ES2776892T3

A pigment particle composition, its method of manufacture and its use

Abstract

A particulate pigment composition comprising calcium carbonate particles and pigment particles, and optionally other components, such as dispersants, surface modifying agents and stabilizing agents or mixtures thereof, characterized in that at least part of the particles of calcium carbonate are carbonated in such a way that they bond together to form calcium carbonate structures that comprise at least one pigment particle, wherein the calcium carbonate particles are in the crystalline form of calcite or aragonite and are in external form at least primarily rhombic or rhombohedral, and whose calcium carbonate structures, together with the pigment particles, form pigment-carbonate aggregates of essentially opaque and stable calcium, the particles of calcium carbonate, which are carbonated so that they join together, forming an envelope, which at least partially encloses the bliss, at least one pigment particle, wherein the weight ratio between the pigment particles and the calcium carbonate particles is approximately 60:40 ... 10:90 and where more than 50% by weight of the Pigment forming part of the aggregate remain attached to the calcium carbonate particles when said particulate pigment composition is dispersed in water and dried.

ES2776892T3, drawing sheet 1
Sheet 1 of 6

Term

2.5 yearsto projected expiry

Projected expiry 9 March 2029, counted from filing; an application has no term until it is granted.

  1. Priority
  2. Filed
  3. Published
  4. Today
  5. Projected expiry

6 sheets

  1. Sheet 1
  2. Sheet 2
  3. Sheet 3
  4. Sheet 4
  5. Sheet 5
  6. Sheet 6