Title:
METHOD AND APPARATUS FOR VOLUME REDUCTION AND RECOVERY OF STYROFOAM
Document Type and Number:
WIPO Patent Application WO/2007/052366
Kind Code:
A1
Abstract:
To dissolve styrofoam in a safe and high-boiling solvent and obtain styrol at a
low temperature, the styrofoam is dissolved in herb oils, glycols or dibasic acids
and water or an alcohol is added thereto to precipitate a gel. Then the gel is pressed
and the liquid is squeezed out therefrom to give a styrol gel. Next, the styol gel
is dissolved again in a halogenated hydrocarbon, water or an alcohol is added,
and the thus obtained styrol gel is heated under elevated pressure to thereby
squeeze out the liquid remaining therein. After heating the gel, styrol is obtained.
Inventors:
UMEMOTO MASAO (JP)
Application Number:
PCT/JP2005/020756
Publication Date:
May 10, 2007
Filing Date:
November 04, 2005
Export Citation:
Assignee:
UMEMOTO MASAO (JP)
International Classes:
C08J11/06; C08J11/02
Foreign References:
| JPS59221341A | 1984-12-12 | |||
| JPS59115811A | 1984-07-04 | |||
| JPS61185540A | 1986-08-19 | |||
| JPH10279727A | 1998-10-20 | |||
| JP2001220461A | 2001-08-14 | |||
| JPH07179651A | 1995-07-18 | |||
| JP2001172423A | 2001-06-26 | |||
| JP2000248109A | 2000-09-12 | |||
| JPH07214028A | 1995-08-15 | |||
| JP2001002828A | 2001-01-09 | |||
| JPH09157435A | 1997-06-17 |
Download PDF: