Process for the preparation of polyalkylene glycol bis-ethers

Details Process for the preparation of polyalkylene glycol bis-ethers Process for the preparation of polyalkylene glycol bis-ethers

C - Chemistry, Metallurgy

07

C

260/646.5, 260/6

C07C 41/01 (2006.01) C07C 43/10 (2006.01) C08G 65/331 (2006.01)

Patent

CA 2032980

ABSTRACT A process for the preparation of polyalkylene glycol bis- ethers having the general formula I R1-O-(A1-O)m-(A2-O)n-R2 I in which; R1 and R2 are straight-chain or branched C1-C30-alkyl or C2-C30-alkylene groups; aryl radicals which can also be substituted by C1-C4 alkyl groups having a total of up to 12 carbon atoms; or aryl alkyl radicals having a total of up to 20 carbon atoms; A1 and A2 are 1,2-alkylene groups having from 2-4 carbon atoms; and, m and n are from 1 to 100, by heating an alkoxylated alcohol or an alkoxylated phenol IIa R1-O-(A1-O)m-H IIa with an alkoxylated alcohol or phenol IIb H-O-(A2-O)n-R2 IIb in the presence of an acid catalyst.

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