Blends containing photoactive additive

摘要

Polymeric blends having improved flame retardance properties and good ductility at low temperatures are disclosed. The blend is formed from (A) a photoactive additive containing a photoactive group derived from a monofunctional benzophenone; and (B) a polymer resin which is different from the photoactive additive. The additive can be a compound, oligomer, or polymer. When exposed to ultraviolet light, crosslinking will occur between the photoactive additive and the polymer resin, enhancing the chemical resistance and flame retardance while maintaining ductility.

主权项

1. A polymeric blend, comprising:
a photoactive additive containing a photoactive group derived from a monofunctional benzophenone; and a polymer resin which is different from the photoactive additive; wherein the photoactive additive is a cross-linkable polycarbonate resin having the structure of Formula (I):wherein R1 and R2 are independently halogen, C1-6 alkyl, C3-8 cycloalkyl, aryl, or arylalkyl; x is an integer from 0 to 4; y is an integer from 0 to 5; n′ is an integer from 29 to 65; and the repeating unit is derived from:(i) a monomer having the structure:
HO-A1-Y1-A2-OHwherein each of A1 and A2 , comprise a monocyclic divalent arylene group, and Y1 is a bridging group having one or more atoms; or(ii) a monomer having the structure: each Rk is independently halogen, a C1-10 hydrocarbon group, or a halogen substituted C1-10 hydrocarbon group; and n is 0 to 4.