PRODUCTION OF OIL-LIKE MATERIAL BY DECOMPOSITION OF SYNTHETIC POLYMER

    公开(公告)号:JPH09221683A

    公开(公告)日:1997-08-26

    申请号:JP5104796

    申请日:1996-02-14

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an oily material useful as a fuel oil, a raw material oil, etc., capable of readily of readily decomposing even if chloride polymers are mixed therein in a short time from a plastic waste, etc., which is seriously watched as an environmental problem by decomposing a synthetic polymer at a specific temperature in the presence of a specific organic nitrogen compound. SOLUTION: (A) A synthetic polymer such as polyethylene, polypropylene or polystyrene is decomposed at 300-600 deg.C in the presence of (B) an organic nitrogen compound capable of producing a free radical under decomposition conditions, e.g. a compound of formula I [Ar is an aromatic group; R is H or Ar; (n) is 1-5], a compound of formula II (Ar is monovalent or divalent aromatic group) or a compound of formula III [Ar is a divalent aromatic group; (n) is 1-20] in an amount of 0.01-10wt.% based on the component A to provide the objective oil-like material.

    PROPYLENE POLYMER
    62.
    发明专利

    公开(公告)号:JPH07145212A

    公开(公告)日:1995-06-06

    申请号:JP29207193

    申请日:1993-11-22

    Abstract: PURPOSE:To obtain a propylene polymer having a high triad-tacticity, specific ratios of stereo-irregular units and a specific value of intrinsic viscosity, excellent in rigidity, heat resistance, surface hardness, glossiness, transparency and impact resisting strength and suitable for an industrial part, etc. CONSTITUTION:The objective polymer has a triad-tacticity of a propylene-unit chain consisting of a head-to-tail bond, measured by CNMR of >=90.0%, the content of a stereo-irregular propylene unit of 2,1-insertion of >=0.7% and that of 1,3-insertion of C-NMR and an intrinsic viscosity measured in decalin at 135 deg.C of 0.1-12dl/g. Further, the polymer has regular structures, preferably, of the formulas.

    DIALKOXYPHENYLENEDIAMINE DERIVATIVE

    公开(公告)号:JPH05331117A

    公开(公告)日:1993-12-14

    申请号:JP27628992

    申请日:1992-10-14

    Abstract: PURPOSE:To obtain a new dialkoxyphenylenediamine derivative, capable of providing color development of a practically sufficient intensity just after color developing operation and a color developed part having strong absorption within a wide range of a visible to a near infrared regions, and having high stability. CONSTITUTION:The dialkoxyphenylenediamine derivative of formula I (R to.R are l-4C alkyl; R is H or l-4C alkyl). This compound can readily be synthesized by subjecting a dihydric phenol of formula II and p-phenylenediamine or alkoxyanilines of formula IV (R is alkyl) and hydroquinone to dehydrating condensation and then alkylating the resultant compound of formula III or IV. Furthermore, since this compound has the effects and stability such as light and moisture resistance, it is useful for reading information with apparatuses at all the wavelengths such as bar code readers capable of carrying out the reading in a near infrared region and utilizing semiconductor laser or apparatuses performing the reading in a visible region.

    PRODUCTION OF POLYALKYLENE GLYCOL POLYCARBONATE

    公开(公告)号:JPH048725A

    公开(公告)日:1992-01-13

    申请号:JP11221190

    申请日:1990-04-27

    Abstract: PURPOSE:To obtain a polyalkylene glycol polycarbonate having a specific structural formula at a low cost by heating a specific polyalkylene glycol and a specified carbonate compound in the presence of a basic catalyst and then heating the resultant product under reduced pressure. CONSTITUTION:A carbonate compound expressed by formula I [R is group expressed by formula II ((m) is 1-10; (a) is 1-100)] is made to react with a carbonate compound expressed by formula III (R is methyl, etc.) in the presence or absence of a monoalcohol expressed by formula IV (R is 2-20C alkyl, etc.; (n) is 1-10; (b) is 1-100) in the presence of a basic catalyst at 0.6-5 molar ratio of formula II/(2X formula I + formula III) under ordinary or higher pressure by heating while removing an alcohol expressed by formula V until the rate of reaction attains >=95%. After removing the unreacted polycarbonate compound, thermal reaction is carried out under reduced pressure to neutralize the basic catalyst. Thereby, the objective polyalkylene glycol polycarbonate expressed by formula VI (R and R are R and/or R ; (x) is 0.5-10) is obtained.

    PURIFICATION OF AROMATIC POLYCARBONATE

    公开(公告)号:JPH02251525A

    公开(公告)日:1990-10-09

    申请号:JP7439289

    申请日:1989-03-27

    Abstract: PURPOSE:To obtain a polycarbonate excellent in hue in high efficiency through a simple operation by treating a polycarbonate produced by ester interchange process in a liquid phase with hydrogen, in the presence of a hydrogenation catalyst. CONSTITUTION:The objective purification can be accomplished by treating in a liquid phase (e.g. in dimethyl carbonate as solvent) with hydrogen, in the presence of a hydrogenation catalyst (e.g. metal such as Fe, Co or Ni, its oxide), a polycarbonate produced by ester interchange process from a diol compound (e.g. bisphenol A) and a carbonate (e.g. dimethyl carbonate).

    PRODUCTION OF CARBONYLIMIDAZOLE DERIVATIVE

    公开(公告)号:JPH02207073A

    公开(公告)日:1990-08-16

    申请号:JP2718889

    申请日:1989-02-06

    Abstract: PURPOSE:To obtain the title compound useful for production of isocyanates and for carbonylation reaction instead of phosgene safely without using phosgene by reacting an imidazole derivative containing H at the N-position with an aromatic carbonate as raw materials. CONSTITUTION:An imidazole derivative containing H at the N-position such as imidazole shown by formula I (R -R are R, halogen, alkyl or aryl or R and R are bonded to form a ring) is reacted with an aromatic carbonate such as diphenyl carbonate shown by formula II (Ar and Ar are aryl) in the molar ratio of usually (100:1)-(0.1:1) optionally by using a solvent and a catalyst at 0-250 deg.C under 0.01mmHg-10kg/cm pressure for 0.1-40 hours to form the aimed compound shown by formula III and an aryloxycarbonylimidazole derivative shown by formula IV (Ar =Ar or Ar ] useful as a raw material for isocyanate compounds and the aimed compound shown by formula III is isolated by separation method such as column chromatography.

Patent Agency Ranking