Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2007-11-13
2007-11-13
Mulcahy, Peter D. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S423000, C524S425000, C524S427000, C524S430000, C524S437000, C524S442000, C524S447000, C524S492000, C524S493000, C524S497000
Reexamination Certificate
active
10659888
ABSTRACT:
Liquid crystalline polymers (LCP) with relatively high melting points are prepared by a process which includes solid state polymerization of a (pre)polymer, which contains alkali metal cations, to raise the LCP molecular weight. The presence of the alkali metal cations in the (pre)polymer usually results in a final polymer with less color and/or a higher melting point. The LCPs are useful as molding resins and for films.
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U.S. Appl. No. 10/660,435, Inventor(s): Edmund A. Flexman and Mark G. Weinberg, Title: Compatibility Improvement in Crystalline Thermoplastics With Mineral Fillers.
U.S. Appl. No. 09/641,149, Inventor(s): Edmund A. Flexman and Mark G. Weinberg, Title: Toughened, High-Modulus Polyamides.
Derwent Publications Ltd., XP002276832, JP 05 140428, Tonen Sekiyu Kagaku KK Jun. 1993.
Flexman Edmund A.
Weinberg Mark
Dobson Kevin S.
E. I. du Pont de Nemours and Company
Mulcahy Peter D.
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