SEPARATION OF BROMODICHLOROBENZENE ISOMER

    公开(公告)号:JPH01213243A

    公开(公告)日:1989-08-28

    申请号:JP3825088

    申请日:1988-02-19

    Abstract: PURPOSE:To separate and recover a specific bromodichlorobenzene isomer, especially 1-bromo-3,5-dichlorobenzene from a mixture of bromodichlorobenzene isomers, in high purity and efficiency, by using a zeolite as an adsorbent. CONSTITUTION:A specific bromodichlorobenzene isomer, especially 1-bromo-3,5- dichlorobenzene useful as an intermediate raw material for agricultural chemicals, dyes, pharmaceuticals, etc., is separated from a mixture of bromodichlorobenzene isomers containing 1-bromo-3,5-dichlorobenzene, 1- bromo-2,4-dichlorobenzene, 1-bromo-2,6-dichlorobenzene, 1-bromo-2,5- dichlorobenzene, etc., by using a zeolite (especially a faujasite zeolite containing cations selected from metallic ions of group IA, IB and IIA of the periodic table and proton) as an adsorbent.

    POLYPHENYLENE SULFIDE RESIN COMPOSITION

    公开(公告)号:JPS6465171A

    公开(公告)日:1989-03-10

    申请号:JP22252787

    申请日:1987-09-04

    Abstract: PURPOSE:To obtain the title composition having excellent adhesiveness and moldability, by using polyphenylene sulfide and a monoepoxy compound as its essential constituents. CONSTITUTION:100pts.wt. polyphenylene sulfide resin (A) containing at least 70mol.% repeating units of the formula and if required, treated with an acid or hot water, or washed with an organic solvent to reduce its Na content to 900ppm or lower is mixed with 0.01-40pts.wt. monoepoxy compound (B) having only one epoxy group in the molecule (e.g., biphenyl glycidyl ether) and, if necessary, 400pts.wt. or less, based on A+B, component (C) comprising a fibrous reinforcement (e.g., glass fibers) and/or a particulate reinforcement (e.g., silica or talc). This mixture is melt-compounded through an extruder at a temperature higher than the melting point of component A (e.g., 280-340 deg.C).

    METHOD FOR PRODUCING POLYAMIDE COMPOSITION

    公开(公告)号:JP2002241606A

    公开(公告)日:2002-08-28

    申请号:JP2001041891

    申请日:2001-02-19

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyamide composition by an addition method comprising replacing a part of an iodine compound causing the staining of rollers on the production of polyamide composition synthetic fibers by a bromine compound and adding the iodine compound and a copper compound to the polyamide composition, especially by an addition method capable of solving a problem that many spherical crystals are formed in a process for cooling spun fibers to cause the breakage of the fibers, the deterioration in the strength and elongation of the fibers, and the like. SOLUTION: This method for producing the polyamide composition is characterized by adding and mixing an iodine compound and a copper compound to a polyamide obtained by a liquid phase polymerization in the presence of the bromine compound.

    PRODUCTION OF POLYAMIDE COMPOSITION

    公开(公告)号:JPH06256649A

    公开(公告)日:1994-09-13

    申请号:JP4648493

    申请日:1993-03-08

    Abstract: PURPOSE:To obtain a yarn which has a high quality and is reduced in local unevenness of heat resistance and stability or a film which is markedly reduced in the formation of fisheyes by mixing a pelletized polyamide with an aqueous solution of a copper compound and an aqueous solution of an inorganic halide and drying the pellets. CONSTITUTION:A process for producing a polyamide composition by adding a copper compound (e.g. copper sulfate) and an inorganic halide (e.g. sodium iodide) as a heat resistance improver to a pelletized polyamide (e.g. nylon 6) obtained by polymerizing a diamine with a dicarboxylic acid and/or a lactam, wherein an aqueous solution of the copper compound and an aqueous solution of the inorganic halide are added to the polyamide to form a copper halide on the surfaces of the pellets and the pellets are dried to a water content of 0.1% or below. According to this process, the copper compound does not deposit, and hence a long-term continuous operaiton is possible, the productivity is improved, the process control is facile, and the obtained yarn has no dispersion of quality among single yarns and in the direction of length. The obtained film is markedly reduced in the formation of fisheyes.

    PRODUCTION OF DISTRIBUTED REFRACTIVE INDEX TYPE OPTICAL TRANSMISSION BODY

    公开(公告)号:JPH0486605A

    公开(公告)日:1992-03-19

    申请号:JP19981090

    申请日:1990-07-27

    Abstract: PURPOSE:To obtain the optical transmission body which substantially prevents the phase sepn. of a polymer and has excellent transparency by mixing two kinds of specific monomers, molding the mixture to a fiber shape by preliminary polymn. and polymerizing the monomers while selectively volatilizing the unpolymerized monomers from the surface of this molding. CONSTITUTION:The monomer mixture prepd. by mixing >= 2 kinds of the monomers varying in refractive index, a polymn. initiator and various polymn. compds. is polymerized to form the prepolymer in which the monomers remain. The monomers which are the same in polymerizable functional groups and have >= 20 deg.C difference in the b.p. at 760 mm Hg are used. The monomers are molded to the fiber shape. While the unpolymerized monomers are selectively volatilized from the molding surface, the entire unpolymerized is polymerized. The optical transmission body having the excellent transparency is produced in this way.

    SPECTACLE FRAME
    69.
    发明专利

    公开(公告)号:JPH03293620A

    公开(公告)日:1991-12-25

    申请号:JP9730290

    申请日:1990-04-11

    Abstract: PURPOSE:To obtain the plastic spectacle frame having sufficient rigidity, flexural resistance, impact resistance, and solvent resistance while the spectacle is slim by constituting the frame of a polyphenylene sulfide resin compsn. CONSTITUTION:The spectacle frame is formed of the polyphenylene sulfide resin compsn. An alpha-olefinic polymer is preferably incorporated into this resin compsn. The alpha-olefinic polymer refers to polymers consisting of alpha-olefins, such as ethylene, propylene, butene-1, isobutene, pentene 1, 4-methyl pentene-1 and hexene-1, or the copolymers thereof and further the copolymers formed by copolymerizing these alpha-olefins and other copolymerizable monomers are included therein. The spectacle frame having the excellent mechanical strength, flexural property, impact property, and solvent resistance is obtd. in this way.

    NOVEL THIOL (METH)ACRYLATE AND RESIN THEREOF

    公开(公告)号:JPH0356459A

    公开(公告)日:1991-03-12

    申请号:JP312990

    申请日:1990-01-09

    Abstract: NEW MATERIAL:Compounds of formula I (R1 is H or methyl; m is 1-4), formula II (R2 is R1; n is 0 or 1) and formula III (R3 is R1). USE:Useful for resins and high refractive-index plastic lens. PREPARATION:A divalent mercaptan compound of formula IV synthesized according to the reaction formula is reacted with a (meth)acrylic halide in the presence of an alkali such as a metal hydroxide or a tertiary amine to obtain a compound of formula I. By adding an initiator used in radical polymerization generally, i.e. a peroxide or an azo-based initiator in an amount of 0.001-5 pts. wt. based on 100 pts. wt. compound of formula I and then heating the resultant mixture or applying light thereto, the compound of formula I is polymerized and a resin excellent in transparency is obtained. By adding another monomer except the compound of formula I thereto in the above-mentioned polymerization, a copolymerization, a copolymerization can be carried out.

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