FIELD: polymer production. SUBSTANCE: composition for rigid polyurethane suitable for manufacturing heat-insulation members contains, wt parts: 4,4'- diphenylmethanediisocyanate, 35-45; polyester with molecular weight 200-400, 30-50; ethylene glycol, 2-5; ethanthiol/dimethyl ether (4-5):1 mixture, 5- 10; foam stabilizer, 1.2-7; guanidine-bis- dimethylhexamethylenediamine (catalyst), 0.2-0.5; and water, 1.5-3. Invention allows catalyst consumption to be reduced by a factor of 1.5, heat-insulation capacity to be increased by a factor of 1.1-1.5, and specific consumption of rigid polyurethane foam per unit of product to be reduced by 1.1 times. EFFECT: enhanced process efficiency. 12 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION FOR PREPARING ELASTIC POLYURETHANE FOAM BY MOLDING METHOD | 1998 |
|
RU2142968C1 |
| COMPOSITION FOR PRODUCING RIGID FOAMED POLYURETHANES FOR HEAT INSULATION PURPOSES | 2013 |
|
RU2579576C2 |
| METHOD OF PREPARING OF INFLEXIBLE POLYURETHANE FOAM | 1991 |
|
RU2028316C1 |
| COMPOSITION FOR PREPARING ELASTIC POLYURETHANE FOAM | 1998 |
|
RU2152960C1 |
| METHOD OF PREPARING RIGID THERMOSHAPED POLYURETHANE FOAM | 1991 |
|
SU1824877A1 |
| METHOD OF PRODUCING RIGID FILLED POLYURETHANE FOAM | 2003 |
|
RU2257393C1 |
| PROCESS FOR PREPARING RIGID POLYURETHANE FOAM OR POLYISOCYANURATE FOAM | 1993 |
|
RU2048482C1 |
| COMPOSITION FOR PRODUCING RIGID SPUTTERED POLYURETHANE FOAM | 2012 |
|
RU2517756C1 |
| METHOD OF PRODUCING FILLED POLYURETHANE FOAM FOR HEAT-INSULATING PRODUCTS | 1998 |
|
RU2123013C1 |
| METHOD OF OBTAINING HEAT-INSULATING FOAM POLYURETHANE | 0 |
|
SU1773918A1 |
