Pre-foamed particles of uncrosslinked, linear low-density polyet

Details Pre-foamed particles of uncrosslinked, linear low-density polyet Pre-foamed particles of uncrosslinked, linear low-density polyet

1988-06-08

1990-08-14

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 59, 521 60, 521143, C08J 922

Patent

active

049488171

ABSTRACT:
Pre-formed particles of an uncrosslinked, linear low-density polyethylene have a crystalline structure characterized in that two endothermic peaks appear on a DSC curve obtained by differential scanning calorimetry of the pre-foamed particles (said DSC curve having been obtained by heating 1-5 mg of the pre-foamed particles to 220.degree. C. at a rate of 10.degree. C./min by a differential scanning calorimeter) and the energy at the endothermic peak on the higher-temperature side is 5 J/g or more. A process for the production of the pre-foamed particles of the uncrosslinked, linear low-density polyethylene is also disclosed.

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