Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Reexamination Certificate
2004-04-08
2008-11-11
Nakarani, D. S (Department: 1794)
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
C428S515000, C428S516000, C428S520000, C428S522000, C525S240000
Reexamination Certificate
active
07449247
ABSTRACT:
The present invention provides olefin polymer compositions that provide an easy-peelable sealant showing low temperature dependence of heat-sealing strength, excellent low-temperature sealability, sealing properties and appearance of the peeling section when used with polypropylene. In particular, the present invention includes as a composition having excellent heat and oil resistance a composition comprising in a particular proportion a propylene-based polymer (A), ethylene-based polymer (B) having a density of not less than 900 kg/m3, a non-crystalline or low-crystalline ethylene/α-olefin copolymer (C) and a tackifier resin (D), and as a composition having excellent oil resistance a composition comprising in a particular proportion an ethylene/unsaturated ester copolymer (E), a propylene-based polymer (A), a non-crystalline or low-crystalline ethylene/α-olefin copolymer (C) and a tackifier resin (D).
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Buchanan & Ingersoll & Rooney PC
Du Pont-Mitsui Polychemicals Co., Ltd.
Nakarani D. S
LandOfFree
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