A temporary wafer bonding method comprising: - Applying a bonding composition comprising a cycloolefin copolymer dissolved or dispersed in a solvent system to either a first substrate or a second substrate by spin-coating to form a bonding layer, said layer being a uniform material formed of the same composition across its thickness, wherein the cycloolefin copolymer has a weight average molecular weight (Mw) of from 2,000 Daltons to 200,000 Daltons and is comprised of recurring monomers of cyclic olefins and acyclic olefins, said cyclic olefins being selected from the group consisting of norbornene-based olefins, tetracyclododecene-based olefins, and dicyclopentadiene-based olefins, said acyclic olefins being selected from the group consisting of branched and unbranched C 2 -C 20 alkenes, and wherein the cyclic olefins are selected from the group consisting of and combinations of the foregoing, where each R 1 and R 2 is individually selected from the group consisting of-H, and alkyl groups, and each R 3 is individually selected from the group consisting of-H, substituted and unsubstituted aryl groups, alkyl groups, cycloalkyl groups, aralkyl groups, ester groups, ether groups, acetyl groups, alcohols, aldehyde groups, ketones, nitriles, and combinations thereof, and wherein spin-coating is applied at spin speeds of from 500-5000 rpm, at accelerations of from 3000-10,000 rpm/second, and for spin times of from 30-180 seconds, - Temporarily bonding the first and second substrates together via the bonding layer, and - Separating the first and second substrates after temporarily bonding. - Applying a bonding composition comprising a cycloolefin copolymer dissolved or dispersed in a solvent system to either a first substrate or a second substrate by spin-coating to form a bonding layer, said layer being a uniform material formed of the same composition across its thickness, wherein the cycloolefin copolymer has a weight average molecular weight (Mw) of from 2,000 Daltons to 200,000 Daltons and is comprised of recurring monomers of cyclic olefins and acyclic olefins, said cyclic olefins being selected from the group consisting of norbornene-based olefins, tetracyclododecene-based olefins, and dicyclopentadiene-based olefins, said acyclic olefins being selected from the group consisting of branched and unbranched C 2 -C 20 alkenes, and wherein the cyclic olefins are selected from the group consisting of and combinations of the foregoing, where each R 1 and R 2 is individually selected from the group consisting of-H, and alkyl groups, and each R 3 is individually selected from the group consisting of-H, substituted and unsubstituted aryl groups, alkyl groups, cycloalkyl groups, aralkyl groups, ester groups, ether groups, acetyl groups, alcohols, aldehyde groups, ketones, nitriles, and combinations thereof, and wherein spin-coating is applied at spin speeds of from 500-5000 rpm, at accelerations of from 3000-10,000 rpm/second, and for spin times of from 30-180 seconds, and combinations of the foregoing, where each R 1 and R 2 is individually selected from the group consisting of-H, and alkyl groups, and each R 3 is individually selected from the group consisting of-H, substituted and unsubstituted aryl groups, alkyl groups, cycloalkyl groups, aralkyl groups, ester groups, ether groups, acetyl groups, alcohols, aldehyde groups, ketones, nitriles, and combinations thereof, and wherein spin-coating is applied at spin speeds of from 500-5000 rpm, at accelerations of from 3000-10,000 rpm/second, and for spin times of from 30-180 seconds, - Temporarily bonding the first and second substrates together via the bonding layer, and - Separating the first and second substrates after temporarily bonding. <EOS>