Maro Publications

Pigments

Patent Abstracts

*9/14/2012
from 7/5/2012

Maro Topics

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Patents with Abstracts

2. 8,257,980  
Sensory pigments used on food, packaging, paper and pharmaceutical and electronic products
 
Schalkhammer, Austria, he invention relates to sensory pigments for use in foods, packagings, pharmaceutical products, paper and electronic products. Said pigments are characterized by the fact that a chemically reactive polymer layer that is 5 to 500 nm thick is applied to metallic particles, metal particles or particles containing at least one metal-oxygen compound, said particles being preferably platelet or fiber-shaped, and a layer of chromophore particles that are between 1 and 100 nm in size is applied to the polymer layer, said particles having a color that is visible to the human eye and that changes after contact with an analyte (RDC 9/14/2012)

1. 8,211,225 
Magnetic pigments and process of enhancing magnetic properties
 
Hollman and Schottland of Sun Chemical Corp., New Jersey, enhanced the magnetic properties of  pearlescent pigments.  The pearlescent pigment has a layer with regions of .gamma.-Fe2O3 and regions of .alpha.-Fe2O3.  The magnetic properties of a pearlescent pigment may be enhanced by the steps of: providing a platelet pigment with a layer of Fe2O3, with a magnetic susceptibility less than 0.1.times.10-5 m3/kg; reducing some or all of the Fe2O3 to Fe3O4; and oxidizing some or all of the Fe3O4 to .gamma.-Fe2O3. The color difference (.DELTA.E*) between the provided pigment and the resultant pigment is not more than about 5. (RDC 7/5/2012)

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Interested!!
Bookmark this page to follow future developments!.
(RDC 6/5/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

Maro Polymer Links
Tel: 610 363 9920
Fax: 610 363 9921
E-Mail: cornelrd@bee.net  

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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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** Date of latest addition; date of first entry is 7/5/2012.