Photopolymerizable polymers having anhydride-containing groups

Claim 2

A polymer comprising as a recurring unit an anhydride-containing group represented by the structure: ##EQU5## wherein --CO--R--CO-- is a residue of a dibasic acid selected from the group consisting of aliphatic dicarboxylic acids and aromatic dicarboxylic acids, and X is selected from the group consisting of hydrogen, halogen, lower alkoxy, lower alkyl and nitro, the remaining recurring unit being non-anhydride unit selected from the group consisting of: ##EQU6## wherein --CO--R 1 -- COOH is the residue of a dibasic acid selected from the group consisting of aliphatic dicarboxylic acids and aromatic dicarboxylic acids, Y is a member selected from the group consisting of hydrogen, lower acyl, lower alkyl and lower hydroxalkyl, and Z is a member selected from the group consisting of cinnamoyl, halocinnamoyl, lower alkoxy cinnamoyl, lower acyl cinnamoyl, lower hydroxalkyl cinnamoyl, and nitro cinnamoyl.

Claim 3

A polymer as recited in accordance with claim 1 wherein the anhydride-containing group comprises at least about 10 mole percent of the recurring units of the polymer.

Claim 4

A polymer as recited in accordance with claim 1 wherein the --CO--R--CO-- is a residue selected from the group consisting of tetrahydrophthalic, succinic, maleic, phthalic, glutaric, malonic, 1,2-dimethylsuccinic, citraconic, naphthalic, pyrotartaric, camphoric, trimellitic, pyromellitic and hexahydrophthalic acids.

Claim 5

A polymer containing as a major recurring unit an anhydride-containing unit represented by the general structure: ##EQU7## wherein --CO--R--CO-- is a residue of a dibasic acid selected from the group consisting of succinic, glutaric, phthalic, citraconic, camphoric, pyrotataric, napthalic, pyromellitic, trimellitic, malonic, 1,2-dimethylsuccinic, hexahydrophthalic, maleic, pyrotartaric and Δ 4-tetrahydrophthalic, and X is selected from the group consisting of hydrogen, halogen, lower alkoxy, lower alkyl and nitro and as a minor recurring unit a non-anhydride unit derived from vinyl polymerization, said minor recurring unit being a member selected from the group consisting of: ##EQU8## wherein --CO--R 1 --COOH is the residue of a dibasic acid selected from the group consisting of aliphatic dicarboxylic acids and aromatic dicarboxylic acids, Y is a member selected from the group consisting of hydrogen, lower acyl, lower alkyl and lower hydroxalkyl, and Z is a member selected from the group consisting of cinnamoyl, halocinnamoyl, lower alkoxy cinnamoyl, lower acyl cinnamoyl, lower hydroxalkyl cinnamoyl, and nitro cinnamoyl.

Claim 6

A polymer containing as a major recurring unit an anhydride-containing unit represented by the general structure: ##EQU7## wherein --CO--R--CO-- is a residue of a dibasic acid selected from the group consisting of succinic, glutaric, phthalic, citraconic, camphoric, pyrotataric, napthalic, pyromellitic, trimellitic, malonic, 1,2-dimethylsuccinic, hexahydrophthalic, maleic, pyrotartaric and Δ 4-tetrahydrophthalic, and X is selected from the group consisting of hydrogen, halogen, lower alkoxy, lower alkyl and nitro and as a minor recurring unit a non-anhydride unit derived from vinyl polymerization, said minor recurring unit being a member selected from the group consisting of: ##EQU8## wherein --CO--R 1 --COOH is the residue of a dibasic acid selected from the group consisting of aliphatic dicarboxylic acids and aromatic dicarboxylic acids, Y is a member selected from the group consisting of hydrogen, lower acyl, lower alkyl and lower hydroxalkyl, and Z is a member selected from the group consisting of cinnamoyl, halocinnamoyl, lower alkoxy cinnamoyl, lower acyl cinnamoyl, lower hydroxalkyl cinnamoyl, and nitro cinnamoyl.