Substrate for information-recording media

Details Substrate for information-recording media Substrate for information-recording media

1990-04-16

1992-06-02

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428913, 430945, 346 76L, 3461351, 369288, B32B 300

Patent

active

051185482

ABSTRACT:
The present invention relates to a substrate for information-recording media, which is formed of a polymer containing a specific acrylate-based monomer as an essential component. Since the acrylate-based monomer has a rigid skeleton similar to that of bisphenol A, the substrate for recording media, formed of the polymer of such a monomer, has high hardness and excellent heat resistance. Further, due to six fluorine atoms that the acrylate-based monomer contains, the substrate has advantages of low water absorptivity and easy die removability.

REFERENCES:
patent: 4944980 (1990-07-01), Akutsu et al.
patent: 5063096 (1991-11-01), Kohara et al.

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