Albemarle Corporation

Other

Hickory Springs Manufacturing Company

William J Layman, Jr

Arthur G Mack

Charles H Kolich

Govindarajulu Kumar

Douglas W Luther

Zhongxin Ge

Techen Tsao

Junzuo Wang

Jonathan P McCarney

Hoover Chew

Bo Liu

Jeffrey Todd Aplin

Steven A Anderson

Jorge Morice

Ronny W Lin

Kimberly M White

Kannappan C Chockalingam

W Dirk Klobucar

Tse-Chong Wu

Robert H Allen

Bruce C Berris

Chi Hung Cheng

Gary D Focht

R Carl Herndon, Jr

Gary D Heidebrecht

Thorsten W Brockmann

Eldon E Atkinson, Jr

George W Welsh

Anne M Sauer

Joseph D McLean

Neal J Colonius

Ranjit K Roy

Yaping Zhong

Jean-Pierre Lecouv E

Ravindra R Joshi

Sarah C Jones

This invention relates to processes for forming hydrogen mediated saline hydride initiated anionic polystyrene distributions via novel polymerization conditions. This invention also relates to novel hydrocarbon soluble super active saline hydride catalyst and reagent compositions useful in conducting the hydrogen mediated saline hydride initiated polymerizations of this invention. This invention also relates to novel low molecular weight polystyrene polymer composition formed exclusively from styrene and molecular hydrogen as the monomers.

Process and catalyst for hydrogen mediated saline hydride initiated anionic chain transfer polymerization

This invention relates to processes for forming hydrogen mediated saline hydride initiated anionic polymer distributions via novel polymerization conditions in which molecular hydrogen is a chain transfer agent and a Lithium Aminoalkoxide Complexed Saline Hydride (LOXSH) forms an anionic polymer chain initiating species by addition of saline hydride to an anionically polymerizable hydrocarbon monomer. This invention further relates to polystyrene compositions having greatly improved microstructures free of co-product polymer chain distributions. This invention also relates to novel hydrocarbon soluble saline hydride catalyst and reagent compositions useful in conducting the hydrogen mediated saline hydride initiated polymerizations of this invention. This invention further relates to hydrocarbon soluble lithium hydride catalysts and reagent compositions formed from dimethylaminoethanol, an alkyllithium reagent and molecular hydrogen. It also relates to the catalyst forming processes, the use of the catalyst in hydrogen mediated anionic polymerization of styrene (HMAPS) and the resulting low molecular weight polystyrene distributions of low asymmetry and high 'head to tail' microstructure.

Process and hydrocarbon soluble saline hydride catalyst for hydrogen mediated saline hydride initiated anionic chain transfer polymerization and polymer distribution compositions produced therefrom

This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter 'ACTVAP'. The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, T, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.

Low molecular weight brominated polymers, processes for their manufacture and their use in thermoplastic formulations

Described are a particular group of novel aromatic hydrocarbon telomers that, on bromination, result in the formation of novel flame retardants having a uniquely beneficial combination of properties. The resultant flame retardants and uses thereof are also described. The disclosure includes descriptions of methods for preparing both the aromatic hydrocarbon telomers and the brominated flame retardant polymers.

Brominated flame retardants and precursors therefor

This invention provides adducts, mixtures of adducts and oligomers, and/or mixtures of adducts, oligomers, and low molecular weight polymers formed from monovinylaromatic hydrocarbons.

Adducts, adducts and oligomers, or adducts, oligomers and low molecular weight polymers, and their preparation

Described is process technology for producing brominated aromatic polymer compositions from low molecular weight aromatic polymer compositions. The specified conditions used in the process enable the formation of products having superior color and thermal stability properties.

Bromination of low molecular weight aromatic polymer compositions

This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter 'ACTVAP'. The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, Tg, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.

Low molecular weight brominated polymers and their use in thermoplastic formulations

Novel polymer compositions of specified formula are converted into pellets of this invention by process technology provided by this invention. By forming a binder free melt of a polymer of such polymer compositions, and converting the melt into pellets as described here-in, pellets can be formed produce during production, handling, and use, no more than acceptably small amounts of 'fines' or air-entrainable dusts.

Pelletized low molecular weight brominated aromatic polymer compositions

This invention relates to novel and useful toluene and styrene derived telomer distributions, such distributions being desirable substrates for the preparation of brominated flame retardants.

Toluene and styrene derived telomer distributions and brominated flame retardants produced therefrom

Bromination of telomer mixtures derived from toluene and styrene

The present invention relates to the use of low triphenyl phosphate, high phosphorous content aryl phosphates with high ortho alkylation as flame retardants in polyurethane or polyisocyanurate foams or polyurethane or polyisocyanurate foam formulations.

Use of low triphenylphosphate, high phosphorous content isopropyl phenyl phosphates as flame retardants in polyurethane or polyisocyanurate foams

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Baton Rouge, LA, United States of America

William J Layman, Jr