FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing polymer polyol in periodic or semi-periodic mode, where the method involves mixing the base polyol, one or more ethylenically unsaturated monomers, a polymerisation initiator, optionally a macromer and optionally a chain transfer agent, and polymerisation of the obtained mixture at temperature 50-200°C, where one or more miscible compounds are fed at temperature in the range of 50-150% of the temperature (in °C) at which polymerisation takes place. The invention also describes a polyol obtained using the method described above, a method of producing polyurethane foam by foaming a composition containing the disclosed polymer polyol, the foam itself, which is obtained using such a method, as well as moulding an article containing polyurethane foam.
EFFECT: significant cutting of the duration of the cycle of the periodic process, cutting duration of the start phase, as well as solving the problem of scaling and shortcomings associated with scaling when implementing the method of producing polymer polyol.
12 cl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR OBTAINING POLYMER POLYOLS | 2011 |
|
RU2577330C2 |
| MACROMERIC POLYMER-POLYOL STABILIZER PRECURSOR | 1999 |
|
RU2219193C2 |
| STABLE LOW-VISCOSITY POLYMER-POLYOL HAVING HYDROXYL NUMBER ≥35, AND SYNTHESIS METHOD THEREOF | 2006 |
|
RU2423388C2 |
| FOAMED POLYURETHANES WITH IMPROVED FATIGUE STRENGTH DURING REPEATED BENDING | 2008 |
|
RU2487899C2 |
| POLYMERIC POLYOLS AND POLYMER DISPERSIONS OBTAINED FROM HYDROXYL-CONTAINING MATERIALS BASED ON VEGETABLE OIL | 2005 |
|
RU2412954C2 |
| STABILIZER FOR METHODS OF PRODUCING POLYMER POLYOL | 2015 |
|
RU2692255C2 |
| POLYETHER POLYOLS CONTAINING PARTICLE | 2012 |
|
RU2615772C2 |
| POLYOL-BASED COMPOSITION | 1998 |
|
RU2207348C2 |
| POLYMER-MODIFIED POLYOL, AND METHOD OF PREPARING THEREOF | 1994 |
|
RU2128192C1 |
| METHOD OF PRODUCING POLYMER POLYOL | 2015 |
|
RU2713651C2 |
