Phillips Petroleum Company

Other

Kenneth L Anderson

Donald G Kuper

M Bruce Welch

Fernando C Vidaurri

Robert W Bohmer

A device (10) for mounting a radar antenna to a support structure such as a mast (M) includes a generally U-shaped frame (12). A proximal end (14) of the frame is adapted for securement to the support structure while the frame extends generally horizontally outward from the support structure and terminates at a closed distal end (16). A radar antenna mounting platform assembly (20) has a longitudinal axis (L) and is pivotally connected between the support structure and the distal end of the frame at a position within the U-shaped frame. The device includes means (60) for selectively pivoting the radar platform bi-directionally about its longitudinal axis. The platform is preferably pivotable at least 20.degree. in either direction from horizontal to define an overall arc of at least 40.degree.. The pivoting means is remotely operable, e.g., from the deck or cockpit of the boat, and maintains the antenna mounting platform at a select angular orientation and prevents angular movement of the platform in response to movement of the support structure.

Mast mounting device for radar

A process for the polymerization of olefins in the presence of hydrogen comprising contacting the olefin, a cyclopentadienyl compound and a catalyst comprising a transition metal compound at polymerization conditions.

Mono-1-olefin polymerization in the presence of hydrogen and a

A method for dehydrating pre-polymerization mixtures in the preparation of poly(arylene sulfide) in which a reaction mixture of a sulfur source and an organic amide are contacted at an essentially constant pressure within a range of about 4 psig to about 40 psig and a first temperature in a range of about 300.degree. F. to 400.degree. F. to form a complex of the reactants with the mixture subsequently maintained at essentially constant pressure while elevating the temperature to a second temperature at which, at the chosen pressure, essentially all water is removed from the mixture. Other compounds including bases, alkali metal carboxylates, alkali metal carbonates, lithium halides, and lithium borate can be present in the reaction mixture. Preferably the sulfur source is sodium sulfide and the organic amide is N-methylpyrrolidone.

Controlled, elevated pressure dehydration of poly(arylene sulfide)

A contacting apparatus that is a vertically elongated, cylindrical shell having closed ends and separated by horizontal baffle plates into a multiplicity of discrete chambers with access from one chamber to another through concentric circular holes, axially centered in the baffles with a continuously rotatable shaft extending concentric with the baffles within the shell with at least one agitator means attached to the shaft positioned in each chamber and with the shaft in the circular openings providing annular openings in the baffles such the the ratio of backflow rate to feed rate through the openings is less than 1.5. A method for continuously producing arylene sulfide polymer in which reactants suitable for producing poly(arylene sulfide) are introduced into at least a first chamber of the contacting vessel described above thereby forming a reaction mixture which is passed through the chambers of the contactor while maintaining each chamber within conditions for producing arylene sulfide polymer and recovering arylene sulfide polymer from a chamber removed from the chamber into which the initial reactants are introduced.

Multistage, agitated contactor and its use in continuous production of

Continuous production of arylene sulfide polymer is provided in a series of two or more reactors. A compound serving as a sulfur source is contacted in an organic amide with a dihalo aromatic compound and, optionally, at least one polymerization modifying compound to produce arylene sulfide polymer. The reaction mixture boils in each of a series of reaction zones to partially concentrate the mixture by removal of water and diluent and to remove polymerization heat. The degree of removal of water and organic amide is regulated to control the pressure in each boiling reactor so that polymer slurry is induced to flow to each subsequent reaction zone without pumping. Preferably an ascending reactor temperature profile is employed.

Continuous reaction for preparation of arylene sulfide polymer

A method is provided for producing a reaction mixture comprising arylene sulfide polymer that can be subjected to distillation and extraction with water and readily filtered to recover the arylene sulfide polymer. The method entails preparing a composition of at least one alkali metal bisulfide and at least one organic amide, then admixing at least one alkali metal hydroxide into this composition and introducing p-dihalobenzene into the mixture thus produced, then subjecting the mixture to polymerization conditions for a time sufficient to form an arylene sulfide polymer.

Growing community of inventors

Bartlesville, OK, United States of America

Kenneth L Anderson