Polycarbonates
Abstract
Abstract LINEAR POLYCARBONATE RESINS CONTAINING MANY PENDANT ESTER GROUPS AND POSSESSING THE GENERAL STRUCTURAL FORMULA HO-(1,4-PHENYLENE)-C(-A)(-(CH2)N-COO-R)-(1,4-PHENYLENE)- O-CO-O)N-(1,4-PHENYLENE)-C(-A)(-(CH2)N-COO-R)- (1,4-PHENYLENE)-OH WHEREIN: A IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF -H, -CH3, AND -C6H5; R IS AN ALKYL GROUP CONTAINING ONE TO EIGHTEEN CARBON ATOMS AND N IS AN INTEGER IN THE RANGE OF 40 TO 70 INCLUSIVE, ARE CONVERTED TO THE CORRESPONDING LINEAR POLYCARBONATE RESINS CONTAINING A LARGE NUMBER OF PENDANT HYDROXYL GROUPS ONLY BY REDUCTION OF THE ESTER GROUP WITH DIBORANE (B2H4). THE HYDROXYL GROUPS THUS PRODUCED IN THE POLYCARBONATE MOLECULAR CHAIN ARE USEFUL AS GRAFTING AND CROSS-LINKING SITES FOR FURTHER REACTION WITH ORGANIC AND ORGANIC-INORGANIC MOIETIES TO PROVIDE MODIFIED POLYCARBONATES WITH ENHANCED PHYSICAL PROPERTIES.
Inventors
- 👤 Ronald E White
- 👤 Zachariah G Gardlund
Bibliographic Details
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