Chi H. Cheng - Baton Rouge LA Ronny W. Lin - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C07C 6500
US Classification:
562474, 562473, 560406
Abstract:
This invention describes processes for producing halomagnesium fluoroaryl carboxylates. In one such process, a fluoroaryl Grignard reagent is added to an anhydrous liquid ethereal medium pretreated with carbon dioxide.
Ralph W. Magin - Baton Rouge LA Mahmood Sabahi - Baton Rouge LA Robert H. Allen - Baton Rouge LA Noel H. Brantley - Baton Rouge LA Hassan Y. Elnagar - Baton Rouge LA Ronny W. Lin - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
A01N 2902
US Classification:
504356, 514745
Abstract:
Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.
Robert H. Allen - Baton Rouge LA Noel H. Brantley - Baton Rouge LA Hassan Y. Elnagar - Baton Rouge LA Ronny W. Lin - Baton Rouge LA Ralph W. Magin - Baton Rouge LA Mahmood Sabahi - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C07C 1700
US Classification:
570217, 570216
Abstract:
Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.
Robert H. Allen - Baton Rouge LA, US Noel H. Brantley - Baton Rouge LA, US Ronny W. Lin - Baton Rouge LA, US Ralph W. Magin - Baton Rouge LA, US Mahmood Sabahi - Baton Rouge LA, US
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C07C 33/042 A01N 29/08 A01N 31/02
US Classification:
568873, 504174, 514745
Abstract:
Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide.
Preparation Of Brominated Styrenic Polymers Or Resins
Bromination of styrenic polymer is carried out in a closed reaction system to retain HX coproduct (where HX is HBr or HCl, or both) in the bromination reaction mixture at superatmospheric pressure. Preferably, the reaction mixture which includes the brominated styrenic polymer and substantially all of the HX coproduct formed is discharged into an aqueous quenching medium. By operating in this manner, the reaction is terminated and the brominated styrenic polymer of desired bromine content and substantially all HX coproduct are captured in the same operation, process equipment costs are reduced, and processing of the reaction mixture is facilitated.
Brominated Anionic Styrenic Polymers And Their Preparation
Charles H. Kolich - Baton Rouge LA, US John F. Balhoff - Baton Rouge LA, US Martin B. Berdon - Baton Rouge LA, US Ronny W. Lin - Baton Rouge LA, US
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C08F 12/08
US Classification:
5253333, 5253334, 525356, 525357, 525370, 526346
Abstract:
Concurrently fed into a reaction zone held at about 10 C. or less are brominating agent, aluminum halide catalyst, and a solution of anionic styrenic polymer having a GPC Mn about 2000-30,000. The components are in at least two separate feed streams. The feeds are proportioned to maintain (a) the amount of aluminum halide being fed at about 0. 8 mole percent or less based on the amount of aromatic monomeric units in the polymer being fed, and (b) amounts of brominating agent and unbrominated polymer in the reaction zone that produce a final washed and dried polymer product containing about 60-71 wt % bromine. The catalyst is deactivated, bromide ions and catalyst residues are washed away from the reaction mixture, and the brominated anionic styrenic polymer is recovered and dried. The dried polymer has a volatile bromobenzene content of about 600 ppm (wt/wt) or less as well as other beneficial properties.
Brominated Anionic Styrenic Polymers And Their Preparation
Concurrently fed into a reaction zone held at about 10 C. or less are brominating agent, aluminum halide catalyst, and a solution of anionic styrenic polymer having a GPC Mn about 2000-30,000. The components are in at least two separate feed streams. The feeds are proportioned to maintain (a) the amount of aluminum halide being fed at about 0. 8 mole percent or less based on the amount of aromatic monomeric units in the polymer being fed, and (b) amounts of brominating agent and unbrominated polymer in the reaction zone that produce a final washed and dried polymer product containing about 60-71 wt % bromine. The catalyst is deactivated, bromide ions and catalyst residues are washed away from the reaction mixture, and the brominated anionic styrenic polymer is recovered and dried. The dried polymer has a volatile bromobenzene content of about 600 ppm (wt/wt) or less as well as other beneficial properties.
A process and system for separating water from bio-oil by using a partial condenser. The process comprises partially condensing vapor conversion products from a biomass conversion reaction to produce a water-rich overhead stream and a water-depleted stream comprising condensed bio-oil. The partial condenser removes a substantial portion of the water from the bio-oil, while providing an effective and flexible process for producing bio-oil.