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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No:
1459/MAS/1997A
(22) Date of filing of Application:02/07/1997 (43) Publication Date: 09/06/2006
(54) Title of the invention:
A PEARLESCENT PIGMENT AND A
METHOD OF PRODUCING THE SAME
(51)International classification:C 09 C
01/00
(31) Priority Document No.08/867,589
(32) Priority Date:02/06/1997
(33) Name of priority country:U.S.A
(87) WIPO No. :
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Applcation No.:
Filed on:
(71) Name of Applicant
ENGLEHARD CORPORATION,
Address of Applicant:
P.O.B. 770-0770, 101 WOOD AVENUE,
ISELIN, NJ 08830,
U.S.A
(72) Name of the Inventor(s):
WILLIAM J SULLIVAN
PATRICIA ELLIOT
DANA FLEMING
(57)Abstract
A pearlescent pigment comprises C glass flakes having a layer comprising rutile titanium dioxide or iron oxide
thereon. A hydrous layer of the rutile forming titanium dioxide or iron oxide is formed on the glass flakes and the
resulting coated flakes are calcined. Titanium dioxide or iron oxide coated glass flakes are further coated with
absorption pigments.
The Patent Office Journal 09/06/2006 10820