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US 11,203,672 B2Granted
Efficient curative for free radically-crosslinkable polymers
AssigneeArkema Inc.
InventorsLeonard H. Palys, Marina Despotopoulou, Peter R. Dluzneski
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AssigneeArkema Inc.
InventorsLeonard H. Palys, Marina Despotopoulou, Peter R. Dluzneski
Estimating the term…
An organic peroxide composition is provided which is liquid or near liquid at 25° C. or a low melting solid and which includes at least one ethylenically unsaturated organic peroxide (i.e., an organic peroxide containing at least one carbon-carbon double bond) and at least one saturated organic peroxide. The organic peroxide composition may further include at least one mono- and/or poly-unsaturated compound and at least one free-radical trap. The organic peroxide can be blended into a polymer such as a powdered or granular polyethylene resin. This peroxide-containing polymer can be used in rotational molding, wherein the polymer is added to a mold which is heated in an oven with rotation, thereby melting the polymer and coating the inside of the mold.
An organic peroxide composition comprising (i) at least one monomeric ethylenically unsaturated organic peroxide in an amount of 0.5%-30% by weight, (ii) at least one saturated organic peroxide in an amount of 15%-40% by weight, (iii) at least one free radically-reactive mono- or poly-unsaturated compound, other than said ethylenically unsaturated organic peroxide, in an amount of 35%-70% by weight, that contains at least one carbon-carbon double bond, and (iv) at least one free radical trap compound in an amount of 1%-10% by weight;
Dependencies are inferred from the claim text.