Image-receiving element
AssigneePolaroid Corporation
InventorsGerard Gomes, Gary S. LaPointe, James J. Manning
Life of this patent
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Abstract
An image-receiving element for use in photographic and photothermographic diffusion transfer film units of the type where the image-receiving element is designed to be removed, or “peeled-apart” from a photosensitive element following exposure and photographic processing. The present image-receiving element comprises, in sequence, a support, an image-receiving layer and a strip-coat layer which serves to facilitate separation of the image-receiving element from the photosensitive element after photographic processing. The strip-coat layer comprises an anion of poly(acrylic acid), or a salt thereof, complexed with a cationic quaternary salt. In a preferred embodiment, the strip coat layer may include an ethoxylated alcohol.
Claims14
An image-receiving element for use in a photographic or photothermographic diffusion transfer process comprising in sequence:
- a support;
- an image-receiving layer;
- and
- a strip-coat layer overlying said image-receiving layer, said strip-coat layer comprising an anion of a poly(acrylic acid) represented by the formula
- where n is an integer of from about 65 to about 3500 complexed with a cationic quaternary salt represented by the formula
- wherein
- R1-R4 are each independently selected from the group consisting of hydrogen, C1-C6 alkyl and CH2m R5, wherein m is 1 or 2 and R5 is phenyl;
- and
- an ethoxylated polymer represented by the formula
- C30H62—OCH2—CH2—Op OH
- where p is an integer of about 40.
Dependencies are inferred from the claim text.