Phenol-novolacs with improved optical properties

Details Phenol-novolacs with improved optical properties Phenol-novolacs with improved optical properties

C - Chemistry, Metallurgy

08

G

C08G 8/04 (2006.01) C08F 8/08 (2006.01) C08G 14/04 (2006.01) C08L 61/06 (2006.01) H05K 1/02 (2006.01) H05K 1/03 (2006.01)

Patent

CA 2346238

The specification discloses epoxidized products and compositions of a polyphenol of a phenol and glyoxal wherein the polyphenol prior to epoxidation has an ultraviolet (UV) absorbance of at least 0.260 at 365 nanometers (nm) and/or at least 0.400 at 350 nm. The specification also discloses the manufacture and use of such epoxidized products.

La présente invention concerne des produits époxydés et des compositions d'un polyphénol de phénol et de glyoxal. Ce polyphénol avant d'être époxydé possède une absorbance des ultraviolets d'au moins 0,260 à 365 nanomètres (nm) et/ou d'au moins 0,400 à 350 nm. Cette invention concerne aussi la fabrication et l'utilisation de ces produits époxydés.

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