Macro-photoinitiator via enzymatic polymerization
AssigneeXerox Corporation
InventorSantiago Faucher
Life of this patent
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Abstract
Disclosed herein is a macro-photoinitiator comprising a photoinitiator covalently bound to a polymer. Also disclosed herein is a process for the enzymatic polymerization of monomers and photoinitiators performed at atmospheric pressure and relatively low temperatures to form the macro-photoinitiator.
Claims17
A process for producing a macro-photoinitiator via enzymatic polymerization, the process comprising:
- providing a reaction solution comprised of at least one monomer and at least one reactive photoinitiator having at least one reactive moiety reactive with the at least one monomer,
- contacting the reaction solution with at least one enzymatic catalyst, and
- heating to enzymatically polymerize the at least one monomer and form a polymeric product solution comprised of a macro-photoinitiator, wherein the macro-photoinitiator has the at least one reactive moiety of the at least one photoinitiator covalently bound to a polymer moiety formed from the at least one monomer, wherein the photoinitiator of the macro-photoinitiator includes an OH group, and wherein
- the at least one monomer is selected from the group consisting of oxacycloheptadec-10-en-2-one, pentadecalactone, pentadecenlactone, hexadecenlactone and caprolactone, cyclic diester lactide, butyrolactone, propyl malolactone, propiolactone, 1,4-dioxan-2-one, valerolactone, and mixtures thereof.
A macro-photoinitiator having a formula photoinitiator-R—O-polymer, wherein
- R is a straight or branched carbon atom chain, saturated or unsaturated, having from 1 to 30 carbon atoms and optionally with one or more carbon atoms substituted with a heteroatom;
- the photoinitiator of the macro-photoinitiator includes an OH group;
- and
- the polymer is comprised of n linked monomer units, n being an integer of from 3 to 200, wherein
- the monomer units are derived from one or more of oxacycloheptadec-10-en-2-one, pentadecalactone, pentadecenlactone, hexadecenlactone and caprolactone, cyclic diester lactide, butyrolactone, propyl malolactone, propiolactone, 1,4-dioxan-2-one, and valerolactone.
A curable composition comprising at least one UV curable matrix material and at least one macro-photoinitiator, wherein the at least one macro-photoinitiator contains a polymer comprised of n linked monomer units, n being an integer of from 3 to 200, wherein the monomer units are derived from one or more of oxacycloheptadec-10-en-2-one, pentadecalactone, pentadecenlactone, hexadecenlactone and caprolactone, cyclic diester lactide, butyrolactone, propyl malolactone, propiolactone, 1,4-dioxan-2-one, and valerolactone.
Dependencies are inferred from the claim text.