摘要：

1. A cogeneric mixture of conjugated polyoxypropylene-polyoxyethylene compounds containing in their structure oxypropylene groups, oxyethylene groups and an organic radical derived from an organic compound containing a plurality of reactive hydrogen atoms; the compounds being characterized in that all of the oxypropylene groups are present in polyoxypropylene chains that are attached to the organic radical at the site of a reactive hydrogen atom thereby constituting a polyoxypropylene polymer; the oxyethylene groups being attached to the polyoxypropylene polymer in polyoxyethylene chains; the average molecular weight of the polyoxyp-ropylene polymers in the mixture being at least 900, as determined by hydroxyl number, and the oxyethylene groups present constituting 20-90%, by weight, of the mixture.

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