DEVICE AND METHOD FOR MANUFACTURING EXPANDED POLYURETHANE FOAM, AND HEAT INSULATION STRUCTURE

WIPO Patent Application WO/2013/027416

A1

　An expanded polyurethane foam is manufactured by mixing a first composition having a polyisocyanate as the main component with an expandable second composition. The expandable second composition is prepared by mixing a main expanding agent and an auxiliary expanding agent into a second composition having a polyol as the main component, and then stored in a storage container. The boiling point of the auxiliary expanding agent is lower than that of the main expanding agent, and the auxiliary expanding agent is gaseous at normal temperature. An agent for increasing the storage pressure is filled into the storage container in a pressurized state, or the liquid layer in the storage container (expandable second composition) is sealed by an air layer. The agent for increasing the storage pressure is a gas that has lower solubility and a smaller diffusion coefficient in the second composition than the auxiliary expanding agent.

OZAKI HITOSHI
SHIBAYAMA TAKUTO
ISHITA MITOKO
ONO KOUZI
KUBOTA KOICHI
NISHIKAWA KAZUHIRO
TSUJITA HIROSHI
NAKAZATO MAIKO
UENO TAKAHIRO

PCT/JP2012/005328

February 28, 2013

August 24, 2012

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PANASONIC CORP (JP)
OZAKI HITOSHI
SHIBAYAMA TAKUTO
ISHITA MITOKO
ONO KOUZI
KUBOTA KOICHI
NISHIKAWA KAZUHIRO
TSUJITA HIROSHI
NAKAZATO MAIKO
UENO TAKAHIRO

B29C39/24; B29C39/18; C08G18/00; B29K75/00; C08G101/00

JP2008291060A	2008-12-04
JP2001163947A	2001-06-19
JPH04269510A	1992-09-25
JPH04202243A	1992-07-23

PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Patent business corporation Owner old patent firm (JP)

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