Composite pigments containing calcium phosphate and method for their manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 11, 2020
Grant Date -
Jun 18, 2015
app pub date -
Dec 8, 2014
filing date -
Dec 13, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to composite pigment particles containing calcium phosphate, their manufacture and their use in coatings, plastics and laminates. The composite pigment particles contain titanium dioxide pigment particles and precipitated calcium phosphate. In one embodiment, the composite pigment particles additionally contain an inorganic and/or organic filler as an extender, preferably selected from the group comprising Ca, Ca—Mg and Mg carbonates, natural and synthetic silicon dioxide and oxides. The composite pigment particles are manufactured in a combined process of dispersion and precipitation. Depending upon the combination selected, use of composite titanium dioxide pigment particles of the invention can provide improved optical properties such as tinting strength or permits pigment savings with little to no loss of optical properties. In particular, the composite pigment particles of the invention can be used to replace part or all of the titanium dioxide contained in the user's system.
First Claim
Other Claims data not available
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International Classification(s)
- 2014 Application Filing Year
- C09C Class
- 223 Applications Filed
- 193 Patents Issued To-Date
- 86.55 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C09C Class
- 0 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 11, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 11, 2032 |
