Patent ID: 8765867
Filing Date: 2014-07-01
Classification: C08J,C08L,H01L

Abstract:
1. A heat-resistant resin paste, comprising: a first organic solvent (A1), wherein the first organic solvent is 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone, a second organic solvent (A2) that comprises a lactone, wherein the lactone is selected from the group consisting of γ-butyrolactone and γ-valerolactone, a heat-resistant resin (B) that is soluble in a mixed organic solvent of (A1) and (A2), and a heat-resistant resin filler (C) that is soluble in (A1) but insoluble in (A2), wherein (C) is dispersed within a solution comprising (A1), (A2) and (B), a quantity of the lactone, relative to a total weight of the second organic solvent (A2), is at least 5% by weight, a quantity of the heat-resistant resin (B) and the heat-resistant resin filler (C), relative to a total weight of the heat-resistant resin paste, is within a range from 5 to 90% by weight, the heat-resistant resin (B) comprises a polyimide resin, a polyamideimide resin, a polyamide resin, or a precursor thereto, and the heat-resistant resin filler (C) comprises a polyimide resin, a polyamideimide resin, a polyamide resin, or a precursor thereto.