Homopolymers which exhibit a high level of photo-inducable...

Details Homopolymers which exhibit a high level of photo-inducable... Homopolymers which exhibit a high level of photo-inducable...

2007-05-08

2007-05-08

Lipman, Bernard (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S257000, C526S261000, C526S286000, C526S288000, C526S298000, C526S304000, C526S307000, C526S311000, C526S312000

Reexamination Certificate

active

10998381

ABSTRACT:
Homopolymers suitable for storage of information provided optically are disclosed. The are formed from monomers whichcontain groupings which are at least trinuclear, which are capable of absorbing the electromagnetic radiation of visible light, and which are structured so that in their thermodynamically stable state they are distended and strongly anisometric,wherein the at least trinuclear groupings comprise at least one electron-attracting substituent which gives rise to a dipole moment which forms an angle of at least 20° with the longitudinal axis of the at least trinuclear groupings,wherein the at least trinuclear groupings contain at least one nucleus-linking group which is suitable for a photo-induced change in configuration, wherein said group is selected from the set consisting of

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patent: 5023859 (1991-06-01), Eich et al.
patent: 5173381 (1992-12-01), Natansohn et al.
patent: 5412079 (1995-05-01), Furukawa et al.

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