Title:
MULTILAYER PIPE AND MANUFACTURING METHOD OF MULTILAYER PIPE
Document Type and Number:
Japanese Patent JP2021139428
Kind Code:
A
Abstract:
To provide a multilayer pipe capable of reducing heat conductivity, and a manufacturing method of the multilayer pipe.SOLUTION: A multilayer pipe comprises a first layer 1 and a second layer 2 which is disposed outside of the first layer 1. The first layer 1 contains a hydrogel, and the second layer 2 contains a thermoplastic resin. The hydrogel means a soft gel which has a three-dimensional structure of a network structure and is swollen by containing a quantity of water. As the hydrogel, a gel containing synthetic polymers of polyacrylic amide, poly-isopropyl acrylic amide, polyvinyl alcohol, etc., an inorganic gel such as a silica gel, a titanium oxide gel, etc., a gel containing polysaccharide such as agarose and alginate, a gel containing protein of gelatin, etc., are cited.SELECTED DRAWING: Figure 1
Inventors:
NAKAO RYOSUKE
Application Number:
JP2020037000A
Publication Date:
September 16, 2021
Filing Date:
March 04, 2020
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
F16L11/04
Attorney, Agent or Firm:
Patent business corporation Miya saki, table of contents patent office