OXIRANE POLYMER

Bisphenol A, (chloromethyl) oxirane polymer. See Epoxy, bisphenol A/ epichlorohydrin... 

Synonyms Bisphenol A, (chloromethyl) oxirane polymer Bisphenol A, epichlorohydrin polymer (Chloromethyl) oxirane, 4,4 -(1-methylethyl-idene) bisphenol copolymer Epoxy resin Epoxy resin ERL-2795 4,4-Isopropylidenediphenol-epichlorohydrin epoxy resin 4,4 -lsopropyli-denediphenol, polymer with 1-chloro-2,3-epo) propane Phenol, 4,4 -isopropylidenedi-, dimer with 1 -chloro-2,3-epo) propane Phenol, 4,4 -isopropylidenedi-, polymer with 1-chloro-2,3-epoxypropane Phenol, 4,4 -(1-methylethylidene) bis-, polymer with (chloromethyl) oxirane CiassiTicatbn Polymer... 

Methyloxirane S(-)-Methyloxirane. See Propylene oxide Methyl oxirane polymers. See Poloxamer 101 4-Methyl-y-oxo-benzenebutanoic acid compounded with 4-ethylmorpho-line (2 1). See4-Oxo-4-p-tolylbutyric acid adduct with 4-ethylmorpholine N-Methyl-N-(1-oxo-9-octadecenyl) glycine (Z)-N-Methyl-N-(1-oxo-9-octadecenyl) glycine. See Oleoyl sarcosine 4-Methyl-2-oxopentane. See Methyl isobutyl ketone... 

Synonyms Methyl oxirane polymers Polyethylenepolypropylene glycols,... 

Aluminum dichlorohydrate complex with oxirane polymer. See Aluminum dichlorohydrex PEG... 

Methyl oxirane polymers. See Poloxamer 101 4-Methyl-y-oxo-benzenebutanoic acid compounded with 4-ethylmorpholine (2 1). 

Synonyms Methyl oxirane polymers Polyethylenepolypropylene glycols, polymers Ciassification Polyoxyethylene, polyoxypropylene block polymer Formuia ... 

From the results stated above, the distributions of the three rotational Isomers were estimated to be almost the same for poly( i -oxypropylene) In the three solvents, the conformational differences being not so large as to explain the sign difference in the [a] of the oxirane polymer. 

Synonyms Methyl oxirane polymers Polyethylenepolypropyiene glycols, polymers Classification Polyoxyethylene, polyoxypropylene block polymer Ionic Nature Nonlonic... 

Poly(ethylene glycol) Carbowax oxirane polymer, PEG, poly(ethyIene oxide), poly(oxyethylene) poly(vinyl oxide) 25322-68-3 Poly(oxy- 1,2-ethanediyl), co-hydro- U w-hydro - (C2H40) H20... 

Poly(styrene-ft/oc -poly- Ethylene oxide-styrene polymer 25267-79-2 Oxirane, polymer with (C HgC2H40)4... 

With appropriately substituted oxetanes, aluminum-based initiators (321) impose a degree of microstmctural control on the substituted polyoxetane stmcture that is not obtainable with a pure cationic system. A polymer having largely the stmcture of poly(3-hydroxyoxetane) has been obtained from an anionic rearrangement polymerisation of glycidol or its trimethylsilyl ether, both oxirane monomers (322). Polymerisation-induced epitaxy can produce ultrathin films of highly oriented POX molecules on, for instance, graphite (323). Theoretical studies on the cationic polymerisation mechanism of oxetanes have been made (324—326). 

Oxirane Process. In Arco s Oxirane process, tert-huty alcohol is a by-product in the production of propylene oxide from a propjiene—isobutane mixture. Polymer-grade isobutylene can be obtained by dehydration of the alcohol. / fZ-Butyl alcohol [75-65-0] competes directly with methyl-/ fZ-butyl ether as a gasoline additive, but its potential is limited by its partial miscibility with gasoline. Current surplus dehydration capacity can be utilized to produce isobutylene as more methyl-/ fZ-butyl ether is diverted as high octane blending component. 

Chemical Name N-(2-aminoethyl)-1,2-ethanediamine polymer with (chloromethyl)oxirane Common Name —... 

The use of an unsaturated anionic initiator—such as potassium p-vinyl benzoxide—is possible for the ring opening polymerization of oxirane [43]. Although initiation is generally heterogenous, the polymers exhibit the molecular weight expected and a low polydispersity. In this case, the styrene type unsaturation at chain end cannot get involved in the process, as the propagating sites are oxanions. 

The living nature of ethylene oxide polymerization was anticipated by Flory 3) who conceived its potential for preparation of polymers of uniform size. Unfortunately, this reaction was performed in those days in the presence of alcohols needed for solubilization of the initiators, and their presence led to proton-transfer that deprives this process of its living character. These shortcomings of oxirane polymerization were eliminated later when new soluble initiating systems were discovered. For example, a catalytic system developed by Inoue 4), allowed him to produce truly living poly-oxiranes of narrow molecular weight distribution and to prepare di- and tri-block polymers composed of uniform polyoxirane blocks (e.g. of polyethylene oxide and polypropylene oxide). 

Initiation resulting from insertion of the monomer into the Al—Cl bond is followed by propagation involving insertion between the porphinato-aluminum and the alkoxide group of the growing polymer, coupled with P-scission of the C—O bond of the oxirane monomer (demonstrated by nmr results) it yields a polyether terminated by a CH2C1 end-group. 

Some of these bi-metallic oxyalkoxides are able to polymerize oxiranes to high-molecular weight poly-ethers8 b) (M.W. of the order of 106 ). The resulting polymers reveal a quasi-living character, their DPn increases with conversion and is further... 

Oxirane57). If the conditions are chosen such as to avoid propagation (low temperature, Li+ or Na+ are better counterions than K+ in this respect) one single oxirane unit is added, yielding after protonation a polymer fitted at chain end with an alcohol function. 

These polymers are based on the three-membered heterocyclic system either as the epoxy or oxirane ring (1.3). 

Many other reagents for converting alkenes to epoxides,including H2O2 and Oxone , VO(0-isopropyl)3 in liquid C02, ° polymer-supported cobalt (II) acetate and 02, ° and dimethyl dioxirane.This reagent is rather versatile, and converts methylene oxiranes to spiro-epoxides. ° ° One problem with dimethyloxirane is C—H insertion reactions rather than epoxidation. Magnesium monoperoxyphthalate is commercially available, and has been shown to be a good substitute for m-chloroperoxybenzoic acid in a number of reactions. 

RN 99732-49-7 MF C4oHsoNO,P C,6Hj40 [C,4H220 C2H4O CHzOlx MW unspecified CN (/ )-A(,A/,Al-trimethyl-10-oxo-7-[( 1 -oxohexadecyl)oxy]-3,5,9-trioxa-4-phosphapentacosan-1 -aminium-4-oxide inner salt, mixt. with formaldehyde polymer with oxirane and 4-(l, 1,3,3-tetramethylbutyl)phenol and 1-hexadecanol... 

RN 25301-02-4 MF [C,4H220 C2H4O CH20]x MW unspecified CN formaldehyde polymer with oxirane and 4-(l, l,3,3-tetrameihylbutyl)phenol... 

Foreman, E.A., Puskas, J.E., and Kaszas, G., Synthesis and characterization of Arborescent (hyper-branched) polyisobutylenes from the 4-(l,2-oxirane-isopropyl) styrene inimer. J. Polym. Set Polym. Chem., 45, 5847, 2007. 

Preformed polymers containing reactive functionalities other than vinyl unsaturation (oxirane, hydroxyl, carboxyl, etc.)... 

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