High-frequency heatable plastics
AssigneeThe Dow Chemical Company
InventorsGerald M. Lancaster, James A. Allen
Life of this patent
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Abstract
Olefin polymers which are unsuited, or ill-suited, for heating, sealing, or bonding by the action of high-frequency electromagnetic radiation, especially microwave radiation, are rendered heatable by such radiation by incorporating carbon monoxide, as a comonomer, into the polymer structure. Novel adhesives comprising terpolymers of ethylene/carbon monoxide/acids are disclosed, where the acid moiety of the terpolymer is at least one carboxylic acid which is polymerizable through carbon-to-carbon unsaturation, and salts thereof.
Claims15
A composition of matter comprising a terpolymer of ethylene/carbon monoxide/acid where the said acid comprises acrylic acid or methacrylic acid,
- wherein the ethylene comprises an amount in the range of 20% to 98% by weight, the carbon monoxide comprises an amount in the range of 1% to 40% by weight, and the acid comprises 1% to 40% by weight of the total weight,
- said terpolymer being further characterized as being a substantially uniform, random terpolymer having a melt flow rate, as measured by ASTM D-1238, in the range of about 0.5 to about 2500 g/10 minutes.
Dependencies are inferred from the claim text.