Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1991-04-17
1993-07-06
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
526242, 526243, 526245, 526247, 526248, 526250, 526251, 526252, 526253, 526255, 528126, 528128, 528171, 528174, 528220, 528226, 568669, C08G 802, C08F 1418
Patent
active
052255158
ABSTRACT:
Polybenzazole polymers may contain perfluorocyclobutane rings to provide a flexible moiety which is stable at high temperatures.
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Ueda, "Synthesis of Poly(Phenylene Ether Sulfone) by Direct Self-Polycondensation of Sodium 4-Phenoxy Benzene Sulfonate Using Phosphorous Pentoxide/Methane Sulfonic Acid as Condensing Agent and Solvent," 6 Makromol. Chem., Rapid. Comm. 271 (1985).
Colquhoun, "Synthesis of Polyether Ketones in Trifluoromethane Sulfonic Acid," 25 (2) Polymer Preprints 17-18 & Table II (1984).
Colquhoun et al., "Synthesis of Aromatic Polyether Ketones in Trifluoromethane Sulfonic Acid," 29 Polymer 1902 (1988).
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Harris et al., U.S. Ser. No. 407,973 (filed Sep. 15, 1989).
Harris William J.
Lysenko Zenon
Dodson Shelley A.
Kight III John
The Dow Chemical Company
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