Pipes containing heat insulating material
AssigneeHutchinson
InventorsJean-Michel Simon, Nicolas Garois
Life of this patent
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Abstract
The invention concerns the use of a material comprising at least a crosslinkable elastomer selected from the group consisting of butyl rubber, halobutyls and brominated isobutylene and para-methylstyrene copolymers, and at least a non-crosslinkable elastomer with low thermal conductivity for thermal insulation, in particular for pipes. The invention also concerns a pipe, and, in particular a submarine oil pipe for great depths, comprising at least a layer of said material.
Claims13
The use of a material comprising at least one crosslinkable elastomer selected from the group consisting of butyl rubber, halobutyls and brominated copolymers of isobutylene and of para-methylstyrene and at least one noncrosslinkable elastomer of low thermal conductivity for producing thermal insulation.
The use as claimed in any one of the preceding claims, in which the material comprises:
- between 30 and 120 parts by weight of said crosslinkable elastomer,
- between 20 and 100 parts by weight of said noncrosslinkable elastomer,
- between 0 and 100 parts by weight of said thermoplastic, and
- between 0 and 100 parts by weight of said thermosetting plastic.
The use as claimed in any one of the preceding claims, in which the material exhibits a thermal conductivity of less than or equal to 0.140 W.m−1.K−1, preferably of less than or equal to 0.130 W.m−1.K−1.
The use as claimed in any one of the preceding claims, in which the material additionally comprises hollow glass microspheres.
The use as claimed in any one of the preceding claims for bringing about the thermal insulation of a pipe.
A pipe, characterized in that it is an undersea oil pipe at great depth.
Dependencies are inferred from the claim text.