Heat-recoverable composition and article

Details Heat-recoverable composition and article Heat-recoverable composition and article

2005-01-11

2005-01-11

Pyon, Harold (Department: 1772)

Stock material or miscellaneous articles

Hollow or container type article

Shrinkable or shrunk

C428S035800, C428S035900, C428S036900, C428S036910, C428S346000, C428S349000, C138S141000, C138S145000, C524S384000, C524S477000, C524S476000, C524S504000, C524S523000

Reexamination Certificate

active

06841212

ABSTRACT:
Disclosed is an adhesive composition suitable for bonding to a polymeric material and steel. The composition comprises specified proportions of a maleic anhydride-modified propylene-ethylene copolymer resin, a maleic anhydride-modified polyethylene, a polyisobutylene, a terpolymer comprising ethylene, propylene and a non-conjugated diene, and a hydrocarbon resin tackifier. The composition is useful in preparing a heat-recoverable article that is used to provide a protective coating on the joints of a steel pipeline. Also provided is a single sleeve or two-sleeve system for application to the joints of a coated steel pipeline operating at temperatures up to 120° C.

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