公开(公告)号：JPH11189664A

公开(公告)日：1999-07-13

申请号：JP27512098

申请日：1998-09-29

Applicant: BASF AG

Inventor： MEYER-ROSCHER BERND DR ,  SCHROF WOLFGANG DR ,  URBAN DIETER DR ,  GEISS PAUL LUDWIG ,  BROCKMANN WALTER

IPC: C08J3/28 ,  B05D3/06 ,  C08F2/46 ,  C08F220/30 ,  C08F220/58 ,  C08J7/00 ,  C09J7/00 ,  C09J133/00 ,  G03F7/20

Abstract: PROBLEM TO BE SOLVED: To adjust crosslinking so that an optimal combination of adhesive properties, peeling strength and shear strength can be obtained by exposing a radiation crosslinkable pressure-sensitive contact film to a radiation pattern formed of regions of different strength. SOLUTION: As a method for crosslinking a radiation crosslinkable pressure- sensitive contact film by exposing the radiation crosslinkable pressure-sensitive contact film to actinic rays of a regulated dose, the film surface is exposed to a regular or irregular radiation pattern formed of regions of different strengths to crosslink the pressure-sensitive contact film. The radiation pattern can be generated by converging radiation by an optical lens or a magnetic lens or by shading using shade regions by a mask or a stencil. As a crosslinkable compound, a copolymer of a benzophenone group-substituted (meth) acrylic acid derivative and an unsubstituted (meth)acrylate is particularly suitable.