Patent ID: 6534595
Filing Date: 2003-03-18
Classification: B29C,C08L

Abstract:
A coating solution for forming porous organic film comprising the following A) to C), wherein A) and B) have respective heat decomposition initiation temperatures Ta and Tb satisfying a relation: Ta>Tb:A) a thermosetting resin having an aromatic ring in the main chain and a thermosetting reaction initiation temperature Tah that is less than Tb, B) a heat decomposable resin obtained by polymerization of monomers which include at least one compound represented by the following formula (1) or (2), and C) an organic solvent, wherein, X represents an alkenyl group having 2 to 6 carbon atoms, each of R1 to R3 independently represents a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms, and R1, R2 and R3 in the formula (1) may be different from R1, R2 and R3 in the formula (2) respectively;wherein A) is a thermosetting resin having a unit structure represented by the following formula (3): wherein, each of L1 to L8 is independently selected from a hydrogen atom, chlorine atom, bromine atom, iodine atom, alkyl groups having 1 to 10 carbon atoms, alkenyl groups having 2 to 10 carbon atoms, alkynyl groups having 2 to 10 carbon atoms, cycloalkyl groups having 4 to 10 carbon atoms, methoxy group, ethoxy group, phenyl group which may be substituted, and functional groups represented by the following formula (4), A is selected from one or more of the following functional groups, and B is selected from one or more of a direct bond, hydrocarbon groups having 1 to 20 carbon atoms, ether group, ketone group and sulfone group, wherein, each of Q1 to Q12 is independently selected from a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, alkenyl groups having 2 to 10 carbon atoms, alkynyl groups having 2 to 10 carbon atoms, and functional groups represented by the following formula (4), Q13 is selected from alkyl groups having 1 to 10 carbon atoms, alkenyl groups having 2 to 10 carbon atoms, and alkynyl groups having 2 to 10 carbon atoms, Y is selected from a hydrogen atom, fluorine atom, chlorine atom, bromine atom, iodine atom, â€”OZ1 group, and â€”N(Z2) (Z3) group, each of Z1 to Z3 is independently selected from a hydrogen atom, saturated or unsaturated hydrocarbon groups, and groups containing an ether bond,â€”Si(T1)n(T2)3âˆ’nâ€ƒâ€ƒ(4) wherein, T1 is selected from alkenyl groups having 2 to 10 carbon atoms, T2 is selected from alkyl groups having 1 to 10 carbon atom, and arylene groups which may be substituted, n represents an integer of 1 to 3, T1 may be mutually different when n is 2 or 3, and T2 also may be mutually different when n is 1.