Abstract
2,4-Polybenzoxazoles are synthesized from a biosynthetically prepared AB monomer. The biosynthetically produced precursor, 2,3-dihydro-3-hydroxyanthranilic acid (DHAA), is chemically transformed to the AB monomer, 3-hydroxyanthranilic acid (HAA). This AB monomer is used to prepare said polybenzoxazoles.
Original language | English (US) |
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Patent number | 5340913 |
Filing date | 3/19/93 |
State | Published - Aug 23 1994 |