The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 1978
Filed:
Jun. 14, 1976
Niklaus Baumann, Marly, CH;
Hans Zweifel, Muttenz, CH;
Marcus Baumann, Basel, CH;
John Sidney Waterhouse, Cherry Hinton, EN;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
The invention relates to organic polymers which can be crosslinked under the action of light and which are suitable for carrying out photomechanical processes. These polymers are photochemically considerably more sensitive than known comparable polymers and their sensitivity can additionally also be further increased by means of a combination with sensitizers. The molecular weight is at least 1,000. The polymers contain, as light-sensitive groups, groups of the formula I ##STR1## wherein R and R.sub.1 independently of one another denote alkyl groups with at most 4 C atoms, or R and R.sub.1 conjointly denote the remaining part of a 5-membered to 6-membered carbocyclic ring.