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US 2016/0237185 A1Published application
Synthesis of acetal compounds
AssigneeAgfa Graphics NV
InventorJohan LOCCUFIER
Life of this patent
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Abstract
A process for the preparation of optionally asymmetric acetal compounds includes reacting a compound containing a hydroxyl group with a vinylether compound in the presence of a zwitterionic catalyst including at least one basic nitrogen containing structural fragment and at least one sulfonic acid group in its structure, with the proviso that a molar ratio of the basic nitrogen to sulfonic acid is 1:1
Claims16
1-15. (canceled)
A process for preparation of optionally asymmetric acetal compounds, the process comprising the steps of:
- reacting a compound including a hydroxyl group with a vinylether compound in the presence of a zwitterionic catalyst that includes at least one basic nitrogen containing structural fragment and at least one sulfonic acid group;
- wherein
- a molar ratio of the basic nitrogen to sulfonic acid is 1:1.
A polymerizable composition comprising:
- a polymerizable photoreactive compound including at least one acetal;
- a vinylether compound including at least one other polymerizable group;
- a zwitterionic catalyst in a concentration of no more than 0.1 wt %, the zwitterionic catalyst including at least one basic nitrogen containing structural fragment and at least one sulfonic acid group in its structure, and a molar ratio of the basic nitrogen to sulfonic acid is 1:1;
- optionally one or more polymerization inhibitors;
- and
- optionally one or more free radical polymerizable compounds differing from the vinylether compound including the at least one other polymerizable group;
- wherein
- the wt % is based on a total weight of the polymerizable composition.
5 more elements
Dependencies are inferred from the claim text.