John Carroll Prindle Jr.
Engineering at July St, Baton Rouge, LA
License number
Louisiana PE.0025323
Issued Date
May 11, 1993
Expiration Date
Sep 30, 2017
Category
Civil Engineer
Type
Chemical Engineer
Address
Address
2450 July St, Baton Rouge, LA 70808
Professional information
Concurrent Sulfur Dioxide Oxidation Process And Its Use In Manufacture Of Tetrabromophthalic Anhydride
US Patent:
2007026, Nov 8, 2007
Filed:
Apr 27, 2004
Appl. No.:
11/568308
Inventors:
William Harrod - Minden LA, US
Tyson Hall - Magnolia AR, US
Christopher Knight - Prairieville LA, US
John Prindle - Baton Rouge LA, US
David Armstrong - Walker LA, US
Tyson Hall - Magnolia AR, US
Christopher Knight - Prairieville LA, US
John Prindle - Baton Rouge LA, US
David Armstrong - Walker LA, US
Assignee:
ALBEMARLE CORPORATION - Baton Rouge LA
International Classification:
C07D 307/89, C01B 17/79
US Classification:
549247000, 423533000
Abstract:
Sulfur trioxide is formed by a process wherein a first gaseous stream comprised of SO, SO, and oxygen and/or air is passed into a bed of a vanadium-containing catalyst that oxidizes S0to SOand that releases therefrom a second gaseous stream comprised of sulfur trioxide. This process is improved in a first case by providing vaporized sulfur in the first gaseous stream so that the resultant mixture passes through a substantial portion of the catalyst bed, and maintaining the catalyst bed at one or more temperatures in the range of about 450 to about 700° C. The sulfur is oxidized to S0. As a result, the second gaseous stream released from the downstream end portion of the catalyst bed has an enriched content of sulfur trioxide, which can be used for production of compounds such as tetrabromophthalic anhydride. In a second case, a stream of sulfur dioxide is generated from sulfur and an oxidant, and this stream is introduced into the first gaseous stream referred to above. In this second case, the feed of sulfur dioxide replaces the vaporized sulfur used in the first case. As in the first case, an enriched stream of sulfur trioxide is released from the downstream end of the catalyst and can be used for producing compounds such as tetrabromophthalic anhydride.
Flame Retardant Styrenic Polymers
US Patent:
5811470, Sep 22, 1998
Filed:
Aug 27, 1997
Appl. No.:
8/921205
Inventors:
John C. Prindle - Baton Rouge LA
Christopher J. Nalepa - Baton Rouge LA
Govindarajulu Kumar - Baton Rouge LA
Christopher J. Nalepa - Baton Rouge LA
Govindarajulu Kumar - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C08K 55397, C08K 55317, C08K 5523, C08K 550, C08K 306
US Classification:
521 85
Abstract:
Compositions and methods are described wherein a styrenic polymer is rendered flame retardant by incorporation therein before, during or after its formation, a combination of (a) at least one organic phosphorus additive that (i) is halogen-free, and (ii) is composed solely of carbon, hydrogen, and phosphorus, and optionally and preferably one or more of the elements nitrogen, oxygen, and sulfur; and (b) elemental sulfur; in proportions such that (i) the sulfur content from b) is less than 2 percent by weight of the weight of the styrenic polymer plus the weight of a) and b), and (ii) the styrenic polymer plus ingredients a) and b) can provide test specimens which exhibit an LOI of at least 24 if tested in accordance with ASTM Standard Test Method D 2863-87.
Method For Producing Alkyl Mercaptans And/Or Dialkyl Monosulfides
US Patent:
6198003, Mar 6, 2001
Filed:
Apr 20, 1999
Appl. No.:
9/295622
Inventors:
James E. Boone - Baton Rouge LA
Michael D. Matthews - Walker LA
John C. Prindle - Baton Rouge LA
Sharon D. Booth McGee - Baton Rouge LA
Michael D. Matthews - Walker LA
John C. Prindle - Baton Rouge LA
Sharon D. Booth McGee - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C07C31908, C07C31916
US Classification:
568 71
Abstract:
A highly efficient method of producing alkyl mercaptan and/or dialkyl monosulfides which involves employing carbon dioxide as an internal coolant is described. Only negligible amounts of carbonyl sulfide were formed. In addition, relatively easy separation of carbon dioxide from the reaction mixture facilitates an efficient coolant recycle process, giving a simple and effective mode of temperature control.
Cracking Of Dicyclopentadiene
US Patent:
2008009, Apr 24, 2008
Filed:
Jun 30, 2004
Appl. No.:
11/571413
Inventors:
John C. Prindle Jr - Baton Rouge LA, US
Dru J. Manuel - Ventress LA, US
Dru J. Manuel - Ventress LA, US
Assignee:
ALBEMARLE CORPORATION - Baton Rouge LA
International Classification:
C07C 5/31
US Classification:
585354
Abstract:
This invention provides a process for forming monomers from a dimer, wherein the dimer is dicyclopentadiene, di(methylcyclopentadiene), di(ethyleyclopentadiene), or a mixture of any two or more of these. The process comprises i) heating a liquid mixture comprising at least one dimer and at least one liquefying agent in a vaporization zone to at least the vaporization temperature of said mixture to form a vaporized mixture, wherein the vaporization zone consists essentially of a substantially straight conduit in which said liquid mixture occupies less than the entire cross sectional area of said conduit; and ii) introducing at least a portion of the vaporized mixture from i) into a cracking zone such that monomers are formed. This process is conducted at about atmospheric pressure.