METHOD OF PRODUCING FLEXIBLE POLYURETHANE FOAM Russian patent published in 2016 - IPC C08G18/10 C08G18/18 C08G18/22 C08G18/32 C08G18/66 C08J9/00

Abstract RU 2604531 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing flexible polyurethane foam. Method involves conducting a reaction between polyisocyanate and a polyol composition with isocyanate index 95-125 in presence of water, a reactive tertiary amine-based catalyst containing at least one hydrogen atom reactive relative to isocyanate, and a catalyst based on zinc carboxylate. Herewith the polyol composition contains polyoxyethylene-polyoxypropylene-polyol (a1) characterized by the oxyethylene content of 50-95 wt. % by weight of (a1) and polyoxypropylene-polyol (a2) with the weight ratio between polyols (a1) and (a2) within the range from 90:10 to 50:50.

EFFECT: using in the method of zinc carboxylates in combination with reactive catalysts based on tertiary amine allows considerably reducing the level of volatile organic compounds (VOC) in the obtained flexible foamed polyurethane, as well as achieving the desired combination of mechanical properties and characteristics of durability.

5 cl, 4 tbl, 19 ex

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RU 2 604 531 C2

Authors

Makken Jokhan Antuan Stefan

Zhonshere Tomas Zhjulen

Vandenbruk Jan

Dates

2016-12-10—Published

2012-07-24—Filed