Coloring pigment granulates and method for producing the same
US6824604B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | May 4, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to coloring pigment granulates and a method for producing the same. The aim of the invention is to provide a granulate and a method for economically producing the same. The granulate disintegrates very quickly once added to a building material that is to be colored. To this end, the granulates are comprised of granulate cores which do not contain binding agents, which have a granular size ranging from 0.1 to 8 mm and which are enclosed by an enveloping layer made of a material that can be broken down. In addition, the granulates have a moisture content <30% and the granulates that do not contain binding agents are produced in a pregranulator, are compacted immediately after granulation and are subsequently subjected to a screening process. Lastly, the useful granular fraction that has been separated out during the screening process is enclosed with an enveloping material. The invention relates to coloring pigment granulates for coloring building materials, especially for coloring concrete, and to a method for producing coloring pigment granulates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.