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Method for separation of ethylbenzene
Patent report bic zeolites, with subsequent elution of specific peptides and proteins from the hydrophobic zeolites, especially for analytical and preparative purposes. Alternatively, adsorption onto hydrophobic zeolites is performed to enrich in the solution the proportion of specific peptides and proteins that does not bind to the zeolites. Thus, albumin and horseradish peroxidase were separated from IgG by differential adsorption onto a column of sintered hydrophobic zeolite Y.
Resolution of cymene isomers with Y zeolites Y. Fukuda; M. Takahashi Sumitomo Chemical Co. Jpn. Kokai Tokkyo Koho 93,279,271, Oct. 26, 1993; Appl. Mar. 31, 1992 Resolution of cymene isomers comprises treatment of pcymene-containing isomeric mixtures with ~<1.9 wt% H20containing Y zeolites, for selective adsorption of the p-isomer followed by elution.
Separation of mixtures of m- and p-dichlorobenzene using pentasil z e o l i t e s U. Pentling; H.J. Buysch; L. Puppe et al. Bayer A.-G. Ger. Often. 4,218,841, Dec. 16, 1993; Appl. Jun. 9, 1992 The m- and p-isomers of dichlorobenzene (I) are separated by selective adsorption ofp-I on pentasil zeolites in the liquid phase at 20-250 °. The solvent may be a cyclic saturated, alkylaromatic, or haloaromatic hydrocarbon, with the exceptions of PhEt, PhCI, p-xylene, p-CiC6H4Me, and C8H4CI2.The exchangeable cation of the zeolite may be H, a first or second main group element, or a rare earth metal.
Purification of 2,6-dimethylnaphthalene Y. Shirato; K. Shimokawa; M. Shimura et al. Chiyoda Chem. Eng. Construction Co.; Nippon Kokan Kk Jpn. Kokai Tokkyo Koho 93,301,831, Nov. 16, 1993; Appl. Apr. 23, 1992 2,6-Dimethylnaphthalene (I) is separated from a hydrocarbon mixture by (I) bringing said mixture into contact with a zeolite adsorbent for selective separation of 2,7-dimethylnaphthalene; (2) bringing the raffinate (obtained in step 1) into contact with another zeolite adsorbent for separation of I from other dimethylnaphthalenes.
Purification of 1,1,1,2-tetrafluoroethane C.J. Shields Imperial Chemical Industries PIc. PCT Int. Appl. 94,01,386, Jan. 20, 1994; U.K. Appl. Jul. 8, 1992 A process for the removal of F2CHCHF2,a byproduct in the manufacturing of the title compound comprises the use of a zeolite having a mean pore size in the range of 3.8-4.8 A. The zeolite is a 5A synthetic zeolite or a naturally derived chabazite zeolite.
Method for separation of ethylbenzene S. Dan Taiwan Honotsuki Kogyo Kofun Jpn. Kokai Tokkyo Koho 93,154,303, Jun. 22, 1993; Appl. Dec. 4, 1991 The title method involves: (I) using a CO2 gas stream as a carrier to bring a mixture containing xylene isomers and ethylbenzene into contact with a silicalite adsorbent which adsorbs ethylbenzene; (2) extracting ethylbenzene from the said adsorbent by using supercritical CO2. Ethylbenzene (I) was separated from a mixture containing I and p-xylene by the above procedure.
builder, 1-20% sodium silicate, 0.1-5% antiredeposition agent (e.g., sodium polyacrylate or CM-cellulose), 10-80% inorganic filler (e.g., Na2SO4 and/or Na2CO3), and 1-30% surfactant mixture.
Perfume-containing capsules with good flowability for laundry detergents G. Berry; J.M. Marynowski; K.W. Kinne Procter and Gamble Co. PCT Int. Appl. 93,13,195, Jul. 8, 1993; U.S. Appl. Dec. 20, 1991 A slurry of perfume-containing capsules is partially dried to give a wet cake which is combined with silica or an aluminosilicate having particle size 0.1-150 microns and dried to give capsules showing better flowability than dried capsules containing no silica or aluminosilicate particles.
Stabilization of bleach precursors in zeolite-containing detergent compositions A.P. Chapple; M.RoP. Van Vliet Uni/ever PLC; Uni/ever N. V. Eur. Pat. Appl. 552,054, Jul. 21, 1993; U.K. Appl. Jan. 17, 1992 The storage stability of a bleach precursor such as cholyl-4sulfophenyl-carbonate or (Ac2NCH2)2 in the title compositions, which have bulk d >700 g/I and contain a peroxygen bleach, is improved by using zeolite MAP instead of zeolite A.
Water-soluble packages containing laundry detergents T. Nehashi; Y. Fujii; Y. Yamaguchi et al. Kao Corp, Jpn. Kokai Tokkyo Koho 93,214,398, Aug. 24, 1993; Appl. Oct. 30, 1991 In laundry detergents packaged in small portions by 10-150 microns water-soluble films, the compositions contain (A) nonionic surfactants 5-80, (B) porous oil-absorbing supports 5-60, and (C) crystalline aluminosilicate salts 10-60% where M/(m x V) ~ 2.0g/cm 3[M = A content, (%); m = Bcontent (%); V = pore volume of B (cm3/g)].
Manufacture of stabilized sodium percarbonate M. Saito; H. Kikuchi; H. Ando et al. Nippon Peroxide Co. Ltd. Jpn. Kokai Tokkyo Koho 93,310,402, Nov. 22, 1993; Appl. May 8, 1992 Sodium percarbonate is coated with aqueous slurries containing 30-90 wt% water and coating materials at least one of each selected from the following two groups: (A) sulfonic acids of aromatic hydrocarbons, sulfuric acid esters of alkyl aromatic hydroxyhydrocarbon-ethylene oxide adducts, sulfuric acid esters of aliphatic higher alcohol, and Mg-, alkali metal-, or Casalts of sulfuric acid esters of aliphatic higher alcohol-ethylene oxide adducts; and (B) alkali metal silicates, carbonates, bicarbonates, and sulfates. The mixing weight ratio of coating materials of the two groups is (A)I(B) = 1/20-20/1, and total coating amount is 0.1-30 wt% (vs. sodium percarbonate). The average diameter of the coating materials in group (B) is 10-500 microns. The sodium percarbonate is used as a bleaching agent of zeolite-blended phosphate-free detergents.
MISCELLANEOUS A P P L I C A T I O N S
DETERGENTS Granular laundry detergent and detergent builder containing no phosphate T. Crutcher; J.D. Sauer; K.R. Smith et al. Ethyl Corp. PCT Int. Appl. 93,12,217, Jun. 24, 1993; U.S. Appl. Dec. 19, 1991 A laundry detergent showing cleaning performance similar to phosphate-containing detergents contains 1-50% zeolite
Colorless methacrylic acid and acrylic acid esters K. Watanabe; M. Narita Kuraray Co. Jpn. Kokai Tokkyo Koho 93,310,637, Nov. 22, 1993; Appl. Apr. 30, 1992 Esters are contacted with zeolites having SiO2/AIO 2 ratio 1:20 optionally modified with alkali metals to remove impurities.
Zeolites 15:181-185, 1995
183
Resolution of cymene isomers with Y zeolites Y. Fukuda; M. Takahashi Sumitomo Chemical Co. Jpn. Kokai Tokkyo Koho 93,279,271, Oct. 26, 1993; Appl. Mar. 31, 1992 Resolution of cymene isomers comprises treatment of pcymene-containing isomeric mixtures with ~<1.9 wt% H20containing Y zeolites, for selective adsorption of the p-isomer followed by elution.
Separation of mixtures of m- and p-dichlorobenzene using pentasil z e o l i t e s U. Pentling; H.J. Buysch; L. Puppe et al. Bayer A.-G. Ger. Often. 4,218,841, Dec. 16, 1993; Appl. Jun. 9, 1992 The m- and p-isomers of dichlorobenzene (I) are separated by selective adsorption ofp-I on pentasil zeolites in the liquid phase at 20-250 °. The solvent may be a cyclic saturated, alkylaromatic, or haloaromatic hydrocarbon, with the exceptions of PhEt, PhCI, p-xylene, p-CiC6H4Me, and C8H4CI2.The exchangeable cation of the zeolite may be H, a first or second main group element, or a rare earth metal.
Purification of 2,6-dimethylnaphthalene Y. Shirato; K. Shimokawa; M. Shimura et al. Chiyoda Chem. Eng. Construction Co.; Nippon Kokan Kk Jpn. Kokai Tokkyo Koho 93,301,831, Nov. 16, 1993; Appl. Apr. 23, 1992 2,6-Dimethylnaphthalene (I) is separated from a hydrocarbon mixture by (I) bringing said mixture into contact with a zeolite adsorbent for selective separation of 2,7-dimethylnaphthalene; (2) bringing the raffinate (obtained in step 1) into contact with another zeolite adsorbent for separation of I from other dimethylnaphthalenes.
Purification of 1,1,1,2-tetrafluoroethane C.J. Shields Imperial Chemical Industries PIc. PCT Int. Appl. 94,01,386, Jan. 20, 1994; U.K. Appl. Jul. 8, 1992 A process for the removal of F2CHCHF2,a byproduct in the manufacturing of the title compound comprises the use of a zeolite having a mean pore size in the range of 3.8-4.8 A. The zeolite is a 5A synthetic zeolite or a naturally derived chabazite zeolite.
Method for separation of ethylbenzene S. Dan Taiwan Honotsuki Kogyo Kofun Jpn. Kokai Tokkyo Koho 93,154,303, Jun. 22, 1993; Appl. Dec. 4, 1991 The title method involves: (I) using a CO2 gas stream as a carrier to bring a mixture containing xylene isomers and ethylbenzene into contact with a silicalite adsorbent which adsorbs ethylbenzene; (2) extracting ethylbenzene from the said adsorbent by using supercritical CO2. Ethylbenzene (I) was separated from a mixture containing I and p-xylene by the above procedure.
builder, 1-20% sodium silicate, 0.1-5% antiredeposition agent (e.g., sodium polyacrylate or CM-cellulose), 10-80% inorganic filler (e.g., Na2SO4 and/or Na2CO3), and 1-30% surfactant mixture.
Perfume-containing capsules with good flowability for laundry detergents G. Berry; J.M. Marynowski; K.W. Kinne Procter and Gamble Co. PCT Int. Appl. 93,13,195, Jul. 8, 1993; U.S. Appl. Dec. 20, 1991 A slurry of perfume-containing capsules is partially dried to give a wet cake which is combined with silica or an aluminosilicate having particle size 0.1-150 microns and dried to give capsules showing better flowability than dried capsules containing no silica or aluminosilicate particles.
Stabilization of bleach precursors in zeolite-containing detergent compositions A.P. Chapple; M.RoP. Van Vliet Uni/ever PLC; Uni/ever N. V. Eur. Pat. Appl. 552,054, Jul. 21, 1993; U.K. Appl. Jan. 17, 1992 The storage stability of a bleach precursor such as cholyl-4sulfophenyl-carbonate or (Ac2NCH2)2 in the title compositions, which have bulk d >700 g/I and contain a peroxygen bleach, is improved by using zeolite MAP instead of zeolite A.
Water-soluble packages containing laundry detergents T. Nehashi; Y. Fujii; Y. Yamaguchi et al. Kao Corp, Jpn. Kokai Tokkyo Koho 93,214,398, Aug. 24, 1993; Appl. Oct. 30, 1991 In laundry detergents packaged in small portions by 10-150 microns water-soluble films, the compositions contain (A) nonionic surfactants 5-80, (B) porous oil-absorbing supports 5-60, and (C) crystalline aluminosilicate salts 10-60% where M/(m x V) ~ 2.0g/cm 3[M = A content, (%); m = Bcontent (%); V = pore volume of B (cm3/g)].
Manufacture of stabilized sodium percarbonate M. Saito; H. Kikuchi; H. Ando et al. Nippon Peroxide Co. Ltd. Jpn. Kokai Tokkyo Koho 93,310,402, Nov. 22, 1993; Appl. May 8, 1992 Sodium percarbonate is coated with aqueous slurries containing 30-90 wt% water and coating materials at least one of each selected from the following two groups: (A) sulfonic acids of aromatic hydrocarbons, sulfuric acid esters of alkyl aromatic hydroxyhydrocarbon-ethylene oxide adducts, sulfuric acid esters of aliphatic higher alcohol, and Mg-, alkali metal-, or Casalts of sulfuric acid esters of aliphatic higher alcohol-ethylene oxide adducts; and (B) alkali metal silicates, carbonates, bicarbonates, and sulfates. The mixing weight ratio of coating materials of the two groups is (A)I(B) = 1/20-20/1, and total coating amount is 0.1-30 wt% (vs. sodium percarbonate). The average diameter of the coating materials in group (B) is 10-500 microns. The sodium percarbonate is used as a bleaching agent of zeolite-blended phosphate-free detergents.
MISCELLANEOUS A P P L I C A T I O N S
DETERGENTS Granular laundry detergent and detergent builder containing no phosphate T. Crutcher; J.D. Sauer; K.R. Smith et al. Ethyl Corp. PCT Int. Appl. 93,12,217, Jun. 24, 1993; U.S. Appl. Dec. 19, 1991 A laundry detergent showing cleaning performance similar to phosphate-containing detergents contains 1-50% zeolite
Colorless methacrylic acid and acrylic acid esters K. Watanabe; M. Narita Kuraray Co. Jpn. Kokai Tokkyo Koho 93,310,637, Nov. 22, 1993; Appl. Apr. 30, 1992 Esters are contacted with zeolites having SiO2/AIO 2 ratio 1:20 optionally modified with alkali metals to remove impurities.
Zeolites 15:181-185, 1995
183