Abstract: An aqueous semi-continuous emulsion polymerization process for producing bimodal polymer particles in volumes large than a single batch size is provided. A bimodal polymer composition prepared by the process of carrying out an aqueous semi-continuous emulsion polymerization is also provided.
Type:
Grant
Filed:
December 17, 2003
Date of Patent:
June 14, 2005
Assignee:
Rohm and Haas Company
Inventors:
Thomas George Throne, Owen Clifford Hallerud
Abstract: A paper having an improved print quality comprises a paper substrate having a surface with a surface roughness of less than 6 microns and a surface gloss of 5-80% which surface has been coated with a light-weight, low solids content, top coat. The top coat may comprise (i) a rheology modifier/binder component and at least one pigment or (ii) at least one binder coated pigment. The top coat provides a significant improvement to the delta gloss of the so-treated paper.
Type:
Grant
Filed:
March 6, 2003
Date of Patent:
March 8, 2005
Assignee:
Rohm and Haas Company
Inventors:
Barrett Richard Bobsein, James Tinney Brown, Zhenwen Fu, Janet Drobits Windisch
Abstract: An improved aqueous coating composition which includes a bimodal copolymer. Methods of using an aqueous coating composition which includes a bimodal copolymer.