Photoactive additive with functionalized benzophenone
AssigneeSabic Innovative Plastics IP B.V.
InventorsJordi Calveras, Jean-Francois Morizur, Paul Dean Sybert
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Abstract
Photoactive additives are disclosed. The additive includes a benzophenone having at least one substituent that comprises a divalent linker and a linking group, wherein the linking group is a carboxyl group, ester group, or acid halide group. The additive can be a polymer, an oligomer, or a compound. When added to a base polymeric resin, the photoactive additive permits crosslinking upon exposure to ultraviolet light.
Claims31
A photoactive additive formed from the reaction of:
- a benzophenone having one or two substituents that comprise a divalent linker and a linking group, wherein the linking group is a carboxyl group, ester group, or acid halide group;
- and
- a first linker moiety comprising a plurality of functional groups that can react with the linking group of the first photoactive moiety.
A crosslinked layer formed from a polymeric blend that has been exposed to UV radiation, the blend comprising:
- a photoactive additive that is a cross-linkable polycarbonate resin formed from the reaction of (a) a benzophenone having one or two substituents that comprise a divalent linker and a linking group, wherein the linking group is a carboxyl group, ester group, or acid halide group, and (b) a first linker moiety comprising a plurality of functional groups that can react with the linking group of the first photoactive moiety;
- and
- a polymer resin which is not the photoactive additive.
The layer of claim 33, wherein the crosslinked layer is formed by exposure to 36.0 J/cm2 of UVA radiation and no detectable UVC radiation.
A composition comprising a cross-linked polycarbonate, the cross-linked polycarbonate derived from a cross-linkable polycarbonate resin formed from the reaction of (a) a benzophenone having one or two substituents that comprise a divalent linker and a linking group, wherein the linking group is a carboxyl group, ester group, or acid halide group, and (b) a first linker moiety comprising a plurality of functional groups that can react with the linking group of the first photoactive moiety.
Dependencies are inferred from the claim text.