Titanium dioxide pigments and manufacturing method
US8840719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2011 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Oct 23, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a coated inorganic oxide pigment. The inventive coated inorganic oxide pigment comprises an inorganic oxide base pigment, a porous inorganic coating formed on the base pigment, and a dense inorganic coating formed on the base pigment. The porous inorganic coating and dense inorganic coating each consist essentially of a material selected from the group consisting of silica and alumina. In another aspect, the invention provides a method of manufacturing a coated inorganic oxide pigment. In yet another aspect, the invention provides a polymer composition comprising a base polymer, and a coated inorganic oxide pigment admixed with the base polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.