Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1998-07-30
2000-02-15
Woodward, Ana
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525182, 525189, 525190, 525420, 525421, 525422, 525426, 525434, 525435, 525436, C08L 7904, C08L 7906, C08G 7318, C08G 7532
Patent
active
060254394
ABSTRACT:
Molecular dispersions of rigid-rod polybenzobisazole polymer/copolymer in thermoplastic matrices in a weight ratio of about 1:99 to 50:50 are prepared by dissolving the rigid-rod polymer in an alcoholic or aprotic solvent, dissolving the thermoplastic polymer in an alcoholic or aprotic solvent, combining the two solutions and recovering the resulting molecular composite from the combined solution. These molecular dispersions consist essentially of rigid-rod polybenzobisazole polymer/copolymer having sulfonic acid groups pendant to the polymer/copolymer backbone and thermoplastic polymers selected from the group consisting of polyvinylpyridines, poly(arylene ether ketone)s with a pyridyl functionality, aromatic poly(pyridine ether)s and poly(pyridine ether sulfone) copolymers, and polyimides with a pyridyl functionality.
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Arnold Fred E.
Dang Thuy D.
Dean Derrick R.
Venkatasubramanian Narayanan
Bricker Charles F.
Kundert Thomas L.
The United States of America as represented by the Secretary of
Woodward Ana
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