Patent ID: 11879586
Assignee: BRUGG ROHR AG HOLDING
Field: Other special machines (Mechanical engineering)
Classification: CPC F  B  C | IPC B  C  F

Claim 0:
1. A thermally insulated conduit pipe (1), comprising
a. at least one rigid, medium pipe (4);
b. at least one thermal insulation (3) arranged around the medium pipe, wherein the thermal insulation (3) comprises a foam comprising
(1) polymer components selected from the group consisting of polyurethanes, polyisocyanurates, thermoplastic polyesters and thermoplastic polyolefins; and
(2) a cell gas containing
(i) 0-50 vol % (cyclo)-alkanes selected from the group consisting of propane, butane, pentane, cyclopentane, hexane and cyclohexane,
(ii) 0-50 vol % CO2, and
(iii) 10-100 vol % hydrofluoroolefins (HFOs) of formula (I), wherein R5 and R6 are each independently H, F, Cl, or CF3; and

c. at least one outer jacket (2) in the form of a rigid pipe around the thermal insulation.