Photosensitive composition

G - Physics – 03 – F

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G03F 7/039 (2006.01) C08K 5/42 (2006.01) G03F 7/004 (2006.01) H05K 3/00 (2006.01) H05K 3/06 (2006.01)

Patent

CA 2238833

The invention relates to photosensitive compositions capable of being developed as positives. Conventional compositions are either insufficiently photosensitive or unsuitable for use on copper surfaces such as those in printed circuit boards, since the exposed regions of the composition layer cannot be completely removed during development and create problems in the subsequent metal-coating or etching operations. These drawbacks are not found with the claimed photosensitive compositions. Various compositions are described containing photo-acid generators and a polymer resin containing acid- cleavable side groups and formed by polymerisation of at least three different acrylate or methacrylate monomers.

L'invention concerne des compositions photosensibles pouvant être développées pour donner des positifs. Les compositions traditionnelles présentent une photosensibilité insuffisante ou bien sont inadaptées à l'utilisation sur des surfaces de cuivre, par exemple de cartes imprimées, étant donné que les parties de la couche de composition exposées ne peuvent pas être complètement éliminées lors du développement, ce qui pose des problèmes lors des opérations de métallisation ou d'attaque suivantes. Avec les compositions photosensibles de l'invention on ne rencontre pas ces inconvénients. L'invention concerne différentes compositions contenant des générateurs de photoacide et une résine polymère qui renferme des groupes latéraux aptes à une coupure acide et qui est formée par polymérisation d'au moins trois monomères acryliques ou méthacryliques différents.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Photosensitive composition does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photosensitive composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photosensitive composition will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1414324

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.