Search International and National Patent Collections

1. (WO2018160339) ARCHITECTURAL COATING COMPOSITION CONTAINING HIGH RATIO SOLUBLE SILICATES

Pub. No.:    WO/2018/160339    International Application No.:    PCT/US2018/017427
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Fri Feb 09 00:59:59 CET 2018
IPC: C09D 5/00
Applicants: PQ CORPORATION
Inventors: RIBEIRO, Flavio Ernesto
DOS SANTOS FLOR, Ronaldo
BATISTA, Carlos Henrique
Title: ARCHITECTURAL COATING COMPOSITION CONTAINING HIGH RATIO SOLUBLE SILICATES
Abstract:
A water-based paint production process and product reduces costs by replacing at least a portion of the resin with high ratio soluble silicates having a SiO2:Na2O or SiO2:K2O weight ratio that is higher than 3.3 for sodium silicates and higher than 2.4 for potassium silicates. The high ratio soluble silicate is used as a co-binder for minimizing the costs involved with the use of resin in paint. Use of the high ratio soluble silicate maintains the scrub resistance of the paint and eliminates the need for a pH stabilizing agent, leading to a proportional reduction in the coalescing agent. Because of the complex structures formed by silicates of high weight ratio, the viscosity of the paints will increase, reducing the demand for thickeners. Replacing the organic resins with inorganic soluble silicates lowers the amount of volatile substances in paints, providing more environmentally friendly paint compositions.