HIGH ACTIVITY CATALYST FOR THE POLYMERIZATION OF -OLEFINS

    公开(公告)号:KR840000088B1

    公开(公告)日:1984-02-10

    申请号:KR790004686

    申请日:1979-12-29

    Abstract: A highly active catalyst for polymerization of α-olefins is composed of an organic metal promotor, at least one of IVb, Vb, or VIb metal compd. (I), 2+ metal salt of phosphoric ester (II) contg. at least one of phosphoric ester gp. combined with metals through O or S, and hydrocarbon non-soluble solid composition produced by reaction of at least on of alkyl aluminum halide. The atomic ratio of metals of (II) to (I) is about 0.05:1˜10:1 and an effective amt. of alkyl aluminum halide is used to halogenize metals of (I) and (II)

    PROCESS FOR PREPARATION OF ACRYLONITRILE AND METACRYLONITRLE

    公开(公告)号:KR820000961B1

    公开(公告)日:1982-05-31

    申请号:KR780002328

    申请日:1978-07-28

    Abstract: Acrylonitrile and methacrylonitrile is prepd. by ammoxidation of propylene and isobutyrene resp., using improved catalyst which can be represents as JaQ6ZcFedDeMo12Ox, where J is an alkali metal, Tl and Ag, Q is Co, Ni, Zn, Cd, Be, Mg, Ca, Sr, Ba and Ra, Z represents Ge+Sb, Cu+W, Cu+Sn, Ce+W, Pr+Mn, Sn+Mn, Mn+W, W+Sb, Cr+Sn, W+Sn, Ge+Sn, Sb+Sn, W+P, Sb+P, Cr+Cu, Mn+Cu, Sb+Cu and Mn+P, D is Bi or Te, a = 0.03-0.05, b = 4-10, C = 0.5-7, d = 0.5-5, e - 0.5-5, and x is as necessary for balance. For example, MnWo.5 (Ko.1Ni2.5Co4.5 Fe2BiMo12Ox) supported on 20% SiO2 gave acrylonitrile with 86.4% selectivity and 68.5% conversion per pass at 420≦̸C.

    VAPORPHASE POLYMERIZATION WITH TEMPORARILY INACTIVE TITANIUM CATALYST

    公开(公告)号:KR810001876B1

    公开(公告)日:1981-11-19

    申请号:KR780003584

    申请日:1978-11-28

    Abstract: Olefins were polymd. by conveying an inactive high-yield Ti catalyst component to a vapor-phase polymn. reactor with a liq. comprising recycled quench liq., reactivating the Ti catalyst component inside the reactor with a metal alkyl reducing agent, and polymg. the olefin under gas-phase polymn. conditions with the reactivated catalyst to form a polyolefin having a low level of catalyst residue.

    TECHNIQUE FOR FORMING MULTI-COMPONENT OXIDE COMPLEX CATALYST

    公开(公告)号:KR810000452B1

    公开(公告)日:1981-05-02

    申请号:KR780002433

    申请日:1978-08-09

    Abstract: Catalyst-prepg. technique is applicable to a wide different types of catalysts, the compns. of which are generally well-known. Such catalysts can be described by following formula(I; M = Bi, Te, Sb, Sn, Cu; N = Mo, W; A - alkali, Ti, Sm; C = Ni, Co, Mn, Mg; D = Fe, Cr, Ce, V; E = P, As, B, Sb; F = rare earth metal, Ti, Zr, Re; a = 0-4; b = 0-20; c = 0.01-20; d = 0-4; e = 0-8; f = 8-16; m = 0.01-10; n = 0.1-30).

    POLYMERIZATION OF OLEFINIC NITRILES AND DIENE RUBBERS

    公开(公告)号:KR810000395B1

    公开(公告)日:1981-04-27

    申请号:KR770000255

    申请日:1977-02-08

    Inventor: AZIZ W S LI G BALL L

    Abstract: An impact-resistant copolymer(I) having low gas permeability and high softening temp. is manufd. by grafting a nitrile rubber latex was grafted with acrylonitrile 70, indene 10, and isobutene 20g to give I having 264 psi heat distortion temp. 79≦̸C and notched Izod impact strength 7.3 ft-1b/in. notch which gave a film having 90% relative humidity water vapor transmission rate 3.5g-mil/100 in. 2/24hr/atm and O transmission rate 2.0 cm3-mil/100 in.2/24 hr/atm.

    COMPOSITION OF OLEFIN NITROL AND DIEN RUBBER POLYMER RESIN

    公开(公告)号:KR800001071B1

    公开(公告)日:1980-10-04

    申请号:KR750002604

    申请日:1975-11-28

    Inventor: KAPEE G HENSLEY L LEE G

    Abstract: Polymeric compositions having good impact resistance, low permebility to gases, and high-softening temp. which are composed of a conjugated diene monomer, such as butadiene, an olefinically unsaturated nitrile, such as acrylonitrile, an ester of an olefinically unsaturated acid, such as methyl acrylate, and indene are described.

    A METHOD FOR SEPARATING ALIPHATICALLY-UNSATURATED HYDROCARBON FROM GASEOUS MIXTURES

    公开(公告)号:KR800000427B1

    公开(公告)日:1980-05-26

    申请号:KR730001523

    申请日:1973-09-13

    Abstract: A gaseous hydrocarbon mixt. was passed through a liq. barrier consisting of complex-forming metal ions in aq. soln., supported in a semipermeable membrane. to give highly selective sepn. of aliph. unsaturated hydrocarbons. Thus, a mixt. contg. ethylene 41.0, methane 22.3, and C2H6 36.7% had C2H4 content 99.948 % ater permeation at 0.471 ml/cm2 min through a cellulose acetate filter, saturated in 1 mole aq. silver nitrate solution and sandwiched between 2 silicone polycarbonate films.

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