Charles Howard Kolich

US Patent:

6521714, Feb 18, 2003

Filed:

Mar 12, 2001

Appl. No.:

09/804714

Inventors:

Charles H. Kolich - Baton Rouge LA
Billie B. Dadgar - Magnolia AR
Donald E. Balhoff - Baton Rouge LA
Meng-Sheng Ao - Baton Rouge LA
Homer C. Lin - Houston TX

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C08F 822

US Classification:

5253334, 525356

Abstract:

Novel brominated styrenic polymers having superior properties rendering them ideally suited for current commercial requirements for use as flame retardants in thermoplastic polymers are described. These properties include such high thermal stabilities in a standard Thermal Stability Test as to dramatically reduce if not eliminate the possibility of corrosion problems due to release of hydrogen halide at elevated polymer processing temperatures. Other special properties of the novel brominated styrenic polymers include, for example, low color or staining properties, and excellent melt flow characteristics.

US Patent:

6657028, Dec 2, 2003

Filed:

Aug 1, 2002

Appl. No.:

10/211648

Inventors:

J. Todd Aplin - Baton Rouge LA
Charles H. Kolich - Baton Rouge LA
W. Dirk Klobucar - Baton Rouge LA
Kimberly A. Maxwell - Baton Rouge LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C08F 448

US Classification:

526181, 526 88, 526173, 526204, 526209, 526346

Abstract:

A batch process for the anionic polymerization of a styrenic monomer is described. The process brings together a liquid saturated hydrocarbon diluent, an ether promoter, an organolithium initiator and a styrenic monomer in such a way so as to maintain the reaction mixture at or below about 55Â C. and so that the amount of organolithium initiator employed is in the range of about 1 to about 10 mol %, based upon the total amount of styrenic monomer to be added. Favorable polydispersity and molecular weight polymer characteristics are obtained.

US Patent:

7153901, Dec 26, 2006

Filed:

Nov 21, 2003

Appl. No.:

10/719948

Inventors:

Saadat Hussain - Baton Rouge LA, US
Jeffrey Todd Aplin - Baton Rouge LA, US
William R. Brown - Baton Rouge LA, US
Charles H. Kolich - Baton Rouge LA, US
Arthur G. Mack - Prairieville LA, US

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C08K 5/12

US Classification:

524464, 524469, 252609

Abstract:

Provided are new flame retardants and liquid flame retardant additive compositions of low viscosity for use in flexible polyurethane foams. The new flame retardants are the reaction product of at least one brominated aromatic diester diol with at least one alcohol-reactive agent. Preferred liquid flame retardant additive compositions are capable of minimizing visible scorching of the foam during its production. Flexible flame retardant polyurethane foams and methods for their production are also provided. The flame retardant additive compositions are formed at least from a) at least one reaction product of a brominated aromatic diester diol and an alcohol-reactive agent; b) at least one hindered amine antioxidant; and c) at least one phenolic antioxidant in which the phenolic ring is substituted by an alkanoic acid alkyl ester group in which alkanoic acid moiety has in the range of 2 to about 4 carbon atoms and the alkyl group has in the range of about 6 to about 16 carbon atoms.

US Patent:

7446153, Nov 4, 2008

Filed:

Dec 19, 2006

Appl. No.:

11/612705

Inventors:

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 8/18

US Classification:

525355, 5253334, 525356, 525357, 525358, 5253591, 5253592, 5253593, 5253594, 5253595, 5253596

Abstract:

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.

US Patent:

7632893, Dec 15, 2009

Filed:

Jun 14, 2006

Appl. No.:

11/453542

Inventors:

Charles H. Kolich - Baton Rouge LA, US
Jeffrey Todd Aplin - Baton Rouge LA, US
John F. Balhoff - Baton Rouge LA, US

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C08F 12/08

US Classification:

5253333, 5253334, 525356, 525357, 525370, 526346

Abstract:

Preparing brominated styrenic polymer by maintaining a mixture formed from (i) brominating agent, (ii) a solvent solution of styrenic polymer, and (iii) aluminum halide catalyst, at −20 to +20 C. , and terminating bromination in 20 minutes or less. New brominated anionic styrenic polymers have better melt flow and/or lower initial ΔE values than the best previously-known brominated anionic styrenic polymers. Other features of such new polymers include high thermal stabilities at 320 C. and/or very low initial color values. Brominated styrenic polymers, especially brominated anionic styrenic polymers, are useful as flame retardants for thermoplastic polymers.

US Patent:

7638583, Dec 29, 2009

Filed:

Dec 19, 2006

Appl. No.:

11/612991

Inventors:

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.

US Patent:

8071688, Dec 6, 2011

Filed:

Dec 11, 2009

Appl. No.:

12/636250

Inventors:

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, 525355, 525371, 5253592, 5253593, 5253594, 5253595, 5253596, 526346, 526237, 5263472

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.

US Patent:

8168723, May 1, 2012

Filed:

Dec 4, 2009

Appl. No.:

12/631333

Inventors:

Charles H. Kolich - Baton Rouge LA, US
Jeffrey Todd Aplin - Pasadena TX, US
John F. Balhoff - Baton Rouge LA, US

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C08F 8/20

US Classification:

5253333, 525356, 525357, 525370, 5253592, 5253593, 5253594, 5253595, 5253596, 526346

Abstract:

Preparing brominated styrenic polymer by maintaining a mixture formed from (i) brominating agent, (ii) a solvent solution of styrenic polymer, and (iii) aluminum halide catalyst, at −20 to +20 C. , and terminating bromination in 20 minutes or less. New brominated anionic styrenic polymers have better melt flow and/or lower initial ΔE values than the best previously-known brominated anionic styrenic polymers. Other features of such new polymers include high thermal stabilities at 320 C. and/or very low initial color values. Brominated styrenic polymers, especially brominated anionic styrenic polymers, are useful as flame retardants for thermoplastic polymers.