Abstract

The present invention relates to a process comprising the steps of a) contacting an aqueous dispersion of a TiO 2 slurry containing adsorbing dispersant with an adsorbing latex to form a mixture, wherein the pH of the mixture of the TiO 2 slurry and adsorbing latex are sufficiently high to inhibit interaction between the TiO 2 and the adsorbing …

Legal parties

Party
Inventors (applicants): Qing Zhang, James Bohling, Wei Gao
Assignees (initial): Rohm and Haas Company (Philadelphia, US)
Agents: Reid S. Willis (attorney)

The application was examined by Hannah Pak (USPTO dept. 1764)

Claims

  • 1. A process for preparing a composite comprising the steps of: …
  • 2. The process of claim 1 wherein prior to step a) the pH of the TiO 2 slurry …
  • 3. The process of claim 1 wherein the adsorbing latex is an acrylic, a styrene-acrylic …

Cited documents

Patents

  • Emmons et al. US 6080802 A, Jun. 1, 2000
  • Knapp et al. US 3772046 A / 106/448, Nov. 1, 1973

Description

Background of the Invention

The present invention relates to a process for improving hiding efficiency in pigmented paints. Latex binders that adsorb to TiO 2 are known to form composites with TiO 2 , leading …

Detailed Description of the Invention

The present invention is a process comprising the steps of a) contacting an aqueous dispersion of a TiO 2 slurry containing adsorbing dispersant with an adsorbing latex, wherein the pH of the mixture …

Examples

The following examples are for illustrative purposes only and are not intended to limit the scope …

More details about Process for Improving Hiding Efficiency in Pigment Paints

Miscellaneous patent data

The grant number is 08546467 (publication number), the published agent's name is Willis Reid S., numbered 13/649,611 (application), the known inventor's name is Wei Gao, the inventor's city is Fort Washington, state - PA, the application was published on Oct. 11, 2012, the primary classification Admixing a nonreactive additive ingredient in the form of a slurry, dispersion, or suspension (liquid-solid); said slurry dispersion or suspension containing no solid polymer or SICP has been designated to the document, the patent was granted on Oct. 1, 2013, the assignee company is Rohm and Haas Company located in Philadelphia (US), developed by James Bohling et al., was examined by 1764 USPTO department, the examiner - Hannah Pak, particularly claims a process for preparing a composite comprising the steps of…, similar classification categories are Silicon-containing compounds, Non-thrombogenic, Organic nitrogen compound contains N-heterocycle, cyclic polycarboxylic acids, or derived from carboxylic acid or salt thereof, or organic sulfur material, Product having elemental carbon, Alcohols, Metal alcoholates, oxygen or nitrogen in the ring, Friction element composition or process of preparing, Five-membered rings, 7 claims comprise the protection scope, the invention is titled Process for Improving Hiding Efficiency in Pigment Paints, the claim number 1 is selected as exemplary, the assignee is categorized as a United States company.

Invention classification information

The invention is classified under Admixing a nonreactive additive ingredient in the form of a slurry, dispersion, or suspension (liquid-solid); said slurry dispersion or suspension containing no solid polymer or SICP, of metals, Mixing with titanium dioxide material having numerical limitations other than amount, e.g., included herein are particle size, etc., composition or product thereof, DNRM, Contacting with specified element or with specified inorganic compound other than water, elemental nitrogen, air and the inert gases (Group VIII A), Product having a solid synthetic polymer or solid polymer-forming system, Influencing the physical, e.g. the dyeing or printing, properties of dyestuffs without chemical reaction, e.g. by treating with solvents, Process features in the making of dyestuff preparations, Dyestuff preparations of a special physical nature, e.g. tablets, films. The designated search classifications include Process of forming a composition having two or more solid materials having defined physical dimensions or surface areas; or composition containing same, Admixing a nonreactive additive ingredient in the form of a slurry, dispersion, or suspension (liquid-solid); said slurry dispersion or suspension containing no solid polymer or SICP, From reactant-containing atom other than O, N, C, halogen, or hydrogen, Mixing with titanium dioxide material having numerical limitations other than amount, e.g., included herein are particle size, etc., composition or product thereof, DNRM, Product having a solid synthetic polymer or solid polymer-forming system, Contacting with specified element or with specified inorganic compound other than water, elemental nitrogen, air and the inert gases (Group VIII A), From carboxylic acid or ester thereof monomer.

Patent details
Publication number 08546467
Publication date Oct. 1, 2013
Kind code B2
Application number 13/649,611
Application date Oct. 11, 2012
Application type U
Application series code 13
National classification 523/333
Total number of claims 7
Exemplary claims 1
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