C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 15/30 (2006.01) C07B 63/04 (2006.01) C07C 7/20 (2006.01) C09K 15/20 (2006.01) C09K 15/32 (2006.01)
Patent
CA 2293577
The invention relates to a mixture of substances containing one or several compounds with vinyl groups as constituent (A) and a stabilizer (B) as another constituent containing one or several easily volatile nitroxyl compounds as constituent (b1), one or several non-easily volatile nitroxyl compounds as constituent (b2), optionally one or several aromatic nitro compounds as constituent (b3) and optionally one or several iron compounds as constituent (b4). The invention also relates to stabilizers (B) containing constituents (b1) and (b2), (b1) and (b2) and (b3), (b1) and (b2) and (b4), in addition to (b1), (b2), (b3) and (b4). The invention further relates to a method for inhibiting premature polymerization of compounds with vinyl groups during the cleaning thereof or distillation by adding a stabilizer (B), or by adding the constituents of stabilizer (B) as individual substances or in at least two groups of constituents.
L'invention concerne un mélange de substances contenant comme constituant principal (A) un ou plusieurs composés renfermant des groupes vinyliques, et comme autre constituant un stabilisant (B), lequel contient un ou plusieurs composés nitroxyle très volatils comme constituant (b¿1?), un ou plusieurs composés nitroxyle peu volatils comme constituant (b¿2?), éventuellement un ou plusieurs composés nitro aromatiques comme constituant (b¿3?), ainsi qu'éventuellement un ou plusieurs composés ferreux comme constituant (b¿4?). L'invention concerne également des stabilisants (B) renfermant les constituants (b¿1?) et (b¿2?), (b¿1?) et (b¿2?) et (b¿3?), (b¿1?) et (b¿2?) et (b¿4?), ainsi que (b¿1?), (b¿2?), (b¿3?) et (b¿4?), ainsi qu'un procédé pour inhiber la polymérisation précoce de composés renfermant des groupes vinyliques, pendant leur purification ou distillation, par adjonction d'un stabilisant (B) ou bien par adjonction des constituants du stabilisant (B) sous forme de substances individuelles ou bien en au moins deux groupes des constituants.
Dupuis Jacques
Kaliba Claus
Mitulla Konrad
Sutoris Heinz Friedrich
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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