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:
May. 06, 2014
Filed:
Apr. 05, 2011
Ward T. Brown, North Wales, PA (US);
Ward T. Brown, North Wales, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
An opacifying particle including a certain pigment particle at least partially encapsulated in a polymeric shell having a calculated thickness of from 35 nm to 200 nm, the polymeric shell including at least a first polymer phase and a second polymer phase, wherein the first polymer is substantially in contact with the surface of the pigment particle providing a calculated shell thickness of at least 25 nm and wherein the first polymer has a refractive index of at least 0.03 units less than that of the second polymer is provided. Further provided is a composition including certain pigment particles at least partially encapsulated in a shell of a first polymer having a calculated thickness of from 25 nm to 200 nm, and the encapsulated pigment particles in contact with a second polymer, wherein the first polymer has a refractive index of at least 0.03 units less than that of the second polymer.