FIELD: oil and gas industry.
SUBSTANCE: fire-resistant polyurethane foam contains two reaction mixtures. The first reaction mixture comprises a polyisocyanate and optionally a surfactant, and the second mixture comprises a natural polyol in which substantially all of the hydroxyl groups are free, a surfactant, an aqueous foaming agent, a catalyst, a flame retardant, and optional additives. The amounts of the first and second reaction mixtures are such that the obtained isocyanate index is from 20 to 50.
EFFECT: the resulting polyurethane foams show a high degree of resistance to fire and have a high index of biomaterial content, and also have a high "green" index according to ASTM standards.
31 cl, 9 dwg, 8 ex
| Title | Year | Author | Number |
|---|---|---|---|
| FOAM POLYURETHANE COMPOSITION, METHOD OF PRODUCING FOAM POLYURETHANE AND CATALYST COMPOSITION USED THEREFOR | 2012 |
|
RU2572626C2 |
| FOAMED POLYURETHANE | 2008 |
|
RU2462482C2 |
| METHOD FOR PRODUCING POLYETHER POLYOL WITH A HIGH ETHYLENE OXIDE CONTENT | 2018 |
|
RU2793131C2 |
| NEW TENNIS BALL | 2008 |
|
RU2473372C2 |
| FLEXIBLE POLYURETHANE FOAM | 2005 |
|
RU2376321C2 |
| FOAM POLYURETHANES, INCLUDING LIPID-BASED POLYOLS | 2010 |
|
RU2529469C2 |
| POLYURETHANE SYSTEMS HAVING PAINTABILITY WITHOUT SAG AND PRIMERLESS ADHESION ON CONCRETE | 2012 |
|
RU2608485C2 |
| ELASTOMERIC MATERIALS WITH HIGH CONTENT OF HARD UNITS AND METHOD FOR PRODUCTION THEREOF | 2009 |
|
RU2483084C2 |
| METHOD OF PRODUCING RIGID POLYURETHANE OR URETHANE-MODIFIED POLYISOCYANURATE FOAMS | 2018 |
|
RU2767443C2 |
| POLYURETHANE SYSTEMS HAVING NON-SAG AND PAINTABILITY | 2012 |
|
RU2608034C2 |
