MXPA00002185A - Pesticide dispersant - Google Patents

Abstract

Free-flowing granular dispersing agents for use in water-dispersible granule (WDG) agricultural chemical formulations are a composite substance comprised of an alkyl polyglycoside and a polymeric anionic dispersant. The granular composite dispersing agents can be used in granular or liquid agricultural chemical formulations, exhibit outstanding attrition resistance, excellent dispersional stability after accelerated aging and low moisture content when made into a paste. The composite dispersing agents are useful as primary dispersants in dry agricultural formulations (wettable powders and water-dispersible granules) and in aqueous suspension concentrates.

Description

PESTICIDE DISPERSION BACKGROUND OF THE INVENTION Pesticidal formulations are known in granules that can be dispersed in water (WDG). These formulations are desirable because they avoid the use of potentially toxic solvents and allow the use of easily disposable paper containers or water soluble containers. In addition, such formulations are less dusty than wettable powder formulations. As a result, the potential exposure of people applying pesticides and the general public to the pesticide or solvent is reduced. Dispersible granular pesticidal formulations are typically prepared by mixing a water-insoluble active ingredient, pre-ground, dispersing agents, disintegrating agents and wetting agents in an aqueous suspension. The aqueous mixture is extruded to form granules which are then dried to provide the final product. A herbicidal composition in dispersible granules designed for dispersion in a liquid vehicle should ideally have a high content of active material, should be resistant to mechanical breakdown in the vehicle (powder) and should then form a dispersion. stable possible, requiring a subsequent mini-agitation to maintain homogeneity.

It would be desirable to produce a product with greater wear resistance and therefore less dust formation resulting from normal handling including bagging, transport and loading and which provides good dispersion stability in spray solutions. A product of this type should have improved qualities in terms of less exposure of workers to pesticide-related hazards due to the formation of smaller amounts of dust. SUMMARY OF THE INVENTION It is a broader aspect, the present invention relates to dispersing agents in liquid form or in the form of granules for use in agricultural chemical formulations concentrated in suspension or in granules that can be dispersed therein (WDG) which they are compound substances consisting of an alkyl polyglycoside and a polymeric anionic dispersant. The granular compound dispersing agents are prepared by the joint drying of aqueous mixtures of alkyl polyglycosides and dispersing agents to form a dry, powdery product which provides in significant boxes compared to the conventional wetting and dispersing agents individually added to the pesticidal formulations . The granular compound dispersing agents according to the present invention, which can be used in granular agricultural chemical formulations or in liquid suspension, have excellent wear resistance, excellent dispersion stability after accelerated aging and a low moisture content. when they are formed into a paste. The composite dispersing agents are useful as primary dispersants in dry agricultural formulations (wettable powders and granules which can be dispersed in water) and in aqueous suspension concentrates. Another aspect of the present invention relates to liquid compounds consisting of an alkyl polyglycoside and a polymeric anionic dispersion. DETAILED DESCRIPTION OF THE INVENTION As used herein, the abbreviation APS refers to alkylpolysaccharide which is a generic term for an alkyl polyglycoside. The polymeric anionic dispersant which can be employed in this invention is any polymeric dispersant material having several anionic groups and which can form a compound with an alkyl polyglycoside. Such polymeric anionic substances include, but are not limited to, sulfonated lignins, sulfonated naphthalene-foxmaldehyde condensates, as well as sulfonated polystyrenes. These compounds are described in U.S. Patent No. 4,936,901, the entire contents of which are incorporated herein by reference. The sulfonated lignins, which are also known as lignosulfonates, are described in U.S. Patent No. 3,986,979, the entire contents of which are incorporated herein by reference. One of the main sources of lignins is the paper and pulp industry where lignocellulosic materials such as wood, straw, stems, bagasse, and the like are processed to separate cellulose or pulp from lignin. When lignin is obtained from the kraft or sulphate pulping processes, it must be sulfonated before its use as a dispersing agent. For example, lignin products obtained in an alkaline or neutral digestion process of lignocellulosic materials can be easily sulphonated by reaction with a bisulfite or sulfite. In other pulp formation processes, such as the sulfite process, lignin is solubilized by sulfonation and is therefore separated from the cellulose by dissolution in the liquor used and is present in this liquor as lignosulfonate. Any of the sulfonated lignin materials described above can be used to produce the dispersing agent of the present invention. The degree of refinement to which these sulfonated lignin materials are subjected will depend on the quality of the product desired and the economic factors involved. That is, refining will improve to some extent the properties of the final processed product by the degree of improvement will not always be justifiable from an economic perspective. Even when sulfonated lignins are contemplated from all sources, sulfonated lignins made from alkaline lignin are preferred. Particularly preferred are the alkali metal salts of alkaline lignin, particularly sodium sulfonated lignin. Even though sodium sulfonated lignin is preferred, chemically modified sulfonated lignins may be employed. These lignins are commercially available, for example, in Westvaco under the trade names REAX®, POLYFON®, and KRAFTSPERSE®, or in Lignotech USA under the trademarks BBORRESPERSE®, ULTRAZINE®, UFOXANE®, MARASPERSE®, and DIWATEX ® or at Witco under the brand name MOREWET®. Sulfonated naphthalene-formaldehyde condensates are described in U.S. Patent No. 4,936,901, column 16, line 67 to column 17, line 21. Sulfonated polystyrenes are described in U.S. Patent No. 4,936,901, column 17, lines 22-40.

The dry powder or granular compositions composed in accordance with the present invention can be made by mixing the components in solution together and drying. Typically, the process for making the compounds comprises the mixture of aqueous polymeric anionic dispersants and alkyl polyglycosides together at a temperature in the range of about 165 ° F to about 185 ° F, primarily to adjust the viscosity control of the product fed with the object of optimizing the uniformity of the spray pattern. Typically, the sample is then allowed to stand for a sufficient time to ensure complete dissolution of the alkyl polyglycoside in the solution. Any conventional drying method can be employed. For example, spray drying, air-pressure drying, oven drying, drum drying, and lyophilization are preferred, with spray drying being especially preferred. Spray drying is preferred and the necessary parameters are well known to those skilled in the art, however, particularly useful products can be spray dried at an air inlet temperature of 200 to 900 ° F, and exhaust air within a range of 155 to 400 ° F. The aqueous mixture of humidifying agent and disperser is normally diluted and / or heated to easily handle the viscosity before spray drying, ie, a content of .30 to 45% solids. The ratio between the alkyl polyglycoside and the polymeric anionic dispersion can be any required ratio and depends on the particular pesticide contemplated and whether the compound is in the form of a dry powder or in a liquid form. Preferably, the weight ratio (based on dry solids) between the alkyl polyglycoside and the polymeric anionic disperser can be from about 1: 9 to about 9:11 and more preferably is from about 1: 4 to about 7:13 in the case of dry powder form. This corresponds to a weight percentage of alkyl polyglycoside of from about 10% to about 45% in the preferred embodiment and from about 20% to about 35% in the most preferred embodiment. A particularly preferred composition consists of an alkyl polyglycoside and a sulfonated lignin in a weight ratio between the alkyl polyglycoside and the sulfonated lignin of about 1: 3. Preferably, the upper limit of 45% by weight of alkyl polyglycoside is used to prepare dry powder compounds according to the present invention wherein the polymeric anionic dispersant is sulfonated lignin. Larger amounts of alkyl polyglycoside can interfere with the efficient manufacture of said dry powder compounds in drying operations, particularly in the case of spray drying. In the case of liquid compounds, any ratio between the alkyl polyglycoside and the sulfonated water soluble lignin can be employed as desired and depends on the particular pesticide contemplated. In the case of liquid compounds, the amount of alkyl polyglycoside can exceed 45% by weight of the compound. The alkyl polyglycosides which can be employed in the invention have the formula I R? (R20) b (Z) a I wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkylene radical having from about 2 to about 4 carbon atoms; Z is a saccharin residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value from 1 to about 6. Preferred alkyl polyglycosides that can be employed in the compositions according to the present invention have the formula I wherein Z is a glucose residue and b is zero. Such alkyl polyglycosides are commercially available, for example, as surfactants APG®, GLUCOPON®, PLANTAREN®, or AGRIMUL® from Henkel Corporation, A bler, PA, 19002. Examples of surfactants of this type include, but are not limited to: 1. GLUCOPON® 220 surfactant - an alkyl polyglycoside in which the alkyl group contains from 8 to 10 carbon atoms and which has an average degree of polymerization of 1.5. 2. GLUCOPON® 225 Surfactant - an alkyl polyglycoside in which the alkyl group contains 8 to 10 carbon atoms and which has an average degree of polymerization of 1.7. 3. GLUCOPON® 600 Surfactant - an alkyl polyglycoside in which the alkyl group contains from 12 to 16 carbon atoms and which has an average degree of polymerization of 1.4. 4. GLUCOPON® 625 Surfactant - an alkyl polyglycoside in which the alkyl group contains from 12 to 16 carbon atoms and which has an average degree of polymerization of 1.4. 5. Surfactant APG® 325 - an alkyl polyglycoside in which the alkyl group contains from 9 to 11 carbon atoms and which has an average degree of polymerization of 1.6. 6. Surfactant PLANTAREN® 2000 - an alkyl polyglycoside in which the alkyl group contains from 8 to 16 carbon atoms and which has a degree of average polymerization of 1.4. 7. Surfactant PLANTAREN® 1300 - an alkyl polyglycoside in which the alkyl group contains from 12 to 16 carbon atoms and which has a degree of average polymerization of 1.6 8. AGRIMUL® PG 2067 surfactant - an alkyl polyglycoside in which an alkyl group It contains 8 to 10 carbon atoms and has an average degree of polymerization of 1.7. 9. AGRIMUL® PG 2076 Surfactant - an alkyl polyglycoside in which the alkyl group contains from 8 to 10 carbon atoms and which has an average degree of polymerization of 1.5. Other examples include alkylpolyglycoside surfactant compositions consisting of mixtures of compounds of formula I in accordance with that described in U.S. Patent Nos. 5,266,690 and 5,449,763, the entire contents of which are incorporated herein by reference. Extruded WDGs can be prepared in a Benchtop Granula or Luwa using a mesh of 0.8 mm and setting the engine speed to approximately half scale, with small adjustments to compensate variations in the rheology of the pulp, using slower speeds for more pulps thick. The granulated WDGs in trays can be prepared using a rotating tray with a diameter of 15 inches. The precise conditions required to produce granules by any of the methods can be determined for each combination of pesticide, dispersant and other formulation components to minimize the proportion of material with excessive size and too small size. This can be easily established by a person skilled in the art by visual observation of the sizes of the granules. The compounds according to the invention, both granular and liquid, can be used in any type of agricultural formulation examples including, but not limited to, formulations containing biologically active substances such as insecticides, nematocides, fungicides, miticides, herbicides, and growth regulators such as those described in U.S. Patent 5,559,078. The compounds according to the present invention are employed as a dispersant in a pesticidal formulation in an amount effective to emulsify the biologically active ingredient. Typically, the weight percentage (on a dry solid basis) of the compounds according to the present invention in pesticidal formulations can be from about 2% to about 99% and preferably is from about 4% to about 16%. The formulations may contain other surfactants including nonionic, anionic, cationic, amphoteric surfactants and combinations thereof as well as inert filters and the like. When used in WDG formulations, the compounds according to the present invention provide superior wear resistance while achieving good disintegration rates, maintain excellent dispersion stability after accelerated aging, allow the production of granules with higher bulk densities, which promotes free flow of the final granulated products and, in many cases, reduces the moisture content in the extrusion paste, formulations prepared with the composite disperser system typically exhibit improved performance as compared to equivalent formulations on the other hand by the addition of the alkyl polyglycoside and the polymeric anionic dispersants as separate components. The dry powder form of the compound according to the present invention offers a water-free surfactant that facilitates dry mixing and milling to make wettable powders and WDG premixes. The liquid dispersant form of the compound according to the present invention can be added to premixed WDG products or liquid formulations containing insoluble suspended solids (including formulation types illustrated as flowable aqueous products, emulsion concentrates, or suspending emulsions). The following examples are intended to illustrate the invention but not to limit it. EXAMPLE 1 A mixture was prepared by mixing 300 g of AGRIMUL® PG 2069 (in the form of a liquid containing 50% solid in water) at a temperature of 40 ° C with 700 g of REAX® 100 M (in the form of a liquid containing 40% water) at a temperature of 40 ° C and with manual agitation for 2 minutes to obtain a homogenous mixture. In the following 3 days, the mixture was left untouched and allowed to equilibrate at room temperature. During this time, the mixture remained homogeneous and no evidence of any chemical reaction or physical separation was observed. The mixture was spray-dried, in accordance with the conditions presented in Example 1 of US Pat. No. 3,986,979. The resulting solid was free flowing powder which was completely dissolved in water at a temperature of 18 ° C: EXAMPLE 2 A mixture was prepared by the addition of 7.8 kg of AGRIMUL® PG 2076 (in the form of a liquid containing 60% of solids in water) at a temperature of 35 ° C with 42.2 Kg of REAX® 85A (in the form of a liquid containing 26% solids in water) at a temperature of 35 ° C, and stirred manually for 2 minutes to achieve a homogeneous mixture. A sufficient amount of concentrated sulfuric acid was then added while stirring in such a way that the pH could be adjusted to 8.5 and the mixture was allowed to equilibrate at room temperature for 2 days. The liquid mixture was spray dried to provide a free-flowing powder that was completely dissolved in water at a temperature of 21 ° C. EXAMPLE 3 The procedure of Example 2 was repeated except that 11.1 Kg of AGRIMUL® PG 2069 and 38.9 Kg of REAX® 88B were used. This mixture was acidified to a pH of 8.5 by the addition of sulfuric acid. The solid was spray dried and observed to have a free flow and totally dissolved in water at a temperature of 21 ° C. EXAMPLE 4 A set of wettable powders was prepared according to the following procedure to evaluate the effect of several dispersants (a-d) in a prototypical formulation.

For each formulation, the four components were previously mixed manually and then the mixture was passed through a 4 inch air mill to produce a wettable powder. % by weight Component 84.2% Chlorothalonil (95%) 8.0% Disperser (see table below) 1.0% SELLOGEN® W 6.8% ATTACOTE® LVM SELLOGEN (r) W is a trademark of Henkel Corporation and is an alkylnaphthalene sulfonate. ATTACOTE®LVM is a trademark of Engelhard Corporation and is an attapulgite clay. Chlorothalonil (tetrachloroisophthalonite) is manufactured by several companies and sold, for example, as a technical grade fungicide of 95-97% under the trade name DACONIL® by ISK Biosciences. The following dispersers were used in the previous formulation. Dispersant formulation to REAX® 85A (as a solid at 100%) b solid from Example 2 c REAX®88B (as a solid at 100%) d solid from Example 3 The wetting time was evaluated for each wettable powder as follows . 5.0 grams of powder are quickly stained on the surface of 100 mL of water (containing 500 ppm hardness) in a 250 mL cuvette, distributing the powder on the surface as quickly and as regularly as possible. A timer was used to measure the time required to fully humidify the powder. Formulation of humidification time (seconds) at 3420 b 86 c 1500 d 57 EXAMPLE 5 The following procedure was used to measure the wear of the WDGs described herein. In a 100 mL round glass bottle were added 5 grams of WDG and 20 grams of high density alumina pellets of 5 ni. The bottle was rotated in a Turbolator mixer (Glen Mills Inc., Clitton, NJ) for 2 minutes. Wear was calculated as the percentage by weight of mechanical breakage of the granules that passed through a U.S. Standard with openings of 400 microns. EXAMPLE 6 Wettable powders were prepared in accordance with that described in Example 4, except that the disperser was used at 12%, SELLOGEN® W was used at 3% and 1% sodium sulfate was used instead of ATTACOTE® LVM. The wettable powders were converted into extruded WDGs by (1) spraying a fine mist of water onto the powder contained in a round one-quarter container while rotating the container manually until the powder was transformed into a uniformly moistened paste, (2) extruding the paste through a 0.8 mm mesh to provide extruded granules typically 2 to 4 mm in length, and (3) drying the extruded product in a fluid bed dryer and for about one hour at a temperature of 45 ° C, which provided granules containing 1-2% moisture. The dispersion capacity was measured by the number of complete inversions required to fully disperse 1.25 g of test material in 250 mL of standard hardness water contained in a 250 mL graduated cylinder. The suspension capacity was measured in accordance with CIPAC MT 15.1 in water of standard hardness at 25 +/- 1 ° C. The term "paste" refers to the mixture of extrudable powder that is obtained by spraying water in a wettable powder. Percent moisture in the pulp that can be extruded was determined by weighing the container containing the wettable powder before and after additions of water, and then dividing the weight of the water added by the * iP ^ / * weight of the wet mix that can be excluded and multiplied by 100%. The granular bulk density was determined as the apparent densities of loose packed material. Specifically, 10 grams of material was emptied into a 100 mL graduated cylinder and the volume was measured. Bulk density in pounds per cubic foot was calculated as 624 divided by this measured volume. The granules presented properties that are summarized in the following tables. TABLE 1 DISPERSER GRANULAR PASTE (density WEAR (% H20) in bulk; lbs / ft3) (% <400 MICRAS) t = 0 t = 1 month at 54 ° C LLS 10.3 88.0 65 55 APS + LLS (liquid) 11.5 40.8 0.1 APS + LLS (dry) 7.5 39.0 0.2 0.1 HLS 15.9 44.0 2 5 APS + HLS (liquid) 14.6 48.0 0.5 APS + HLS (dry) 10.6 44.6 MOREWET® D- 425 10.5 40.0 33 36 KRAFTSPERESE® EDF-350 12.5 37.0 28 12 POLYFON®F 10.5 31.0 74 78 LLS = REAX® 88B (lower molecular weight LS) 5 HLS = REAX® 85A (higher molecular weight LS) APS = AGRIMUL®PG 2076 APS + LLS (liquid) - APS and LLS were added to the mixture previous WDG as liquid mixture APS + LLS (dry) - APS and LLS were added to the pre-mix of 0 WDG as a spray-dried solid. APS + HLS (liquid) - APS and HLS were added to the pre-mix of WDG in the form of a liquid mixture APS + LLS (dry) - APS and LLS were added to the previous mixture of WDG in the form of a spray-dried solid 5 TABLE 2 DISPERSER CAPACITY OF CAPACITY OF CAPACITY OF SUSPENSION SUSPENSION DISPERSION (342 PPM) (342 PPM) (1000 PPM) t = 1 month t = 1 month t = 1 month 0 t = 0 @ 54 ° C t = 0 @ 54 ° C t = 0 @ 54 ° C LLS 11 12 82 81 80 80 APS + LLS (liquid) 11 12 84 83 83 81 APS + LLS (dry) 81 72 78 80 T ^ &^ Jrt S: '-JSyt-.5g? S £ &S'-,' ~ "-. ^ Q.'r.-'- '^' ^ - ai ^^^ HLS 16 14 85 64 81 53 APS + HLS (liquid) 13 15 84 83 81 85 APS + HLS (dry) 5 6 87 79 81 76 MOREWET® D-425 16 14 63 68 51 65 KRAFTSPERSE® EDF-350 7 8 80 78 79 76 POLYPHON ® 5 3 90 85 85 46 LLS = REAX® 88 (one LS of lower molecular weight) HLS = REAX® 85A (one LS of higher molecular weight) APS = AGRIMUL®PG 2076 APS + LLS (liquid) - APS and LLS were added to the pre-mix WDG as liquid mixture APS + LLS (dry) - APS and LLS were added to the pre-mix WDG as spray-dried solid APS + HLS (liquid) - APS and HLS were added to the pre-mix of WDG in the form of a liquid mixture APS + LLS (dry) - APS and LLS were added to the pre-mix WDG in the form of a spray-dried solid EXAMPLE 7 A series of extruded granules was made in accordance with that indicated in Example 6 except that the technical chlorothalonil was milled in air to obtain a size of -yyr ixzxzx? ^ xx ^ xxx 'smaller particles (average diameter = 19 microns, compared to an average diameter of 28 microns for the compositions used in examples 4 and 5), and the amount of compound disperser varied, using sulphate of sodium as an adjustable filler. As summarized in the following table, the dispersional stability was determined by measuring the initial suspension capacity (t = 0). What it means within 24 hours of drying the granules, and after one month (t = l) of accelerated aging to a temperature of 5 ° C. Entries under "S" are percentages by weight of SELLOGEN® W in the formulations and entries marked "SS" are for percentages by weight of anhydrous sodium sulfate. Disp (c) S SS t = 0 t = l 15 4% 3 9 96 20 6% 3 7 94 51 12% 3 1 99 94 Disp (c) is APS + LLS (dry) Disp (d) is APS + HLS (dry) EXAMPLE 8 A concentrated aqueous solution of sodium lignosulfate (CAS 8061-51-6) sold by Westvaco under the trade name KRAFTSPERSE® EDF-750, a neutral pH dispersant / disintegrant based on a high degree of sulfonation, a low molecular weight kraft lignin was mixed with the AGRIMUL® PG 2067 surfactant. The pH of the solution was adjusted to approximately 7.0 by the addition of sulfuric acid. Then, the mixture was dried by spraying. After spray drying, the composite spray-dried disperser contained (on a dry weight basis) 85 to 90% sodium lignosulfonate and 10 to 15% alkyl polyglycoside. Thus, the ratio between the alkyl polyglycoside and the lignosulfonate in this mixture falls within the range of 1: 9 (10% alkyl polyglycoside) to 15:85 (15% alkyl polyglycoside). EXAMPLE 9 The procedure of Example 3 was repeated where 11. kg of AGRIMUL® PG 2069 and 38.9 kg of REAX® 88B were used. However, this mixture was acidified to a pH of 4.5 by the addition of sulfuric acid. After spray drying, the composite spray-dried disperser contained (on a dry weight basis) about 85% sodium lignosulfonate and about 25% alkyl polyglycoside. The spray-dried solid flowed freely and completely dissolved in water at a temperature of 21 ° C.

Claims (28)

1. CLAIMS 1. A composite dispersion agent comprising an alkylpolyglycoside and a polymeric anionic dispersant.
2. 2. The composite dispersion agent according to claim 1 wherein the weight ratio between alkyl polyglycoside and polymeric anionic dispersion is from about 1: 9 to about 9:11.
3. 3. The composite dispersion agent according to claim 2 wherein the weight ratio between the alkyl polyglycoside and the polymeric anionic dispersion is from about 1: 4 to about 7:13.
4. 4. The compound according to claim 1 wherein the polymeric anionic dispersant is a sulfonated lignin.
5. 5. The compound according to claim 1 further comprising a nonionic, anionic, cationic or amphoteric surfactant or a combination thereof.
6. 6. The compound according to claim 5 wherein the anionic surfactant is a naphthalene sulfonate.
7. 7. The compound according to claim 1 wherein the alkyl polyglycoside is a compound of the formula I R? O (R20) b (Z) a I wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkylene radical having ^? about 2 to about 4 carbon atoms; Z is a saccharin residue having 5 or 6 carbon atoms; b is a number that has a value from 0 to approximately 12; a is a number having an value from 1 to approximately 6. The compound according to claim 7 wherein Ri is an alkyl group having from about 8 to about 10 carbon atoms and a is a number equal to about 1.5. 9. A compound dispersion agent comprising an alkyl polyglycoside of the formula I wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number that has a value of 1 to about 6 and a sulfonated lignin. The compound according to claim 9 wherein the weight ratio between the alkyl polyglycoside and the sulfonated lignin is from about 1: 9 to about 9:11. The composite dispersion agent according to claim 10 wherein the weight ratio between the alkyl polyglycoside and the sulfonated lignin is from about 1: 4 to about 7:13. 12. The composite dispersion agent according to claim 11 wherein the weight ratio between the alkyl polyglycoside and the sulfonated lignin is about 1: 3. 13. A composition comprising a pesticide and an effective amount of a compound dispersing agent comprising an alkyl polyglycoside and a polymeric anionic dispersant. The composition according to claim 13 wherein the weight ratio between alkyl polyglycoside and the polymeric anionic dispersant is from about 1: 9 to about 9:11. 15. The composition according to claim 14 wherein the weight ratio between the alkyl polyglycoside and the polymeric anionic dispersion is from about 1: 4 to about 7:13. 16. The composition according to claim 13 wherein the polymeric anionic dispersant is a sulfonated lignin. The composition according to claim 13 which further comprises a nonionic, anionic, cationic, or amphoteric surfactant or a combination thereof. 1
8. 8. The compound according to claim 5 wherein the anionic surfactant is a naphthalene sulfonate. 1
9. 9. The composition according to claim 13 wherein the alkyl polyglycoside is a compound of the formula I R? O (R20) b (Z) a I wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value from 1 to about 6. The composition according to claim 19 wherein Ri is an alkyl group having from about 8 to about 10 carbon atoms and a is a number equal to about 1.5. 21. The process product comprising the formation of a mixture by mixing aqueous solutions of an alkyl polyglycoside and a polymeric anionic dispersion and drying the mixture. 22. The product according to claim 21 wherein the weight ratio between the alkyl polyglycoside and the polymeric anionic dispersion is from about 1: 9 to about 9:11. The product according to claim 22 wherein the weight ratio between the alkyl polyglycoside and the poiy-peric anionic dispersant is from about 1: 4 to about 7:13. 24. The product according to claim 21 wherein the polymeric anionic dispersant is a sulfonated lignin. 25. The product according to claim 21 further comprising a nonionic, anionic, cationic or amphoteric surfactant or a combination thereof. 26. The product according to claim 25, wherein the anionic surfactant is a naphthalene sulfonate. 27. The product according to claim 21 wherein the alkyl polyglycoside is a compound of the formula I R? O (R20) b (Z) to I wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value from 1 to approximately 6. 28. The product according to claim 27 y- -: < < .- and y- * -; • where Ri is an alkyl group having from about 8 to about 10 carbon atoms and a is a number equal to about 1.5. - 'fu ~' ", ',;'., '. T., - A' '' .--" i " -X3t¿