公开(公告)号：DE102008032561A1

公开(公告)日：2009-01-22

申请号：DE102008032561

申请日：2008-07-10

Applicant: BASF SE

Inventor： LIPOWSKY GUNTER ,  VICARI MAXIMILIAN ,  HAREMZA SYLKE ,  REINIG HANS-WALTER ,  DIEHL RAINER

IPC: C07C11/24

Abstract: Alkyne cleaning involves utilizing a solvent, to which a polymerization inhibitor is added. The polymerization inhibitor is selected from N-oxylene, secondary amine or their mixture. The solvent is selected from N-alkyl substituted pyrrolidone, dimethylformamide, dimethylacetamide, lactone, alcohol, mineral oils, water, alkaline solutions, alkane or their mixture. The N-oxylene has general formula (I), and secondary amine has general formula (II). n,m : 0, 1, 2, 3, 4 or 5; R 1>, R 2>, R', R'', R 5>-R 10>H, 1-8C-alkyl, 3-8C-cycloalkyl, 3-8C-heterocycle, 2-8C-alkenyl, 2-8C-alkinyl, 5-16C-aryl, 5-16C-heteroaryl or functional group selected from=O, -NHR 11>, -N(R 11>) 2, -SR 11>, -OR 11>, -CHO, -C(=O)R 11>, -COOR 11>, -OC(=O)R 11>or -NHC(=O)R 11>, where R 11>=H, 1-8C-alkyl, 3-8C-cycloalkyl, 3-8C-heterocycle, 2-8C-alkenyl, 2-8C-alkinyl, 5-16C-aryl or 5-15C-heteroaryl, where the aryl and heteroaryl groups are bonded via a carbon bridge with 1-8C or heteroatom; and R 13>, R 14>, R, R''', R 17>-R 23>H, 1-8C-alkyl, 3-8C-cycloalkyl, 3-8C-heterocycle, 2-8C-alkenyl, 2-8C-alkinyl, 5-16C-aryl, 5-16C-heteroaryl or a functional group selected from=O, -NHR 24>, -N(R 24>) 2, -SR 24>, -OR 24>, -CHO, -C(=O)R 24>, -COOR 24>, -OC(=O)R 24>or -NHC(=O)R 24>, where R 24>=same as variable group of R 11>. Provided that: (A) one of R 1>, R 2>, R', R'', R 5>-R 10>of two different molecules of formula (I) forms a saturated or unsaturated, branched or normal carbon bridge with 2-20 atoms between these two molecules, where carbon bridge contains hetero atom selected from N, O, P or S, and if necessary a functional group selected from -NHR 12>, -N(R 12>) 2, -SR 12>, -OR 12>or=O, where R 12>=same as variable group of R 11>. An independent claim is included for a mixture, which contains a solvent and a polymerization inhibitor. [Image] [Image].