Information carrying discs

An information-carrying element comprising a substrate having adhered to at least one surface thereof a separate layer having a maximum thickness of from 1.0 to 100 .mu.m and a circular or spiral pattern of grooves with or without modulations, depressions, protuberances, said separate layer comprising a polymer layer derived from 15 to 100% by weight of at least one polyacryloyl-containing heterocyclic wherein said heterocyclic is selected from the formulae:

• A.sup.1 --Z--A.sup.2 ( 1)
• wherein A.sup.1 and A.sup.2 independently are alkoxyalkyl groups having terminal ethylenic unsaturation and having the formula ##STR12## wherein R--O-- is a monovalent residue of an aliphatic terminally unsaturated primary alcohol, ROH, formed by the removal of the active hydrogen from the primary --OH group, R having the formula:
• ##STR13## wherein E is ##STR14## c is an integer of from 1 to 6, R.sup.1 and R.sup.4 are independently selected from hydrogen and methyl,
• R.sup.5 is an aliphatic group having from 1 to 15 carbon atoms, and no more than two catenary oxygen or carboxy groups, a valence of m+1.
• m is an integer of from 1 to 5,
• R.sup.2 is selected from hydrogen and groups of the formula ##STR15## wherein R.sup.6 is selected from alkyl and alkenyl groups
• R.sup.7 is an aliphatic or aromatic group of up to eight carbon atoms,
• R.sup.3 is an alkylene group of from 1 to 6 carbon atoms with up to one catenary oxygen atom, and
• Z is a heterocyclic group of the formula ##STR16## wherein X is a divalent group which is required to complete a 5- or 6-membered heterocyclic ring, or ##STR17## wherein R.sup.12 and R.sup.13 independently represent hydrogen or methyl,
• R.sup.14 represents hydrogen, an alkyl group, or a phenyl group,
• R.sup.13 and R.sup.14 together may represent trimethylene or tetramethylene group,
• m represents a number of from 1 to 30,
• n is 2 or 3, and
• A represents a group of the formula ##STR18## wherein X.sup.1 represents the divalent radical necessary to complete a 5- or 6-membered heterocyclic ring group, said process comprising exposing said composition to radiation while the composition is in the presence of an atomosphere of at least 2% by volume of oxygen to polymerize said components having formula (1) or (2).