Patent Report
Zeolitic para-xylene separation
Expanded polystyrene products with sterilising power
H.A. Zinnen UOP Inc." U.S. 4,886,930, Dec. 12, 1989; Appl. May. 23, 1988
N. Kobayashi Jpn Kokai Tokkyo Koho 89,252,641, Oct. 9, 1989; Appl. Apr. 1, 1988 The sterilizing power is imparted to the title products by mixing with 1-30% zeolites containing Ag ions during the prefoaming stage. The products are useful as food containers.
A chromatographic process able to separate p-xylene (I) from C8 isomers and C9 aromatics involves contacting the mixtures with an X or Y zeolite having Group IA or IIA cations at exchangeable cationic sites to effect the selective adsorption of I, removing the nonadsorbed feed, and recovering, I by desorption with tetralin.
DETERGENTS [Hydroxyethyl]imidazoline derivatives as antistatic agents in laundry detergents P.M. Lambert; M.J. Gillis; A.M. Gourgue et al. Colgate-Palmolive Co. Eur. Pat. Appl. 351,769, Jan. 24, 1990; U.S. Appl. July 22, 1988 2-(C8-24 alkyl or alkylaryl)-l-(2-hydroxyethyl)-lH-imidazolines are used in detergents to impart softness and antistatic properties to laundried fabrics. In the preparation of a zeolite-containing crutcher mix for spray drying, the zeolite is added followed in turn by NasP30~0 and the imidazoline derivative to inhibit reaction between the imidazoline and zeolite.
Far infrared-emitting fine powder composition T. Ota Jpn Kokai Tokkyo Koho 89,308,484, Dec. 13, 1989; Appl. ,June 6, 1988 The title composition comprises a ceramic fine powder material capable of emitting far-IR (8-12 microns range) and a zeolite fine powder material. Application in processing and preservation of foodstuffs is indicated.
Agents for disinfection of swimming pool water M. Arita Asahi Kanko Co. Ltd. Jpn Kokai Tokkyo Koho 89~130,784, May 23, 1989, Appl. Nov. 14, 1987 The title agents are prepared by loading CuO on a porous zeolite support.
Stable aqueous suspensions for use in detergents P.D. Mattiolo; A. Tentorio; C. Troglia Ausidet S.p.A. Eur. Pat. Appl. 352,358, Jan. 31, 1990; Appl. July 29, 1988 Stable aqueous suspensions of water-insoluble crystalline zeolites (e.g., zeolite A), having low viscosity and good pumpability, are stabilized by OH-containing polymers and quaternary ammonium or phosphonium surfactants.
MISCELLANEOUS APPLICATIONS Electrolysis of solutions in zeolite granules G. Sato Jpn Kokai Tokkyo Koho 89,135,586, May 29, 1989; Appl. June 27, 1987 Solutions are electrolyzed by using electrodes embedded in zeolite granules. A device for electrolytic treatment of wastewater contains C electrodes embedded in heat treated zeolite granules. The use of zeolite increases the efficiency of electrolysis and improves the removal of soluble materials by adsorption.
The use of zeolites to disinfect aqueous liquids H.J. Grebe; R. Lehmann; W. Fanenbruck Henkel K.-G.a.A. Ger. Often. 3,826,896, Feb. 15, 1990; Appl. Aug. 8, 1988 Finely divided Na zeolite is mixed with finely divided Ca(OH)2 in a (20-5): 1 wt. ratio and suspended in distilled water. The suspension, which may also be treated with ultrasound to improve dispersion, is used to remove bacteria and/or yeasts from contaminated water. The amounts used are 0.01-0.1 wt.% of the water to be treated.
Tritium storage containers H. Yanai; F. Matsuda; Y. Horii Kobe Steel Ltd. Jpn Kokai Tokkyo Koho 89,170,897, July 5, 1989; Appl. Dec. 25, 1987 A T-storage container comprises a first inner container housing T and a second container housing the first container. The gap between the first and second containers is filled with a catalyst (e.g., Pd) that can oxidize T to T20 at normal temperature, and a zeolite to adsorb T20 for removal. The container has an excellent T-sealing effect.
Adsorbent for removal of bacteria O. Itabashi; T. Goto Agency of Industrial Sciences and Technology Jpn Kokai Tokkyo Koho 89,258,609, Oct. 16, 1989; Appl. Apr. 8, 1988 Zeolite particles were coated with 4-vinylpyridine-divinylbenzene copolymer that was quaternized with benzyl bromide to form an adsorbent for bacteria removal.
Bactericidal antifogging agents useful for coatings on food-packaging materials T. Miyake; T. Y a m a m o t o ; Y. Kurihara Chugoku Pearl Hanbai Co. Ltd.; Shinanen New Ceramic K.K. Jpn Kokai Tokkyo Koho 90,18,491, Jan. 22, 1990; Appl. July 6, 1988 The title agents contain sucrose fatty esters and aluminosilicates (e.g., zeolite A) containing 0.5-5% ion-exchanged ammonium ions and 0.01-15% bactericidal metal ions (e.g., Ag and/or Zn).
PATENTS RECEIVED BUT NOT ABSTRACTED Hydrocracking process employing low acidity Y zeolite
Food preservatives containing antibacterial aluminosilicates
K.Z. Steigleder UOP Inc. U.S. 4,894,142, Jan. 16, 1990; Appl. Sept. 9, 1985
T. Yamamoto; S. Uchida; Y. Kurihara et al. Shinagawa Refractories Co. Ltd.; Shinanen New Ceramic K.K. Jpn Kokai Tokkyo Koho 89,304,871, Dec. 8, 1989; Appl. June 3, 1988
Fluorine-treated dealuminated Y-type zeolites for dehydration Oligomerization of lower olefins to distillate under low severity in a fluid-bed of a medium pore zeolite catalyst with tailored activity A.A. Avidan; D.L. Johnson Mobil Oil Corp. U.S. 4,873,385, Oct. 10, 1989; Appl. Jan. 23, 1987 Cont.-in-part of U.S. 4,746,762
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Y. Kiso; T. Takai; T. Hayashi et al. Mitsui Petrochemical Industries Ltd. Jpn Kokai Tokkyo Koho 89,257,122, Oct. 13, 1989; Appl. Apr. 5, 1988
Dehydration of decenynols over zeolite catalysts M. Hesse; R. Becker BASF A.-G. Ger. Offen. 3,816,576, Nov. 16, 1989; Appl. May 14, 1988