POLYMER THERMALLY REVERSIBLE BETWEEN HYDROPHILIC AND HYDROPHOBIC STATE AND PRODUCTION THEREOF

    公开(公告)号:JPS62243609A

    公开(公告)日:1987-10-24

    申请号:JP8755086

    申请日:1986-04-16

    Abstract: PURPOSE:To produce the titled polymer having thermal reversibility to become hydrophobic at high temperature and reversibly convertible between a water-soluble state at low temperature and water-insoluble state at high temperature, in high efficiency, by the radical polymerization of N-methyl-N-n- propylacrylamide. CONSTITUTION:The objective polymer of formula II is produced by the radical polymerization of N-methyl-N-n-propylacrylamide of formula I usually in the form of a 1-80wt% solution under radiation of actinic ray, heating in the presence of radical polymerization initiator or radiation of light in the presence of a photo-sensitizer, etc. USE:Light-shielding material for greenhouse or chemical laboratory, etc., temperature sensor, toys, interior goods, mechanochemical element material, etc.

    NOVEL VINYL COMPOUND
    52.
    发明专利

    公开(公告)号:JPS62242655A

    公开(公告)日:1987-10-23

    申请号:JP8755286

    申请日:1986-04-16

    Abstract: NEW MATERIAL:N-Methyl-N-n-propylacrylamide shown by the formula. USE:Useful as a raw material monomer for hydrophilic-hydrophobic heat reversible high polymer compound usable for glare protecting material, temperature sensor, adsorbent, toy, interior, printing agent, display, separating membrane, mechano-chemical element material, etc. PREPARATION:Acrylic acid chloride is reacted with methyl-n-propylamine and triethylamine in a solvent such as benzene at 0-10 deg.C to give a vinyl compound shown by the formula.

    NEW SEPARATING MEMBRANE
    53.
    发明专利

    公开(公告)号:JPS62129107A

    公开(公告)日:1987-06-11

    申请号:JP26995385

    申请日:1985-11-29

    Abstract: PURPOSE:To prepare a water selective and permeable separating membrane having such practical performances as superb separability, mechanical strength of membrane, etc. by utilizing photo-crosslinked photosensitive polyvinyl alcohol derivative to apply the porous high-molecular membrane. CONSTITUTION:The water solution of water soluble photosensitive resin such as polyvinyl alcohol or partial saponifiable vinyl acetate, etc. shown in the formula is applied on the porous high-molecular membrane such as cellulose acetate porous membrane, exposed to the interior light and the like after air-drying, sensitized and crosslinked with water soluble photosensitive resin to render the said membrane insoluble. By utilizing the composite membrane thus prepared, pervaporation is carried out to separate the water-ethanol mixing solution and the like.

    NOVEL VINYL COMPOUND
    55.
    发明专利

    公开(公告)号:JPS61225157A

    公开(公告)日:1986-10-06

    申请号:JP6773485

    申请日:1985-03-29

    Abstract: NEW MATERIAL:A compound expressed by formula I (R1 represents H or methyl; R2 represents lower alkyl). EXAMPLE:N-Methoxypropylacrylamide. USE:Useful as a raw material monomer for hydrophilic-hydrophobic thermoreversible high polymers. PREPARATION:For example, acryloyl chloride or methacryloyl chloride expressed by formula II is reacted with a 3-alkoxypropylamine expressed by formula III and triethylamine expressed by formula IV in a solvent preferably at 0-10 deg.C to obtain the compound expressed by formula I. A polymer prepared from the compound expressed by formula I is a thermoreversible derivative, which dissolves in water at low temperatures, reversibly becomes insoluble in water at high temperatures and is useable for a light shield, thermosensor, adsorbent, toy, etc.

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