Low haze high strength polyethylene compositions

Details Low haze high strength polyethylene compositions Low haze high strength polyethylene compositions

2005-03-22

2005-03-22

Rabago, Roberto (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C526S348000, C526S348100, C526S352000

Reexamination Certificate

active

06870010

ABSTRACT:
A low density substantially linear polyethylene composition is described, including some that have: (a) a density of 0.935 g/cc or less; (b) a Haze of 10% or less, (c) a Dart Impact of 100 grams/mil or more, (d) an average overall long chain branching index of 0.95 or more; and (e) a slice long chain branching (SLCB) index of 0.85 or less for any portion of the composition having a molecular weight of 100,000 or above.

REFERENCES:
patent: 4438238 (1984-03-01), Fukushima et al.
patent: 5110685 (1992-05-01), Cross et al.
patent: 5258449 (1993-11-01), Firdaus et al.
patent: 5338589 (1994-08-01), Böhm et al.
patent: 5378764 (1995-01-01), Benham et al.
patent: 5494965 (1996-02-01), Harlin et al.
patent: 5635262 (1997-06-01), Best et al.
patent: 5795941 (1998-08-01), Cree et al.
patent: 6090893 (2000-07-01), Harlin et al.
patent: 6147174 (2000-11-01), Holtcamp et al.
patent: 6207606 (2001-03-01), Lue et al.
patent: 6255426 (2001-07-01), Lue et al.
patent: 6339134 (2002-01-01), Crowther et al.
patent: 6388017 (2002-05-01), McDaniel et al.
patent: 6388115 (2002-05-01), Crowther et al.
patent: 6420580 (2002-07-01), Holtcamp et al.
patent: 6441096 (2002-08-01), Bäckman et al.
patent: 6476166 (2002-11-01), Holtcamp et al.
patent: 6476171 (2002-11-01), Lue et al.
patent: 6489413 (2002-12-01), Floyd et al.
patent: 6492472 (2002-12-01), Lue et al.
patent: 6562905 (2003-05-01), Nummila-Pakarimen et al.
patent: 6605675 (2003-08-01), Mawson et al.
patent: 6608149 (2003-08-01), Mawson et al.
patent: 6689847 (2004-02-01), Mawson et al.
patent: 20020010077 (2002-01-01), Lue et al.
patent: 20020058766 (2002-05-01), Crowther et al.
patent: 20020058828 (2002-05-01), Crowther et al.
patent: 20020103310 (2002-08-01), Szul et al.
patent: 20020107342 (2002-08-01), Mawson et al.
patent: 20020156208 (2002-10-01), Floyd et al.
patent: 20020161141 (2002-10-01), Mawson et al.
patent: 20030008980 (2003-01-01), Mawson et al.
patent: 20030088038 (2003-05-01), Vaughan et al.
patent: 20030105251 (2003-06-01), Crowther et al.
patent: 20030171512 (2003-09-01), Mawson et al.
patent: 20030171513 (2003-09-01), Mawson et al.
patent: 20030229186 (2003-12-01), Mawson et al.
patent: WO 9422948 (1994-10-01), None
patent: WO 9747682 (1997-12-01), None
Cooke et al., ANTEC (1989) 22-27.*
D.L. Cooke and T. Tikuisis, “Addition of Branched Molecules and High Molecular Weight Molecules to Improve Optical Properties of LLDPE Film” ANTEC p. 22 (1989).
A.M. Sukhadia, “The Effects of Molecular Structure, Rheology, Morphology and Orientation on Polyethylene Blown Film Properties” ANTEC p. 160 (1998).
F.C. Stehling, C.S. Speed, and L. Westerman, “Causes of Haze of Low-Density Polyethylene Blown Films” Macromolecules, 14, 698, (1981).
A.M. Sukhadia, D.C. Rohlfing, M.B. Johnson, G.L. Wilkes, “A Comprehensive Investigation of the Origins of Surface Roughness and Haze in Polyethylene Blown Films” AJournal of Applied Polymer Science, 85, 2396-2411 (2002).
M.B. Johnson, G.L. Wilkes, A.M. Sukhadia, D.C. Rohlfing, “Optical Properties of Blown and Cast Polyethylene Films: Surface Versus Bulk Structural Considerations” Journal of Applied Polymer Science, 77, 2845-2864, (2002).
E. Andreassen and A. Larsen, “Haze of Polyethylene Films—Effects of Material Parameters and Clarifying Agents” Polymer Engineering and Science, 42, 5, 1082-1097 (2002).
A. Prasad, R. Shroff, S. Kane, G. Beaucage, “Morphological study of HDPE blown films by SAXS, SEM and TEM: a relationship between the melt elasticity parameter and lamellae orientation” Polymer, 42, 3103-3113 (2001).
ATOFINA Petrochemicals, “Finathene® HMW-HDPE A blend Study of Finathene® HMW-HDPE And LLDPE Resins” Atofina Film Technical Bulletin 2ndin a Series.
Debra J. Houska and Steve A. Best, “Blends of mLLDPE with MMW-HDPE for Films with Improved Property Stiffness Balance” 1997 Polymers, Lamination, & Coatings Conference p. 633-638 (1997).

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