Polyether resins, and process for preparing the same

C - Chemistry – Metallurgy – 08 – G

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C08G 65/28 (2006.01) C08G 59/62 (2006.01) C08G 59/68 (2006.01) C08G 65/26 (2006.01) C09D 171/00 (2006.01) C09D 171/02 (2006.01)

Patent

CA 2005477

A process for the preparation of a polyether resin having an epoxy group content of less than 0.2 meq/g and containing on average from (see formula I)to (see formula II) primary hydroxyl groups, by reacting a glycidyl ester of a C9-11 branched aliphatic acid with an aliphatic primary polyhydric alcohol having n primary hydroxyl groups, and 5 to 16 carbon atoms, n having a value of 3 to 6, in the presence of an etherification catalyst characterised in that the etherification catalyst is a tin, zinc or iron compound.

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