Colored salts of polymeric sulfonate polyanions and dye cations,

Details Colored salts of polymeric sulfonate polyanions and dye cations, Colored salts of polymeric sulfonate polyanions and dye cations,

1991-10-02

1993-08-31

Davis, Jenna L.

Stock material or miscellaneous articles

Composite

Of polyester

8654, 428500, 428343, 428354, B32B 2720

Patent

active

052407802

ABSTRACT:
Light-stable film-forming salts of a sulfonated polymer, especially a sulfonated polyester, and a cationic dye. When these dye-polysalts are coated onto shaped polymeric structures, especially transparent self-supporting films, the resultant products have important optical uses. A polyester film coated with certain red or amber blends of dye-polysalts and provided with a pressure-sensitive adhesive coating is useful as a lithographers' tape.

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