Reillex

Reillex 425-HCl, dihydropyran, 86°, 1.5 h, 84-98% yield. The Reillex resin is a macroreticular polyvinylpyridine resin and is thus an insoluble form of the PPTS catalyst. 

Me+Rh(CO)2l2 (R425 = Reillex cross-linked poly-4-vinylpyridyne-divinylbenzene [3] R425 Me = methyl... 

Epoxy resin (Tufnol, Bakelite, Epophen) Styrene divinylbenzene ion exchange resins Reillex HPQ anion exchange resin Phenol/formaldehyde cation exchange resin Polyurethane Cellulose (as tissues)... 

A number of efforts have been devoted to the simplified, acid catalyzed reaction between dihydropyran and alcohols to form THP-ethers. Thus, employing the hydrochloride salt of Reillex 425 (34) [a cross-linked macroreticular poly(4-vinylpyri-dine) resin] the tetrahydropyranylation even of hindered alcohols proceeds under mild conditions in high yields without side-reactions (Scheme 4.20) [107]. 

Approximately half of the better resins were then tested for successive loading of succinic acid in simulated medium and regeneration using hot water. The final pH was near pH 5.0 This cycle was repeated for multiple cycles. Some of the hot water regeneration results are excerpted in Table 2. The best resins (Reillex 425, XUS 40285, and XUS 40091) have a stable capacity of about 0.06 g of succinic acid/g of resin. MWA-1 was not included in these tests because of its lower capacity however, it was reexamined in later... 

In a similar manner, the sorbents were tested for their capacity for the substrate of the planned fermentation, glucose. Glucose was found to adsorb with all tested resins (data not shown). Maximum glucose capacities ranged from 0.01 to 0.04 g/g. However, the resinpreferred succinic acid at a ratio near 4 1 for Reillex 425,4 1 for XUS 40091, and 8 1 for XUS 40285. Sorbents that preferentially sorbed glucose over succinic acid were eliminated from further testing. 

The solid supports used in this study were macroporous co-polymers of vinylpyridine and styrene crosslinked with divinylbenzene. Polymers of this type in the form of beads are available commercially (e.g. Reillex 425) and were also prepared for this study by Purolite. For spectroscopic studies, a more convenient sample morphology was required and thin-film polymers of similar stoichiometry were synthesised by the group of Sherrington at the University of Strathclyde. Full details of the methods used to prepare thin film polymers are reported elsewhere.11 To generate the ion exchange resin, the pyridyl functionalities of the polymer were quatemised with methyl iodide (Eq 1). 

Poly(4-vinylpyridine-co-styrene-co- divinylbenzene) were supplied in the form of beads (Reillex 425 and Purolite ) or prepared as thin films (dimensions ca. 76 x 14 mm x 40-120 pm) at the University of Strathclyde.11 Quatemisation of the pyridine groups was carried out by slow addition of the polymer (typically 1 g) to ethanol (40 cm3) To this was added methyl iodide (2 cm3) and the mixture was heated to 50 °C for 2 hours and then cooled. The quatemised polymer was washed with ethanol followed by acetone and then vacuum dried. 

N. Schroeder, S. Radinski, J. Ball, K. Ashley, S. Cobb, B. Cutrell, J. Adams, C. Johnson, and G. Whitner, Technetium partitioning for the Hanford tank waste remediation system anion exchange studies for partitioning technetium from synthetic DSSF and DSS simulants and actual Hanford wastes (101-SY and 103-SY) using Reillex -HPQ resin. Annual Report, LA-UR-95-4440 (Los Alamos National Laboratory, 1995). 

The criteria for selecting the proper adsorbent are capacity, specificity, ease of regeneration, and the ability to withstand repetitive regeneration. Although a resin exhibiting all of the desired properties has yet to be found, one specific resin, polyvinylpyridine (PVP) Reillex 425, appears satisfactory and has been tested for the recovery of lactic acid [13]. 

Polymeric counterparts of 4-dimethylaminopyridine have been prepared by several groups. Reilly Industries sells one as Reillex PolyDMAP (5.32a).141 When used in esterifications, the polymeric catalyst offers easy separation, reduced toxicity and the ability to use it in excess. It can be reused. The monomeric reagent is highly toxic. The two other polymeric analogues of 4-dimethylaminopyridine (5.33) are based on other chemistry.142 The first is a polyamide, the second, a polyurethane. In the second case, glycerol was also sometimes added to produce an insoluble product. 

This adsorption technology uses polymer resins as sorbents (Amberlite, Am-bersorb, XUS, Reillex). The polymers consist of polystyrene, polyvinylepyri-dine and polymethylacrylats. In addition, carbonate resins and zeolithes (sili-... 

There have been many approaches published to "immobilize" a homogeneous catalyst. These heterogeneous catalysts must have better activity, selectivity, lifetime or some other property to warrant their use in an industrial chemical process. This talk will draw upon the author s experiences at DuPont and Air Products with Nation , Nafion on carbon, anionic attached [Rh(CO)2l2] to Reillex-425, carbons as catalysts for the hydrolysis of esters, heterogeneous catalyst to activate dimethyl ether as a methyl transfer reagent, and monoliths as hydrogenation catalysts. These individual experiences will show the complexities of a simple problem - "immobilization". 

The same homogenous anionic rhodium catalyst is also active for the carbonylation of methyl acetate to acetic anhydride. The "immobilized" form on Reillex , a polyvinyl pyridine resin, has been reported for the carbonylation of methyl acetate to acetic anhydride. Literature procedures readily allow for the preparation of 2 to 5% by weight of rhodium on Reillex " (7). These catalysts... 

Figure 1 Hydrogenation of acetic anhydride using Reillex with 1.1 wt% Rh as tRh(CO)2l2]-.

Aldrich Chemical Co., 1001 West St. Paul Avenue, Milwaukee, WI53233, USA Poly(4-vinylpyridine), 2% or 25% cross-linked Reilly Chemicals, SA, Rue Defacqz 115, Boite 19, B-1050 Brussels, Belgium Reillex cross-linked poly(4-vinylpyridine) polymers... 

Trade Name Synonyms Reillex 402 Polymer [Reilly Ind. http //www.reillyind.com], Reillex 402-1 Polymer t[Reilly Ind. http //www.reillyind.com], Reillex 425 Polymer [Reilly Ind. http //www.reillyind.com], Reillex HP Polymer [Reilly Ind. http //www. reillyind. com]... 

Poly-4-vinylpyridine crosslinked Reillex 402 Polymer Reillex 402-1 Polymer Reillex 425 Polymer Reillex HP Polymer 9022-17-7 Polyquaternium-7 9022-75-7... 

The examined polymer-supported catalyst having two different granulations (bead size) A and B was the macroporous cross-linked copolymer of 4-vinylpyridine and 25% (4/1) divinylbenzene-styrene copolymer (commercial product named Reillex 425) [103]. Their average bead diameter (J), skeletal density (p), surface area ( Sbet). porc volume (Vp), and relative swelling ratio (SR) are given in Table 8.2. 

REILLEX Report 3, Catalysts, Reilly Tar and Chemical Corporation, Indianapolis, 1985. 

ACRONYMS, TRADE NAME PVP, P4VP, Reillex CLASS Vinyl polymers homopolymers... 

The chemisorption bond between the ligand and support is rather strong and cannot be easily broken by a simple solvent extraction. ISEC-determined swollen-state morphologies of the Reillex HP in THF resin without and with the ligand are shown in Figure 9.5. It is evident that the chemisorption of the ligand on the polyvi-nylpyridine chains induces substantial expansion of the polymer network. 

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