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4,4 -Methylenebis carbamate

Similarly, nitroben2ene, carbon monoxide, and methanol can react sequentially in the presence of noble metal catalysts, to produce methyl A/-phenylcarbamate [2603-10-3] (4). The phenylcarbamate is subsequently coupled with formaldehyde [50-00-0] to yield the methylenebis(carbamate) (5) which is pyroly2ed to yield methylene diphenyl diisocyanate (MDI) (23). [Pg.448]

The direct formation of tetrazocane tetracarbamates has been reported to occur in fairly good yields by refluxing methylenebis(carbamates) (333) with paraformaldehyde in the presence of toluenesulfonic acid. Under these conditions the tetrazocanes (335) appear to... [Pg.687]

This lowering of the selectivity may be attributed to competitive binding between the hydroxyl and amide groups to iridium [37]. In entries 6, 7 and 8, the directivity of the hydroxyl group at the bishomoallylic position effectively overrides the effect of the carbamate unit [38]. In the hydrogenation of methylenebi-... [Pg.649]

Diaion WK40. See Polyacrylic acid Diak No. 4. See 4,4 -Methylenebis (cyclohexylamine) carbamate Diald 15] Diald25] Diald. SeeGlutaral Dialead . See Carbon fiber Dialen 12. See Dodecene-1 Dialen 14. See Tetradecene-1 Dialgin LV lao. SeeAlgin Dialkyl (C7-C9) adipate. See Di (C7-9 alkyl) adipate... [Pg.1199]

Methylenebis (cyclohexanamine) 4,4 -Methylenebis (cyclohexylamine). See Bis (p-aminocyclohexyl) methane 4,4 -Methylenebis (cyclohexylamine) carbamate CAS 13253-82-2 15484-34-1 EINECS/ELINCS 236-239-4... [Pg.2618]

Ammonium xylenesulfonate Ditridecyl sodium sulfosuccinate Sodium cumenesulfonate Sodium xylenesulfonate processing aid, elastomers Butyl acetyl ricinoleate C5 hydrocarbon resin, aliphatic 4,4 -Methylenebis (cyclohexylamine) carbamate... [Pg.5574]

A phosgene-free process for preparing urethane and carbonate monomers and polymers has been reported [257]. The process involves reaction of CO2 with amines (e.g. 4,4 -methylenebis(cydohexylamine)), alcohols, or amino alcohols in the presence of an amidine- or guanidine-type base (e.g. N-cydohexyl-N, N, N",N"-tetra-ethylguanidine), followed by treatment of the resulting ammonium carbamate or carbonate salt with a primary or secondary hydrocarbyl halide of a specified structure in a polar, aprotic solvent (e.g. N-methylpyrroUdinone). When hydrocarbyl dihalides or -polyhalides are used in the second step, polyurethanes and polycarbonates are formed. [Pg.581]

C29 4,4 -methylenebis[jV-methyl-. See Carbamic acid, (methylenedi-j -phenylene) bis [methyl-. ... [Pg.56]

C17H18N2O2S, N,N -Diacetyl-3-methylthiobenzidine, 46B, 92 C17H18N2O4, Dimethyl 4,4 -methylenebis(phenylcarbamate), 46B, 93 Cl7H19N3O6S, p-Dimethylaminophenyl N-methyl-N-(p-nitrophenylsulphon-ylmethyl)-carbamate, 44B, 92 C17H2 2ClN30i, Auramine perchlorate, 32B, 100... [Pg.53]

See other pages where 4,4 -Methylenebis carbamate is mentioned: [Pg.224]    [Pg.621]    [Pg.751]    [Pg.5047]    [Pg.5048]    [Pg.5575]    [Pg.6428]    [Pg.6439]    [Pg.6916]    [Pg.142]   
See also in sourсe #XX -- [ Pg.420 ]



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