Sealing of containers

Details Sealing of containers Sealing of containers

C - Chemistry, Metallurgy

09

K

206/19, 400/5057

C09K 3/10 (2006.01) C09J 125/14 (2006.01)

Patent

CA 1282892

ABSTRACT A sealing gasket for containers having good oil resistance and comprising a copolymer of styrene and an acrylic ester. Tackifiers, fillers and stabilizers may also be used in conventional amounts. A preferred gasket is formed of an aqueous latex of a styrene-acrylate copolymer, a filler, a stabilizer and 0 to 30% of a tackifier resin. More preferably, the copolymer contains from 0.5 to 15% of a non-esterified ethylenically unsaturated carboxylic acid such as acrylic or methacrylic acid. The gasket, when tested by the Parma open oil test, has values for loss of adhesion, loss of coherence and degree of softening each not greater than 1 and preferably said values are 0.

495973

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