Standard Oil Company (indiana)

Amoco Corporation

The Standard Oil Company

James L Jezl

Edwin F Peters

Michael J Spangler

Glenn O Michaels

Michael A Stasi

Robert F Blanks

Imre Puskas

Mark L Winzenburg

Robert D Hall

John W Shepard

Abraham Daniel Schneider

Habet M Khelghatian

David E Boone

Louise D Hague

A reactor apparatus and method useful in regulating temperature in a heterogeneous reaction system is provided. The apparatus includes an elongated tube reactor packed with a bed of solid particles through which a reactant fluid phase is passed. A plurality of heat transfer medium passage tubes are disposed in the bed of solid particles with adjacent tubes spaced relative to each other about the longitudinal axis of the reactor and with the tubes being substantially transverse to reactant flow through the reactor. The temperature in the system may, in turn, be regulated by effecting flow of a heat transfer medium through the passage tubes.

Temperature regulating reactor apparatus and method

Catalysts containing a reducible compound on a silica-containing support are provided for the conversion of a lower molecular weight alkane to more valuable, higher molecular weight hydrocarbons.

Catalysts for conversion of a lower alkane

The catalyzed oxidative coupling of a lower molecular weight alkane to more valuable, higher molecular weight hydrocarbons and oxidative coupling catalysts for use therein are disclosed.

Conversion of a lower alkane

A method for converting a lower molecular weight alkane to synthesis gas to higher molecular weight materials in the presence of a Fischer-Tropsch catalyst is disclosed.

The catalyzed oxidative coupling of a lower molecular weight alkane to higher molecular weight hydrocarbons which are then oligomerized to form aromatic hydrocarbons is disclosed.

The catalyzed oxidative coupling of a lower molecular weight alkane to move valuable, higher molecular weight hydrocarbons is disclosed.

The catalyzed oxidative coupling of a lower molecular weight alkane to higher molecular weight hydrocarbons which are then oxidatively dehydrogenated to form unsaturated aliphatic hydrocarbons is disclosed.

A method for converting a lower molecular weight alkane to synthesis gas to higher molecular weight materials comprising (a) passing a reaction mixture comprising the alkane and air at a pressure of from about 1 to about 50 pounds per square inch gauge through an elongated first reactor packed with a bed of refractory particles having three zones: (1) an upstream zone for heating the mixture, (2) a middle zone wherein alkane and oxygen react exothermically to produce hot CO, H.sub.2, and N.sub.2 and (3) a downstream zone for cooling the hot CO, H.sub.2, and N.sub.2 ; and (b) passing cooled CO, H.sub.2, and N.sub.2 to a reactor packed with Fischer-Tropsch catalyst to form higher molecular weight materials.

1. A process for producing a block polymer which comprises contacting, under polymerizing conditions, propylene with a catalyst comprising a dispersion of solid particles of a metal subhalide wherein said metal is selected from the group consisting of the metals of Groups IVa, Va and VIa of the Periodic Table according to Mendeleeff and an activator therefor selected from the group consisting of metal alkyls, metal hydrides, metal borohydrides, aryl metal halides, and alkyl metal halides wherein said metal is selected from the group consisting of aluminum, zinc, beryllium, chromium, magnesium, lithium, sodium, potassium, and lead, in an inert hydrocarbon liquid reaction medium, whereby said propylene is polymerized to form a polymeric block, then contacting a second monomeric composition selected from the group consisting of ethylene and mixtures thereof with propylene, with said catalyst system under polymerizing conditions whereby said second monomeric composition polymerizes in the presence of the previously formed polymeric block as a linear extension thereto, the polymerization of propylene being performed in the presence of sufficient hydrogen to give a melt index suitable for melt processing of the resulting block polymer and the polymerization of said second monomeric composition being performed in the substantial absence of added hydrogen, terminating the polymerization reaction and separating from the reaction mixture a solid, substantially crystalline block polymer which is predominantly insoluble in said reaction mixture at polymerization temperature and comprises molecules consisting essentially of a single homopolymer block linearly connected to a single polymer block selected from the group consisting of an interpolymer block and a homopolymer block derived from a monomer different from that of the first-mentioned homopolymer block, said block polymer consisting essentially of 99.8 to 40 weight percent of propylene and 0.2 to 60 weight percent of ethylene.

Crystalline olefin block polymers

High activity catalyst component for olefin polymerization comprises reaction product of Group IVB-VB metal-containing component with product prepared by reaction of components comprising magnesium alcoholate and halocarboxylic acid, provided that when such components contain less than an effective amount of halogen, reaction product is reacted with halogenating agent. Magnesium alcoholate-halocarboxylic acid reaction product can be obtained in hydrocarbon-soluble or -insoluble form such that catalyst component preparation involves a liquid-liquid or liquid-solid system as desired. Catalysts comprising the above-described component and organometallic promoter are sufficiently active to eliminate need for removal of catalyst residues from polyolefins produced in the presence thereof.

Olefin polymerization catalyst

Substantially crystalline block polymers comprising a homo-polymer block of an alpha-olefin having 2-8 carbon atoms and attached thereto a copolymer block of at least 2 alpha-olefins containing 2-2 carbon atoms, one of which may be the same or different from the alpha-olefin from which the homo-polymer block is prepared. Such block polymers are prepared in the presence of a stereospecific catalyst system by contacting the aforesaid alpha-olefin with said catalyst system to form the solid, substantially crystalline homo-polymer block, and then contacting the same catalyst system with the aforesaid mixture of said alpha-olefins. In an embodiment between about 55 and 95% of the polymerization time is expended in preparing the homo-polymer block. When preparing the copolymer block, one uses at least as much of the least reactive alpha-olefin, or more of the same, as one uses of the more reactive monomers.

Crystalline olefin block polymers and their preparation

Thermoplastic polymer particles are converted to pellets by depositing the powder onto a moving platform, melting the particles and transferring the melted polymer to a pelletizer.

Method for converting polymer powder to pellets

Apparatus and process is herein disclosed by which a polymerizable monomer or mixture thereof can be economically and efficiently converted to polymeric substances with a high yield catalyst and, optionally, co-catalyst by a vapor phase, essentially isobaric, polymerization process using a horizontal, stirred-bed, quench-cooled, essentially total reactor off-gas recycle reactor.

Horizontal reactor for the vapor phase polymerization of monomers

Apparatus for the vapor phase polymerization of at least one polymerizable monomer comprising:

A process for drying polymer slurry produced in slurry or bulk phase polymerization comprising removing, in a gas stream which contains polymerizable monomer, easily vaporizable liquid components from a stirred drying zone containing a large, in comparison with the volume of slurry from said polymerization added to said zone, amount of solid polymer particulate to form substantially dry polymer particulate using in essential part polymerization heat generated in said zone by carrying out therein a fraction of the overall amount of polymerization. The resulting polymer can be finished conventionally or by transferring said particulate to a melting zone in which an easily transferable polymer melt is formed, said melting accomplished in substantial part using polymerization heat generated in said melting zone by a fraction of the overall amount of polymerization.

Growing community of inventors

St. Charles, IL, United States of America

James L Jezl