Patent ID: 6068794
Filing Date: 2000-05-30
Classification: G02B,Y10T

Abstract:
A protective film of a polarizing plate, the protective film comprising a support, and provided on one side of the support, an anti-static layer and a hardened layer in that order, the hardened layer being obtained by hardening a layer containing an ultraviolet ray hardenable resin composition with ultraviolet irradiation, wherein the antistatic layer contains a compound having a chemical structure represented by formula (I), (II), (III), (IV), (V), (1), (2), or (3): ##STR16## wherein Z.sup.1 and Z.sup.2 independently represent an alkylene group having 1 to 7 carbon atoms or an alkenylene group; R.sup.1 and R.sup.2 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, provided that R.sup.1 and R.sup.2 may combine with each other to form a ring; W.sup.1 represents a divalent group; X represents an anion; and n.sub.1 represents an integer of 1 to 100, ##STR17## wherein Z.sup.3 and Z.sup.4 independently represent an atomic group necessary to form a heterocyclic ring having 3 to 10 carbon atoms; R.sup.3 and R.sup.4 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; provided that, when Z.sup.3 forms an aromatic ring, R.sup.3 is absent and when Z.sup.4 forms an aromatic ring, R.sup.4 is absent; V.sup.1 represents a single bond or an alkylene, alkenylene or aralkylene group; W.sup.2 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; and n.sub.2 represents an integer of 1 to 100, ##STR18## wherein R.sup.5 and R.sup.6 independently represent an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group, a hydroxyalkyl group, an alkenyl group, an aralkyl group or an aryl group; V.sup.2 represents an alkylene, alkenylene or aralkylene group; W.sup.3 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; and n.sub.3 represents an integer of 1 to 100, ##STR19## wherein R.sup.7 and R.sup.8 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; W.sup.4 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; and n.sub.4 represents an integer of 1 to 100, ##STR20## wherein B represents a copolymer monomer unit; R.sup.9 represents a hydrogen atom or a methyl group; L.sup.1 and L.sup.2 independently represent a divalent linkage group; y represents 0 to 90 mol %; q represents 0 to 99 mol %; s represents 0 to 50 mol %, provided that y+s is not 100 and y+q+s is 100; Q.sup.1 represents a group represented by the following formula (VI), (VII), (VIII) or (IX); ##STR21## wherein T.sup.1 is represented by formula (X) or (X'); ##STR22## in which M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, ##STR23## wherein T.sup.2 is by formula (XI) or (XI'); ##STR24## in which M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, ##STR25## wherein T.sup.3 is represented by formula (XII) or (XII'); ##STR26## in which M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, a benzyl group or an aryl group, ##STR27## wherein R.sup.16 and R.sup.17 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; W.sup.8 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; n.sub.8 represents an integer of 1 to 100; and T.sup.4 is represented by formula (XIII) or (XIII'); ##STR28## in which M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, a benzyl group or an aryl group; and Q.sup.2 represents a group represented by formula (X), (X'), (XI), (XI'), (XII), (XII'), (XIII), (XIII') represented above or by the following formula (XIV); ##STR29## wherein D represents an atomic group necessary to form a 5- or 6-membered saturated or unsaturated heterocyclic ring having 1 to 12 carbon atoms; and M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, ##STR30## wherein A represents a copolymer monomer unit given by copolymerizing a monomer having at least two ethylenically unsaturated bonds; B represents a copolymer monomer unit given by copolymerizing a monomer having an ethylenically unsaturated bond; R.sub.1 represents a hydrogen atom or a methyl group; L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5 and L.sub.6 independently represent a divalent linkage group; x represents 0 to 80 mol %; y represents 0 to 90 mol %; p represents 0 to 100 mol %; q represents 0 to 99 mol %; r represents 0 to 100 mol %; s represents 0 to 50 mol %, provided that x+y is not 100, y+q is not 100, y+s is not 100, q+s is not 100, y+q+s is not 100 and x+y+p+q+r+s is 100; Q.sub.1 and Q.sub.3 represent a divalent linkage group represented by the following formula (4), (5), (6) or (7); and Q.sub.2 and Q.sub.4 represent a group represented by the following formula (4'), (5'), (6') or (7'); ##STR31## wherein Z.sub.1 and Z.sub.2 independently represent an alkylene group having 1 to 7 carbon atoms or an alkenylene group; R.sub.4 and R.sub.5 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, provided that R.sub.4 and R.sub.5 may combine with each other to form a ring; W.sub.1 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; n.sub.9 represents an integer of 1 to 100; T.sub.1 is represented by formula (8) or (8') ##STR32## in which Z.sub.5 and Z.sub.6 independently represent an alkylene group having 1 to 7 carbon atoms; R.sub.12 and R.sub.13 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, a benzyl group or an aryl group, provided that R.sub.12 and R.sub.13 may combine with each other to form a ring; X represents an anion; and M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, ##STR33## wherein Z.sub.3 and Z.sub.4 independently represent an atomic group necessary to form a heterocyclic ring having 3 to 10 carbon atoms; R.sub.6 and R.sub.7 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; V.sub.1 represents a single bond or an alkylene, alkenylene or aralkylene group; W.sub.2 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; n.sub.10 represents an integer of 1 to 100; and T.sub.2 is represented by formula (9) or (9'); ##STR34## in which R.sub.14 and R.sub.15 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; V.sub.3 represents a single bond or an alkylene, alkenylene or aralkylene group; X represents an anion; and M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, ##STR35## wherein R.sub.8 and R.sub.9 independently represent an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group, a hydroxyalkyl group, an alkenyl group, an aralkyl group or an aryl group; W.sub.3 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; V.sub.2 represents an alkylene, alkenylene or aralkylene group; X represents an anion; n.sub.11 represents an integer of 1 to 100; and T.sub.3 is represented by formula (10) or (10') ##STR36## in which R.sub.16 and R.sub.17 independently represent an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group, a hydroxyalkyl group, an alkenyl group, a benzyl group or an aryl group; V.sub.4 represents an alkylene, alkenylene or aralkylene group; X represents an anion; and M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, ##STR37## wherein R.sub.10 and R.sub.11 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; W.sub.4 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; n.sub.12 represents an integer of 1 to 100; and T.sub.4 is represented by formula (11) or (11') ##STR38## in which R.sub.18 and R.sub.19 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; X represents an anion; and M represents an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, ##STR39## wherein Y represents a trivalent group; Q6 represents a trivalent group represented by the following formula: ##STR40## wherein Y' represents a trivalent linkage group, R.sub.28 and R.sub.29 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, and I represents a group represented by the following formula (13), (14), (15) or (16); and Q.sub.5 is represented by the following formula (13), (14), (15) or (16): ##STR41## wherein Z.sub.9 and Z.sub.10 independently represent an alkylene group having 1 to 7 carbon atoms or an alkenylene group; R.sub.20 and R.sub.21 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group, provided that R.sub.20 and R.sub.21 may combine with each other to form a ring; W.sub.5 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; and n.sub.13 represents an integer of 1 to 100, ##STR42## wherein Z.sub.11 and Z independently represent an atomic group necessary to form a heterocyclic ring having 3 to 10 carbon atoms; R.sub.22 and R.sub.23 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; V.sub.5 represents a single bond or an alkylene, alkenylene or aralkylene group; W.sub.6 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; and n.sub.14 represents an integer of 1 to 100, ##STR43## wherein R.sub.24 and R.sub.25 independently represent an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group, a hydroxyalkyl group, an alkenyl group, an aralkyl group or an aryl group; W.sub.7 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group, V.sub.6 represents an alkylene, alkenylene or aralkylene group; X represents an anion; and n.sub.15 represents an integer of 1 to 100, ##STR44## wherein R.sub.26 and R.sub.27 independently represent an alkyl group having 1 to 10 carbon atoms, an alkenyl group, an aralkyl group or an aryl group; W.sub.8 represents an alkylene group having 1 to 10 carbon atoms, an alkenylene group or an aralkylene group; X represents an anion; and n.sub.16 represents an integer of 1 to 100.