The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2003
Filed:
Jul. 31, 2000
Applicant:
Inventors:
Kira Fries, Neunkirchen, DE;
Lisong Hou, Shanghai, CN;
Marion Pietsch, Laufersweiler, DE;
Martin Mennig, Quierschied, DE;
Helmut Schmidt, Saarbruecken-Guedingen, DE;
Assignee:
Institut für Neue Materialien gemeinnützige GmbH, Saarbrücken, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 7/720 ; G02B 5/23 ; B05D 5/06 ; B05D 3/00 ;
U.S. Cl.
CPC ...
C08G 7/720 ; G02B 5/23 ; B05D 5/06 ; B05D 3/00 ;
Abstract
A photochromic coating composition contains a silicon-containing precondensate derived from a hydrolysable silane containing a polymerizable functional group on a hydrolysis-stable radical, a photochromic dye, a stabilizer, and nanoscale particles. The coating composition, when applied to transparent plastic and glass substrates and cured, gives a coating having high light stability and good scratch resistance.