C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
154/121, 117/183
C08G 75/02 (2006.01) B32B 27/04 (2006.01) C08G 75/04 (2006.01) C08L 81/02 (2006.01)
Patent
CA 2008830
3266OCA Abstract of the Disclosure An improved composite includes an improved polymer, specifically an improved poly(phenylene sulfide). The improved polymer is produced by an improved method including a polymerization phase, a recovery phase, a washing phase, and an optional air-curing phase. In the polymerization phase a low temperature cycle and a high temperature cycle are used. In a preferred recovery phase, solidified polymer is quenched with N-methyl-2-pyrrolidone. In the washing phase, the recovered solidified polymer is washed with a hot acidic solution and then hot water. In a preferred embodiment, the method produces substantially linear poly(phenylene sulfide) having a melt flow within the range of about 50 to about 200 grams per 10 minutes and an ash content of not greater than about 0.1 weight percent and a melt crystallization temperature of not less than about 347°F (175°C).
Geibel Jon F.
Hagenson Randy L.
Johnson Timothy W.
Register David F.
Scoggins Lacey E.
Osler Hoskin & Harcourt Llp
Phillips Petroleum Company
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