Phillips Petroleum Company

Other

Senatore, Guy

Sherk, Fred T.

Nesheiwat, Afif M.

Scoggins, Lacey E.

Hoover, Kenneth C.

Shang, Wei-teh W.

Afif M Nesheiwat

Fred T Sherk

Guy Senatore

Jon F Geibel

Lacey E Scoggins

Kenneth C Hoover

Rex L Bobsein

Earl Clark, Jr

James W Cleary

Melvin D Herd

Wei-Teh W Shang

Joseph G Ceurvorst

Kenneth D Goetz

Roy E Reger

Wei-Tech W Shang

John E Geibel

John F Geibel

Wei-Teh Wade Shang

A poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resin having improved handling characteristics is prepared by a process comprising preparing in a first enclosed vessel a slurry comprising a solid poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resin and a liquid polar organic compound, and optionally water; then substantially liquifying the resin to form a mixture comprising substantially liquified resin and polar organic compound; then flashing the mixture into a second vessel having a pressure lower than the first vessel, thereby removing a portion of the polar organic compound and solidifying the resin. When the slurry further comprises water, the invention method optionally includes a venting step prior to the substantial liquification of the resin and/or a concentration step after the substantial liquification of the resin.

Recovery of poly(arylene sulfide ketone) and poly(arylene sulfide

In one embodiment, a process is provided for treating virgin arylene sulfide resins, wherein a heated polymer slurry, comprising a virgin arylene sulfide resin and water, is contacted by a buffer solution having a pH less than about 9.35 but greater than that necessary to result in at least a partial curing of the virgin arylene sulfide resin. In a further embodiment, a process is provided for treating a virgin arylene sulfide resin, wherein a virgin arylene sulfide resin is slurried in a buffer solution having a pH less than about 9.35 but greater than that necessary to result in at least a partial curing of the virgin arylene sulfide resin. The treating process of this invention is conducted at an elevated temperature, below the melting point of the virgin arylene sulfide resin, while in the substantial absence of a gaseous oxidizing atmosphere. The treated arylene sulfide resins are recovered from the polymer slurry in a manner which does not result in at least a partial curing of the treated resin.

Acid wash of polyarylene sulfides

A process for producing an easily recoverable poly(arylene sulfide) polymer having a melt flow of less than 130 g/10 min., which processes comprises:

Producing high molecular weight poly(arylene sulfide) polymers by adding

According to this invention, improved results in terms of molecular weight and percent yield of aromatic sulfide/sulfone polymers are achieved by the employment of a low level modifying agent within a specific range in the polymerization reaction mixture. The modifying agent employed is a salt of an amino carboxylic acid. The salt can be employed as an already existing salt of an amino carboxylic acid or can be formed in situ by employing either an amino carboxylic acid and a base; or a lactam and a base.

Aromatic sulfide/sulfone polymer production

A process is provided for preparing more granular (i.e., higher bulk density) particulate poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resins having associated therewith improved processability and thermal stability, without generating pressures significantly greater than those generated during polymerization reactions of particulate poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resins.

Production and recovery of poly(arylene sulfide ketone) and poly(arylene

In a first embodiment, arylene sulfide resins are provided by contacting, in a polymerization mixture, during a polymerization process, reactants comprising: an alkali metal sulfide, an organic amide, an alkali metal carboxylate, water and a monomer source which comprises at least one dihaloaromatic compound. The amount of alkali metal carboxylate present during the polymerization process ranges from about 0.01 to about 0.03 mole per each mole of sulfur present in the resulting arylene sulfide resin. The total amount of water present during the polymerization process ranges from about 1.02 to about 2.1 moles per each mole of sulfur present in the resulting arylene sulfide resin. In a second embodiment, arylene sulfide resins are provided by contacting, in a polymerization mixture, during a polymerization process, reactants comprising: an alkali metal sulfide, an organic amide, an alkali metal carboxylate, water and a monomer source which comprises a mixture of at least one dihaloaromatic compound and at least one polyhaloaromatic compound having more than two halogen substituents per molecule. The ranges of the amount of alkali metal carboxylate present during the polymerization process and the total amount of water present during the polymerization process are identical to those amounts disclosed in the first embodiment. The amount of polyhaloaromatic compound initially present ranges from about 0.0001 to about 0.01 mole per each mole of dihaloaromatic compound present prior to the initiation of the polymerization process.

Higher molecular weight arylene sulfide resin and process for its

In one embodiment, the inventive process comprises: (a) preparing a first slurry comprising a first particulate PAS resin and a polar organic compound, (b) heating the first slurry to a temperature in the range of about 20.degree. C. (68.degree. F.) and about 40.degree. C. (104.degree. F.) below the liquid-to-solid phase transitional temperature of the first particulate resin, and (c) rapidly cooling the first slurry to below about 50.degree. C. (122.degree. F.) below the liquid-to-solid phase transitional temperature of the first particulate resin in the polar organic compound to form a second slurry, comprising the polar organic compound and a polymeric mixture comprising a novel particulate high molecular weight PAS resin and a minor amount of a particulate low molecular weight PAS resin. In another embodiment, the invention process comprises: (a) preparing a liquid mixture comprising a first particulate PAS resin and a polar organic compound, at a temperature above the solid-to-liquid phase transitional temperature of the first particulate resin, (b) slowly cooling the liquid mixture to between about 20.degree. C. (68.degree. F.) to about 40.degree. C. (104.degree. F.) below the liquid-to-solid phase transitional temperature of the first particulate PAS in the polar organic compound resin to form a first slurry comprising the polar organic compound and a second particulate PAS resin, and (c) rapidly cooling the first slurry to about 50.degree. C. (122.degree. F.) below the liquid-to-solid phase transitional temperature of the first particulate resin in the polar organic compound, thus forming a second slurry comprising the polar organic compound and a polymeric mixture comprising a third particulate high molecular weight resin, wherein third particulate resin, when recovered has a higher molecular weight than its respective first and second particulate resins, if recovered by conventional means.

Method to recover high molecular weight poly(arylene sulfide) by

The invention is a process to provide more granular, higher bulk density particulate poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resins having associated therewith improved handling. The process for treating a first slurry comprising a solid particulate poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resin dispersed in a liquid medium comprising a polar organic compound, comprises: (a) liquifying the first solid particulate resin in the first slurry to form a first mixture comprising a liquified resin and the polar organic compound; (b) adding, to the first mixture, a sufficient amount of at least one separaton agent to produce a second mixture, and (c) reducing the temperature of the second mixture sufficiently to solidify the liquified resin to form a second slurry comprising a polar organic compound and a second solid particulate resin having a bulk density greater than the first solid particulate resin would if recovered. In other embodiments, the above-described process is accomplished without generating pressure significantly greater than those generated during polymerization reactions of particulate poly(arylene sulfide ketone) or poly(arylene sulfide diketone) resins.

Method to recover granular poly(arylene sulfide ketone) and poly(arylene

In one embodiment, the inventive process comprises: (a) preparing a first slurry comprising a first particulate PAS resin and a polar organic compound, (b) heating the first slurry to a temperature in the range of about 20.degree. C. (68.degree. F.) to about 40.degree. C. (104.degree. F.) below the liquid-to-solid phase transitional temperature of the first particulate resin, and (c) rapidly cooling the first slurry to below about 50.degree. C. (122.degree. F.) below the liquid-to-solid phase transitional temperature of the first particulate resin in the polar organic compound to form a second slurry, comprising the polar organic compound and a polymeric mixture comprising a novel particulate high molecular weight PAS resin and a minor amount of a particulate low molecular weight PAS resin. In another embodiment, the inventive process comprises: (a) preparing a liquid mixture comprising a first particulate PAS resin and a polar organic compound, at a temperature above the solid-to-liquid phase transitional temperature of the first particulate resin, (b) slowly cooling the liquid mixture to between about 20.degree. C. (68.degree. F.) to about 40.degree. C. (104.degree. F.) below the liquid-to-solid phase transitional temperature of the first particulate PAS in the polar organic compound resin to form a first slurry comprising the polar organic compound and a second particulate PAS resin, and (c) rapidly cooling the first slurry to about 50.degree. C. (122.degree. F.) below the liquid-to-solid phase transitional temperature of the first particulate resin in the polar organic compound, thus forming a second slurry comprising the polar organic compound and a polymeric mixture comprising a third particulate high molecular weight resin, wherein third particulate resin, when recovered has a higher molecular weight than its respective first and second particulate resins, if recovered by conventional means.

A process for preparing poly(arylene sulfide sulfone) by contacting a dihaloaromatic sulfone, an organic amide, a sulfur-containing compound, water, and an alkali metal carboxylate, wherein the molar ratio of the alkali metal carboxylate to the sulfur-containing compound is about 0.002:1 to less than 0.05:1.

Process for preparing poly(arylene sulfide sulfone) with controlled

A method for recovering a crystalline poly(arylene sulfide) from a slurry comprising a particulate poly(arylene sulfide), a polar organic compound, and water, said method comprising:

Method to recover particulate poly(arylene) sulfides with vaporized

A method of making a poly(arylene sulfide/sulfone) resin comprises heating amorphous poly(arylene sulfide/sulfone) resin at an elevated temperature but below the melting temperature of the resin in a vacuum environment so that extrudate made from the resin is smooth and has reduced gas bubble content. The invention also relates to poly(arylene sulfide/sulfone) resin made in accordance with the method.

Method of treating a poly(arylene sulfide/sulfone) resin, and

A method is provided for recovering poly(arylene sulfide) from a mixture comprising a liquid-phase poly(arylene sulfide) and a polar organic compound, wherein the liquid mixture is contacted by an amount of a liquid, vaporized, or mixed phase separation agent at least sufficient to effect or enhance a phase separation of the liquid-phase poly(arylene sulfide) component from the polar organic compound. The poly(arylene sulfide) resins recovered according to this invention generally exhibit uniform particle size and do not tend to adhere to vessel walls during the recovery.

Growing community of inventors

Madison, NJ, United States of America

Afif M Nesheiwat