Weatherable multilayer resinous articles and method for their preparation
View Patent ↗Substantially solvent-free multilayer articles characterized by excellent color retention and gloss retention, solvent resistance and recyclability comprise a substrate layer which may be at least one of polycarbonates, polyesters and ABS and ASA copolymers, and a resinous coating layer which contains resorcinol or alkylresorcinol isophthalate/terephthalate ester units. An intermediate layer may also be present.
1. An article comprising;
(A) a fluorescent polymeric layer comprising a fluorescent dye; and
(B) an ultraviolet light screening layer comprising a polymeric resin, said polymeric resin comprising at least one polymer, or a mixture thereof, selected from the group consisting of:
(i) polymers having a polymeric backbone comprising the following repeating moiety A;
wherein R is a non-interfering substitutent and P is the remainder of the polymer; and
whereby the polymers are able to absorb ultraviolet light; and
(ii) polymers having a polymeric backbone comprising the following repeating moiety B:
wherein R is a non-interfering substituent and P is the remainder of the polymer; said moiety B being transformable to said moiety A by photo-Fries rearrangement, whereby said polymer comprising moiety B can be transformed to an ultraviolet light absorbing polymer comprising moiety A.
2. An article comprising:
(A) a fluorescent polymeric layer comprising a fluorescent dye; and
(B) an ultraviolet light screening layer comprising a polymeric resin, said polymeric resin comprising at least one polymer, or a mixture thereof, which either is, or is capable of undergoing rearrangement into a U.V. light absorbing polymer material.
3. A multilayer resinous article comprising:
a fluorescent substrate layer comprising a first material and
a coating layer thereon, said coating layer comprising a thermoplastic polyester different from said first material and comprising structural units derived from a 1,3-dihydroxybeuzene organodicarboxylate capable of undergoing rearrangement into an ultraviolet light absorbing polymer material.