CA1037658A - Aerosol spray starch formulation - Google Patents

Abstract

ABSTRACT

An aqueous starch formulation which has improved fabric penetrating power and improved anti-flaking characteristics containing, in addition to the starch component, a polyhydric material, nonionic surfactant, borax and boric acid.

Description

~3~6S8 The present invention relates to starch formulations of the type typicall~ used by the housewife in finishing home laundered textile garments.
More specifically, the invention provides a starch formulation suitable for spraying from an aerosol container, which formulation has improved fabric penetrating power and improved anti-flaking characteristics.
In the past certain aerosol starch formulations have had a tendency to cause a treated fabric to become unsightly. Apparently, this has been due to the tendency of the formulation to build up deposits on a sole plate of the iron. Upon continued ironing, these deposits would scorch and transfer to the fabric being ironed, leaving portions of the fabric with a blackened appearance.
The present invention is directed to a new spray starch formulation with a substantially reduced tendency to build up deposits on the sole plate of an iron. In this way the fabric discoloration problem of the prior art is practically eliminated. The improvement is accomplished by using an aqueous, starch containing solution or dispersion which includes, in addition to the starch component, a boric acid-borax buffering system, a nonionic-surfactant and a polyhydric compound as set forth hereinbelow.
According to the present invention, there is provided an aerosol starch formulation for use in finishing laundered textile garments comprising from about 2 to about 10 parts by weight of a liquefied normally gaseous pro-pellent and from about 98 to about 90 parts by weight of an aqueous starch composition comprising at least about 85 percent by weight of water, from about 2 to about 6 percent by weight of starchJ said starch being present as a solution or dispersion, from about 0.05 to about 1.0 percent by weight of a polyhydric material selected from the group of polymeric glycols of alkanes and olefins having from 2 to about 6 carbon atoms, from about 0.01 to about 0.5 percent by weight of a nonionic surfactant selected from the group consist-ing of condensation products of an organic aliphatic or alkyl aromatic hydro-phobic compound and a hydrophilic group comprising ethylene oxide, water-soluble salts of derivatives of aliphatic amines which contain at least one cationic group, one alkyl group of 8 to 18 carbon atoms and an anionlc water-~LQ371~
solublizing carboxyl, sulfo, sulfato, phosphato, or phosphono group in their molecular structure, zwitterionic detergents having the structural formula

2 \ ~
R _ N R4 X - 0

3 0 wherein R is an alkyl group containing about 10 to L8 carbon atoms, R2 and R3 are each Cl to C3 alkyl, R4 is an alkylene or hydroxy alkylene group contain-ing 1 to 4 carbon atoms and X is C or S:0 and polar nonionic detergents of the formula Rl R2 R Y~ 0 wherein Rl is an alkyl, alkenyl or monohydroxyalkyl radical having about 10 to 20 carbon atoms, R2 and R3 are each selected rom the group consisting oE
methyl, ethyl, propyl, ethanol and propanol radicals and Y is N or P, from about 0.05 to about 0.15 percent by weight of boric acid and from about 0.2 to about 0.6 percent by weight of borax, the weight ratio of borax to boric acid being from about 5:1 to about 3:1, said formulation having a substantially reduced tendency of flake when applied onto fabric which is then ironed.
An aqueous solution or dispersion of any type of starch, e.g. those derived from corn, wheat, rice, grain sorghum, waxy grain sorghum, waxy maize or tapioca, or mixtures thereof and water soluble or dispersible modifications or derivatives thereof, containing more than about 85 percent by weight of water and from about 2 percent to about 6 percent by weight of starch may be employed in the new formulations of the invention. Modified starches that may be used in the new formulations include natural starches that have been de-graded to obtain a lower viscosity by acidic, oxidative or enzymic depolymeri-zation. Additionally, low viscosity commercially available propoxylated and ethoxylated starches are useable in the new formulations and are presently pre-ferred since their low viscosity at relatively high solids concentrations make them very adaptable to spraying processes. Suitable alkoxylated, low viscosity starches are submicron sized particles of hydrophobic starch that are readily dispersed in water and are prepared by alkoxylation of granular starch with a monofunctional alkoxylating agent which provides the starch with ether linked 1~76~g3 hydrophobic groups. A suitable method for their preparation is taught in United States Patent 3,462,283. In accordance with the invention, the pro-poxylated or ethoxylated starch derivatives are dispersed in the aqueous medium in an amount of from about 2 percent to about 6 percent by weight of the spray formulation.
The polyhydric component of the new formulation, which enhances the wetting and anti-clogging properties of the composition, is typically present in quantities of from about 0.05% to about 1% by weight of the mixture, pre-ferably about 0.1 to 0.5% by weight. The polyhydric compound is chosen from the group of polymeric glycols of alkanes and olefins having from 2 to about 6, preferably 2 carbon atoms. Representative and preferred members of this group of compounds are polyethylene glycols having molecular weights from about 1000 to about 12,000. ~ost preferable among this group of polyhydric components is a polyethylene glycol having a molecular weight of 6,000 present in the composition.
Another component of the new formulation is a nonionic surfactant which enhances the penetration of the composition into the fabric. This diminishes the sole plate build up and helps reduce the amount of flaking which may occur. The nonionic surfactants of the present formulation are generally present in quantities of from about 0.01% to about 0.5% by weight of the mix-ture.
As used herein the term "nonionic surfactant" refers to a compound used in the formulation which compound is other than the polymeric polyhydric material which is also required. Amphoteric, zwitterionic and polar nonionic surfactants are useful surfactants which may be substituted for the nonionic surfactant in the practice of this invention.
The nonionic synthetic organic detergents are generally the condensa-tion product of an organic aliphatic or alkyl aromatic hydrophobic compound and hydrophilic alkylene oxide groups. Practically any hydrophobic compound having a carboxy, hydroxy, amido, or amino group with a free hydrogen attached to the nitrogen can be condensed with an alkylene oxide such as ethylene oxide or with the polyhydration products thereof, e.g., polyethylene glycoL, to form 37~S~
a nonionic detergent. Further, the length of the polyalkyleneoxy chain can be adjusted to achieve the desired balance between the hydrophobic and hydrophilic elements.
Useful for the nonionic compound types of hydrophobes are higher aliphatic alcohols and alkyl phenols, although others may be used such as carboxylic acids, carboxamides, mercaptans~ sulphonamides, etc. The ethylene oxide condensates with higher alkyl phenols represent a preferred class of nonionic compounds. Usually the hydrophobic moiety should contain at least about 6 carbon atoms, and preferably at least about 8 carbon atoms, and may contain as many as about 50 carbon atoms or more. The amount of alkylene oxide will vary considerably depending upon the hydrophobe, but as a general guide a rule, at least about 5 moles of alkylene oxide per mole of hydrophobe should be used. The upper limit of alkylene oxide will vary, also, but no particular criticality can be ascribed thereto. As much as 200 or more moles of alkylene oxide per mole of hydrophobe may be employed. While ethylene oxide is the preferred and prodominating oxyalkylating reagent, other lower alkylene oxides such as propylene oxide, butylene oxide, and the like may also be used or substituted in part for the ethylene oxide.
Other nonionic compounds which are suitable are the polyoxyalkylene esters of the organic acids such as the higher fatty acids, the rosin acids, tall oil acids, acids from petroleum oxidation products, etc. These esters will u~ually contain from about 10 to about 22 carbon atoms in the acid moiety and from about 12 to about 30 moles of ethylene oxide or its equivalent.
Still other nonionic surfactants are the alkylene oxide condensates with the higher fatty acid amides. The fatty acid group will generally con-tain from about 8 to about 22 carbon atoms and this will be condensed with about 10 to about 50 moles of ethylene oxide. The corresponding carboxamides and sulphonamides may also be used as substantial equivalents.
Still another class of nonionic products are the oxyalkylated higher aliphatic alcohols. The fatty alcohols should contain at least 6 carbon atoms, and preferably at least about 8 carbon atoms. The most preferred alcohols are lauryl, myristyl, cetyl, stearyl and oleyl alcohols and should be condensed _ ~ _ 1~)37~S~
with at least about 6 moles of ethylene oxide and, preferably, about 10 to 30 moles of ethylene oxide. A typical nonionic procluct is oleyl alcohol con-densed with 15 moles of ethylene oxide. The corresponding alkyl mercaptans when condensed with ethylene oxide are also admirably suitable in the composi-tions of the present invention.
Still other suitable nonionics are the polyoxyethylene polyoxypropy-lene adducts of l-butanol. The hydrophobe of these nonionics has a minimum molecular weight of 1,000 and consists of an aliphatic monohydric alcohol containing from 1 to 8 carbon atoms to which is attached a heteric chain of oxyethylene and oxypropylene. The weight ratio of oxypropylene to oxyethylene covers the range o~ 95:5 to 85:15. Attached to this is the hydrophilic poly-oxyethylene chain which is from 44.4 to 54.6 percent of the total molecular weigh~ of 1,~00 to 4,000.
A particularly useful group of nonionics is marketed under the trade mark "Pluronics." The compounds are formed by condensing ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol. The molecular weight of the hydrophobic portion of the molecule is of the order of 950 to 4,000 preferably 1,200 to 2,500. The addition of poly-oxyethylene radicals to the hydrophobic portion tends to increase the solubili-ty of the molecule as a whole. The molecular weight of the block copolymers varies from 1,100 to 15,000 and the polyethylene oxide content may comprise 20 to 80 percent by weight.
Suitable nonionics may be derived by the condensation of ethylene oxide with the product resulting from the reaction of propylene oxide and ethylene diamine. The molecular weight varies from 500 to 4,500.
Other nonionic detergents include the ethylene oxide addends of mono-esters of hexahydric alcohols and inner ethers thereof with higher fatty acids containing about 10 to 20 carbon atoms, e.g., sorbitan monolaurate,sorbitan mono-oleate, and mannitan monoalmitate.
The amphoteric detergent which can be used in the compositions of this invention are generally water-soluble salts of derivatives of aliphatic amines which contain at least one cationic group, e.g., non-quaternary nitrogen, ~Q376~
quaternary ammonium, or quaternary phosphonium group, at least one alkyl group of about 8 to 18 carbon atoms and an anionic ~ater-solubili~ing carboxyl, sulfo, sulfato, phosphato or phosphone group in their molecular structure.
The alkyl group may be straight chain or branched and the specific cationic atom may be part of a heterocyclic ring.
Examples of suitable ampholytic detergents include the alkyl beta-aminopropionates, RN~H)C2H4COOM; the alkyl beta-aminodipropionates, RN(C2H4COOM)2; the alkyl and hydroxy alkyl taurinates, RN~CH3)C2H4503M; and the long-chain imidazole derivatives having the following formula:

INl \ CIH2 ~I) R - C ~ N _ W

N 2\
R _ C _ N ~II) wherein R is an acyclic group of about 7 to 17 carbon atoms, W is selected from the group of R20H, R2COOM, and R20R2COOM, Y is selected from the group consisting of OH, R30S03, R2 is an alkylene or hydroxyalkylene group contain-ing 1 to 4 carbon atoms, R is selected from the group consisting of alkyl, alkyl aryl and fatty acyl glyceride groups having 6 to 18 carbon atoms in the alkyl or an acyl group; and M is a water-soluble cation, e.g., sodium potassi-um, ammonium or alkylolammonium.
Formula I detergents are disclosed in Volume II of "Surface Active Agents and Detergents" and in French Patent 1,412,921 and Formula II deter-gents are described in United States 2,773,068; United States 2,781,354; and United States 2,781,357. The acyclic groups may be derived from coconut oil fatty acids ~a mixture of fatty acids containing 8 to 18 carbon atoms), lauric fatty acid, and oleic fatty acid and the preferred groups are C7-C17 alkyl groups. Preferred detergents of this type are sodium N-lauryl beta-amino-propionate, disodium N-lauryl iminodipropionate, and the disodium salt o 2-lauryl-cycloimidium-l-hydroxyl, l-ethoxy-ethanoic acid, l-ethanoic acid.

~376~B
Zwitterionic detergents such as the betaines and sulfo-betaines having the follo~ing formula are also useful:

R / N~) R4 - -X = O
R3 ~ ) wherein R is an alkyl group containing about 10 to L8 carbon atoms, R2 and R3 are each Cl-~3 alkyl, R4 is an alkylene or hydroxyaLkylene group containing about 1 to 4 carbon atoms, and X is C or S:O. The alkyl group can contain one or more intermediate linkages such as amido, ether or polyether linkages or nonfunctional substituents such as hydroxyl or halogen which do not substan-tially affect the hydrophobic character of the group. When X is c, the deter-gent is called a betaine; and when X is S:O, the detergent is called a sulfo-betaine or sultaine. Preferred betaine and sulfobetaine detergents are 1-(lauryl dimethylammonio) acetate, l-myristyl dimethylammonio) propane-3-sul-fonate, and l-~myristyl dimethylammonio)-2-hydroxypropane-3-sulEonate.
The polar nonionic detergents are those in which the hydrophilic group contains a semi-polar bond directly between two atoms, for example, N--~O; P-~O; As-~ 0; and S~~ O. There is charge separation between the two directly bonded atoms, but the detergent molecule bears no net charge and does not dissociate into ions.
The polar nonionic detergents of this invention include open-chain aliphatic amine oxides of the general formula RlR3R3N -~O. For the purpose of this invention Rl is an alkyl, alkenyl, or monohydroxyalkyl radical having about 10 to 20 carbon atoms. R2 and R3 are each selected from the group con-sisting of methyl, ethyl, propyl, ethanol, and propanol radicals.
Other operable polar nonionic detergents are the open-chain aliphatic phosphine oxides having the general formula RlR2R3P-~O wherein Rl is an alkyl, alkenyl~ or monohydroxyalkyl radical ranging in chain length from 10 to 18 carbon atoms, and R2 and R3 are each alXyl and mono-hydroxyalkyl radicals con-taining from 1 to 3 carbon atoms.
The boric acid-borax buffering system is present in the formulation 3Q of the present invention at about 0.25% to about 0.75% by weight of the mix-1~376~
ture, more preferably from about 0.4 to about 0.5% of the mixture. It has been found that by keeping the ratio of borax to boric acid within specific limits significant improvement in the flaking properties of the spray starch can be obtained. More specifically, it has been found that when the ratio of borax to boric acid is between the range of about 5:]L to about 3:1, more pre-ferably about 4:1, an unexpected improvement is achieved in that a reduced tendency to scorch and flake is obtained when the formulation is applied to fabrics and ironed.
~ther materials, having specific functional characteristics may also be present in the new formulations in addition to the aqueous solution or dis-persion of starch, boric-acid-borax buffering system, nonionic surfactant, and polyhydric component. These additional materials may include starch preserva-tives such as sodium benzoate; perfumes; anti-foaming agents such as silicone emulsions, e.g., dimethyl polysiloxane emulsion ~10% silicone); colloidal dis-persants; bactericides, such as formalin; ironing aids such as silicone and fluorocarbon compounds; anti-corrosion agents such as sodium nitrite; sizing agents, such as alkali metal, e.g. sodium, carboxymethyl cellulose; and a host of other functional materials known in the art.
The following examples include preferred and typical sprayable starch formulations that may be prepared in accordance with the invention.

1~376~i~
EXAMPLE 1 and COMPARATIVE EXAMPLE A
The following sprayable starch formulations are prepared.
Ingredients Percent by Weight Comparative Example 1 _Example A
Ethoxylated corn starch 4.00 4.00 Sodium carboxymethylcellulose 0.2 0.2 Boric acid 0.1 Borax 0-4 Formalin (27%) 0.042 0.042 Silicone anti-foam /dimethyl poly-siloxane emulsion ~10% silocone7** 0.5 Polyethylene glycol (m.w. 6000) 0.2 Octyl phenoxy polyethoxy ethanol (9-10 oxyethylene groups per molecule) 0.05 NaN02 0.1 0.1 Dimethyl polysiloxane emulsion ~37% silicone)*** 0.5 0.5 Perfume 0.015 0.015 Propylene glycol - 1.0 Sodium benzoate - 0.10 Deionized water Bal. Bal.
* The ethoxylated corn starch of Example 1 and Comparative Example A is a Corn Products Low Viscosity Starch which can be characteri2ed as follows:
** Union Carbide SAG-470 General Electric SM-2061 Degree of Ethoxylation A mixture of compounds having 0.05 to 0.07 oxyethylene units per 100 glucose units Color White Texture Free flowing powder pH ~lO percent dispersion) 5.5-6.0 Viscosityl 17.5+5.0 cps.
Moisture 12.5 percent max.
Ash 0. 5 percent max.
Viscosity of 10 percent dispersion cooled for 30 minutes at 200F using Brooksfield R.V.F., Spindle No. 1 @20 RPM @ 80F.
_ g _ ~V3~
In preparing the foregoing formulations the starch ingredient is first either dispersed ~propoxylated and ethoxylated starches) or dissolved ~soluble starches) in hot water. The remaining ingredients are then added to the starch solution and the mixture i5 thoroughly blended in a suitable appara-tus.
From about 98 parts to about 90 parts of the ultimate formulation and about 2 parts to about l0 parts of a suitable propellant can then be packaged in a suitable aerosol container. In these examples, 94 parts of the formulation and 6 parts of isobutane were combined to produce the aerosol formulations. Among the propellant fluids that are preferably used are the liquefied gases, materials which at atmospheric temperature and pressure will usually be in the gaseous state. Preferred useful propellants are liquefied gases or mixtures thereof of the hydrocarbon and/or halohydrocarbon types, preferably of 1 to 4 carbon atoms, with the halohydrocarbons having chlorine and/or fluorine as the halogen~s) thereof. Other liquefied gas propellants of the hydrocarbon and halogenated hydrocarbon types may also be employed in desired ratios to yield the dispensing pressure, which is normally from 10 to 100 lbs./sq. in., more preferably 30 to 60 lbs./sq. in. and often ideally about 50 lbs./sq. in. Such pressures are given at 25C. (room temperature).
Among the propellants which may be employed are chlorodifluoro~ethane; di-chlorodifluoromethane; difluoroethane; vinyl chloride; chlorodifluoroethane;
dichlorotetrafluoroethane; ~asymmetrical); dichlorotetrafluoroethane ~symmetri-cal); chlorotrifluoroethane; dichlorofluoroethane; "Chlorothene" ~CC13.CH3);
and octafluorocyclobutane; all of which are examples of halogenated hydrocarbon propellants. Among the hydrocarbon propellants may be mentioned propane; 2-methyl propane ~isobutane); n-butane and cyclobutane. Other such propellants are discussed in the text Pressurized Packaging ~Aerosols) by Herzka and Pickthall ~1958, Academic Press Inc., New York) at pages 19-77. Other useful propellants include inorganic gaseous propellants such as nitrogen, nitrous oxide and carbon dioxide.
The starch formulations of Example 1 and Comparative Example A are tested and compared as follows:

~1137~5~3 Ten pre-washed cotton swatches were ironed consecutively at the ~otton setting using various conventional irons as indicated below, at 50%
wet pickup level (on fabric). Visual observations are made and ràtings are assigned on a scale.
Metal Metal Teflon Teflon Steam Steam Iron Iron Iron Iron w/o Steam w/Steam ~Dry) (Steam) Flat Iron Example 1 0 O
Comparative 3 2 l 2 2 Example A
Scale: 0 - hardly noticeable 1 - slight 2 - moderate 3 - bad A comparison of the formulations of Example 1 and Example A clearly indicate the improved effects that are obtained by use of the boric acid-borax buffer-ing system, nonionic surfactant, and polyhydric component.
Other sprayable formulations in accordance with the invention are prepared in Examples 2 to 4.
Example 2 Ingredients Percent by Weight Propoxylated Corn Starch* 6.0 Sodium carboxymethylcellulose 0,05 Boric acid 0.05 Borax 0.25 - 20 Formalin (27%) 0.042 Polyethylene glycol (M.w. 2000) 1.0 Octylphenoxy polyethoxy ethanol o.s (as in Example 1) NaNo2 0.3 Dimethyl polysiloxane emulsion 1.0 (37% siliccne)***
Dimethyl polysiloxane emulsion 0.75 (10% silicone)***
Perfume 0.015 Deionized water Balance ~37~i5~
*-The propoxylated corn starch of Example 2 is sold as a Corn Products low Viscosity Starch and can be characterized as follows:
Degree of Propoxylation 0.05 to 0.07 oxypropylene units per 100 glucose units Color White Texture Free flowing powder pH ~10% dispersion) 5.5-7.0 Viscosityl 17.5-~5.0 cps.
Moisture 12.5 percent max.
Ash 0.5 percent max.
lViscosity of lO percent dispersion cooled for 30 minutes at 200F using~
Brookfeld R,S.F. Spindle No. 1 ~ 20 RPM ~ 80F.
** and *** - As in Example 1 Example 3 Ingredients Percent by Weight Hypochlorite Oxidized Corn Starch* 2.0 Boric acid 0.15 Borax 0-5 Polyethylene glycol ~m.w. 4000) 0.05 Nonyl phenol ~condensed with 9 moles of 0.01 ethylene oxide) 2a NaN2 0.05 Dimethyl polysiloxane emulsion (37% silicone)*** - 0.1 Dimethyl polysiloxane emulsion ~10% silicone)** 0.25 Deioni~ed water Balance The degree of hypochlorite oxidation is in the range of about 10 to about 20 scott. The scott viscosity test is run at a solids content of a~out 4%.
** and - As in Example 1.

~lQ3~7~5B
ExampIe 4 Ingredients Percent by Weight ~thoxylated corn starch 4.0 Boric acid 0.1 Borax 0 4 Polyethylene glycol ~m.w. 6000) 0.2 Dinonyl phenol (condensed with 15 moles of ethylene oxide) 0.05 Dimethyl polysiloxane emulsion ~37% silicone)*** 0-5 Dimethyl polysiloxane emulsion ~10~ silicone)** 0.5 Deionized water Balance , ** and * - As in ~xampie 1 When sprayed onto cotton fabrics, the above formulations are virtually free of any flaking problem. Further no significant problem of aerosol valve clogging is experienced. The above formulations provide fabrics with a smooth "hand" as opposed to the somewhat harsh feel usually associated with starched garments.
Although the invention has been described and illustrated with re~erence to certain specific embodiments, modifications can be made without departing from the spirit and scope of the invention as defined by the follow-ing claims.

Claims (7)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. An aerosol starch formulation for use in finishing laundered textile garments comprising from about 2 to about 10 parts by weight of a liquefied normally gaseous propellent and from about 98 to about 90 parts by weight of an aqueous starch composition comprising at least about 85 percent by weight of water, from about 2 to about 6 percent by weight of starch, said starch being present as a solution or dispersion, from about 0.05 to about 1.0 percent by weight of a polyhydric material selected from the group of polymeric glycols of alkanes and oelfins having from 2 to about 6 carbon atoms, from about 0.01 to about 0.5 percent by weight of a nonionic surfactant selected from the group consisting of condensation products of an organic aliphatic or alkyl aromatic hydrophobic compound and a hydrophilic group comprising ethylene oxide, water-soluble salts of derivatives of aliphatic amines which contain at least one cationic group, one alkyl group of 8 to 18 carbon atoms and an anionic water-solublizing carboxyl, sulfo, sulfato, phos-phato, or phosphono group in their molecular structure, zwitterionic detergents having the structural formula wherein R is an alkyl group containing about 10 to 18 carbon atoms, R2 and R3 are each C1 to C3 alkyl, R4 is an alkylene or hydroxy alkylene group containing 1 to 4 carbon atoms and X is C or S:O and polar nonionic detergents of the formula R1 R2 R3 Y ?O
wherein R1 is an alkyl, alkenyl or monohydroxyalkyl radical having about 10 to 20 carbon atoms, R2 and R3 are each selected from the group consisting of methyl, ethyl, propyl, ethanol and propanol radicals and Y is N or P, from about 0.05 to about 0.15 percent by weight of boric acid and from about 0.2 to about 0.6 percent by weight of borax, the weight ratio of borax to boric acid being from about 5:1 to about 3:1, said formulation having s substantially reduced tendency of flake when applied onto fabric which is then ironed.

2. The formulation of claim 1 which further contains, as an anti-foaming agent, from about 0.25 to about 0.75 percent by weight of a dimethyl polysiloxane emulsion containing about 10% by weight of silicone.

3. The formulation of claim 1 which further contains, as an ironing aid, from about 0.1 to about 1.0% by weight of a dimethyl polysiloxane emulsion containing about 37% by weight of silicone.

4. The formulation of claim 1 wherein said starch is a low viscosity starch derivative chosen from the group consisting of propoxylated and ethoxylated starches.

5. The formulation of claim 1 wherein said polyhydric material is a polyethylene glycol.

6. The formulation of claim 5 wherein the polyethylene glycol has a molecular weight from about 1,000 to about 12,000.

7. An aerosol starch formulation for use in finishing laundered textile garments comprising about 6 parts by weight of a liquefied isobutane propellant and about 94 parts by weight of an aqueous starch solution or dispersion comprising at least about 85 percent by weight of water, about 4 percent by weight of an ethoxylated corn starch, about 0.2 percent by weight of polyethylene glycol having a molecular weight of about 6,000, about 0.05 percent of octylphenoxy polyethoxy ethanol having about 9 to 10 oxyethy-lene groups per molecule, about 0.4 percent by weight of borax, about 0.1 percent by weight of boric acid, as an anti foaming agent and an ironing aid about 0.5 percent of a dimethyl polysiloxane emulsion containing about 10%
silicone andaabout 0.5 percent of a dimethyl polysiloxane emulsion containing about 37% silicone respectively, said formulation having a substantially reduced tendency to flake when applied to a fabric which is then ironed.