RADIATION CURABLE COMPOSITION, OPTICAL WAVEGUIDE AND METHOD OF FORMING THE OPTICAL WAVEGUIDE

• Main Authors: HUANGFU, JUN, ERIYAMA, YUUICHI, TAKASE, HIDEAKI, UTAKA, TOMOHIRO, TAMAKI, KENTAROU
• Format: Patent
• Language: English; French
• Published: 30.09.2004
• Edition: 7
• Subjects: ADHESIVES; APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; CINEMATOGRAPHY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; ELECTROGRAPHY; FILLING PASTES; HOLOGRAPHY; INKS; MATERIALS THEREFOR; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORIGINALS THEREFOR; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

A radiation curable composition which comprises (A) a hydrolyzate of a hydrolyzable silane compound represented by the general formula (1): (R1~)~p(R2~)~qSi(X)~4-p-q wherein R1 ~is a non-hydrolyzable organic group having 1 to 12 carbon atoms and containing a fluorine atom, R2 ~is a non- hydrolyzable organic group having 1 to 12 carbon atoms (except the one containing a fluorine atom), X is a hydrolyzable group, p is an integer of 1 or 2, and q is an integer of 0 or 1, or a condensate thereof, and (B) an age nt generating an acid by the irradiation with a light, and contains a silanol ( Si- OH) group in an amount of 0.1 to 0.5 relative to the total amount of bonding groups on the Si~s therein. The composition allows the formation of an optic al wave guide which is reduced in a waveguide loss with respect to lights havin g wave lengths of a wide range from a visible region to a near infrared region , and also is excellent in the resistance to cracking, characteristics of patterning by irradiation with a radiation, and the like.