CATALYST FOR UNSATURATED ACID PRODUCTION

    公开(公告)号:KR800000622B1

    公开(公告)日:1980-07-07

    申请号:KR770002413

    申请日:1977-10-18

    Abstract: Metharylic acid (I) was prepd. from methacrolein(II) by oxidn. with mo1. 0 at 200-600≦̸C in the presence of a catalyst contg. an oxide of W,P,U,Mo, and Co, Rn, Cd, Sr. An aq. slurry of MoO3 86.2, 85 % H3Po4 7.7, V2O3 7.5, and NH4 paratungstate 10.8 was refluxed overnight, evapd., and dried overnight at 120≦̸C to prepare a catalyst giving 65.9 % conversion and 45.4 % selectivity in the oxidn. of II to I at 355≦̸C and contact time 4.8s.

    PROCESS FOR THE POLYMERIZATION OF ALPHA-OLEFINS

    公开(公告)号:KR790000774B1

    公开(公告)日:1979-06-30

    申请号:KR750000066

    申请日:1975-05-07

    Inventor: ROGAN J B

    Abstract: Highly cryst. polypropylene or its copolymer with ethylene or C4-8α-olefins, were prepd. in the presence of catalyst contg. an organoaluminum [trialkylaluminum(I), I-alkylaluminum dichloride or-dibromide mixt., I-dialkylaluminum chloride or-bromide mixt. treated with 10 mole% H2S, TiCl3, and a trihydrocarbylphosphite or a sterically hindered tertiary amine or its oxide.

    METHOD OF MANUFACTURING OF DINITRILES FROM THIO DINITRILES

    公开(公告)号:KR790000725B1

    公开(公告)日:1979-06-28

    申请号:KR750002495

    申请日:1975-11-14

    Inventor: CALLAHAN J L

    Abstract: Sulfur was eliminated from thiodinitriles, e.g., thiodipropionitrile, to give the resp. dinitrile, e.g., adiponitrile, by heating the thiodinitrile at 200-700≦̸C; the elimination could be strictly a thermal reaction or a reaction conducted in the presence of other gases, liqs. pr solids. Optimum conditions (from 105 examples) were 555≦̸C with bonded Cu flake present; 91.6% adiponitrile was obtained with 62.1% conversion.

    SEPARATING PROCESS OIF UNSATURATED HYDRO CARBONS

    公开(公告)号:KR790000278B1

    公开(公告)日:1979-04-16

    申请号:KR730001456

    申请日:1973-08-31

    Inventor: GILKES A G

    Abstract: Unsatd. aliphatic hydrocarbons were sepd. from gaseous C2-8 hydrocarbon mixts. by contacting the gaseous mixts. with a liq. barrier consisting of complex-forming metal ions in aq. soln. and supported with water insoluble semipermeable membrane which is substantially solid and impermeable to liq. barrier. The partial pressure of gas-fed cell to evolve the unsatd. hydrocarbon from aq. barrier was higher than that of the other.

    PROCESS FOR OXIDATION OF OLEFINS
    58.
    发明公开

    公开(公告)号:KR830000022A

    公开(公告)日:1983-03-25

    申请号:KR780002329

    申请日:1978-07-28

    Abstract: Unsaturated aldehydes and acids was prepared by the oxidation of olefins at 200-400≦̸C in the presence of catalyst, K0.1Ni2.5Co4.5Mo12Ox (X = the no. required to satisfy stoichiometry) and a promoter Fe2LZ0.5 (L = Cr, Sb, Ce, Pb, Ge, S Sn), or Mg7.5Fe3Z0.5 (Z = p,w). Using Fe2CrW0.5 as the promoter at 350≦̸C, conversion yield of acrolein and acrylic acid was 80.4 % and 77 %, resp.

    METHOD FOR IMPROVING COLOR AND IMPACT STRENGTH OF NITRILE POLYMERS

    公开(公告)号:KR820002027B1

    公开(公告)日:1982-10-25

    申请号:KR790001899

    申请日:1979-06-11

    Abstract: The color and impact strength of nitrile polymers, prepared by polymn. of an olefinically unsatd. nitrile with a monovinyl monomer in the presence of a rubber, were improved by heating the polymer to a plastic state in the absence of O and in presence of an inert gas. Thus, an acrylonitrile-rubber-vinyl compd. latex, coagulated and formed into strands was pelletized by screw extrusion in the presence of CO2. The product had Izod impact strength 2.57kg/cm2, yellowness index 28.

    OXYDEHYDROGENATION PROCESS FOR ALKYLAROMATICS

    公开(公告)号:KR820000922B1

    公开(公告)日:1982-05-26

    申请号:KR780001318

    申请日:1978-05-01

    Abstract: Catalysts for the title dehydrogenation had the formula AaMbMlcM"dBePyOx, where A = alkali metal and/or Tl; M = one or more of Ni, Co, Cu, Mn, Mg, An, Ca, Nb, Ta, Sn, Ba; M' = one or more of Fe, Cr, U, Th, V, Ti, La, rare earth; M" = one or more of An, B, Pb, Ge, Al, W, Mo; B = one or more of Bi, Te, As, Sb, Cd; a-y varied over a range, mostly from 0-20, were prepd. Data for 26 catalysts were given in terms of dehydrogenation of alkylaromatic compds. to alkenylaromatic compds.

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