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US 2022/0033608 A1Published application
Expandable, shelf stable polymer bead
OwnerJames Arthur AUGER, Syed Mahmood AHMED +2inventors
InventorsJames Arthur AUGER, Syed Mahmood AHMED, Abdul Rahim Ahamed ARAFATH, Ali Khalid AL-KHORAYEF
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Abstract
The invention relates to an expandable bead comprising a) a polyolefin selected from polyethylene (PE), polypropylene (PP) and mixtures thereof and b) thermoplastic microspheres encapsulating a blowing agent.
Claims24
An expandable bead comprising
- a) a polyolefin selected from polyethylene (PE), polypropylene (PP) and mixtures thereof and
- b) thermoplastic microspheres encapsulating a blowing agent,
- wherein an aspect ratio, defined as quotient of a largest diameter D1 of the bead to a smallest diameter D2 of the bead, is in the range from ≥1.0 to ≤1.40, wherein the smallest diameter D2 of the bead is in the range from ≥0.5 to ≤2.5 mm.
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A process for making an article comprising providing a plurality of expandable beads which comprises
- a) a polyolefin selected from polyethylene (PE), polypropylene (PP) and mixtures thereof and
- b) thermoplastic microspheres encapsulating a blowing agent and molding the expandable beads.
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Dependencies are inferred from the claim text.