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Class Information
Number: 585/817
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By cooling of liquid to obtain solid, e.g., crystallization, etc. > With addition of extraneous material > Before crystal formation
Description: Subject matter in which the material is added before the chilling step is completed.










Patents under this class:

Patent Number Title Of Patent Date Issued
8575412 Processes for preparing triphenylene Nov. 5, 2013
8558048 Stabilized protein crystals, formulations comprising them and methods of making them Oct. 15, 2013
8163970 Method for adiabatic cooling type crystallization of organic compound and apparatus therefor Apr. 24, 2012
7605296 Method for separating and purifying 2,6-dimethylnaphthalene Oct. 20, 2009
6894202 Method for producing 2,6-dimethylnaphthalene May. 17, 2005
6737558 Process for the separation of 2,6-dimethylnaphthalene from mixtures containing it May. 18, 2004
6525235 Method for manufacturing 2,6-dimethylnaphthalene Feb. 25, 2003
6291735 Process for preparation of high-purity indene Sep. 18, 2001
6072098 Process for producing highly pure 2,6-dimethylnaphthalene Jun. 6, 2000
5948949 Process for producing 2,6-dimethylnaphthalene Sep. 7, 1999
5264653 Process for purifying 1,1,3,4,4,6-hexamethyltetralin Nov. 23, 1993
5055630 Process for making p-xylene with a purity of more than 99.8% by weight Oct. 8, 1991
4992619 Process for separating methyl substituted naphthalene by crystallization under pressure Feb. 12, 1991
4956520 Separation process Sep. 11, 1990
4952750 Process for making p-xylene with a purity of at least 99.5% Aug. 28, 1990
4915794 Process for converting internal olefins to alpha olefins Apr. 10, 1990
4914257 Method and apparatus for recovering high purity toluene, hexane, titanium tetrachloride and tetrahydrofuran from mixtures Apr. 3, 1990
4902850 Purification of anethole by crystallization Feb. 20, 1990
4331826 Process for separating p-xylene from a hydrocarbon mixture May. 25, 1982
4153630 Inclusion compounds, process for preparation thereof, and process for separating isomers using the inclusion compounds May. 8, 1979
4141924 Three phase crystallization Feb. 27, 1979
4079087 Three phase crystallization of bisphenol A Mar. 14, 1978
4046790 Catalytically active complex of titanium, cyclopentadienyl ligands, and ammonia Sep. 6, 1977
4043874 Process for separating and recovering the constituents of an exhausted solvent mixture used for cleansing reactors for the polymerization of vinyl chloride Aug. 23, 1977











 
 
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