US 10,138,390 B2 · Modified nano-silica and method for preparing the same, pigment dispersion and photosensitive resin composition

Abstract

The invention relates to the field of materials technology and provides a modified nano-silica and a method for preparing the same, a pigment dispersion and a photosensitive resin composition, so as to solve the problem that conventional nano-silica cannot crosslink with other polymeric materials, and pigment dispersions are apt to aggregate and have a poor film-forming property. The modified nano-silica according to the invention has unsaturated double bonds on the surface thereof and can crosslink with other polymeric materials, such that the pigment dispersion comprising the modified nano-silica can effectively prevent agglomeration and has a good film-forming property, and the photosensitive resin composition comprising the pigment dispersion can reduce the thermal expansion of a film made thereby, as well as the occurrence of shrinkage and collapse phenomena in the surface of the film, and enhance the heat-resistance, chemical-resistance, mechanical properties and abrasion-resistance of the film.

Claims13

Dependent claims

A pigment dispersion, characterized in that the pigment dispersion is prepared by dispersing a solute in a solvent and inducing a crosslinking reaction therein, and the average particle size of the solid particles in the pigment dispersion ranges from 40 nm to 100 nm;

and
the solute comprises:
based on 100% by mass of the pigment dispersion, 1% to 5% of modified nano-silica particles which have unsaturated double bonds grafted on the surface thereof and have an average particle size in the range of 5 nm to 50 nm, 3% to 6% of a dispersant, 2% to 6% of a binder resin, 10% to 20% of pigment, and 0.1% to 0.5% of a photoinitiator.

A photosensitive resin composition, characterized by comprising:

based on 100% by mass of the photosensitive resin composition, 30% to 40% of a pigment dispersion, 1.5% to 6% of an alkali-soluble resin, 2% to 5% of a polymerizable monomer, and 0.2% to 0.8% of a photoinitiator,
wherein the pigment dispersion is prepared by dispersing a solute in a solvent and inducing a crosslinking reaction therein, and the average particle size of the solid particles in the pigment dispersion ranges from 40 nm to 100 nm;
and
wherein the solute comprises:
based on 100% by mass of the pigment dispersion, 1% to 5% of a modified nano-silica particles which have unsaturated double bonds grafted on the surface thereof and have an average particle size in the range of 5 nm to 50 nm, 3% to 6% of a dispersant, 2% to 6% of a binder resin, 10% to 20% of pigment, and 0.1% to 0.5% of a photoinitiator.

2 more elements

Dependencies are inferred from the claim text.

Modified nano-silica and method for preparing the same, pigment dispersion and photosensitive resin composition

Life of this patent

Modified nano-silica and method for preparing the same, pigment dispersion and photosensitive resin composition

Life of this patent

Abstract

Claims13