Perfluorinated stripping agents for diffusion transfer assemblages

摘要

Photographic assemblages and processes are described wherein a certain stripping agent is employed to enable an image-receiving layer to be separated from the rest of the assemblage after processing. The stripping agent comprises a straight chain alkyl or polyethylene oxide perfluoroalkylated ester or perfluoroalkylated ether, and preferably has the following formula: <IMAGE> wherein R1 is an alkyl or substituted alkyl group having from 1 to about 6 carbon atoms or an aryl or substituted aryl group having from about 6 to about 10 carbon atoms; <IMAGE> CH2O(CH2CH2O)zR3; R3 is H or R1; n is an integer of from about 4 to about 20; and x and y each independently represents an integer of from about 2 to about 50, and z represents an integer of from 1 to about 50. Less bulky black-and-white or color prints or transparencies can thereby be obtained from integral assemblages. Materials from the discarded layers may also be recycled.