Nitrogen adsorption with a divalent cation-exchanged Li X zeolite
S t a b i l i z a t i o n of p e r b o r e t e bleach in zeolite-containing d e t e r g e n t compositions A.P. Chapple Unilever PLC; Unilever IV. V, Eur. Pat. Appl. 552,053, Jul. 21, 1993; UK Appl. Jan. 17, 1992 The storage stability of Na perborate monohydrate in the title compositions, which have bulk d > 700 g/L, is increased by using zeolite MAP instead of zeolite A.
C.G. Coe; J.F. Kirner; R. Pierantozzi et at. Air Products and Chemicals, Inc. U.S. 5,258,058, Nov. 2, 1993; Appl. Oct. 5, 1992
Spray-dried granules containing alpha-sulfo fatty acid alkyl ester
Zn, Ce, Pr, or La. The catalysts have high activity from the stoichiometric range to the lean range of the gases.
N 2 is adsorbed from a gas mixture containing N2 and less strongly adsorbed components such as 02, H2, Ar, or He using a zeolite. The zeolite is a binary exchanged X-zeolite having Li and a divalent cation selected from Ba, Co, Cu, Cr, Fe, Mg, Mn, Ni, Zn, and their mixture in a ratio of 5-50% divalent cation and 50-95% Li. The binary ion-exchanged X-zeolites exhibit higher N2 capacity and N/O selectivity than the Li X-zeolite in the prior art.
Method for removal of alkyltetralin from linear alkylbenzenes S. Aoki; T. Kato; H. Taniguchi et al. Bisuta Chem. Co. Nippon Kokan Kk Jpn. Kokai Tokkyo Koho 93,221,885, Aug. 31, 1993; Appl. Feb. 13, 1992 The method involves contacting a mixture of linear alkylbenzenes (I) and alkyltetralin (11)with an adsorbent having separation coefficient alpha 1>2. Separation coefficient alpha = alkyltetralin equilibrium constant linear/alkylbenzene equilibrium constant. II is selectively adsorbed by the adsorbent. I are intermediates for surfactants. A mixture of I and II was treated with NaY-type zeolite to give pure I with 95% recovery.
W. Welter; D. Jung; A. Pastura Henkel K.-G.a.A. Ger. Often. 4,141,584, Jun. 24, 1993; Appl. Dec. 17, 1991 Free-flowing granules containing 10-40% alpha-sulfo fatty acid alkyl ester or its mixture with ~>1 other sulfate or sulfonate surfactant, 10-50% builder zeolite, ~<45% inorganic salt, <3% water, and no alkaline compounds, are prepared by spray drying. The ester shows good resistance to hydrolysis during storage of the granules which are resistant to caking and useful in detergent compositions. S t a b l e a q u e o u s s u s p e n s i o n s of z e o l i t e which can be pumped easily P, Colombo; P.D. Mattioli; L. Valtorta et al. Enichem Augusta Industriale S.r.I. Eur. Pat. Appl. 522,365, Jan. 13, 1993; IT Appl. Jul. 1, 1991 The title suspensions, useful in detergent manufacture, contain 0.5-65% zeolite 4A and 0.05-6 g (per 100 g of zeolite) suspending agent prepared by ethoxylating biodegradable Clo-18 alkanols having one branch in position 2 and containing t>2 alkanols having a different no. of C atoms, or ethoxylating a mixture of t>40% of the branched alkanols and ~<60%linear Clo-~e alkanols.
Powdered detergent composition containing nonionic Removing light alcohols from gas streams H. Rastelli UOP Inc. U.S. 5,256,173, Oct. 26, 1993; Appl. Mar. 19, 1993 Light aliphatic alcohols are removed from waste gas streams by selective adsorption using a fixed bed containing a high-silica macroporous zeolite. The waste gas contains 1-10,000 ppm of the alcohol and a relative humidity of ~>10%. The improvement to the process comprises using a bonded agglomerate adsorbent prepared by calcining a green form of the agglomerate comprising water, an inorganic oxide matrix and the zeolite in its as-synthesized form to set the binder and activate the zeolite.
Adsorbents for selective adsorption of m-ethyl phenol S, Inoe; Y. Mifuji; S. Nagae Kobe Steel Ltd. Jpn. Kokai Tokkyo Koho 93,253,476, Oct. 5, 1993; Appl. Mar. 10, 1992 The title adsorbents are X-type zeolites having K+/Na + ratio 1-8, and containing 10-20 wt% 1-120.They are used for separation of p-Et phenol from m-Et phenol.
DETERGENTS Granular detergent composition by spray cooling of a slurry F.L.G. Hsu; C.F. Irwin Unilever N. V.; Unilever PLC Eur. Pat. Appl. 550,086, Jul. 7, 1993; US Appl. Dec. 31, 1991 A granular detergent composition is prepared by mixing a carrier component containing 5-95% surfactant (e.g., Na alkylbenzenesulfonate) with zeolite 4A to form a sprayable slurry and solidifying the slurry into granules by spray cooling.
surfactant absorbed by a carrier M. Kuroda; Y. Sakamoto; Y. Otani Kao Corp. Eur. Pat. Appl. 560,395, Sept. 15, 1993; JP Appl. Mar. 12, 1992 A nonionic surfactant m ~< 40° is sprayed onto a powder comprising a mixture of a crystalline layer silicate (e.g., Na-SKS-6) and an oil-absorbing carrier such as silica, giving a material which is mixed with other particulate detergent components to give a composition showing no bleeding of the nonionic surfactant during storage, no decrease in solubility during storage, and good detergency against fatty soil. G r a n u l a t e s consisting of aluminosilicetes and layered sodium silicates, t h e i r manufacture and use A. Tapper; G. Schimmel; G. Wingefeld et al. Hoechst A.-G. Ger. Often. 4,210,253, Sept. 30, 1993; Appl.-Mar. 28, 1992 These high-d granules, which readily disintegrate in water into their primary particles, contain AI silicates having general formula M~j,O • AI203 • xSiO 2 • yH20 (M = alkali or alkaline earth metal; n = valence of the cation; x ~> 2; y = 0-8) and Na silicates having SiO2/Na20 ratio (1.8-4.2):1. The granules are manufactured by mixing powdered aluminosilicates with Na silicates, introducing the mixture into, and compacting the mixture in, a zone formed by the space between 2 counter-rotating rolls, comminuting the compacted material, and classifying the material by separating the desired size from under- and over-sized granules. The granules are useful as builders in detergents and cleaning compositions. S t a b i l i z a t i o n of a q u e o u s z e o l i t e s u s p e n s i o n s b y e t h o x y leted alcohols D. Kischkei; K. Schmid; A. Syldath et al. Henkel K,-G.a.A, Ger. Often. 4,203,789, Aug. 12, 1993; Appl. Feb. 10, 1992 Zeolite suspensions showing good stability over a range of temperatures contain dispersants RO(CH2CH20)nH (I; R = C12-1e
Zeolites 15:83-87, 1995