公开(公告)号：JPH1087872A

公开(公告)日：1998-04-07

申请号：JP26124096

申请日：1996-09-09

Applicant: AGENCY IND SCIENCE TECHN ,  KUMAMOTO PREFECTURE

Inventor： SUGATA TAKESHI ,  NAKANE TAKASHI ,  SAKO TAKESHI ,  OTAKE KATSUTO ,  UENO KATSUHIKO ,  SATO SHINJI ,  NAGAOKA SHOJI ,  NAGATA MASANORI ,  NAGAYAMA SANPEI ,  KAMIMURA MAKOTO

IPC: C08J11/10

Abstract: PROBLEM TO BE SOLVED: To enable reinforcing fibers to be separated, recovered, and reused efficiently without damaging the fibers by bringing a fiber-reinforced plastic into contact and reaction with (sub)supercritical water. SOLUTION: After a fiber-reinforced plastic is charged into a reactor 1 and water supplied from a water cylinder 2 to a water tank 3 is charged into the reator 1 through a high-pressure pump 4 so that water occupies 1-50vol.% of the reactor 1, valves 5, 6 are closed and the reactor 1 is hermetically sealed. Then, a heat exchanger 8 and the reactor 1 are heated to 320-500 deg.C with a constant temp. bath 7 to bring water in the reactor 1 into a (sub)supercritical state. The reinforced plastic is brought into contact with the water in a (sub) supercritical state and thus is reacted. The reactor 1 is then returned to normal temp. and the valve 6 is opened to separate and recover a gaseous part contg. hydrocarbons, carbon dioxide, nitrogen, etc., through a trap 9.

公开(公告)号：JPH02142739A

公开(公告)日：1990-05-31

申请号：JP29580188

申请日：1988-11-22

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SAKO TAKESHI ,  SATO SHINJI ,  SUGATA TAKESHI ,  NAKAZAWA NOBUAKI ,  OKUBO TEIJI ,  SUZUKI MORIO ,  WAKABAYASHI KATSUHIKO

IPC: B01J29/12 ,  B01J29/08 ,  B01J29/22 ,  C07B61/00 ,  C07C5/27 ,  C07C9/12 ,  C07C9/16

Abstract: PURPOSE:To industrially and advantageously isomerize a 4-10C n-paraffin into a paraffin having side chains without adding H2 gas into a reaction system by using a solid catalyst in a mixed fluid of the reactant and product in a supercritical state. CONSTITUTION:A 4-10C n-paraffin is introduced into a reactor filled with a solid catalyst supporting Pt on Y type zeolite, etc., and isomerized under conditions of higher reaction temperature and reaction pressure than the critical temperature and pressure of a mixed fluid consisting of the reactant and product in the reaction vessel without adding H2 gas into the reaction system. The mixed fluid of the unreacted reactant and the product emerging from the reactor is then decompressed to take out the paraffin as an isomerized paraffin product having side chains.

公开(公告)号：JPS63216845A

公开(公告)日：1988-09-09

申请号：JP5098487

申请日：1987-03-05

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SAKAKI KEIJI ,  SAKO TAKESHI ,  SATO SHINJI ,  SUGATA TAKESHI ,  SUZUKI OSAMU ,  NAKAZAWA NOBUAKI ,  SHIRATA TOSHIKATSU ,  YOKOCHI TOSHIHIRO

IPC: C07C67/56 ,  C07C69/58 ,  C11B3/10 ,  C11B7/00

Abstract: PURPOSE:To obtain the titled compound inexpensively, in high yield and harmlessly to human body without requiring removal of organic solvent by vacuum distillation, by fractionating gamma-linolenic acid containing natural fats and oils by chromatography using a supercritical fluid as a mobile phase. CONSTITUTION:gamma-Linolenic acid-containing natural fats and oils are fractionated by chromatography using a supercritical fluid as a mobile phase and a gamma- linolenic acid-containing glyceride fraction is collected to give the aimed com pound. A hydrocarbon such as methane or ethane besides carbon dioxide and freon is used as the supercritical fluid. The supercritical condition is >=72.4kg/cm pressure and >=31.0 deg.C temperature in the case of carbon dioxide. A small amount of ethanol, butane, etc., having 40-120 deg.C boiling point is added to the supercritical fluid so that separating performance is improved. The partial collection condition by the supercritical chromatography is preferably 35-60 deg.C temperature and 90-250kg/cm pressure.