Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant
Reexamination Certificate
2009-12-16
2011-12-13
Truong, Duc (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From sulfur-containing reactant
C528S373000, C528S489000, C528S492000, C528S493000, C528S503000
Reexamination Certificate
active
08076447
ABSTRACT:
A poly(arylene sulfide) having properties that a melt viscosity is 1 to 3,000 Pa·s as measured under conditions of a temperature of 310° C. and a shear rate of 1,216 sec−1, a pH is 7.0 to 12.0 as measured in a mixed solvent of water/acetone (volume ratio=2/1), a crystallization temperature is at most 220° C. as measured in the course of lowing the temperature of the polymer at a rate of 10° C./min from a molten state, and a whiteness degree is at least 70 as measured in the form of a melt molded or formed product, and a production process thereof.
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Kawama Hirohito
Sato Hiroyuki
Suzuki Koichi
Kureha Corporation
Porter Wright Morris & Arthur LLP
Truong Duc
LandOfFree
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