Resin composition for pigment-containing insulating film, and use thereof
AssigneeKaneka Corporation
InventorYoshihide Sekito
Life of this patent
Estimating the term…
Abstract
According to a resin composition for a pigment-containing insulating film which resin composition contains at least a (A) binder polymer and (B) pigment-containing cross-linked polymer particles, it is possible to provide a resin composition for a pigment-containing insulating film which resin composition is excellent in tack property after drying and allows a resultant pigment-containing insulating film to be excellent in flexibility and electrical insulation reliability and to be small in warpage after curing, a resin film for a pigment-containing insulating film, a pigment-containing insulating film, and a printed wiring board provided with a pigment-containing insulating film.
Claims19
A printed wiring board provided with a pigment-containing insulating film comprising a flexible printed wiring board covered with the pigment-containing insulating film obtained from a resin composition, the resin composition comprising at least:
- a binder polymer (A) that
- is soluble in an organic solvent,
- has a urethane bond (a1), and
- has at least a functional group that is a carboxyl group (a2) or an imide group (a3);
- and
- pigment-containing cross-linked polymer particles (B) that are polymer particles having a pigment dispersed therein and whose polymers have a cross-linked structure and a urethane bond;
- wherein the polymer particles (B) are electrically insulating.
A printed wiring board provided with a pigment-containing insulating film comprising a printed wiring board covered with the pigment-containing insulating film obtained from a resin composition, the resin composition comprising at least:
- a binder polymer (A) that
- is soluble in an organic solvent,
- has a urethane bond (a1), and
- has at least a functional group that is a carboxyl group (a2) or an imide group (a3);
- and
- pigment-containing cross-linked polymer particles (B) that are polymer particles having a pigment dispersed therein and whose polymers have a cross-linked structure and a urethane bond;
- wherein the polymer particles (B) are electrically insulating.
Dependencies are inferred from the claim text.