FIELD: chemistry.
SUBSTANCE: invention relates to polyether polyols containing polymer particles , their preparation and use for the preparation of polyurethanes. The proposed polyether polyols containing polymer particles are obtained by in-situ polymerization of olefinically unsaturated monomers selected from styrene and/or acrylonitrile, in polyether polyol, and characterized in that the polymerization is carried out in the presence of at least one compound (A) having a polysiloxane chain, to which at least one polyether chain is connected with at least one reactive hydrogen atom and at least one polyether chain is connected with at least one olefinic double bond.
EFFECT: invention allows producing rigid foams with low duration of extraction from the press mould, low heat-conductivity and optimum mechanical properties.
12 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| FOAMED POLYURETHANES WITH IMPROVED FATIGUE STRENGTH DURING REPEATED BENDING | 2008 |
|
RU2487899C2 |
| METHOD OF OBTAINING HARD FOAM POLYURETHANES | 2010 |
|
RU2525240C2 |
| METHOD OF PRODUCING SOLID POLYURETHANE FOAM MATERIALS | 2012 |
|
RU2585290C2 |
| METHOD OF PRODUCING POLYESTER POLYOLS | 2011 |
|
RU2585629C2 |
| EXTRUDED POLYMER PROFILED ARTICLE COMPRISING CONTINUOUSLY INTRODUCED INSULATION ELEMENTS | 2012 |
|
RU2604626C2 |
| PROCESS FOR PRODUCING RIGID POLYURETHANE FOAMS | 2012 |
|
RU2601755C2 |
| POLYURETHANE BOTTOM LAYER WITH LOW EMANATION LEVEL, PULVERIZABLE SYSTEM BASED ON POLYURETHANE FOR CREATION OF SUCH BOTTOM LAYER AND APPLICATION OF SUCH BOTTOM LAYER | 2007 |
|
RU2442799C2 |
| METHOD OF PRODUCING FIRE-RESISTANT POLYURETHANE FOAM WITH GOOD LASTING OPERATIONAL PROPERTIES | 2010 |
|
RU2540950C2 |
| POLYURETHANE MOLDED ARTICLES WITH EXCELLENT FLEXIBILITY AT LOW TEMPERATURES | 2016 |
|
RU2702351C2 |
| METHOD FOR PRODUCING FOAM COMPOSITE ELEMENT | 2010 |
|
RU2551503C2 |
