Sealant for polypropylene and easily openable hermetically...

Details Sealant for polypropylene and easily openable hermetically... Sealant for polypropylene and easily openable hermetically...

2005-08-23

2005-08-23

Pyon, Harold (Department: 1772)

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

Synthetic resins

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

C525S240000, C428S035700

Reexamination Certificate

active

06933346

ABSTRACT:
A sealant for polypropylene consisting essentially of a composition comprising a high-pressure-processed low-density polyethylene (A) having a density of 910 to 930 kg/m3and an MFR of 0.5 to 20 g/10 min; and an ethylene/α-olefin copolymer (B) having a density of 860 to less than 890 kg/m3, an MFR of 0.5 to 40 g/10 min and an Mw/Mn of 1.5 to 3, and/or a linear low-density polyethylene (C) having a density of 890 to 940 kg/m3and an MFR of 0.2 to 30 g/10 min. In this composition, the component (A) is contained in an amount of 10 to 85% by weight, the component (B) in an amount of 50% by weight or less, and the component (B) and component (C) in a total amount of 15 to 90% by weight, based on the total weight of components (A), (B) and (C).

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