnated with an inorganic powder according to claim 1 , wherein the composite powder is prepared by dispersing the inorganic powder in a porous polymer solution and spray-drying or electro-spraying the dispersed porous polymer solution.
Assignees
Inventors
Classifications
Preparations for oily skin · CPC title
Face or body powders for grooming, adorning or absorbing · CPC title
Make-up preparations; Body powders; Preparations for removing make-up · CPC title
Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95 · CPC title
The particulate/core comprising macromolecular material · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10278903B2 cover?
- The present invention relates to composite powder having enhanced water repellency and oil absorbency by means of even impregnation of inorganic powder particles with a super-water-repellent porous polymer. The composite powder prepared by means of a one-step spraying procedure of electro-spraying or spray drying, according to the present invention, shows super water repellency and maximized oi…
- Who is the assignee on this patent?
- Amorepacific Corp
- What technology area does this patent fall under?
- Primary CPC classification A61K8/85. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue May 07 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).