US 8,133,962 B2 · Ink composition for color filter and color filter

Abstract

A heat-curable ink composition and a color filter produced using the ink composition are provided. The ink composition and the color filter are highly resistant to heat and chemicals due to the use of a polyester resin prepared by polycondensation. In addition, unreacted anhydride groups are removed using a monohydric alcohol in the preparation of the ink composition to make the ink composition and the color filter very stable during storage.

Claims14

Dependent claims

A heat-curable ink composition comprising a binder resin, a pigment, a polyfunctional monomer, a thermal polymerization initiator and a solvent wherein the binder resin is a polyester resin having the structure of Formula 1:

wherein X is a tetravalent group derived from a polybasic acid anhydride, each R1 is a hydrogen atom or a methyl group, and R2 is selected from methyl and ethyl groups, n wherein n represents the degree of polymerization by weight average molecular weight in the range of 1000 to 200,000.

Dependencies are inferred from the claim text.

Facts

Application

12/448,847Filed 26 Aug 2008

Priority

KR 10-2007-00996384 Oct 2007

Published

US 2010/0179294 A115 Jul 2010

Granted

13 Mar 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

G02B 5/223
Absorbing filters: containing organic substances, e.g. dyes, inks or pigments
C09D 11/104
Containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds: polyesters
G02B
Optical elements, systems or apparatus
C09D
Coating compositions

Ink composition for color filter and color filter

Life of this patent

Ink composition for color filter and color filter

Life of this patent

Abstract

Claims14