18-04-2013 дата публикации
Номер: US20130096256A1
Disclosed are novel cross-linkable end-cappers for oligo-and polyimides. End-capped oligo-and polyimides comprising such an end-capper may be cured at a lower temperature compared to oligo-and polyimides end-capped with PEPA. 2. The compound according to claim 1 , wherein “Ar” is phenyl claim 1 , naphtyl claim 1 , thiophenyl or furanyl.3. The compound according to claim 1 , wherein “Ar” is phenyl.4. The compound according to claim 1 , wherein the integer “n” is 0; or wherein “n” is 1 or more claim 1 , and R3 is claim 1 , independently if “n” is 2 or more claim 1 , selected from the group consisting of methyl claim 1 , methoxy claim 1 , nitro claim 1 , and trifluoromethyl.5. (canceled)6. The compound according to claim 1 , wherein said compound is a compound according to formula (II) and “X” is O (oxygen); or wherein said compound is a compound according to formula (I) and R1 and R2 are selected from OH claim 1 , chloro claim 1 , and OC1-C8 alkyl.8. (canceled)10. (canceled)11. The oligo- or polyimide according to claim 9 , wherein said oligo- or polyimide comprisesat least one residue of an aromatic dianhydride selected from the group consisting of pyromellitic dianhydride, 4,4′-oxydiphthalic anhydride, 2,2-bis-[4-(3,4-dicarboxyphenoxy)phenyl]-propane dianhydride, 3,3′,4,4′-benzophenonetetracarboxylic acid dianhydride, 3,3′,4,4′-tetracarboxybiphenyl dianhydride, 4,4′,5,5′-sulfonyldiphthalic anhydride, and 5,5′-(perfluoropropane-2,2-diyl)bis(isobenzofuran-1,3-dione); andat least one residue of an aromatic diamineselected from the group consisting of 4,4′-oxydianiline, 1,4-diaminobenzene, 1,3-diaminobenzene, 1,3-bis-(4-aminophenoxy)benzene, 1,3-bis-(3-aminophenoxy)benzene, methylenedianiline, and 3,4′-oxydianiline.12. The oligo- or polyimide according to claim 9 , having a number average molecular weight of about 1 claim 9 ,000 to 20 claim 9 ,000; or having a weight average molecular weight of about 1 claim 9 ,000 to 200 claim 9 ,000.1316-. (canceled)17. A composition ...
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