Multiblock copolymer synthesis via controlled radical polymerization in aqueous dispersions. Part 1: Synthesis of S-tert-alkyl-N,N- alkoxycarbonylalkyldithiocarbamates
In a novel two- or three-step synthetic route, S-(1,4-phenylenebis(propane- 2,2-diyl)) bis(N-methyldithiocarbamate) is reacted at low temperature with various alkyl chloroformates to form various S-tert-alkyl-N,N- alkoxycarbonylmethyl-dithiocarbamate RAFT
Bussels, Raf,Koning, Cor E.
p. 1167 - 1174
(2007/10/03)
MULTIFUNCTIONAL AND BIFUNCTIONAL DITHIOCARBOXYLATE COMPOUNDS, MONOFUNCTIONAL ALKOXYCARBONYL DITHIOCARBAMATE COMPOUND, A METHOD FOR THE PREPARATION OF ALKOXYCARBONYL DITHIOCARBAMATE COMPOUNDS AS WELL AS A METHOD FOR THE PREPARATION OF MULTIBLOCK COPOLYMERS BY MEANS OF RADICAL POLYMERISATION
The present invention relates to a multifunctional dithiocarboxylate compound. The present invention furthermore relates to a bifunctional dithiocarboxylate compound. The present invention also relates to a monofunctional alkoxycarbonyl dithiocarbamate compound. The present invention further relates to a method for the synthesis of alkoxycarbonyl dithiocarbamate compounds. In addition, the present invention relates to a method for the preparation of one or more polymers by means of a radical polymerisation process, using a monofunctional, a bifunctional or a multifunctional dithiocarboxylate compound.
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Page/Page column 25
(2010/02/13)
A safe and efficient procedure to prepare alkyl and alkoxyalkyl chlorides and dichlorides by catalytic decomposition of the corresponding alkyl and alkoxyalkyl chloroformates and bischloroformates with hexabutylguanidinium chloride
Small amounts of hexabutylguanidinium chloride (0.01 mol%) decomposes pure chloroformates or bischloroformates with different lengths of carbon chains by a semicontinuous process to diminish run-away risk, leading to chloride compounds with high yield and purity.
Violleau,Thiebaud,Borredon,Le Gars
p. 367 - 373
(2007/10/03)
Oxyformamidates
Compounds of the formula STR1 WHEREIN A is a linking group, X is an O--CO-- or --SO2 -- group and n is at least 2, are prepared from the corresponding N',N'-disubstituted hydrazides by quaternization and treatment with alkali or reaction with an alkylene epoxide or from the corresponding compound wherein n = 1 and A is a polymerizable group by polymerization. The compounds are unstable to heat and may be used as cross-linking agents for polymers or as chain-extending agents, bonding agents or adhesives.
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(2008/06/13)
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