Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
Inventor
active
Low-color ultraviolet absorber compounds and compositions...
Low-color ultraviolet absorber compounds and compositions...
Low-color ultraviolet absorbers for high UV wavelength...
Low-color vanillin-based ultraviolet absorbers and methods...
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