NOVEL FOAM MODIFIER, FOAM PRODUCED FROM SAID FOAM MODIFIER, AND PROCESS FOR PRODUCING SAID FOAM Russian patent published in 2010 - IPC C08G18/76 C08G18/66 C08G18/48 

FIELD: chemistry.

SUBSTANCE: invention relates to novel foam modifiers for producing flexible foam. Flexible foamed polyurethane with density of less than 128 kg/m³ is obtained by reacting an aromatic polyisocyanate component with functionality of at least approximately 2.0, with a component capable of reacting with isocyanate, which contains one or more polyoxyalkylenepolyester polyols having 2-8 hydroxyl groups with OH number between approximately 11 and approximately 280, and containing less than 30 wt % copolymerised oxyethylene from the weight of oxyethylene, and a foam modifier. The foam modifier contains 35-75 wt % of at least one low-molecular weight compound selected from a group consisting of 1,3-propanediol, 1,3-butanediol and 1,4-butanediol and their mixture, 20-60 wt % of one or more polyester polyols containing 2-8 hydroxyl groups per molecule with OH number from approximately 11 to approximately 280, and containing more than 50 wt % compolymerised oxyethylene from the weight of oxyethylene, and 5-25 wt % dipropylene glycol. The reaction takes place in the presence of one or more foaming agents, one or more catalysts and one or more surfactants.

EFFECT: improved operational characteristics and properties of flexible foam.

25 cl, 11 tbl