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The adhesive of claim 1 comprising a copolymer having a) 5 to 95 parts by weight of said monomer units having pendent carbazole groups b) 95 to 55 parts by weight of said alkyl (meth)acrylate monomer units c) 0 to 15 parts by weight of acid functional monomer units d) 0 to 15 parts by weight of polar monomers and e) 0 to 5 parts by weight of other monomers, wherein the sum of the monomers is 100 parts by weight and optionally a plasticizer.Ģ0. The adhesive of claim 17, wherein said plasticizer has a refractive index of at least 1.5.ġ9.
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The adhesive according to claim 1, further comprising a plasticizer.ġ8. The adhesive according to claim 1, further comprising a crosslinker.ġ7. The adhesive according to claim 2 wherein said ethylenically unsaturated carboxylic acids are selected from acrylic acid, methacrylic acid, and itaconic acid.ġ6. The adhesive according to claim 2 wherein said acid functional monomer is selected from ethylenically unsaturated carboxylic acids, ethylenically unsaturated sulfonic acids, and ethylenically unsaturated phosphoric acids.ġ5. The adhesive according to claim 11, wherein the polar monomer(s) are selected from the group consisting of, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, and mixtures thereof.ġ4. The adhesive according to claim 11, wherein the polar monomer(s) are selected from the group consisting of, acrylamides, N,N-dialkyl substituted acrylamides, N-vinyl lactams, and N,N-dialkylaminoalkyl (meth)acrylates, ethylenically unsaturated nitriles, hydroxyalkyl (meth)acrylates and mixtures thereof.ġ3. The adhesive according to claim 1, further comprising at least one non acid containing polar monomer copolymerizable with the aromatic monomer(s).ġ2. The adhesive according to claim 9, wherein the alcohol is selected from the group consisting of 1-butanol, 1-pentanol, 2-pentanol, 3-pentanol, 2-methyl-1-butanol, 1-methyl-1-butanol, 1-methyl-1-pentanol, 2-methyl-1-pentanol, 3-methyl-1-pentanol, 2-ethyl-1-butanol, 2-ethyl-1-hexanol, 3,5,5-trimethyl-1-hexanol, 3-heptanol, 2-octanol, 1-decanol, 1-dodecanol, and mixtures thereof.ġ1. The adhesive according to claim 1, wherein said alkyl (meth)acrylate monomer are selected from (meth)acrylic acid ester of a non-tertiary alkyl alcohol of about 1 to about 12 carbons.ġ0. The adhesive according to claim 1, wherein the refractive index is at least 1.50.ĩ. The adhesive according to claim 3, wherein n is 1.Ĩ. The adhesive according to claim 3, wherein R 1 is an alkylene of 6 to 8 carbons.ħ. The adhesive according to claim 3, wherein X 2 is oxygen.Ħ. The adhesive of claim 1, comprising carbazole monomer units in an amount of at 5 to 95 parts by weight, per 100 parts of total monomer.ĥ. The adhesive of claim 1, wherein the polymerized monomer units having pendent carbazole groups is of the formula: wherein X 1 and X 2 are each independently -O-, -S-, or -NR 3-, where R 3 is H or C 1-C 4 alkyl R 1 is an alkylene of 1 to 8 carbons optionally containing one of more catenary ether oxygen atoms or pendent hydroxy groups n is 1 to 3 and R 2 is either H or CH 3.Ĥ. The adhesive of claim 1, wherein said copolymer further comprises c) acid functional monomer units.ģ. An adhesive comprising a copolymer of a) monomer units having pendent carbazole groups and b) alkyl (meth)acrylate monomer units, said adhesive having an optical transmission value of at least 85%.Ģ.