Ryton poly

Ryton Poly(phenylene sulfide) Phillips Petroleum... 

Ryton Poly(thio-l,4-phenylene) Phillips Petroleum, u.S. 

Ryton Poly(p-phenylene sulfide) filled or not, PPS Phillips Petrol. Co. 

Figure 11. Synthesis of "Ryton" (poly(phenylene sulfide)).

Poly(phenylene sulfide) (PPS Ryton) is a solvent-resistant plastic that is useful in high-temperature service (structure 4.71). PPS is used for pumps, sleeve bearing, cookware, quartz halogen lamp parts, and electrical appliance housings. 

Over the past 20 years a considerable chemical research effort was devoted to developing new high temperature polymers. It is interesting to note that some of these materials are now finding new applications and solutions to old problems of processing through blending. A commercial series of products trade-named Tribolon XT has been announced which are based on an aromatic polymide (Upjohn s 2080) with Phillips poly(phenylene sulfide), trade-named Ryton. A recent publication (88) describes some of the unique characteristics of this new family of materials. 

Poly(p-phenylene sulfide) was first reported in 1897 by Genvresse [92] who reported an insoluble resin prepared by the reaction of benzene with sulfur in the presence of aluminum ehloride. A variety of other procedures were reported to yield similar resins. Macallum [93] in 1948 reported a novel procedure that yielded an improved resin. Lenz and co-workers [94-96] modified the procedure and Edmonds and Hill [97] of the Phillips Petroleum Co. developed a commercially successful process. The material is now marketed under the trade name Ryton [98]. The crystallinity of the polymer has recently been reported [99-101]. 

Poly(phenylene sulfide) (PPS) is the thio analogue of poly(phenylene oxide) (PPO) [57]. The first commercial grades were introduced by Phillips Petroleum in 1968 under the trade name Ryton. Other manufacturers also have introduced PPS (e.g., Tedur by Bayer). The commercial process involves the reaction of p-dichlorobenzene with sodium sulfide in a polar solvent. 

Ryton (Series) Poly(phenylene sulflde) Philips Petroleum Co. 

Attempts to synthesize aromatic polysulfides by electrophilic substitution methods have failed to produce linear high molecular weight polymers. During the past three decades a systematic approach has been taken for the synthesis of aromatic polysulfides. The nucleophilic reaction of sodium sulfide with p-dichlorobenzene to give poly(phenylene sulfide) has been a successful process. The polymer produced by this method is abbreviated as PPS and has been commercialized by Philips Chemical Company under the trade name Ryton (reaction 24)... 

Commercial production of Ryton , the engineering plastic poly(phenylene... 

Nevertheless, the only commercial poly(monosulfide) is Ryton [Philips Petroleum Co., poly(thio-l,4-phenylene) more frequently referred to as poly(p-phenylene sulfide) or polyCphenylene sulfide) (PPS)]. 

Poly(/ -phenylesulfide), PPS, (white powder, Tg 92 °C, mp 270-290 °C, 65% crystallinity) was the first melt-proccessible polymer to be doped with strong electron acceptors (e.g., ASF5) to yield highly conductive products [90]. The first laboratory synthesis of PPS was reported by Macallum [91] and involved the melt reaction of 1,4-dichlorobenzene, sulfur and sodium carbonate. A commercially product has been available as powder, film or fiber since 1973 from Phillips Petroleum under the trade name Ryton it is produced from 1,4-dichlorobenzene and sodium sulfide (high-pressure process) in a polar solvent (N-methylpyrrolidone) [92]. 

Property Polysul- phone Udel Poly ether sulphone Victrex Poly- phenylene sulphide Ryton Polyether- imide Ultem Ultem +20% glass reinforced... 

MEDIA 200 F RYTON 200" f PENTON 00"F KYNAR 200 F TEFLON 200 F POLY-SULFONE 200 F noryl 200 F NYLON 200 F POLYCAR. 60NATE 316 S.S. CARBON STEEL f LU- MINUM (3003)... 

Poly(phenylene sulfide) has been commercial since 1973 (Ryton Phillips Petroleum Go.) and as a crystalline polymer offers excellent chemical resistance [99]. It also offers good flammability resistance and high temperature resistance and stability. The major deficiency is the poor toughness and commercial products are fiberglass reinforced to counteract this... 

Many CPs were well known in their nonconducting forms much before their conductivity and other features of interest were discovered. Some were also known in their conductive forms, but not well characterized and with not much interest paid to their conductivity. For example, Poly(p-phenylene sulfide), PPS, has been commercially produced for thermoplastics applications under the brand name Ryton by Phillips Chemical Company since the early 1970 s, and well-defined syntheses of Poly(acetylene) have been reported since 1971 [4]. 

Poly(thio-1,4-phenylene) Ryton 330 (2 min) 220 14.5 Hot stage and video micrometer 227... 

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