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. 22, 2013
Filed:
Mar. 08, 2010
Steven E. Bowles, Pittsburgh, PA (US);
Anu Chopra, Pittsburgh, PA (US);
Randy E. Daughenbaugh, Monroeville, PA (US);
Dennis L. Faler, North Huntingdon, PA (US);
M. Frank Haley, Glenshaw, PA (US);
Paul H. Lamers, Allison Park, PA (US);
Yunyi LU, Monroeville, PA (US);
Kevin J. Stewart, Murrysville, PA (US);
Cathy A. Taylor, Allison Park, PA (US);
Feng Wang, Export, PA (US);
Elizabeth A. Zezinka, Cranberry Township, Butler County, PA (US);
Steven E. Bowles, Pittsburgh, PA (US);
Anu Chopra, Pittsburgh, PA (US);
Randy E. Daughenbaugh, Monroeville, PA (US);
Dennis L. Faler, North Huntingdon, PA (US);
M. Frank Haley, Glenshaw, PA (US);
Paul H. Lamers, Allison Park, PA (US);
Yunyi Lu, Monroeville, PA (US);
Kevin J. Stewart, Murrysville, PA (US);
Cathy A. Taylor, Allison Park, PA (US);
Feng Wang, Export, PA (US);
Elizabeth A. Zezinka, Cranberry Township, Butler County, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
Described are various methods of producing non-aqueous dispersions of photosensitive polymeric microparticles, comprising: (a) preparing one or more aqueous dispersions of a polymerizable component, at least one of which contains a photosensitive material and, wherein the polymerizable components comprise at least one hydrophilic functional group and/or at least one hydrophobic functional group; (b) subjecting the dispersion of (a) to conditions sufficient to form microparticles; (c) at least partially polymerizing the polymerizable component; (d) combining the dispersion with an organic continuous phase comprising an organic solvent; (e) removing water from the dispersion such that the final water content of the non-aqueous dispersion is less than 30 percent by weight; wherein e) is performed before or after d); and (f) reacting any acid functional groups on the surface of the microparticles with a reactive material having at least one epoxy functional group, at least one thiocarbonylthio functional group, at least one alkoxyamine functional group, or at least one halide functional group.