TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: (II) is substituted 2,2-diphenylpropane compounds of formula (a1), substituted 1,1,1,3,3,3-hexafluoro-2,2-diphenylpropane compounds of formula (a2), substituted 1-phenoxybenzene compounds of formula (a3), substituted diphenyl-methanone compounds of formula (a4), substituted 1-(phenylsulfonyl)benzene compounds of formula (a5), substituted biphenyl compounds of formula (a6) or substituted 9-benzhydryl-9H-fluorene compounds of formula (a7). (III) is substituted 1-phenoxybenzene compounds of formula (b1), substituted biphenylene compounds of formula (b2) or substituted phenylene compounds of formula (b3). (I) is substituted pyrrolidine-2,5-dione compounds of formula (Ia) or (Ib).R30, R31 = 1-15C alkyl, 1-15C alkoxy, 1-15C fluoroalkyl, 3-15C cycloalkyl, 3-15C heterocycloalkyl, 3-15C cycloalkyloxy, 6-15C aryl, 6-15C aryloxy or 2-15C heteroaryl (all optionally substituted), H, OH or halo; eithera, b = 0-4; ora+b = greater than or equal to 2;R40, R41 = 1-15C alkyl, 1-15C alkoxy, 1-15C fluoroalkyl, 3-15C cycloalkyl, 3-15C heterocycloalkyl, 3-15C cycloalkyloxy, 6-15C aryl, 6-15C aryloxy or 2-15C heteroaryl (all optionally substituted), H or halo; eitherc, d = 0-4; orc+d = greater than or equal to 2;Cy4 = one of 4-20C carbocyclic, 6-20C monocyclic aromatic or 2-20C condensed polycyclic aromatic (all optionally substituted), 2-20C non-condensed polycyclic aromatic or cyclic group (unsubstituted with at least one F or at least one of 1-15C fluoroalkyl);Cy5 = one of 4-20C carbocyclic, 6-20C monocyclic aromatic or 2-20C condensed polycyclic aromatic (all optionally substituted) or 2-20C non-condensed polycyclic aromatic;X = F or 1-15C fluoroalkyl; andy = valence of Cy5 or 1-4.Provided that: at least two of R30 and R31 are OH; and R40 and R41 do not include OH.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The composition further comprises a photoacid generator. Preferred Components: The oligomer or polymer further includes a structural unit which is substituted hydrocarbon compounds of formula (-Cy2-) (III). The crosslinking agent includes at least two of vinyl ether groups, and/or 2,2'-bis(4-(2-(vinyloxy)ethoxy)phenyl) propane, (1,1,1-tris(4-2-(vinyloxy)ethoxy)phenyl)ethane, 1,3,5-tris(2-(vinyloxy)ethoxy)benzene, poly(ethylene glycol)divinyl ether, 4,4'-bis-but-3-enyloxy-biphenyl and 1,5-bis-but-3-enyloxy-naphthalene. Preferred Definitions:    Cy1 = substituted phenylene moiety of formula (4a) or substituted diphenylene moiety of formula (4b);    R1-R3 = 1-15C alkyl, 1-15C alkoxy, 1-15C fluoroalkyl, 3-15C cycloalkyl, 3-15C heterocycloalkyl, 3-15C cycloalkyloxy, 6-15C aryl, 6-15C aryloxy or 2-15C heteroaryl (all optionally substituted), H, OH or halo;    L1 = one of a single bond, (CR1aR1b)p, (SiR1cR1d)q, S(=O)2, O and/or C(=O);    R1a-R1d = H, halo, OH, 1-10C alkyl, 1-10C fluoroalkyl or 6-20C aryl;    p, q = 1-5; and    n, m, l = 0-2.    EXAMPLE - 4,4'-Oxydiphthalic anhydride (10 g) and 2,2'-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (11.8 g) were polymerized to give polyhydroxyimide comprised of 5-(1,3-dioxo-2,3-dihydro-1H-isoindol-5-yloxy)-2-(2-hydroxy-5-(2,2,2-trifluoro-1-(4-hydroxy-phenyl)-1-trifluoromethyl-ethyl)-phenyl)-isoindole-1,3-dione (Z-1). (Z-1) (1 g) was dissolved in a propylene glycol methyl ether acetate solvent to give a polyhydroxyimide solution having solid content of 15 wt.%. Then, crosslinking agent of 2,2'-bis(4-(2-(vinyloxy)ethoxy)phenyl)propane was (0.547 g) added to the above reaction mixture, and mixed and filtered using a filter to give organic passivation layer composition.