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US 6,211,332 B1Granted
Process for reducing the molecular weight of copolymers and terpolymers of ethylene
AssigneeEnichem S.p.A.
InventorTiziano Tanaglia
Life of this patent
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Abstract
Process for the reduction of the molecular weight of a polymeric material selected from EPM copolymer and EPDM terpolymer and relative mixtures, which comprises the treatment of the polymeric material with at least one hydroperoxide.
Claims13
A process for the reduction of the molecular weight of a polymeric material, comprising treating the polymeric material with at least one hydroperoxide, said hydroperoxide being present in a quantity sufficient to affect the molecular weight reduction;
- wherein the temperature ranges from 80° C. to 250° C.;
- and wherein said polymeric material is selected from the group consisting of EPM polymer having a propylene molar content ranging from 16 to 50%, EPDM and a mixture thereof.
Dependencies are inferred from the claim text.