Claims
- 1. A blend which comprises;A) a heterogeneous or homogenous linear ethylene homopolymer or interpolymer; B) a branched homopolymer or interpolymer; wherein said blend has; 1) a melt index, I2, of about 0.05 to about 20 g/10 min; 2) a flexural modulus of ≦30,000 psi or ≦100,000 psi; 3) a melt strength of ≧2 eN; 4) a melt extensibility of ≧25 mm/sec; and 5) wherein said melt strength of said blend meets the following relationship; melt strength≧FMS*; where: A=3.3814*(I2)−0.6476 and B=16.882(I2)−0.6564; where I2 is the measured melt index of the blend; f is the weight fraction of the linear polyethylene in the blend and FMS is ≧1.1.
- 2. The blend of claim 1 whereinA) Component A has a melt index, I2, of less than about 60 g/10 min and is a heterogeneous or homogeneous linear ethylene homopolymer or heterogeneous or homogeneous linear interpolymer of ethylene with at least one C3-C20 α-olefin, and B) Component B is selected from the group consisting of LDPE, EVA, and EAA; and wherein said blend has; 1) a melt index, I2, of about 0.1 to about 10 g/10 min; 2) a flexural modulus of ≦25,000 psi; 3) a melt strength of ≧7 eN; and 4) a melt extensibility of ≧50 mm/sec; and 5) FMS is ≧1.25.
- 3. The blend of claim 1 whereinA) Component A has a melt index, I2, of less than about 30 g/10 mins, and is a linear or substantially linear ethylene homopolymer or a linear or substantially linear ethylene /C3-C8 α-olefin interpolymer; and B) Component B is LDPE; wherein said blend has; 1) a melt index, I2, of about 0.2 to about 7 g/10 min; 2) a flexural modulus of ≦20,000 psi.
- 4. The blend of claim 3 wherein Component A has a melt index, I2, of less than about 15 g/10 min, andwherein said blend has; 1) a melt index, I2, of about 0.5 to about 5 g/10 min; and 2) FMS is ≧2.5.
- 5. A blend comprising the blend of claim 1 or claim 1, further comprising one or more additional polymers selected from the group consisting of low density polyethylene, high density polyethylene (HDPE), linear low density polyethylene (LLDPE), ethylene styrene itnerpolymers (ESI), polypropylene (PP), polystyrene (PS), ethylene-propylene rubber and styrene-butadiene rubber.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a Divisional application from U.S. Ser. No. 09/927,908, filed Aug. 9, 2001, and now U.S. Pat. No. 6,545,094 which application claims the benefit of U.S. Provisional Application No. 60/274,789, filed Mar. 9, 2001, the entire contents of which are herein incorporated by reference.
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Provisional Applications (1)
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Number |
Date |
Country |
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60/274789 |
Mar 2001 |
US |