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US 8,475,933 B2Granted
Interpolymers suitable for multilayer films
AssigneeDow Global Technologies LLC
InventorsRajen M. Patel, David W. Fuchs, Pradeep Jain, Seema Karande, Mehmet Demirors, Mark Grant Spencer, Kim L. Walton, Angela N. Taha, Phillip D. Hustad, Roger L. Kuhlman, Anthony J. Castelluccio
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Abstract
The present invention relates to compositions and processes of making and using interpolymers having a controlled molecular weight distribution. Multilayer films and film layers derived from novel ethylene/α-olefin interpolymers are also disclosed.
Claims20
An ethylene/α-olefin interpolymer which has
- (i) a DSC curve characterized by an area under the DSC curve from the melting peak temperature to the end of melting is at least about 17% of the total area under the DSC melting curve from −20° C. to the end of melting;
- (ii) a density from about 0.875 g/cc to about 0.915 g/cc;
- and
- (iii) a I10/I2 from 5.5 to 6.5.
1 more element
A film comprising:
- an ethylene/α-olefin interpolymer which has
- (i) a DSC curve characterized by an area under the DSC curve from the melting peak temperature to the end of melting is at least about 17% of the total area under the DSC melting curve from −20° C. to the end of melting;
- (ii) a density from about 0.875 g/cc to about 0.915 g/cc;
- and
- (iii) a I10/I2 from 5.5 to 6.5.
2 more elements
A multilayer film comprising:
- a) a base layer comprising a first polymer;
- b) a tie layer comprising a second polymer;
- and
- c) a sealant layer comprising an ethylene/α-olefin interpolymer,
- wherein the tie layer is between the base layer and the sealant layer and wherein the ethylene/α-olefin interpolymer of the sealant layer has
- (i) DSC curve characterized by an area under the DSC curve from the melting peak temperature to the end of melting is at least about 17% of the total area under the DSC melting curve from −20° C. to the end of melting;
- (ii) a density from about 0.875 g/cc to about 0.915 g/cc;
- and
- (iii) a I10/I2 from 5.5 to 6.5.
6 more elements
Dependencies are inferred from the claim text.