WO2005097958A1 - Detergent composition and method of using same - Google Patents

Detergent composition and method of using same Download PDF

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Publication number
WO2005097958A1
WO2005097958A1 PCT/US2004/007441 US2004007441W WO2005097958A1 WO 2005097958 A1 WO2005097958 A1 WO 2005097958A1 US 2004007441 W US2004007441 W US 2004007441W WO 2005097958 A1 WO2005097958 A1 WO 2005097958A1
Authority
WO
WIPO (PCT)
Prior art keywords
blend
detergent
concentrate
surfactant
use solution
Prior art date
Application number
PCT/US2004/007441
Other languages
French (fr)
Inventor
Lance. L. Renfrow
Original Assignee
Renfrow Lance L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renfrow Lance L filed Critical Renfrow Lance L
Priority to PCT/US2004/007441 priority Critical patent/WO2005097958A1/en
Publication of WO2005097958A1 publication Critical patent/WO2005097958A1/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88Ampholytes; Electroneutral compounds
    • C11D1/94Mixtures with anionic, cationic or non-ionic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/004Surface-active compounds containing F
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88Ampholytes; Electroneutral compounds
    • C11D1/92Sulfobetaines ; Sulfitobetaines
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10Objects to be cleaned
    • C11D2111/14Hard surfaces
    • C11D2111/20Industrial or commercial equipment, e.g. reactors, tubes or engines

Definitions

  • the present invention concerns detergent compositions and methods of
  • the present invention concerns detergent
  • present invention concerns detergent concentrates and use solutions prepared therefrom and methods of use therefor.
  • detergent composition which comprises a mixture or blend of a high cloud point and low cloud point surfactant. This blend has particular utility in cleaning
  • the use solution mixture or blend has low surface tension, is low foaming, and is compatible in both caustic and acid environments. Further,
  • the blend of surfactants contains sultaine
  • amphoteric surfactant as one component which hydrotropes the blend, itself, into
  • This detergent blend is employed in a detergent concentrate from which is
  • the present invention shows efficacy in both caustic and acid
  • detergent blend which, generally, comprises:
  • This detergent blend is employed in a detergent concentrate from which is
  • fluorinated surfactant is a fluorinated surfactant.
  • fluorinated surfactants are anionic surfactants
  • the second compound or component of the blend is an amphoteric
  • this hydrotrope is a sultaine-based hydrotrope and, more
  • an alkyl ether hydroxy propyl sultaine preferably, an alkyl ether hydroxy propyl sultaine.
  • a hydrotropic compound is sold commercially under the name Miratine ASC.
  • hydrotrope will comprise from about 95.0% to about 99.5%, by weight, based
  • n is an integer ranging from 1 to about 9
  • y is an integer ranging from 0
  • X is an anionic radical, which may be selected from the group
  • a particularly preferred surfactant is that sold by Innovative Chemical
  • Flexiwet NF is
  • perfluorinated anionic functional compound comprising about a
  • the fluorinated surfactant will generally comprise from about 0.5 % to
  • the detergent blend hereof is used to prepare a detergent concentrate
  • the surfactant or detergent blend is present in an amount ranging from about 0.5% to about 1.0%, by weight, based upon the total weight of the concentrate.
  • the concentrate preferably, comprises an aqueous solution of a base or
  • the caustic or base is, preferably, an alkali metal hydroxide, such as,
  • alkali metal bicarbonates and the like.
  • the caustic or base Preferably, though, the caustic or base
  • Sodium hydroxide is typically employed as a 50% aqueous solution thereof.
  • the caustic material as the 50% aqueous solution, comprises from
  • aqueous caustic solution is used in the final formulation or use solution.
  • the concentrate further includes a least one chelant.
  • the preferred chelants are the alkali metal salts of gluconic acid including sodium gluconate, sodium glucoheptonate, 1-methyl
  • glucoside and the like. Mixtures of chelants can be used.
  • the chelant will be used in an amount ranging from about
  • the preferred chelant is sodium gluconate.
  • the concentrate further includes a scale inhibitor as well as a dispersant.
  • a scale inhibitor as well as a dispersant. Any of the well-known inhibitors and dispersants may be use so long
  • Useful compounds include, for example, DEQUEST 2000, which functions as a buffer and scale inhibitor, which is aminotrismethylene phosphonic acid ( ATMP) and the like.
  • this adjuvant will comprise
  • the balance of the concentrate is water.
  • the concentrate is prepared by admixing the components together at
  • the concentrate is a homogeneous solution and is storage
  • the concentrate is admixed with water at ambient conditions with stirring.
  • the use solution will generally contain or be about a 1% to about a
  • the concentrate is diluted with water to achieve a
  • the use solution will contain from about 0.5% by weight to about 5% by weight of caustic.
  • the present detergent composition has
  • the composition is pumped through the lines for about 2 to about 30 minutes. Thereafter, the line is rinsed at ambient temperatures with water.
  • the present detergent blend is a low foam composition that is
  • fluorinated surfactant lowers the surface tension to a degree that there is less
  • a surfactant blend in accordance herewith is prepared by the following

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

A detergent blend is prepared by admixing together a fluorinated surfactant and an amphoteric-based sultaine surfactant hydrotrope. This blend can then be formulated into a detergent concentrate which includes a caustic compound, a chelant, a descaler, and other adjuvants to enable the concentrate to be diluted into a use solution for use in either an acid or base environment. The use solution prepared from the detergent blend is particularly useful in cleaning draft beer lines, dairy lines, and the like.

Description

DETERGENT COMPOSITION AND METHOD OF USING SAME
Cross Reference to Related Applications
[0001] This application is a continuation-in-part application of co-pending
United States Patent Application Serial No. 09/886,950, filed June 19, 2001,
which claims priority of Provisional Application Serial No. 60/212,699, filed June
19, 2000 for "DETERGENT COMPOSITIONS AND METHODS," the disclosures of which are hereby incorporated by reference.
Background of the Invention
1. Field of the Invention
[0002] The present invention concerns detergent compositions and methods of
use therefor. More particularly, the present invention concerns detergent
concentrates and use solutions prepared therefrom. Even more particularly, the
present invention concerns detergent concentrates and use solutions prepared therefrom and methods of use therefor.
2. Prior Art
[0003] In United States Patent Application Publication No. 20020037821,
published March 28, 2002 for "Detergent Compositions and Methods," the
disclosure of which is hereby incorporated by reference, there is disclosed a
detergent composition which comprises a mixture or blend of a high cloud point and low cloud point surfactant. This blend has particular utility in cleaning
brewery and food processing apparatus. According to the invention defined therewithin, the use solution mixture or blend has low surface tension, is low foaming, and is compatible in both caustic and acid environments. Further,
according to this patent publication, the blend of surfactants contains sultaine
amphoteric surfactant as one component which hydrotropes the blend, itself, into
solution to form an aqueous use solution thereof.
[0004] The present invention, as will subsequently be detailed hereinafter,
provides an improved formulation over that of the above-referred to prior art in
that a single surfactant is ultimately hydrotroped into the use solution and as a
consequence thereof, affords a use solution with a much lower surface tension, lower foam and enhanced rinseability estimated to be at least five-fold over the
prior art. Necessarily, then, less material is used providing a major cost savings
and a much cleaner system.
Summary of the Invention
[0005] In accordance herewith, there is provided a detergent blend which,
generally, comprises:
(a) a fluorinated surfactant, and
(b) an amphoteric-based sultaine surfactant hydrotrope.
This detergent blend is employed in a detergent concentrate from which is
prepared a use solution compatible in both a caustic and an acid environment
and which is useful for cleaning protein deposits in brewery apparatus as well as dairy and other related food processing apparatus.
[0006] The present invention shows efficacy in both caustic and acid
environments and is particularly adapted for utilization in the removal of protein
deposits in brewery apparatus, dairy processing and related food apparatus. [0007] For a more complete understanding of the present invention reference
is made to the following detailed description and accompanying examples.
Description of the Preferred Embodiment
[0008] As hereinabove note and in accordance herewith, there is provided a
detergent blend which, generally, comprises:
(a) a fluorinated surfactant, and (b) an amphoteric-based sultaine surfactant hydrotrope.
This detergent blend is employed in a detergent concentrate from which is
prepared a use solution compatible in both a caustic and an acid environment
and which is useful for cleaning protein deposits in brewery apparatus as well as
dairy and other related food processing apparatus.
[0009] With more particularity and as noted, the surfactant used in the blend,
is a fluorinated surfactant. Such fluorinated surfactants are anionic surfactants
having one or more fluorine atoms incorporated thereinto either into the
backbone of the surfactant or as a branched substituent.
[00010] The second compound or component of the blend is an amphoteric
hydrotrope. Preferably, this hydrotrope is a sultaine-based hydrotrope and, more
preferably, an alkyl ether hydroxy propyl sultaine. Such a hydrotropic compound is sold commercially under the name Miratine ASC. Generally, the
hydrotrope will comprise from about 95.0% to about 99.5%, by weight, based
upon the total weight of the detergent blend and, preferably, from about 96.0 %
to about 98.0 %, by weight of the total weight of the detergent blend. [00011] Among the useful fluorinated surfactants are those which correspond
to the formula:
CF3 - CF2 (CF2CF2)n (CH2)y X Wherein n is an integer ranging from 1 to about 9, y is an integer ranging from 0
to about 5 and X is an anionic radical, which may be selected from the group
consisting of sulfate, sulfonate, phosphate, phosphonate, ammonium, thiosulfate,
thiosulfonate, and the like, as well as mixtures thereof.
[00012] A particularly preferred surfactant is that sold by Innovative Chemical
Technologies, Inc. under the trademark FLEXIWET NF. Flexiwet NF is
described as a perfluorinated anionic functional compound comprising about a
50:50 weight mixture blend of a linear C4 to Cu perfluoro alkyl ethyl
phosphonate acid and a perfluoro alkyl ethyl phosphonic acid surfactant.
[00013] The fluorinated surfactant will generally comprise from about 0.5 % to
about 5.0 % by weight of the blend and, preferably, from about 2.0 % to about 4.0
% by weight of the blend.
[00014]
[00015] The detergent blend hereof is used to prepare a detergent concentrate
therefrom. In manufacturing the concentrate, the surfactant or detergent blend is present in an amount ranging from about 0.5% to about 1.0%, by weight, based upon the total weight of the concentrate.
[00016] The concentrate, preferably, comprises an aqueous solution of a base or
caustic material, a chelant, a dispersant, a scale inhibitor, the detergent blend and water. [00017] The caustic or base is, preferably, an alkali metal hydroxide, such as,
sodium hydroxide, potassium hydroxide, and the like as well as mixtures thereof.
Other compounds useful as a base include, for example, alkali metal carbonates,
alkali metal bicarbonates and the like. Preferably, though, the caustic or base
material is sodium hydroxide because of its superior properties as a soap.
Sodium hydroxide is typically employed as a 50% aqueous solution thereof.
Generally, the caustic material, as the 50% aqueous solution, comprises from
about 90 % up to about 95% by weight of the total weight of the concentrate.
[00018] Herein, and preferably, from about 1% to about 10% of the 50%
aqueous caustic solution is used in the final formulation or use solution.
[00019] As noted, the concentrate further includes a least one chelant. Because
of its non-corrosive properties the preferred chelants are the alkali metal salts of gluconic acid including sodium gluconate, sodium glucoheptonate, 1-methyl
glucoside and the like. Mixtures of chelants can be used.
[00020] Generally, the chelant will be used in an amount ranging from about
1.0% to about 5.0%, by weight, and based on the total weight of the concentrate
and, preferably, from about 1% to about 3.5% weight percent. In preparing the
concentrate, the preferred chelant is sodium gluconate.
[00021] As noted, the concentrate further includes a scale inhibitor as well as a dispersant. Any of the well-known inhibitors and dispersants may be use so long
as they are chemically compatible with the detergent blend and the base material.
[00022] Useful compounds include, for example, DEQUEST 2000, which functions as a buffer and scale inhibitor, which is aminotrismethylene phosphonic acid ( ATMP) and the like. Generally, this adjuvant will comprise
from about 1.0% to about 2.25%, by weight, of the concentrate.
[00023] The balance of the concentrate is water.
[00024] The concentrate is prepared by admixing the components together at
ambient conditions. The concentrate is a homogeneous solution and is storage
stable.
[00025] In preparing a use solution or final formulation from the concentrate,
the concentrate is admixed with water at ambient conditions with stirring. As
noted above, the use solution will generally contain or be about a 1% to about a
10%, by weight, the 50% aqueous caustic solution, based on the caustic in the
concentrate.
[00026] In other words, the concentrate is diluted with water to achieve a
presence therein of about a 1% to about a 10%, by weight, amount of the 50%
caustic solution. Thus, the use solution will contain from about 0.5% by weight to about 5% by weight of caustic.
[00027] The use solution is deployed by pumping it through the fluid delivery
lines, such as a draft line, milk line, etc. The present detergent composition has
exhibited superior capabilities in cleaning draft beer delivery lines due to its low surface tension.
[00028] Generally, such lines will be at a temperature from about 50°F to
slightly about 200°F. The present composition is effective over this range.
[00029] Usually, the composition is pumped through the lines for about 2 to about 30 minutes. Thereafter, the line is rinsed at ambient temperatures with water. [00030] As noted, the present detergent blend is a low foam composition that is
water soluble and is useful in both acid and base environments. The
fluorinated surfactant lowers the surface tension to a degree that there is less
use solution consumption and faster cleaning cycle times.
[00031] For a more complete understanding of the present invention, references made to the following non-limiting illustrative examples. In the
examples, all parts are by weight absent indications to the contrary.
Example 1
[00032] A surfactant blend in accordance herewith is prepared by the following
procedure:
[00033] Into a suitable vessel equipped with stirring means was added the
following, at room temperature:
Ingredient Amount (pbw) Miratine ASC Hydrotroped) 96.0 Fluorinated surfactant 4.0 100.0
("Flexiwet NF
EXAMPLE II
[00034] This example illustrates the preparation of a detergent concentrate in
accordance with the present invention.
[00035] Into a suitable vessel equipped with a stirrer is added with stirring: Ingredient Amount (pbw) Surfactant Blend*1) 0.50 Caustic Soda, as a 50% aqueous sol'n 90.00 Sodium Gluconate, as a 60% aqueous sol'n 3.25
Dequest 2000, as a buffer 2.25
Water 4.00 100.0
tøa 44:1 part blend of Mirataine ASC and Flexiwet NF
This concentrate is useful in brewery cleaning. ] Having, thus, described the invention what is claimed is:

Claims

1. A detergent blend which comprises:
(a) a fluorinated surfactant; and
(b) an amphoteric-based sultaine surfactant hydrotrope.
2. The detergent blend of Claim 1 wherein the fluorinated surfactant
corresponds to the formula:
CF3 - CF2 (CF2CF2)n (CH2)y X
3. The detergent blend of Claim 2 wherein the fluorinated surfactant
is a 50:50 weight mixture blend of a C to G perfluoro alkyl ethyl phosphonate
acid and a perfluoro alkyl ethyl phosphonic acid.
4. The detergent blend of Claim 1 which further comprises a second
surfactant, the surfactant being an anionic surfactant.
5.. A detergent concentrate comprising: from about 0.5% to about 1.0%, by weight, of the blend of Claim 1.
6. The concentrate of Claim 5 which further comprises: an aqueous caustic material, a chelant, a dispersant, a scale inhibitor, a buffer, and water.
7. The concentrate of Claim 6 wherein the base is a 50% aqueous
solution of caustic soda.
8. A use solution comprising: water and the concentrate of Claim 5.
9. The use solution of Claim 8 wherein: the use solution contains from about V/o to about 10%, by weight, of
a 50% aqueous caustic solution.
10. A method of cleaning a fluid delivery line in a brewery which
comprises:
11. The method of Claim 10 wherein: pumping is done at a temperature ranging from about 50°F to about 200°F.
12. The method of Claim 11 which further comprises: rinsing the line at ambient temperatures after pumping the use solution therethrough.
PCT/US2004/007441 2004-03-11 2004-03-11 Detergent composition and method of using same WO2005097958A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2004/007441 WO2005097958A1 (en) 2004-03-11 2004-03-11 Detergent composition and method of using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2004/007441 WO2005097958A1 (en) 2004-03-11 2004-03-11 Detergent composition and method of using same

Publications (1)

Publication Number Publication Date
WO2005097958A1 true WO2005097958A1 (en) 2005-10-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8628682B2 (en) 2011-10-24 2014-01-14 E I Du Pont De Nemours And Company Compositions comprising a fluorosurfactant and a hydrotrope

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042522A (en) * 1975-03-24 1977-08-16 Ciba-Geigy Corporation Aqueous wetting and film forming compositions
US4132561A (en) * 1976-08-06 1979-01-02 Marion Darrah Intrachromospheruloid pigments and processes for producing same
US5074358A (en) * 1990-07-03 1991-12-24 Alberta Oil Sands Technology And Research Authority Surfactant-stabilized foams for enhanced oil recovery
US5616273A (en) * 1994-08-11 1997-04-01 Dynax Corporation Synergistic surfactant compositions and fire fighting concentrates thereof
US5648527A (en) * 1994-03-09 1997-07-15 Hoechst Aktiengesellschaft Saturated fluoroalkylamines and their derivatives, and mixtures thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042522A (en) * 1975-03-24 1977-08-16 Ciba-Geigy Corporation Aqueous wetting and film forming compositions
US4132561A (en) * 1976-08-06 1979-01-02 Marion Darrah Intrachromospheruloid pigments and processes for producing same
US5074358A (en) * 1990-07-03 1991-12-24 Alberta Oil Sands Technology And Research Authority Surfactant-stabilized foams for enhanced oil recovery
US5648527A (en) * 1994-03-09 1997-07-15 Hoechst Aktiengesellschaft Saturated fluoroalkylamines and their derivatives, and mixtures thereof
US5616273A (en) * 1994-08-11 1997-04-01 Dynax Corporation Synergistic surfactant compositions and fire fighting concentrates thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8628682B2 (en) 2011-10-24 2014-01-14 E I Du Pont De Nemours And Company Compositions comprising a fluorosurfactant and a hydrotrope

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