Search

John Semen Phones & Addresses

  • 8643 Sharlane Dr, Baton Rouge, LA 70809 (225) 293-7044
  • 8643 Sharlane Dr, Baton Rouge, LA 70809

Work

Position: Food Preparation and Serving Related Occupations

Publications

Us Patents

Granular Polymer Additives And Their Preparation

View page
US Patent:
6515052, Feb 4, 2003
Filed:
Feb 23, 2001
Appl. No.:
09/792190
Inventors:
John Semen - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C08K 553
US Classification:
524115, 2524002, 25240023, 25240024, 524130, 524133, 524136
Abstract:
A compacted particulate polymer additive composition in a dry granular form formed from the following components: (a) at least one particulate organic phosphite, organic phosphonite, and/or organic phosphonate, and (b) one or more particulate polymer additives other than an organic phosphite, organic phosphonite, or organic phosphonate; wherein the particles of said composition are held together in compacted dry granular form exclusively or substantially exclusively by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (a), and optionally by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (b). Compositions of this type except that there is no component (b) are also described.

Additive System For Polymers In Pellet Form Which Provides Proportioned Stabilization And Internal Mold Release Characteristics

View page
US Patent:
6596198, Jul 22, 2003
Filed:
Apr 28, 2000
Appl. No.:
09/561268
Inventors:
John Semen - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C09K 1532
US Classification:
25240024, 25240053, 252403, 252407
Abstract:
A pelleted stabilizer additive system and a method of making same with a good pellet yield, preferably at least about 90 wt. %. The stabilizer additive system comprises at least a stabilizer and a processing aid, preferably a mold release agent. The processing aid has a lower melting temperature than the stabilizer. The stabilizer comprises less than 50 wt. % the combined total weight of the stabilizer and the mold release agent.

Sterically Hindered Phenol Antioxidant Granules Having Balanced Hardness

View page
US Patent:
6800228, Oct 5, 2004
Filed:
Mar 20, 2000
Appl. No.:
09/528675
Inventors:
John Semen - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
B29C 6700
US Classification:
264109, 264115, 264117, 264118, 252404, 252407, 25240024, 25218229
Abstract:
Sterically hindered phenol antioxidant additive granules are formed from a paste comprising an organic processing agent comprising a friability reduction agent. The friability reduction agent preferably is an alcohol, more preferably an alkanol having up to about 8 carbon atoms, most preferably methanol, ethanol, and/or isopranol. After drying, the granules consist essentially of the sterically hindered phenol antioxidant additive system. The granules have a balanced hardness that provides sufficient abrasion resistance while permitting ready dispersion into a polymer host.

Granular Polymer Additives And Their Preparation

View page
US Patent:
6821456, Nov 23, 2004
Filed:
Feb 23, 2001
Appl. No.:
09/792087
Inventors:
John Semen - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C09K 1508
US Classification:
252404, 25240024, 25218229, 252407, 264109, 264115, 264117, 264118
Abstract:
A compacted particulate polymer additive composition in a dry granular form formed from a substantially uniform mixture of the following components: (a) at least one particulate sterically-hindered phenolic compound, and (b) one or more particulate polymer additives other than a sterically-hindered phenolic compound; wherein the particles of said composition are held together in compacted dry granular form exclusively or substantially exclusively by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (a), and optionally by contact with dried surfaces of in situ desolvated particles from particles of one or more at least partially solvated components of (b). Compositions of this type except that there is no component (b) are also described.

Granular Polymer Additives And Their Preparation

View page
US Patent:
7425290, Sep 16, 2008
Filed:
Aug 4, 2004
Appl. No.:
10/911253
Inventors:
John Semen - Baton Rouge LA, US
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
B29C 67/00
B29C 67/02
C09K 15/08
US Classification:
264109, 264115, 264118, 264140, 264141, 264128, 264122, 264117, 264143, 264144, 264145, 252407, 25240024, 25240023, 25218229, 252404
Abstract:
A compacted particulate polymer additive composition in a dry granular form formed from a substantially uniform mixture of the following components:.

Sterically Hindered Phenol Antioxidant Granules Having Balanced Hardness

View page
US Patent:
20050006627, Jan 13, 2005
Filed:
Aug 4, 2004
Appl. No.:
10/911255
Inventors:
John Semen - Baton Rouge LA, US
International Classification:
C09K015/04
US Classification:
252399000
Abstract:
Sterically hindered phenol antioxidant additive granules are formed from a paste comprising an organic processing agent comprising a friability reduction agent. The friability reduction agent preferably is an alcohol, more preferably an alkanol having up to about 8 carbon atoms, most preferably methanol, ethanol, and/or isopranol. After drying, the granules consist essentially of the sterically hindered phenol antioxidant additive system. The granules have a balanced hardness that provides sufficient abrasion resistance while permitting ready dispersion into a polymer host.

Granular Polymer Additives And Their Preparation

View page
US Patent:
20090054698, Feb 26, 2009
Filed:
Aug 29, 2008
Appl. No.:
12/201379
Inventors:
John Semen - Baton Rouge LA, US
Assignee:
ALBEMARLE CORPORATION - Baton Rouge LA
International Classification:
C07C 39/00
B29C 43/52
US Classification:
568716, 264330
Abstract:
A compacted particulate polymer additive composition in a dry granular form formed from a substantially uniform mixture of the following components:

Low Dust Balanced Hardness Antioxidant Agglomerates And Process For The Production Of Same

View page
US Patent:
61268631, Oct 3, 2000
Filed:
Dec 2, 1998
Appl. No.:
9/204121
Inventors:
John Semen - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C09K 1508
C09K 1514
C09K 1524
B32B 516
B29B 900
US Classification:
252404
Abstract:
The present invention is directed to a process for the production of agglomerates of a sterically hindered phenol antioxidant such that the agglomerates have a balanced hardness so as to resist abrasion during conveyance yet being readily dispersed in a host plastic. Such novel agglomerates are achieved through the use of a processing aid consisting of a solvent selected from the group consisting of methylene chloride, chloroform, toluene, acetone, methylethylketone, xylene, cyclohexane, styrene, methylcyclohexane and hexane having at least one gram of antioxidant dissolved therein per 100 mL of solvent and from about 20 to about 50 weight percent of an alcohol of the formula ROH wherein R is an alkyl group of 1 to 8 carbon atoms and thereafter using the resulting solution of solvent, alcohol, and antioxidant to form a paste of additional portions of the antioxidant which is thereafter agglomerated and dried. The present invention further provides a novel process for controlling the hardness of an agglomerated sterically hindered phenol antioxidant or a mixture of such antioxidant and a secondary phosphite antioxidant through the use of a processing aid wherein there is employed from 20 to about 50 weight percent of an alcohol of the formula ROH and wherein the hardness of the resulting agglomerate is inverse to the amount of alcohol employed in the system.
John N Semen from Baton Rouge, LADeceased Get Report