Environmentally protected optical recording media

Details Environmentally protected optical recording media Environmentally protected optical recording media

1985-10-22

1987-03-24

Thomas, Alexander S.

Stock material or miscellaneous articles

Composite

Of metal

428 65, 430271, 3461351, 369284, 369286, 369288, G11B 370

Patent

active

046524983

ABSTRACT:
An optical recording medium comprising a transparent substrate having an information-bearing surface, a specularly reflective layer on the information-bearing surface, and a protective layer covering the other side of the reflective layer has been improved by using a new type of protective layer which comprises a polymeric network containing phosphoric acid moieties. Examples of the compounds which are cured into the protective layer in order to obtain better adhesion to aluminum protective layers are: 2-methacryloyloxyethyl phosphate, and the phosphonate ester triacrylate having the formula ##STR1## wherein m may be 1-5. These phosphorous-containing organic compounds are radiation curable, and they are mixed with other radiation curable polymers to form the protective layer which is preferably radiation cured. Phosphorous atoms account for between about 0.05 and 0.5 weight-percent of the polymeric network within the protective layer. The improved protective layer has been found to avoid corrosion and provide better adhesion than previously known protective layers for optical recording disks such as compact audio disks and video disks.

REFERENCES:
patent: 3843399 (1974-10-01), Kaplan et al.
patent: 3984500 (1976-10-01), Dickie et al.
patent: 3992477 (1976-11-01), Dickie et al.
patent: 4020278 (1977-04-01), Carre et al.
patent: 4037251 (1977-07-01), Bricot et al.
patent: 4124672 (1978-11-01), Jarsen
patent: 4126726 (1978-11-01), Soeding
patent: 4296158 (1981-10-01), Lewis
patent: 4368043 (1983-01-01), Yamauchi et al.
patent: 4374077 (1983-02-01), Kerfeld
patent: 4420537 (1983-10-01), Hayama et al.
patent: 4430363 (1984-02-01), Daniels et al.
patent: 4526837 (1985-07-01), Ohtsuki et al.
patent: 4537940 (1985-08-01), Omura et al.
patent: 4539382 (1985-09-01), Omura et al.
patent: 4540722 (1985-09-01), Bunker

Affiliated with

Also associated with

Rating

Environmentally protected optical recording media does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Environmentally protected optical recording media, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Environmentally protected optical recording media will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1353697