content_image/927173.jpg content_image/927172.jpg
mercially or made by a variety of methods known in the art, such as is disclosed in U.S. Pat. Nos. 6,136,501; 6,379,861; and 6,855,475. 

[ 0025] Other preferred monomers of formula ( 5) are those of formula (7) 

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wherein R 21 is independently chosen from H, C$_{1}$ _ $_{4}$-alkyl, C$_{1}$ _ $_{4}$-haloalkyl, halogen, and CN; and R$^{30 }$is a monovalent organic residue having a lactone moiety. In formula (7), R 30 is a C$_{4}$ _ $_{20}$-monovalent organic residue comprising a lactone moiety. R$^{30 }$may comprise any suitable lactone moiety, and preferably comprises a 5 to 7-membered lactone, which may be optionally substituted. Suitable substituents on the lac› tone ring are C$_{1}$_$_{10}$-alkyl moieties. Suitable lactone moieties for R$^{30 }$are those having formula (8) 

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wherein E is a 5 to 7-membered ring lactone; each R 31 is independently chosen from C$_{1}$ _ $_{10}$-alkyl; p is an integer from 0 to 3; Y is a chemical bond or a divalent linking residue having from 1 to 10 carbon atoms; and * indicates the point of attachment to the oxygen atom of the ester. It is preferred that each R$^{31 }$is independently chosen from C$_{1}$_calkyl, and more preferably C$_{1}$_$_{4}$-alkyl. Examples of R 31 are methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, and iso-butyl. Preferably, p=0 or 1. Suitable divalent linking residues for Y include, but are not limited to, divalent organic residues having from 1 to 20 carbon atoms. Suitable divalent organic residues for Y include, without limitation, C$_{1}$ _ $_{20}$-hydrocarbyl moieties, C$_{1}$ _ $_{20}$-heteroatom-containing hydrocarbyl moi› eties, and substituted C$_{1}$_$_{20}$-hydrocarbyl moieties. The term "C$_{1}$ _ $_{20}$-heteroatom-containing hydrocarbyl moieties" refers to hydrocarbyl moieties having one or more heteroatoms, such as nitrogen, oxygen, sulfur, phosphorus, within the hydrocarbyl chain. Exemplary heteroatoms include, but are not limited to, ---0-, -S-, -N(H)-, -N(C$_{1}$ _ $_{20}$-hydro› carbyl)-, ----C(=O)-O-, -S(=O)-, -S(=O)$_{2}$ -, -C(=O)-NH-, and the like. "Substituted C$_{1}$ _ $_{20}$-hydro› carbyl moieties" refers to any hydrocarbyl moiety having one or more hydrogens replaced with one or more substitu› ents such as halogen, cyano, hydroxy, amino, mercapto, and the like. It is preferred that R 30 is chosen from gamma› butyrolactone (GBLO), beta-butyrolactone, gamma-valero› lactone, delta-valerolactone, and caprolactone, and more preferably, R 30 is GBLO. Monomers of formula (7) are generally commercially available or may be prepared by methods known in the art. 

[0026] In one preferred embodiment, the organic polymer comprises as polymerized units, one or more unsaturated monomers comprising a chromophore. Suitable chro› mophores are any aromatic (or aryl) moiety that absorbs radiation at the wavelength of interest. Such chromophores are unsubstituted aromatic moieties, such as phenyl, benzyl, naphthyl, anthracenyl, and the like, or may be substituted with one or more of hydroxyl, C$_{1}$ _ $_{10}$-alkyl, C$_{2}$ _ $_{10}$-alkenyl, C$_{2}$_$_{10}$-alkynyl, and C$_{5}$_$_{30}$-aryl, and preferably is unsubsti› tuted or hydroxyl-substituted. When an unsaturated chro› mophore-containing monomer having a hydroxy-substituted aryl moiety is used, it will be appreciated by those skilled in the art that such monomer is a first unsaturated monomer as described above. Preferably, the organic polymer comprises as polymerized units, one or more unsaturated monomers of formula (4) having a chromophore moiety, where such chromophore moiety is not a hydroxyaryl moiety. Preferred chromophore moieties are chosen from fury!, pyryl, thio› phenyl, pyridyl, phenyl, naphthyl, acenaphthyl, fluorenyl, carbazolyl, anthracenyl, phenanthryl, pyrenyl, coronenyl, tetracenyl, pentacenyl, tetraphenyl, benzotetracenyl, triph› enylenyl, perylenyl, benzyl, phenethyl, tolyl, xylyl, styrenyl, vinylnaphthyl, vinylanthracenyl, dibenzothiophenyl, thiox› anthonyl, indolyl, acridinyl, and the like, and more prefer› ably phenyl, naphthyl, anthracenyl, phenanthryl, benzyl, and the like. Chromophores used in the present invention are free of aromatic rings having a substituent of the structure *----C(Rx)$_{2}$-O-Lg, each Rx is independently H or a alkyl group of 1 to 15 carbons, where each Rx may be taken together form an aliphatic ring; Lg is H, an aliphatic monovalent hydrocarbon having 1 to 10 carbons, or a monovalent aromatic group, and * indicates the point of attachment to the aromatic ring. That is, the chromophores do not have an aromatic ring having a substituent where an sp3 hybridized carbon is bonded directly to the aromatic ring and to an oxy group. 

(7) 

(8) 

[0027] The present condensed polymers preferably com› prise an organic polymer chain comprising as polymerized units one or more monomers of formula (1) and one or more monomers of formula (3). The mole ratio of the total monomers of formula (1) to the total monomers of formula (3) is from 99:1 to 1:99, preferably from 95:5 to 5:95, more preferably from 95:5 to 55:45, and yet more preferably from 90: 10 to 60:40. It is preferred that the total moles of the monomers of formula (1) is greater than the total moles of the monomers of formula (3). It is preferred that the present condensed polymers comprise an organic polymer chain comprising as polymerized units one or more monomers of formula (1), one or more monomers of formula (3), and one or more monomers of formula (4), more preferably one or more monomers of formula (1 ), one or more monomers of formula (3) and one or more monomers of formula (5), and even more preferably one or more monomers of formula (1 ), one or more monomers of formula (3), and one or more monomers of formula (5a). When the present condensed polymer comprises an organic polymer chain comprising as polymerized units one or more monomers of formula (1), one or more monomers of formula (3), and one or more monomers of formula ( 4 ), the mole ratio of the total mono› mers of formulae (1) and (3) to the total monomers of formula (4) is from 99:1 to 1:99, preferably from 90:10 to 10:90, and more preferably from 75:25 to 25:75. It is preferred that the total moles of the monomers of formula ( 4) is greater than either of the total moles of the monomers of 

