Polyester-film backed magnetic recording tape having epoxy subbi

Details Polyester-film backed magnetic recording tape having epoxy subbi Polyester-film backed magnetic recording tape having epoxy subbi

1979-01-11

1980-07-01

McCamish, Marion

Stock material or miscellaneous articles

Composite

Of epoxy ether

427 541, 427130, 427131, 427132, 428480, 428900, B32B 2738

Patent

active

042107032

ABSTRACT:
Cationically polymerized epoxy resin subbing layer for the magnetizable and the backside coating, if any, of polyester-film-backed magnetic recording tape acts as a barrier against extraction and migration of low-molecular-weight components of the polyester film backing which otherwise would tend to crystallize on the surface of the magnetizable coating.

REFERENCES:
patent: 3666874 (1972-05-01), Olson
patent: 4049566 (1977-09-01), Brilovich
patent: 4135036 (1979-01-01), Mukaida

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