FIELD: chemistry.
SUBSTANCE: composition contains crystalline propyelen polymer, elastomeric copolymer of ethylene and propylene and polyethylene. When combined with components with certain values of polydispersity index and characteristic viscosity in given ratios, the composition exhibits high hardness, impact resistance and resistance to bleaching under loading. The composition has flexural modulus higher than 1300 MPa, resistance to bleaching during impact corresponding to diametre of the bleaching area not greater than 1.7 cm, caused by a die falling from a height of 76 cm and diametre of the bleaching area not greater than 1.2 cm, caused by a die falling from a height of 20 cm, and Izod impact resistance at 23°C greater than 14 kJ/m2 and at least equal to 6.5 kJ/m2 at -20°C.
EFFECT: composition has good balance of mechanical properties, is suitable for making articles through pressure casting, such as casings of batteries and consumer goods, and during hot shaping processes.
2 cl, 4 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| POLYOLEFIN COMPOSITIONS WITH HIGH DECOLOURATION AND IMPACT RESISTANCE, AND METHOD OF PREPARING SAID COMPOSITIONS | 2005 |
|
RU2386651C2 |
| IMPACT-RESISTANT POLYOLEFN COMPOSITIONS | 2005 |
|
RU2371458C2 |
| POLYOLEFIN MOTHER BATCH AND COMPOSITION, SUITABLE FOR CASTING MOULDING | 2010 |
|
RU2531352C2 |
| COMPOSITION OF THE MOTHER BATCH FOR PRODUCTION OF THE POLYOLEFIN PRODUCTS BY THE INJECTION MOLDING | 2003 |
|
RU2304598C2 |
| POLYOLEFIN COMPOSITION SHOWING GOOD BALANCE OF RIGIDITY AND IMPACT RESISTANCE CHARACTERISTICS | 1999 |
|
RU2222553C2 |
| POLYOLEFIN ARTICLES | 2004 |
|
RU2342411C2 |
| PROPYLENE POLYMER COMPOSITIONS | 2011 |
|
RU2563652C2 |
| POLYPROPYLENE TUBE | 2002 |
|
RU2299220C2 |
| POLYOLEFIN COMPOSITION FOR PIPELINE SYSTEMS AND SHEETS | 2007 |
|
RU2458085C2 |
| PROPYLENE POLYMER-BASED COMPOSITIONS | 2010 |
|
RU2528384C2 |
