18285565. USE OF POLYETHERS FOR PIGMENT DISPERSIONS simplified abstract (BASF SE)
Contents
USE OF POLYETHERS FOR PIGMENT DISPERSIONS
Organization Name
Inventor(s)
Ahmet Uener of Ludwigshafen (DE)
Achim Fessenbecker of Ludwigshafen (DE)
USE OF POLYETHERS FOR PIGMENT DISPERSIONS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18285565 titled 'USE OF POLYETHERS FOR PIGMENT DISPERSIONS
The present invention involves using a polymer containing acid groups to stabilize an aqueous inorganic pigment slurry.
- The polymer contains polyether groups of the structural unit (I) *—U—X-(AlkO)—W (I), where U is a chemical bond or an alkylene group with 1 to 8 carbon atoms, X is oxygen or an NR group, n is an integer in the range of 3 to 300, Alk is C-C-alkylene, and W is hydrogen, C-C-alkyl, or aryl radical.
- The inorganic pigment slurry can be titanium dioxide, calcium hydroxide, ultrafine precipitated calcium carbonate (PCC), or ground calcium carbonate (GCC).
- The invention provides pigment slurries with improved viscosity and stability over time.
Potential Applications: - Paint and coating industries - Paper manufacturing - Cosmetic and personal care products
Problems Solved: - Instability of inorganic pigment slurries - Inconsistent viscosity in pigment slurries
Benefits: - Enhanced stability of pigment slurries - Improved viscosity control - Extended shelf life of pigment slurries
Commercial Applications: Title: "Polymer-based Dispersant for Stabilizing Inorganic Pigment Slurries" This technology can be used in various industries such as paints, coatings, paper manufacturing, and cosmetics. It offers improved stability and viscosity control for pigment slurries, leading to better product quality and performance in end-use applications.
Questions about the technology: 1. How does the polymer containing acid groups contribute to stabilizing inorganic pigment slurries? 2. What are the specific advantages of using this dispersant compared to traditional stabilizing agents?
Original Abstract Submitted
The present invention relates to the use of a polymer containing acid groups as a dispersant for stabilising an aqueous inorganic pigment slurry, wherein the polymer containing acid groups comprises polyether groups of the structural unit (I) *—U—X-(AlkO)—W (I) where * indicates the bonding site to the polymer containing acid groups. U represents a chemical bond or an alkylene group having 1 to 8 carbon atoms. X is oxygen or an NRgroup, n is an integer with a mean, based on the polymer containing acid groups, in the range from 3 to 300, Alk is C-C-alkylene, where Alk may be the same or different within the (Alk-O)group, W is a hydrogen, C-C-alkyl or aryl radical or is the Y—F group where Y is a linear or branched alkylene group which has 2 to 8 carbon atoms and may bear a phenyl ring, F is a nitrogen-bonded 5- to 10-membered nitrogen heterocycle which may have, as ring members, as well as the nitrogen atom and as well as carbon atoms, 1, 2 or 3 additional heteroatoms selected from oxygen, nitrogen and sulphur, where the nitrogen ring members may have an Rgroup, and where 1 or 2 carbon ring members may be in the form of carbonyl groups, Ris hydrogen, C-C-alkyl or benzyl, and Ris hydrogen, C-C-alkyl or benzyl, wherein the inorganic pigment slurry is selected from the group consisting of titanium dioxide slurry, calcium hydroxide slurry, ultrafine precipitated calcium carbonate (PCC) slurry and ground calcium carbonate (GCC) slurry. The invention provides pigment slurries having improved viscosity characteristics together with improved stability over time.
