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Class Information
Number: 203/38
Name: Distillation: processes, separatory > With chemical reaction > Including step of adding catalyst or reacting material > Organic material
Description: Processes in which the added material is organic.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7304176 |
Process for producing easily polymerizable substance |
Dec. 4, 2007 |
| 7169268 |
Color stabilization of amines |
Jan. 30, 2007 |
| 7157610 |
Process for recovering methanol |
Jan. 2, 2007 |
| 7128813 |
Process for manufacturing high purity methacrylic acid |
Oct. 31, 2006 |
| 7074971 |
Recovery of ethylene and propylene from a methanol to olefin reaction system |
Jul. 11, 2006 |
| 7048834 |
Method for purification of acrylic acid |
May. 23, 2006 |
| 6964728 |
Separation process |
Nov. 15, 2005 |
| 6939444 |
Sulfur-bearing residue treatment system |
Sep. 6, 2005 |
| 6849162 |
Method for the production of propylene oxide |
Feb. 1, 2005 |
| 6790319 |
Method for recovering titanium compound, process for preparing titanium halide, and process for preparing catalyst for polymer production |
Sep. 14, 2004 |
| 6632330 |
Process for purification of alkyl alkanoate |
Oct. 14, 2003 |
| 6554966 |
Process for preparing essentially formic acid-free N-alkyl-N'-methylalkyleneureas |
Apr. 29, 2003 |
| 6491795 |
Process for recovering benzyl benzoate |
Dec. 10, 2002 |
| 6423189 |
Process for the preparation of 1,3-dichloropropane |
Jul. 23, 2002 |
| 6365413 |
Thin film thermal oxidative oil deposit testing device and method |
Apr. 2, 2002 |
| 6337412 |
Three stage propylene oxide process |
Jan. 8, 2002 |
| 6262314 |
Process for preparation of ethers in a catalytic distillation column |
Jul. 17, 2001 |
| 6207022 |
Purification of crude (meth) acrylic acid |
Mar. 27, 2001 |
| 6179966 |
Method for producing acrylic acid |
Jan. 30, 2001 |
| 6093845 |
Ester co-production |
Jul. 25, 2000 |
| 6074532 |
Adjunct for removal of aldehydes from chemical manufacturing production streams during distillative purification |
Jun. 13, 2000 |
| 5993609 |
Process for the purification of phosphorus oxychloride |
Nov. 30, 1999 |
| 5951829 |
Separation of heteropoly compounds from polyethers, polyesters and polyether esters |
Sep. 14, 1999 |
| 5929292 |
Distillation column type production method |
Jul. 27, 1999 |
| 5902459 |
Recovery of products from toluenediisocyanate residues |
May. 11, 1999 |
| 5817906 |
Process for producing light olefins using reaction with distillation as an intermediate step |
Oct. 6, 1998 |
| 5759358 |
Process for pure grade acrylic acid |
Jun. 2, 1998 |
| 5746892 |
Process for pure grade acrylic acid |
May. 5, 1998 |
| 5667644 |
Method for producing a dimerized aldehyde |
Sep. 16, 1997 |
| 5653853 |
Method of removing iodine compounds from crude acetic anhydride |
Aug. 5, 1997 |
| 5605606 |
Removal foulants from distillation train using non-solvent precipitation |
Feb. 25, 1997 |
| 5571386 |
Process for grade acrylic acid |
Nov. 5, 1996 |
| 5565069 |
Process for producing 5-vinyl-2-norbornene |
Oct. 15, 1996 |
| 5554796 |
Removal of primary and secondary hydroperoxide impurities from tertiary hydroperoxides |
Sep. 10, 1996 |
| 5522971 |
Dry neutralization of olefinically reactive organic liquid phases |
Jun. 4, 1996 |
| 5516406 |
Process for purifying acids formed during liquid phase oxidation of butane |
May. 14, 1996 |
| 5512691 |
Process for the production of tocopherol concentrates |
Apr. 30, 1996 |
| 5487817 |
Process for tocopherols and sterols from natural sources |
Jan. 30, 1996 |
| 5482597 |
Purification of crude (meth)acrylic acid |
Jan. 9, 1996 |
| 5468350 |
Apparatus for manufacturing ultrapure water |
Nov. 21, 1995 |
| 5423953 |
Process for recovering column bottom residues produced by fractional distillation of ethylene glycol |
Jun. 13, 1995 |
| 5419815 |
Process for purifying fatty acid amides |
May. 30, 1995 |
| 5395486 |
Dehydration process |
Mar. 7, 1995 |
| 5370774 |
Process for isolating pure diketene with recovery of materials of value |
Dec. 6, 1994 |
| 5344954 |
Process for the preparation of diaryl carbonates |
Sep. 6, 1994 |
| 5342487 |
Distillation process |
Aug. 30, 1994 |
| 5318673 |
Process for the purification of 1,1-dichloro-1-fluoroethane |
Jun. 7, 1994 |
| 5316627 |
Process for producing odorless dimethyl ether |
May. 31, 1994 |
| 5314588 |
Process for recovering polysocyanates from the distillation residues obtained in the production of tolylene diisocyanate |
May. 24, 1994 |
| 5312959 |
Purification of 2-methylglutaronitrile or adiponitrile |
May. 17, 1994 |
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