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US 8,550,024 B2Granted
Three-layer rotomoulded motorboats
AssigneeTotal Petrochemicals Research Feluy
InventorsEric Maziers, Patrick Bardon
Life of this patent
Estimating the term…
Abstract
This invention discloses three-layer rotomolded motorboats having excellent floatability prepared from foamed polyethylene.
Claims16
An article comprising:
- a) an external skin layer comprising from 30 to 50 wt %, based on the weight of the external skin layer, of a resin composition and from 50 to 70 wt % of a metallocene-produced polyethylene, the same as, or different from that of the resin composition;
- b) an intermediate foamed layer comprising from 95 to 99.8 wt %, based on the weight of the foamed layer, of the resin composition and from 0.2 to 5 wt % of a foaming agent;
- and
- c) an internal skin layer consisting of a metallocene-produced polyethylene, the same as, or different from that used either in the external skin layer or in the resin composition,
- wherein the resin composition comprises from 80 to 98 wt %, based on the weight of the resin composition, of metallocene-produced polyethylene, from 0 to 20 wt % of grafted polyethylene and from 0 to 20 wt % of ionomer, with the restriction that at least one of the grafted polyethylene or the ionomer is not 0 wt %.
2 more elements
A boat having a hull comprising:
- a) an external skin layer comprising from 30 to 50 wt %, based on the weight of the external skin layer, of a resin composition and from 50 to 70 wt % of a metallocene-produced polyethylene, the same as, or different from that of the resin composition;
- b) an intermediate foamed layer comprising from 95 to 99.8 wt %, based on the weight of the foamed layer, of the resin composition and from 0.2 to 5 wt % of a foaming agent;
- and
- c) an internal skin layer consisting of a metallocene-produced polyethylene, the same as, or different from that used either in the external skin layer or in the resin composition,
- wherein the resin composition comprises from 80 to 98 wt %, based on the weight of the resin composition, of metallocene-produced polyethylene, from 0 to 20 wt % of grafted polyethylene and from 0 to 20 wt % of ionomer, with the restriction that at least one of the grafted polyethylene or the ionomer is not 0 wt %.
2 more elements
Dependencies are inferred from the claim text.