Patent ID: 6468639
Filing Date: 2002-10-22
Classification: C09D,H01L,Y10T

Abstract:
A single application polyimidosiloxane-based coating material which comprises:(a) 100 parts by weight of an organic solvent-soluble polyimidosiloxane represented by general formulae (1) to (3) â€ƒwherein R1 is a tetravalent residue resulting from removal of the 4 carboxyl groups from an aromatic tetracarboxylic acid, R2 is a divalent residue resulting from removal of the amino groups from a diaminopolysiloxane represented by general formula (4) below, R3 is a divalent residue resulting from removal of the amino groups from an aromatic diamine compound represented by general formula (5) below, R4 is a divalent residue resulting from removal of the amino groups from a diamine compound selected from the group consisting of 1,4-diaminobenzene, 1,3-diaminobenzene, 2,4-diaminotoluene, 1,4-diamino-2,5-dihalogenobenzene, bis(4-aminophenyl)ether, bis(3-aminophenyl)ether, bis(4-aminophenyl)sulfone, bis(3-aminophenyl)sulfone, bis(4-aminophenyl)methane, bis(3-aminophenyl)methane, bis(4-aminophenyl sulfide, bis(3-aminophenyl)sulfide, 2,2-bis(4-aminophenyl)propane, 2,2-bis(3-aminophenyl)propane, 2,2-bis(4-aminophenyl)hexafluoropropane, o-dianisidine, o-tolidine, tolidinesulfonic acids, 1,4-bis(4-aminohenoxy)benzene, 1,4-bis(3-amninophenoxy)benzene, 1,4-bis(4-aminophenyl)benzene, 1,4-bis(3-aminohenyl)benzene, &agr;&agr;â€²-bis(4-aminophenyl)-1,4-diisopropylbenzene, &agr;,&agr;â€²-bis(4-aminophenyl)-1,3-diisopropylbenzene, 2,2-bis[4-(4-aminophenoxy)phenyl]propane, 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane, 2,2-bis[4(4-aminophenoxy)phenyl]sulfone, 4, 4â€²-(4-aminophenoxy)biphenyl, 9,9-bis) (4-aminophenyl)fluorene and 5,10-bis(4-aminophenyl)anthracene, and the combinations thereof with hexamethylenediamine and diaminododecane, wherein n1 is 3-50, each R5 is a divalent hydrocarbon group or phenyl group, each R6 is independently an alkyl group of 1-3 carbon atoms or a phenyl group, X is a direct bond or a member selected from the groups represented by general formulae (6)below, r1 is a carboxyl group, n2 is an integer of 1 or 2, n3 is an integer of 0-3, R7 and R8 are hydrogemethyl groups or trifluoromethyl groups, and m1, m2 and m3 are in a proportion such that of the total 100 mole percent of the components, m1 constitutes 60-92.5 mole percent, m2 constitutes 7.5-40 mole percent and m3 constitutes the remainder; (b) 2-30 parts by weight of an epoxy resin; (c) 40-125 parts by weight of a fine inorganic filler having a mean particle size of 0.001 to 15 &mgr;m; and (d) 60-140 parts by weight of a high-boiling-point solvent, having a boiling point of 140 to 210Â° C., which has a viscosity of 400-1000 poise and which gives a cured film with tin burrowing of 100 &mgr;m or less upon heating and drying.