@article {2446, title = {Mill Trial of the New Bleaching Agent -THPS}, journal = {Pulp \& Paper-Canada}, volume = {110}, number = {7}, year = {2009}, note = {ISI Document Delivery No.: 508TWTimes Cited: 0Cited Reference Count: 31Hu, T. Q. Williams, T. Schmidt, J. A. James, B. R. Cavasin, R. Lewing, D.}, month = {Sep}, pages = {37-42}, type = {Article}, abstract = {An eight-day mill. trial of adding tetrakis(hydroxymethyl)phosphonium sulfate (THPS) (at 1.0 kg THPS/t pulp) to hydrosulfite (Y) bleaching of spruce SGW pulp shows an average, additional brightness gain of 2.0-2.3 ISO points without any bleach plant or paper machine process upsets. This additional brightness gain, sustained during subsequent one-year commercial implementation of the "THPS + Y" bleaching technology, allows the mill to reach brightness target during the difficult summer period, and to reduce the consumption of expensive brightness-enhancing additives for LWC papers. Overall estimated cost saving to the mill is $250,000/year.}, keywords = {bleach, bleaching, brightness, BRIGHTNESS STABILIZING AGENTS, CHEMISTRY, COMPOUNDS, COSTS, mechanical pulps, PHOSPHONIUM, SODIUM HYDROSULFITE, SULFATE, TERTIARY PHOSPHINES, TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM}, isbn = {0316-4004}, url = {://000270960500008}, author = {Hu, Thomas Q. and Williams, T. and Schmidt, J. A. and James, Brian R. and Cavasin, R. and Lewing, D.} } @article {2446, title = {Mill Trial of the New Bleaching Agent -THPS}, journal = {Pulp \& Paper-Canada}, volume = {110}, number = {7}, year = {2009}, note = {ISI Document Delivery No.: 508TWTimes Cited: 0Cited Reference Count: 31Hu, T. Q. Williams, T. Schmidt, J. A. James, B. R. Cavasin, R. Lewing, D.}, month = {Sep}, pages = {37-42}, type = {Article}, abstract = {An eight-day mill. trial of adding tetrakis(hydroxymethyl)phosphonium sulfate (THPS) (at 1.0 kg THPS/t pulp) to hydrosulfite (Y) bleaching of spruce SGW pulp shows an average, additional brightness gain of 2.0-2.3 ISO points without any bleach plant or paper machine process upsets. This additional brightness gain, sustained during subsequent one-year commercial implementation of the "THPS + Y" bleaching technology, allows the mill to reach brightness target during the difficult summer period, and to reduce the consumption of expensive brightness-enhancing additives for LWC papers. Overall estimated cost saving to the mill is $250,000/year.}, keywords = {bleach, bleaching, brightness, BRIGHTNESS STABILIZING AGENTS, CHEMISTRY, COMPOUNDS, COSTS, mechanical pulps, PHOSPHONIUM, SODIUM HYDROSULFITE, SULFATE, TERTIARY PHOSPHINES, TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM}, isbn = {0316-4004}, url = {://000270960500008}, author = {Hu, Thomas Q. and Williams, T. and Schmidt, J. A. and James, Brian R. and Cavasin, R. and Lewing, D.} } @article {2536, title = {Reversible decomposition of mono(alpha-hydroxy)phosphines and their reaction with alpha,beta-unsaturated aldehydes}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {87}, number = {4}, year = {2009}, note = {ISI Document Delivery No.: 431IGTimes Cited: 4Cited Reference Count: 24Moiseev, Dmitry V. Marcazzan, Paolo James, Brian R.}, month = {Apr}, pages = {582-590}, type = {Article}, abstract = {{The mono (alpha-hydroxy) phosphines R2PCH(OH)R{\textquoteright} (R = Ph, R{\textquoteright} = H, Et, CH2Ph, Ph, p-X-C6H4; R = cyclohexyl, R{\textquoteright} = Ph) are prepared under solvent-free conditions by a 1:1 reaction of Ph2PH with the appropriate aldehyde, and their stabilities (with respect to reversible dissociation into reactants), studied in DMSO, Et2O, and MeOH, increase with decreased basicity of the hydroxyphosphine; for example, for the Ph2PCH (OH) C6H4-p-X phosphines, stability decreases in the order:X = CN > Cl > F > H > Me > OMe. A 1:1 room-temperature reaction of the (alpha-hydroxy) phosphines (except for R{\textquoteright} = H) with cinnamaldehyde in DMSO slowly yields the known mono-and di-phosphines Ph2PCH(Ph)CH2CHO (4a) and Ph2PCH(Ph)CH2CH(PPh2)OH (10a), and the corresponding R{\textquoteright}CHO aldehyde. In MeOH, the sequentially formed intermediates}, keywords = {(alpha-hydroxy)phosphines, alpha, beta-unsaturated aldehydes, CHEMISTRY, CHLORIDE, diphenylphosphine, FORMALDEHYDE, hydrophosphination, LIGNIN, NUCLEAR MAGNETIC-RESONANCE, PHOSPHONIUM CHLORIDE, TERTIARY PHOSPHINES, TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM, TRIS(HYDROXYMETHYL)PHOSPHINE, WATER}, isbn = {0008-4042}, url = {://000265054200007}, author = {Moiseev, D. V. and Marcazzan, P. and James, Brian R.} }