Nicholas J Crano

US Patent:

20010050356, Dec 13, 2001

Filed:

Jan 19, 2001

Appl. No.:

09/766554

Inventors:

John Crano - Murrysville MD, US
Nicholas Crano - Pittsburgh PA, US
Carol Knox - Monroeville PA, US
Michael Okoroafor - Export PA, US
Robert Smith - Murrysville PA, US
Rifat Tabakovic - Troy MI, US

International Classification:

G03C001/00

US Classification:

252/582000

Abstract:

Described are photochromic organic resin compositions and the impact resistant polymerizates and coating compositions made therefrom. The organic resin composition comprises the reaction product of at least one polyol having greater than 1.0 hydroxyl groups; at least one polyisocyanate having greater than 1.0 isocyanato groups; and at least one polyamine curing agent having greater than 1.0 amino groups. The polymerizates are made photochromic either by the addition of organic photochromic compounds to the reactants used to form the polymerizate or by methods that imbibe or transfer the photochromic compounds into the polymerizate. Optically clear photochromic and impact resistant articles such as ophthalmic lenses and articles having photochromic coatings prepared from the photochromic organic resin compositions are also described.

US Patent:

6180181, Jan 30, 2001

Filed:

Dec 14, 1998

Appl. No.:

9/211127

Inventors:

Christopher A. Verardi - Pittsburgh PA
Dennis L. Faler - Pittsburgh PA
Marvis E. Hartman - Pittsburgh PA
Nicholas J. Crano - Pittsburgh PA
Rodger G. Temple - Sarver PA
Victoria A. Trettel - Freeport PA

Assignee:

PPG Industries Ohio, Inc. - Cleveland OH

International Classification:

B05D 136
B05D 716

US Classification:

427409

Abstract:

The present invention provides methods for forming composite coatings on substrates including the steps of: (A) applying an aqueous primary coating composition to at least a portion of a surface of a substrate, the primary coating composition including: (1) at least one thermosettable dispersion including polymeric microparticles having functionality adapted to react with a crosslinking material, the microparticles including: (a) at least one acid functional reaction product of ethylenically unsaturated monomers; and (b) at least one hydrophobic polymer having a number average molecular weight of at least about 500; and (2) at least one crosslinking material, to form a substantially uncured primary coating thereon; (B) applying a secondary coating composition to at least a portion of the primary coating formed in step (A) without substantially curing the primary coating to form a substantially uncured secondary coating thereon; and (C) applying a clear coating composition to at least a portion of the secondary coating formed in step (B) without substantially curing the secondary coating to form a substantially uncured composite coating thereon.