Optical disc and method of manufacturing the same

Details Optical disc and method of manufacturing the same Optical disc and method of manufacturing the same

1988-09-30

1990-05-08

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 75, 526281, 346137, C08F 3208

Patent

active

049239422

ABSTRACT:
An optical resin consisting essentially of a radical polymerization polymer of an ethylenically unsaturated monomer, characterized in that at least a major part of the ethlenically unsaturated monomer is an ester of 1 mole of tricyclo[5,2,1,0.sup.2,6 ]decanedimethanol with 2 moles of a mixture of acrylic acid and metharcylic acid. Because the resin is a polymer obtained from the restricted monomer as specified above, the resin possesses high thermal resistance and high heat stability as well as low hygroscopic property. Dimethanol compounds from higher Diels-Alder adducts of cyclopentadine are also used in place of the tricyclo [5,2,1,0.sup.2,6 ]decanedimthanol which is a Diels-Alder adduct of two moles of cyclopentadiene.

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English Translation of Japanese Kokai Pub'n No.: 61-287913 to Aritomi et al., published. 12-18-86.
Hackh's Chem. Dict., J. Grant (ed.) McGraw-Hill, Inc., p. 27 (1969).

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