FIELD: chemistry.
SUBSTANCE: invention relate to a composition used as an agent which promotes cell opening or as a rheology modifier, containing a mixture of compounds of formula 
where: R1 is a monoalkoxy polyoxyalkylene monovalent radical, having average molecular weight of 500-5000; R2 is a divalent hydrocarbon radical, having average molecular weight of 28-500; n is equal to at least 1, and the average value of n is greater than 1; where the mixture is present in the composition in amount of at least 80 mol %. The invention also describes a method of preparing said composition and use thereof, a method of producing polyurethane foam using said composition and the foam itself produced using said method, as well as a mixture used to produce urethane foam, containing said composition.
EFFECT: novel composition which enables to obtain non-shrinking polyurethane foam with open cells.
19 cl, 15 ex
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