Invention Grant
- Patent Title: Vinyl acetate binders in an above-critical pigment volume concentration coatings composition
-
Application No.: US15329736Application Date: 2014-07-30
-
Publication No.: US09834697B2Publication Date: 2017-12-05
- Inventor: James C. Bohling , Junyu Chen , Edwin Nungesser , Zhen Qian , Tao Wang
- Applicant: Rohm and Haas Company , Dow Global Technologies LLC
- Applicant Address: US PA Philadelphia US MI Midland
- Assignee: Rohm and Haas Company,Dow Global Technologies LLC
- Current Assignee: Rohm and Haas Company,Dow Global Technologies LLC
- Current Assignee Address: US PA Philadelphia US MI Midland
- Agent Reid S. Willis
- International Application: PCT/CN2014/083285 WO 20140730
- International Announcement: WO2016/015236 WO 20160204
- Main IPC: C09D133/06
- IPC: C09D133/06 ; C09D143/02 ; C08F220/10 ; C08F230/02 ; C09D133/04

Abstract:
The present invention is an above-critical coating composition comprising an aqueous dispersion of polymer particles, pigment particles, and extender particles wherein the polymer particles comprise, in a single phase and based on the weight of the polymer particles, from 35 to 79.9 weight percent structural units of vinyl acetate and from 0.1 to 6 weight percent structural units of a phosphorus acid monomer or a salt thereof, wherein the polymer particles have a particle size by dynamic light scattering of from 250 nm to 500 nm. The above-critical composition shows surprising improvements in hiding with increasing particle size of the polymer particles.
Public/Granted literature
- US20170210933A1 VINYL ACETATE BINDERS IN AN ABOVE-CRITICAL PIGMENT VOLUME CONCENTRATION COATINGS COMPOSITION Public/Granted day:2017-07-27
Information query
IPC分类: