Receptive media for permanent imaging and methods of preparing a

Details Receptive media for permanent imaging and methods of preparing a Receptive media for permanent imaging and methods of preparing a

1995-06-01

2000-10-17

Krynski, William

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

4283044, 4284111, B32B 300

Patent

active

061328499

ABSTRACT:
Articles having a complex geometric configuration have hydrophilicity imparted to at least a portion of surfaces of the articles while substantially retaining the complex geometric configuration. The hydrophilicity is imparted by an extremely thin, self-interlocking shell of tactic, hydrophilic poly(vinyl alcohol) enveloping the surfaces. A tactic poly(vinyl alcohol) precursor applied to surfaces of the supporting structure is reacted in situ on the surfaces with a hydrolysis reagent to prepare the tactic, hydrophilic poly(vinyl alcohol) shell. The article having the hydrophilic shell is highly resistant to solvent washout. Hydrophilicity and hydrophobicity can be reversibly provided on regio-specific surfaces of the article. Membranes to form permanent and undistorted images, and methods of preparing such images from image-forming substances in receptive media are also provided.

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