Dainippon Ink and Chemicals, Incorporated

Helmut Hartl

Gerwald F Grahe

Rainer Bruno Frings

The invention relates to: 4-methylene-1,3-dioxolanes of the general formula (I)wherein R1 denotes hydrogen, C-C-cycloalkyl or C-C-alkyl; m and n, which may be the same or different, denote 0 or 1, whereby m&#x2266;n, o denotes 2, 3 or 4 depending on the valency of the group X; and X denotes a C&#x2014;C single bond, straight-chain or branched C-C-alkylene, C-C-cycloalkylene, C-C-arylalkylene, &#x2014;CH(OCHCH)OCH&#x2014;, &#x2014;CH(OCH(CH)CH)OCH&#x2014;, wherein p is an integer from 0 to 100; a process for their production; and intermediate products used. Moreover, compositions capable of emission-free, photocationic cross-linking, which comprise 4-methylene-1,3-dioxolanes of the general formula (I) and their use for the production of solvent-resistant and transparent films.

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Berlin, Germany

Helmut Hartl