摘要 |
<p>Film having good blocking properties and low coefficient of friction is prepared without the presence of antiblock additives from certain thermoplastic ethylene interpolymer products. The thermoplastic ethylene interpolymer products have a density of about 0,935 g/ml or less, a melt flow ratio, I10/I2, of at least about 8, and at least about 0.5 percent by weight of the interpolymer product has a weight average molecular weight of at least about 1,000,000 grams/mole. The interpolymer products are a blend or composite of ethylene polymers or copolymers and comprise at least a first interpolymer of ethylene with at least one alpha-olefin monomer. Preferably, the interpolymer products have a melt index, I2, of from about 0.1 to about 4 grams/10 minutes. The interpolymer products can be made using discrete polymer blends, or preferably, in a multiple reactor sequence. Blown film made from the interpolymer products is especially useful in grocery sack applications.</p> |
申请人 |
THE DOW CHEMICAL CO., MIDLAND, MICH., US |
发明人 |
HAZLITT, LONNIE, G., LAKE JACKSON, TX 77566, US;CHUM, PAK-WING, STEVE, LAKE JACKSON, TX 77566, US;KARANDA, SEEMA, V., MISSOURI CITY, TX 77459, US;LASTOVICA, JOHN, E., III, LAKE JACKSON, TX 77566, US;MUNRO, IAN M., EDMONTON, ALBERTA T6C, CA |