METHOD OF PRODUCING SCRATCH-RESISTANT COATING FOR OPTICAL INFORMATION CARRIERS Russian patent published in 2008 - IPC C09D4/00 C08F220/20 C08F222/10 G11B7/24 C08F2/50 

FIELD: chemistry.

SUBSTANCE: composition for coating of optical transparent information carriers is described, the composition being curable by UV radiation and including (A) from 1 to 60% by mass of at least one colloid oxide of metal, (B) from 0.1 to 50% by mass of at least one silyl acrylate hydrolysis product having a general formula (I): , (I) where a means an integer from 0 to 2, b means an integer from 1 to 3, and the sum a+b is from 1 to 3, R independently means non-branched or branched alkyl residue with 1 to 8 carbon atoms, cycloalkyl residue with 3 to 8 carbon atoms, unsubstituted or substituted aryl residue with 6 to 10 carbon atoms in the aryl portion, R¹ independently means hydrogen, non-branched or branched alkyl residue with 1 to 8 carbon atoms, cycloalkyl residue with 3 to 8 carbon atoms, unsubstituted or substituted aryl residue with 6 to 10 carbon atoms in the aryl portion, R² independently means hydrogen, non-branched or branched alkyl residue with 1 to 8 carbon atoms, unsubstituted or substituted aryl residue with 6 to 10 carbon atoms, R³ means single bond, or non-branched or branched, if necessary, substituted alkylene residue (alkane dienyl residue) with 1 to 8 carbon atoms in alkylene residue, or, if necessary, substituted arylene residue (aryl dienyl residue) with 6 to 10 carbon atoms in arylene residue, (C) from 25 to 90% by mass of at least one acrylate monomer of general formula (II) where n means a number from 1 to 6, R⁴ means hydrogen, non-branched or branched alkyl residue with 1 to 8 carbon atoms, unsubstituted or substituted aryl residue with 6 to 10 carbon atoms in the aryl portion and where substituents R⁴ may be the same or different; R⁵ means unsubstituted or substituted organic residue having a valency from 1 to 6 such as, if necessary, substituted, non-branched or branched aliphatic or aromatic hydrocarbon residue with 1 to 20 carbon atoms, and (D) from 0.01 to 15% by mass of at least one UV photoinitiator, respectively, with respect to the total mass of the composition, the composition being intended for coating transparent, polycarbonate-based, optical information carriers.

EFFECT: proposed composition is scratch-resistant and highly adhesive to the substrate surface.

3 cl, 2 tbl, 4 ex