EP1409632A1 - Method of making a composition, a product from such method, and the use thereof in removing or dissolving a contaminant from an environment - Google Patents

Method of making a composition, a product from such method, and the use thereof in removing or dissolving a contaminant from an environment

Info

Publication number
EP1409632A1
EP1409632A1 EP01961943A EP01961943A EP1409632A1 EP 1409632 A1 EP1409632 A1 EP 1409632A1 EP 01961943 A EP01961943 A EP 01961943A EP 01961943 A EP01961943 A EP 01961943A EP 1409632 A1 EP1409632 A1 EP 1409632A1
Authority
EP
European Patent Office
Prior art keywords
hydrogen peroxide
glycolic acid
water
weight percent
composition
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP01961943A
Other languages
German (de)
French (fr)
Other versions
EP1409632B1 (en
EP1409632A4 (en
Inventor
James E. Mcclung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
McClung James E
Original Assignee
McClung James E
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 McClung James E filed Critical McClung James E
Publication of EP1409632A1 publication Critical patent/EP1409632A1/en
Publication of EP1409632A4 publication Critical patent/EP1409632A4/en
Application granted granted Critical
Publication of EP1409632B1 publication Critical patent/EP1409632B1/en
Priority to CY20071101329T priority Critical patent/CY1107765T1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39Organic or inorganic per-compounds
    • C11D3/3947Liquid compositions
    • 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
    • C11D7/00Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22Organic compounds
    • C11D7/26Organic compounds containing oxygen
    • C11D7/261Alcohols; Phenols
    • 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
    • C11D7/00Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22Organic compounds
    • C11D7/26Organic compounds containing oxygen
    • C11D7/265Carboxylic acids or salts thereof

Definitions

  • the invention relates to a method of making a composition and a product from such
  • rollers apparatus to contain and move fluids (such as hoses and trays), and other moving
  • pesticide systems meat processing systems, poultry processing systems, dairy processing
  • the contaminants can foul such water-containing systems to such an extent that such water-
  • compositions that can be used for reducing the concentration of,
  • compositions can be difficult to use due to the difficulty in determining how much of each component of the composition should be added.
  • An object of the present invention is to provide a process for preparing a composition
  • Another object of the present invention is to provide
  • composition having desirable properties such as enhanced capabilities for reducing
  • a further object of the present invention is to provide an improved process of
  • glycolic acid also referred to as hydroxy acetic
  • Another embodiment of the present invention is a process of preparing a novel
  • composition comprising contacting hydrogen peroxide, glycolic acid, and water.
  • a novel composition of the present invention can be used for reducing the
  • Such contaminants can include Groups II- VIII of the Periodic
  • Such environments can include water-
  • Such water-containing systems can include
  • swimming pools water treating systems, drainage systems, boiler systems, chiller systems,
  • a process of preparing a composition of the present invention comprises
  • the hydrogen peroxide is generally
  • hydrogen peroxide solution generally comprises at least about 0.1 weight percent hydrogen
  • invention can be prepared by adding a stabilizing amount of water to a commercially
  • the water suitable for use in a process of the present invention is preferably a low
  • solids water generally comprising less than about 10 parts per million (ppm) dissolved solids
  • dissolved solids and most preferably about 0 ppm dissolved solids.
  • the water preferably low solids water, can be prepared by any suitable means known
  • the low solids water can be prepared by subjecting a high solids water to a treating
  • the high solids water generally comprises more dissolved solids than
  • the low solids water Generally, the high solids water comprises more than about 200 ppm of
  • water is present in a stabilizing amount which allows for the contacting of
  • stabilizing amount of water as described herein should be large enough to prevent an
  • composition from being so dilute that such resulting composition no longer has the ability to
  • composition so that such composition is effective in reducing the concentration of, preferably
  • a stabilizing amount of water preferably low solids water, is present in an
  • a stabilizing amount of water is present in an amount of at least about 60 percent by weight water based on
  • glycolic acid is preferably a glycolic acid solution comprising glycolic acid and
  • Such glycolic acid solution generally comprises at least about 1 weight percent
  • glycolic acid and at most about 15 weight percent glycolic acid, preferably at least about 1
  • weight percent glycolic acid and at most about 10 weight percent glycolic acid, and more
  • glycolic acid solution which can be used in a process of
  • the present invention can be obtained by adding low solids water as described herein to a
  • the hydrogen peroxide, glycolic acid, and water can be contacted by any suitable
  • such contacting comprises mixing utilizing any suitable
  • mixing means known in the art for mixing an aqueous solution with another aqueous solution.
  • a hydrogen peroxide solution as described herein is mixed with a glycolic
  • glycolic acid is generally at least about 1 :1 and at most about 30:1, preferably at least about 2:1 and at most about 20:1, more preferably at least about 2:1 and at most about 10:1, and
  • the temperature during contacting is at least about 0°F and at most about
  • 100°F preferably at least about 10°F and at most about 90°F, and more preferably at least
  • the pressure during contacting can be any pressure
  • the pressure is generally at least about
  • the time period of contacting can be any time period capable of providing for a
  • the time period of contacting is generally at least about 0.1
  • a process of providing a composition of the present invention can further comprise
  • isopropyl alcohol has a purity of at least about 95 percent, preferably at least about 98 percent,
  • invention can further comprise contacting with one or more components selected from the
  • esters include, but are not limited to, ethoxylated esters and the like and combinations thereof.
  • Suitable acids include, but are not limited to, acetic, sulfuric, formic, peroxyacetic, and the like and combinations thereof.
  • beta hydroxy acids include, but are not limited to, citric, lactic, maleic, and the like and
  • Such additional component(s) can be added in any amount(s) as long as such
  • amount(s) provides a composition effective in reducing the concentration of, preferably
  • composition and more preferably in an amount of at least about 0.1 weight percent based on
  • a preferred method of preparing a composition of the present invention comprises
  • glycolic acid solution prepared by contacting a 70 weight percent glycolic acid
  • composition having a pH of about 1.9 to about 3.5. Such composition is particularly suitable
  • glycolic acid solution prepared by contacting a 70 weight percent
  • glycolic acid solution with low solids water comprising less than about 1 ppm dissolved
  • composition is particularly suitable for use in reducing the concentration of, preferably
  • An additional preferred process of preparing such composition is to further contact the
  • composition with isopropyl alcohol having a purity of about 99 percent in an amount
  • a composition of the present invention generally has a pH of at least about 1.5 and at
  • a composition of the present invention generally has a specific gravity of at least
  • present invention comprises a molecule containing two carbon atoms, four hydrogen atoms,
  • a composition of the present invention prepared by a process of the present invention
  • contaminant(s) from such environment examples include, but are
  • Group II elements Group II elements, Group III elements, Group IV elements, Group V elements, Group
  • surfactants natural gums, synthetic gums, organic compounds, paper fibers, paper filters,
  • clays such as clays, sulfites, sulfates, oxides, adhesives, starches, and the like and combinations thereof.
  • Examples of a suitable environment include, but are not limited to, water-containing
  • system refers to any method, process,
  • water-containing systems refers to any water-containing systems.
  • water-containing systems refers to any water-containing systems.
  • food processing systems refers to any method, process, apparatus, components, and
  • printing systems refers to any method, process, apparatus, components, and the like and combinations thereof known in the art related in any
  • suitable water-containing systems include, but are not limited to,
  • swimming pools water treating systems, drainage systems, boiler systems, chiller systems,
  • composition of the present invention can be contacted with one or more
  • the contacting condition also referred to as the
  • contaminant contacting condition which comprises a concentration of a composition as
  • period can be any contacting condition effective in reducing the concentration of, preferably
  • contacting condition will generally depend on the type and concentration of contaminant and
  • the contacting condition will generally have an increased
  • one or more contaminants is increased compared to the contacting condition necessary when
  • composition of the present invention is used to maintain the reduction in concentration of
  • liquid medium such as the water-containing
  • the concentration of composition is generally at least about 0.1 part
  • composition by volume per million parts environment (ppmv) and at most about 25 volume
  • the concentration of composition is generally at least about 0.1 part
  • composition by weight per million parts environment (ppm) and at most about 20 weight
  • the contacting temperature also referred to as the contaminant contacting
  • temperature is at least about 50°F and at most about 200°F, preferably at least about 70°F
  • the contacting pressure also referred to as the contaminant
  • contacting pressure is generally at least about atmospheric and at most about 100 pounds per
  • the contacting time also referred to as psia
  • the contaminant contacting time is generally at least about 0.1 minute and at most about
  • composition of the present invention examples include, but are
  • a composition of the present invention can be used as a descalant, biocide, slimicide,
  • flocculant, and the like and combinations thereof to reduce the concentration of, preferably remove or dissolve, scale, algae, and the like and combinations thereof from machinery and
  • composition of the present invention can be used as a descalant, biocide and/or
  • algaecide to reduce the concentration of, preferably remove or dissolve, various contaminants
  • the present invention can be used as a calcium and surfactant remover to reduce the
  • composition of the present invention can be used to reduce the
  • composition of the present invention can also be used as a
  • mbber roller rinse to reduce the concentration of, preferably remove or dissolve, organic
  • a composition of the present invention can be used for reducing the concentration of,
  • a contaminant such as scale, algae, fungi, bacteria,
  • a composition of the present invention can be used to reduce the concentration of,
  • a composition of the present invention can be any composition of the present invention.
  • adhesives can thus provide for easy removal of such glues and adhesives.
  • a composition of the present invention can be used to treat anilox rolls, particularly
  • composition of the present invention provides
  • a composition of the present invention can be used to reduce the concentration of,
  • a composition of the present invention can be used in waste sludge treatment
  • a composition of the present invention can be used as an industrial biocide treatment
  • a composition of the present invention can be used to enhance the bleaching
  • a composition of the present invention can be used in fish farming and agricultural
  • Such agricultural processes include, but are not
  • a composition of the present invention can be used to reduce the concentration of,
  • a composition of the present invention can be used to reduce the concentration of,
  • a composition of the present invention can be used to reduce the concentration of,
  • a composition of the present invention can be used to reduce the concentration of,
  • a composition of the present invention can be used to reduce the concentration of,
  • a composition of the present invention can be used to reduce the concentration of,
  • a composition of the present invention can be used as an additive in various products
  • a composition of the present invention can be used to reduce the concentration of,
  • composition of the present invention is used to reduce the concentration
  • a composition of the invention preferably remove or dissolve, contaminants from printing systems.
  • present invention can be used in addition to, or preferably as an alternative to, various
  • composition ofthe present invention is used as a sanitizer, fungicide,
  • algaecide and the like and combinations thereof to reduce the concentration of, preferably
  • compositions ofthe present invention are used as a sanitizer, fungicide, and
  • algaecide and the like and combinations thereof to reduce the concentration of, preferably
  • composition ofthe present invention can be used in addition to, or preferably as an alternative
  • This example illustrates a preparation of a composition ofthe present invention.
  • a 55-gallon quantity of a composition of the present invention was prepared by
  • glycolic acid solution which had been prepared by contacting 0.825 gallons of approximately
  • glycolic acid solution obtained from DuPont Chemical, Wilmington,
  • composition A having a pH
  • composition A as described herein to reduce the concentration of, preferably remove or
  • composition A was then applied directly to the glue residue using a trigger sprayer
  • composition A as described herein to remove organic substances and mineral residue from
  • PCA located in Waco, Texas. Such equipment had been used for several years.
  • composition A was sprayed directly onto the surface of the anilox
  • anilox roll cells having a concentration of 145 cells per linear inch of anilox roll.
  • Composition A appeared to decompose the bonded minerals and deposits, allowing such bonded minerals and deposits to be removed by washing with normal
  • composition A allowed for the anilox equipment to be cleaned on
  • the second method of applying Composition A was by adding Composition A to the
  • composition A A is a mixture of ingredients that were utilized, but had only cleaned the surface ofthe anilox cells.
  • This example illustrates another preparation of a composition ofthe present invention.
  • a 55-gallon quantity of a composition of the present invention was prepared by
  • glycolic acid solution which had been prepared by contacting 1.65 gallons of 70 weight
  • glycolic acid solution obtained from DuPont Chemical, Wilmington, Delaware, as a
  • composition B having a pH of
  • composition of the present invention illustrates a use of a composition of the present invention (Composition 1)
  • a printing press was obtained from Rock Tenn Company, Waxahachie, Texas, and
  • a Man Roland fountain solution recirculating system also referred to as a
  • dampening system which comprised a blender, chiller, and recirculating unit containing an
  • mineral substance residue such as mineral deposits consisting of calcium and lime deposits
  • hair algae which were white, green,
  • press recirculating systems included products comprising a mixture of sodium hydroxide,
  • glycol ethers and various biocides, such as those sold by various chemical manufacturers,
  • composition B was poured directly, in one-pint quantities, into each of
  • composition B contains
  • Composition B The recirculating system was then recharged with a standard fountain solution having
  • startup recovery time was about 2 to 3 sheets. It is believed that the better
  • hydroxide hydroxide, glycol ethers and biocides, with some of these products containing foaming agents
  • Composition B has a similar residual pH, use of Composition B provides a direct benefit to
  • composition of the present invention illustrates a use of a composition of the present invention (Composition 1)
  • the test site consisted of a swimming pool which contained 25,000 gallons of water
  • the swimming pool which was substantially free of chlorine and other chemical substances.
  • the surface areas of the pool under water were covered with a green algae
  • the filter media contained in the swimming pool filtration system was diametaceous earth.
  • the pH ofthe water was 7.2 and the temperature ofthe water was about 78°F.
  • Composition B by pouring Composition B at a steady rate into the pool from a plastic bucket while walking
  • the pool water remained uncovered, dormant, and was not circulated for two weeks.
  • the dissolved oxygen (DO) was 106 parts per million (ppm)
  • composition ofthe present invention is a composition ofthe present invention.
  • Test site 1 consisted of an outdoor water garden comprising a circular-
  • the tank also contained soil, rock, several bricks, and 36
  • Composition B added to the tank by pouring Composition B directly from a plastic bottle into the water at
  • the temperature of the water during addition was about 78°F.
  • Test site 2 consisted of a standard 29-gallon aquarium containing six gallons of
  • the pH was 8.0.
  • the growth medium used in the tank included a General Electric
  • Composition B was added in an amount of 100 parts Composition B by weight per
  • oxygen level was 106 ppm.
  • the dissolved oxygen level was about 44 ppm and an
  • the dissolved oxygen was 44 ppm.

Abstract

A composition which is effective in removing a wide variety of contaminants, such as organic compounds, from a wide variety of environments, such as printing systems, is provided. A process of preparing such composition includes contacting hydrogen peroxide, glycolic acid, and water. The process can additionally include contacting with one or more additional components such as isopropyl alcohol.

Description

METHOD OF MAKING A COMPOSITION, A PRODUCT FROM SUCH METHOD, AND THE USE THEREOF IN REMOVING OR DISSOLVING A CONTAMINANT FROM AN ENVIRONMENT RELATED APPLICATIONS
This application claims priority from provisional U.S. application serial number
60/223,064 filed August 4, 2000.
BACKGROUND OF THE INVENTION
The invention relates to a method of making a composition and a product from such
method wherein such composition is effective in reducing the concentration of a contaminant
in an environment.
It is known that various processes used to produce printed materials such as printing
processes and lithography processes utilize various machinery that contain several parts such
as rollers, apparatus to contain and move fluids (such as hoses and trays), and other moving
parts (such as gears and the like). Such machinery becomes contaminated with various
contaminants, such as organic deposits, calcium deposits, bacteria, fungi, and additional
residue created from the use of various organic-based inks and printing production fluids
known in the art. Great difficulty is encountered in attempting to reduce the concentration of,
preferably remove, such contaminants from the various parts ofthe machinery due, in part, to
the difficulty in accessing the internal parts of such machinery.
In addition, when such contaminant residue is not removed on a consistent basis, it is
known that such residue can accumulate and harden over time creating a residue which is
difficult to remove and can cause undesirable chemical reactions to occur in the various
processes. Processes used in the past to remove such residue have included mechanical
removal that requires disassembling the machinery to access parts that contain such residue
and then removing such residue by mechanical methods such as by hammering, chiseling, and
the like. Such mechanical methods require significant downtime of the machinery and involve increased risk to the equipment and the personnel involved with removing such
residue.
It is also known that various methods for removing such residue, other than
mechanical methods, usually involve the use of fluids such as various solvents and
surfactants. However, such solvents and surfactants do not completely remove such residue.
Further, when such solvents and surfactants do not completely remove such residue, such
residue begins to accumulate as discussed above. Thus, a composition and process of using
such composition for removing contaminants from machinery such as printing and
lithography equipment that does not require mechanical methods of removing such residue,
provides for a substantially complete removal of such residue, and helps to prevent the
accumulation of such residue, would be of significant contribution to the art and to the
economy.
It is also known that various industrial processes used to produce goods utilize various
systems, such as packaging systems, flexographic systems, food processing systems,
bleaching systems, metallurgy systems, acid washing systems, veterinary product systems,
pesticide systems, meat processing systems, poultry processing systems, dairy processing
systems, sanitizing systems, and the like and combinations thereof, which contain several
parts such as gears, rollers, and the like. Such parts can become contaminated with various
contaminants such as organic and calcium deposits, calcium and starch-based glues, and the
like and combinations thereof. Various compositions known to reduce the concentration of,
or remove, such contaminants utilize compositions which are difficult to dispose of due to
environmental regulations and can present significant safety hazards. Thus, a composition,
useful for removing such contaminants from such systems, which is non-toxic, easy to
prepare, and capable of being disposed of without costly disposal procedures would also be of
significant contribution to the art and to the economy. It is also known that various industrial processes used to produce goods such as paper
and pulp products utilize various water-containing systems. Such water-containing systems
are also found in various printing systems, water treating systems, drainage systems, boiler
systems, chiller systems, and the like. Use of such water-containing systems presents several
problems relating to the fouling of such water-containing systems with various contaminants
such as scale, algae, fungi, bacteria, surfactants, various organic compounds, and the like.
The contaminants can foul such water-containing systems to such an extent that such water-
containing systems require extensive cleaning to remove such contaminants, which results in
a decrease in production of goods.
Various known compositions that can be used for reducing the concentration of,
preferably removing or dissolving, such contaminants from such water-containing systems
frequently utilize chlorine. However, use of such chlorine-based compositions present
various environmental and safety hazards and further, disposal of such products produced
using such chlorine-based compositions requires close environmental scrutiny and regulation.
In addition, such chlorine-based compositions are frequently utilized in gaseous form which
requires extensive safety and training procedures to be utilized. Thus, a composition, useful
for removing or dissolving one or more contaminants from an environment that contains
water-based systems, which is non-toxic, inexpensive, and easy to prepare and use would be
of significant value to the art and to the economy.
In addition, compositions, useful in reducing the concentration of, preferably
removing or dissolving, contaminants from an environment, which contain more than one
component commonly require one of the components to be added to the environment first,
followed by the addition of a second component. The two components must then react "in
situ" to thereby provide a composition that can remove or dissolve the contaminants
contained within the environment. Such compositions can be difficult to use due to the difficulty in determining how much of each component of the composition should be added.
Thus, a composition useful in reducing the concentration of, preferably removing or
dissolving, contaminants from an environment and that can be prepared "ex situ" in various
concentrations, which can then be added to an environment to remove or dissolve
contaminants would be of significant contribution to the art and to the economy.
In addition, a composition useful in reducing the concentration of, preferably
removing or dissolving, contaminants from an environment which is prepared from easily
accessible components and which can be prepared by a simple procedure utilizing a minimum
of preparation apparatus would also be of significant contribution to the art and to the
economy.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a process for preparing a composition
which is useful for reducing the concentration of, preferably removing or dissolving, one or
more contaminants from an environment. Such process utilizes components which are
inexpensive to use and easy to prepare. Another object of the present invention is to provide
a process for preparing a composition which utilizes a simple and effective method which
provides a composition having desirable properties such as enhanced capabilities for reducing
the concentration of, preferably removing or dissolving, a contaminant from an environment
when compared to a composition prepared by other methods.
A further object of the present invention is to provide an improved process of
reducing the concentration of, preferably removing or dissolving, a contaminant from an
environment.
An embodiment of the present invention is a novel composition prepared by a process
comprising contacting hydrogen peroxide, glycolic acid (also referred to as hydroxy acetic
acid), and water. Another embodiment of the present invention is a process of preparing a novel
composition comprising contacting hydrogen peroxide, glycolic acid, and water. The process
can further comprise contacting with one or more additional components such as isopropyl
alcohol.
A novel composition of the present invention can be used for reducing the
concentration of, preferably removing or dissolving, a wide variety of contaminants from a
wide variety of environments. Such contaminants can include Groups II- VIII of the Periodic
Table of the Elements, algae, fungi, bacteria, surfactants, natural gums, synthetic gums,
organic compounds, paper fillers, paper filters, clays, sulfites, sulfates, oxides, adhesives,
starches, and the like and combinations thereof. Such environments can include water-
containing systems, paper producing systems, pulp producing systems, printing systems,
packaging systems, flexographic systems, food processing systems, bleaching systems,
metallurgy systems, acid washing systems, veterinary product systems, pesticide systems,
meat processing systems, poultry processing systems, dairy processing systems, sanitizing
systems, and the like and combinations thereof. Such water-containing systems can include
swimming pools, water treating systems, drainage systems, boiler systems, chiller systems,
sewage treating systems, irrigation systems, agriculture systems, cooling tower systems, and
the like and combinations thereof.
Other objects and advantages of the present invention will become apparent from the
detailed description ofthe invention and the appended claims. DETAILED DESCRIPTION OF THE INVENTION
It has been discovered that the performance of a composition when reducing the
concentration of, preferably removing or dissolving, one or more contaminants from an
environment can be improved by utilizing a novel process of preparing such composition
which comprises contacting hydrogen peroxide and glycolic acid.
Generally, a process of preparing a composition of the present invention comprises
contacting hydrogen peroxide, glycolic acid, and water. The hydrogen peroxide is generally
present as a hydrogen peroxide solution comprising hydrogen peroxide and water. Such
hydrogen peroxide solution generally comprises at least about 0.1 weight percent hydrogen
peroxide in water and at most about 20 weight percent hydrogen peroxide in water, preferably
at least about 0.5 weight percent hydrogen peroxide in water and at most about 15 weight
percent hydrogen peroxide in water, and more preferably at least about 1 weight percent
hydrogen peroxide in water and at most about 15 weight percent hydrogen peroxide in water.
An example hydrogen peroxide solution which can be used in a process of the present
invention can be prepared by adding a stabilizing amount of water to a commercially
available 35 weight percent technical grade solution of hydrogen peroxide in water from FMC
Corporation, Philadelphia, Pennsylvania, to thereby obtain a hydrogen peroxide solution
suitable for use in a process ofthe present invention.
The water suitable for use in a process of the present invention is preferably a low
solids water generally comprising less than about 10 parts per million (ppm) dissolved solids,
preferably less than about 5 ppm dissolved solids, more preferably less than about 1 ppm
dissolved solids, and most preferably about 0 ppm dissolved solids. An example low solids
water which can be used in a process of the present invention can be obtained commercially
from PGT Inc., Cedar Hill, Texas, which is a low solids water produced by reverse osmosis
having less than about 0.1 ppm dissolved solids. The water, preferably low solids water, can be prepared by any suitable means known
in the art for preparing water which can be used in a process of the present invention.
Generally, the low solids water can be prepared by subjecting a high solids water to a treating
means selected from the group consisting of reverse osmosis, deionization, and the like and
combinations thereof. The high solids water generally comprises more dissolved solids than
the low solids water. Generally, the high solids water comprises more than about 200 ppm of
dissolved solids.
Generally, water is present in a stabilizing amount which allows for the contacting of
hydrogen peroxide and glycolic acid according a process as described herein. Generally, a
stabilizing amount of water as described herein should be large enough to prevent an
uncontrollable or unpredictable reaction between the hydrogen peroxide and glycolic acid
which can occur in a non-dilute environment as known in the art. However, a stabilizing
amount of water as described herein should be small enough to prevent the resulting
composition from being so dilute that such resulting composition no longer has the ability to
reduce the concentration of, preferably remove or dissolve, a contaminant from an
environment as described herein. Thus, a novel aspect of the present invention is the
presence of a stabilizing amount of water, preferably low solids water, which is large enough
to allow the contacting of such hydrogen peroxide and glycolic acid in a predictable and
controllable manner, yet, is small enough to prevent a significant dilution of the resulting
composition so that such composition is effective in reducing the concentration of, preferably
removing or dissolving, a contaminant from an environment as described herein.
Generally, a stabilizing amount of water, preferably low solids water, is present in an
amount of at least about 50 percent by weight water based on the total weight ofthe hydrogen
peroxide, glycolic acid, and water, and at most about 99.9 percent by weight water based on
the total weight of the hydrogen peroxide, glycolic acid, and water. Preferably, a stabilizing amount of water is present in an amount of at least about 60 percent by weight water based on
the total weight of the hydrogen peroxide, glycolic acid, and water, and at most about 97
percent by weight, and more preferably a stabilizing amount of water is present in an amount
of at least about 70 percent by weight water based on the total weight of the hydrogen
peroxide, glycolic acid, and water, and at most about 95 percent by weight water based on the
total weight ofthe hydrogen peroxide, glycolic acid, and water.
The glycolic acid is preferably a glycolic acid solution comprising glycolic acid and
water. Such glycolic acid solution generally comprises at least about 1 weight percent
glycolic acid and at most about 15 weight percent glycolic acid, preferably at least about 1
weight percent glycolic acid and at most about 10 weight percent glycolic acid, and more
preferably comprises at least about 1 weight percent glycolic acid and at most about 5 weight
percent glycolic acid. An example glycolic acid solution which can be used in a process of
the present invention can be obtained by adding low solids water as described herein to a
commercially available 70 weight percent technical grade solution of glycolic acid obtained
from DuPont Chemical, Wilmington, Delaware, to thereby obtain a 5 weight percent glycolic
acid solution.
The hydrogen peroxide, glycolic acid, and water can be contacted by any suitable
means and in any suitable order which provides for a composition of the present invention
effective in reducing the concentration of, preferably removing or dissolving, a contaminant
from an environment. Preferably, such contacting comprises mixing utilizing any suitable
mixing means known in the art for mixing an aqueous solution with another aqueous solution.
More preferably, a hydrogen peroxide solution as described herein is mixed with a glycolic
acid solution as described herein. During contacting, the weight ratio of hydrogen peroxide to
glycolic acid is generally at least about 1 :1 and at most about 30:1, preferably at least about 2:1 and at most about 20:1, more preferably at least about 2:1 and at most about 10:1, and
most preferably at least about 2:1 and at most about 6:1.
The temperature during contacting ofthe hydrogen peroxide, glycolic acid, and water,
preferably during the contacting of the hydrogen peroxide solution and glycolic acid solution,
can be any temperature which provides a composition effective in reducing the concentration
of, preferably removing or dissolving, a contaminant from the environment as described
herein. Generally, the temperature during contacting is at least about 0°F and at most about
100°F, preferably at least about 10°F and at most about 90°F, and more preferably at least
about 20°F and at most about 80°F. The pressure during contacting can be any pressure
which provides for a composition as described herein. The pressure is generally at least about
atmospheric and at most about 100 pounds per square inch absolute (psia), preferably about
atmospheric. The time period of contacting can be any time period capable of providing for a
composition as described herein. The time period of contacting is generally at least about 0.1
minute and at most about 60 minutes, preferably at least about 0.1 minute and at most about
30 minutes.
A process of providing a composition of the present invention can further comprise
contacting with an additional component comprising isopropyl alcohol. Generally, the
isopropyl alcohol has a purity of at least about 95 percent, preferably at least about 98 percent,
and more preferably at least about 99 percent.
In addition to, or in lieu of, contacting with isopropyl alcohol, a process of the present
invention can further comprise contacting with one or more components selected from the
group consisting of potassium monopersulfate, silver, acids, esters, alcohols, alpha hydroxy
acids, beta hydroxy acids, and the like and combinations thereof. Examples of suitable esters
include, but are not limited to, ethoxylated esters and the like and combinations thereof.
Examples of suitable acids include, but are not limited to, acetic, sulfuric, formic, peroxyacetic, and the like and combinations thereof. Examples of suitable alpha hydroxy and
beta hydroxy acids include, but are not limited to, citric, lactic, maleic, and the like and
combinations thereof.
Such additional component(s) can be added in any amount(s) as long as such
amount(s) provides a composition effective in reducing the concentration of, preferably
removing or dissolving, a contaminant from an environment as described herein. Generally,
when such additional component(s) is present, such additional component(s) is present in an
amount of at least about 0.1 weight percent based on the total weight of the final composition
and at most about 20 weight percent based on the total weight of the final composition,
preferably in an amount of at least about 0.1 weight percent based on the total weight of the
final composition and at most about 10 weight percent based on the total weight of the final
composition, and more preferably in an amount of at least about 0.1 weight percent based on
the total weight ofthe final composition and at most about 5 weight percent based on the total
weight ofthe final composition.
A preferred method of preparing a composition of the present invention comprises
mixing a 35 weight percent solution of hydrogen peroxide in water with a stabilizing amount
of low solids water comprising less than about 1 ppm dissolved solids to thereby provide a
resulting mixture comprising about 80 weight percent low solids water and the rest
comprising the hydrogen peroxide solution. The resulting mixture is then contacted with a 5
weight percent glycolic acid solution prepared by contacting a 70 weight percent glycolic acid
solution with low solids water comprising less than about 1 ppm dissolved solids to provide a
composition having a pH of about 1.9 to about 3.5. Such composition is particularly suitable
for use in reducing the concentration of, preferably removing or dissolving, calcium and
starch glues and organic substances and mineral residue typically found in corrugated box
manufacturing and printing and flexography processes. Another preferred method of preparing a composition of the present invention
comprises mixing a 35 weight percent solution of hydrogen peroxide in water with a
stabilizing amount of low solids water comprising less than about 1 ppm dissolved solids to
thereby provide a resulting mixture comprising about 43 weight percent low solids water and
the rest comprising the hydrogen peroxide solution. The resulting mixture is then contacted
with a 5 weight percent glycolic acid solution prepared by contacting a 70 weight percent
glycolic acid solution with low solids water comprising less than about 1 ppm dissolved
solids to provide a composition having a pH of about 1.9 to about 3.5. Such resulting
composition is particularly suitable for use in reducing the concentration of, preferably
removing or dissolving, contaminants typically found in water-containing systems.
An additional preferred process of preparing such composition is to further contact the
resulting composition with isopropyl alcohol having a purity of about 99 percent in an amount
to provide a resulting composition containing such isopropyl alcohol in an amount of about 5
weight percent based on the total weight ofthe final composition.
A composition of the present invention generally has a pH of at least about 1.5 and at
most about 4.5, preferably at least about 1.7 and at most about 4, and more preferably at least
about 1.9 and at most about 3.8.
A composition of the present invention generally has a specific gravity of at least
about 1.0 and at most about 1.5, preferably at least about 1.1 and at most about 1.4, more
preferably at least about 1.3 and at most about 1.4, and most preferably about 1.35.
While not intending to be bound by theory, it is believed that a composition of the
present invention comprises a molecule containing two carbon atoms, four hydrogen atoms,
and four oxygen atoms. It is further believed that two of the four hydrogen atoms and two of
the four oxygen atoms are present as hydroxyl groups (OH). A composition of the present invention prepared by a process of the present invention
described herein can be utilized to reduce the concentration of, preferably remove or dissolve,
a wide array of contaminants from a wide array of environments. Such process generally
comprises contacting such contaminant(s) with a concentration of a composition of the
present invention, prepared according to a process as described herein, in a concentration
effective in reducing the concentration of, preferably removing or dissolving, such
contaminant(s) from such environment. Examples of suitable contaminants include, but are
not limited to, elements of Groups II- VIII of the Periodic Table ofthe Elements (also referred
to as Group II elements, Group III elements, Group IV elements, Group V elements, Group
VI elements, Group VII elements, and Group VIII elements), algae, fungi, bacteria,
surfactants, natural gums, synthetic gums, organic compounds, paper fibers, paper filters,
clays, sulfites, sulfates, oxides, adhesives, starches, and the like and combinations thereof.
Examples of a suitable environment include, but are not limited to, water-containing
systems, paper producing systems, pulp producing systems, printing systems, packaging
systems, flexographic systems, food processing systems, bleaching systems, metallurgy
systems, acid washing systems, veterinary product systems, pesticide systems, meat
processing systems, poultry processing systems, dairy processing systems, sanitizing systems,
and the like and combinations thereof. The term "system" refers to any method, process,
apparatus, components, and the like and combinations thereof related in any way or manner to
the disclosed type of system. For example, the term "water-containing systems" refers to any
method, process, apparatus, components, and the like and combinations thereof known in the
art related in any way or manner to water containing or containment. Also for example, the
term "food processing systems" refers to any method, process, apparatus, components, and
the like and combinations thereof known in the art related in any way or manner to food
processing. Also for example, the term "printing systems" refers to any method, process, apparatus, components, and the like and combinations thereof known in the art related in any
way or manner to printing.
Examples of suitable water-containing systems include, but are not limited to,
swimming pools, water treating systems, drainage systems, boiler systems, chiller systems,
sewage treating systems, irrigation systems, agricultural systems, cooling tower systems, and
the like and combinations thereof.
A composition of the present invention can be contacted with one or more
contaminants as described herein by any suitable means and under any suitable conditions
which are effective in reducing the concentration of, preferably removing or dissolving, such
contaminants from an environment. The contacting condition, also referred to as the
contaminant contacting condition, which comprises a concentration of a composition as
described herein, a contacting temperature, a contacting pressure, and a contacting time
period can be any contacting condition effective in reducing the concentration of, preferably
removing or dissolving, a contaminant from an environment as described herein. The
contacting condition will generally depend on the type and concentration of contaminant and
type of environment. For example, the contacting condition will generally have an increased
composition concentration, temperature, pressure, and time period when the concentration of
one or more contaminants is increased compared to the contacting condition necessary when
such contaminants are present in a reduced concentration. For example, when a composition
of the present invention is used as a swimming pool shock treatment to help initially reduce
the concentration of, preferably remove or dissolve, a contaminant, the composition
concentration will be significantly increased and the time period decreased compared to when
a composition of the present invention is used to maintain the reduction in concentration of
contaminants in such swimming pool over, for example, a thirty day period. Selecting the proper contacting condition based on the concentration of contaminants within an
environment is within the skill in the art.
When the environment comprises a liquid medium, such as the water-containing
systems described herein, the concentration of composition is generally at least about 0.1 part
composition by volume per million parts environment (ppmv) and at most about 25 volume
percent, preferably at least about 0.5 ppmv and at most about 20 volume percent, and more
preferably at least about 1 ppmv and at most about 15 volume percent. When the
environment does not comprise a liquid medium, such as when the composition is applied
directly to a contaminant, the concentration of composition is generally at least about 0.1 part
composition by weight per million parts environment (ppm) and at most about 20 weight
percent, preferably at least about 0.5 ppm and at most about 10 weight percent, and more
preferably at least about 1 ppm and at most about 5 weight percent.
Generally, the contacting temperature, also referred to as the contaminant contacting
temperature, is at least about 50°F and at most about 200°F, preferably at least about 70°F
and at most about 150°F. The contacting pressure, also referred to as the contaminant
contacting pressure, is generally at least about atmospheric and at most about 100 pounds per
square inch absolute (psia), preferably about atmospheric. The contacting time, also referred
to as the contaminant contacting time, is generally at least about 0.1 minute and at most about
30 days, preferably at least about 0.5 minute and at most about 20 days, and more preferably
at least about 1 minute and at most about 10 days.
Examples of suitable uses of a composition of the present invention include, but are
not limited to, the following.
A composition of the present invention can be used as a descalant, biocide, slimicide,
flocculant, and the like and combinations thereof to reduce the concentration of, preferably remove or dissolve, scale, algae, and the like and combinations thereof from machinery and
apparatus used to produce paper and pulp.
A composition of the present invention can be used as a descalant, biocide and/or
algaecide to reduce the concentration of, preferably remove or dissolve, various contaminants
from water-containing systems used in the printing industry. For example, a composition of
the present invention can be used as a calcium and surfactant remover to reduce the
concentration of, preferably remove or dissolve, calcium, dissolved minerals, surfactants,
bacteria, and the like and combinations thereof from the lines and tanks of water-containing
systems used in the printing industries, packaging industries, and the like and combinations
thereof. Also for example, a composition of the present invention can be used to reduce the
concentration of, preferably remove or dissolve, various surfactants, natural gums, calcium
carbonate, polymer-containing residue, and the like and combinations thereof from
lithographic plate surfaces. A composition of the present invention can also be used as a
mbber roller rinse to reduce the concentration of, preferably remove or dissolve, organic
contaminants, water-based contaminants, and liquid metal precipitants including, but not
limited to, paper fiber, paper fillers, clay coatings, sulfites, sulfates, titanium dioxide,
chromium, barium, calcium carbonate, and the like and combinations thereof. The reduction
in concentration, preferably the removing or dissolving, of these contaminants results in
improved consistency of ink transfer and aids in restricting the neutralization of acid fountain
chemistries commonly used in lithography and lithographic processes.
A composition of the present invention can be used for reducing the concentration of,
preferably removing or dissolving, a contaminant such as scale, algae, fungi, bacteria,
minerals, and the like and combinations thereof from water-containing systems such as
water tanks, water lines, pumps, and the like and combinations thereof. Such contaminants
are known to exist in such water-containing systems commonly utilized in the printing and paper industries and the like because of the high contact rate with paper products which
contain mold, fungi spores and bacteria which are commonly found in the wood used to
produce such paper products.
A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, an adhesive, hi various processes, such as the process of
manufacturing corrugated boxes and packaging, glues and adhesives containing organic
compounds and starches are commonly used. A composition of the present invention can be
contacted, such as by spraying, with such glues and adhesives and, after a time period
effective for allowing a composition of the present invention to penetrate such glues and
adhesives, can thus provide for easy removal of such glues and adhesives.
A composition of the present invention can be used to treat anilox rolls, particularly
the cells contained by, or within, such anilox rolls, commonly found in flexographic
situations. Anilox rolls commonly utilized in flexographic situations commonly contain
organic substances of microscopic size found in various concentrations. There are various
methods of applying various compositions to remove such substances which include spraying
onto the surface being treated, mechanically applying to the surface, immersion treating, and
the like and combinations thereof. Utilizing a composition of the present invention provides
an improvement over existing technologies of cleaning anilox rolls which are currently being
used such as baking soda blasting, ultra-sonic cleaning, and utilizing chemicals of high
alkalinity concentration.
A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, various contaminants commonly found in food processing and
food packaging environments and the like.
A composition of the present invention can be used in waste sludge treatment
processes to help break down solids and provide biocide effects. A composition of the present invention can be used as an industrial biocide treatment
to kill various fungi such as the bottrus fungi, mold or bacteria.
A composition of the present invention can be used to enhance the bleaching
processes commonly found in the textile industries, paper and pulp industries, and the like
and combinations thereof.
A composition of the present invention can be used to enhance the effectiveness of
known descalants, slimicides, antimicrobials, and the like and combinations thereof.
A composition of the present invention can be used in fish farming and agricultural
processes as a pesticide for killing microorganisms and/or parasites, including bacteria and
fungi, found to exist within such processes. Such agricultural processes include, but are not
limited to, agricultural rendering and growing, including various related holding areas which
can contain such bacteria, fungi, and parasites.
A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, various contaminants commonly found in meat, poultry, and
dairy rendering and processing facilities.
A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, various contaminants commonly found in metallurgy
processes involving copper or other metals.
A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, various contaminants commonly found in processes
comprising the acid- washing of concrete.
A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, various contaminants commonly found in processes to produce
veterinary products. A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, various contaminants commonly found in beer processing
systems, wine processing systems, and the like such as removing contaminants from various
vats.
A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, various contaminants from the surfaces of automobiles such as
removing bug and tar residue from an external surface, e.g., a bumper, of a car or track.
A composition of the present invention can be used as an additive in various products
used in the cosmetic industry such as face-peel products.
A composition of the present invention can be used to reduce the concentration of,
preferably remove or dissolve, contaminants such as calcium-based and organic-based
substances commonly found in the marine industry such as from the external surfaces of
ships.
Preferably, a composition of the present invention is used to reduce the concentration
of, preferably remove or dissolve, contaminants from printing systems. A composition of the
present invention can be used in addition to, or preferably as an alternative to, various
mechanical means and the use of various solvents and/or various surfactants, such as sodium
hydroxide, to remove such contaminants.
Also preferred, a composition ofthe present invention is used as a sanitizer, fungicide,
algaecide, and the like and combinations thereof to reduce the concentration of, preferably
remove or dissolve, contaminants from water-containing systems such as swimming pools,
water gardens, and the like and combinations thereof. A composition ofthe present invention
can be used in addition to, or preferably as an alternative to, chlorine-based, or bromide-
based, or biguianide-based compositions. Also preferred, a composition ofthe present invention is used as a sanitizer, fungicide,
algaecide, and the like and combinations thereof to reduce the concentration of, preferably
remove or dissolve, contaminants from water-containing systems commonly found in
municipal water treating systems, commercial drainage systems, industrial boiler systems,
industrial chiller systems, cooling tower systems, and the like and combinations thereof. A
composition ofthe present invention can be used in addition to, or preferably as an alternative
to, chlorine-based, or bromide-based, or biguianide-based compositions.
The following examples are presented to further illustrate this invention and are not to
be constmed as unduly limiting the scope of this invention.
EXAMPLE I
This example illustrates a preparation of a composition ofthe present invention.
A 55-gallon quantity of a composition of the present invention was prepared by
mixing 8.25 gallons of 35 weight percent hydrogen peroxide solution (obtained from FMC
Corporation, Philadelphia, Pennsylvania, as a 35 weight percent technical grade solution of
hydrogen peroxide in water) with 34.675 gallons of low solids water comprising less than
about 0.1 ppm dissolved solids (obtained from PGT Inc., Cedar Hill, Texas, the low solids
water had been produced by reverse osmosis) at room temperature (about 70°F) and
atmospheric pressure to thereby provide a resulting mixture. Total mixing time was about 15
minutes. The resulting mixture was then contacted with 11.55 gallons of a 5 weight percent
glycolic acid solution which had been prepared by contacting 0.825 gallons of approximately
70 weight percent glycolic acid solution (obtained from DuPont Chemical, Wilmington,
Delaware, as a 70 weight percent technical grade solution of glycolic acid in water) with
10.725 gallons of low solids water comprising less than about 0.1 ppm dissolved solids
(obtained from PGT Inc., the low solids water had been produced by reverse osmosis) at room temperature (about 70°F) and atmospheric pressure to thereby obtain about 55 gallons
of a composition of the present invention referred to herein as "Composition A" having a pH
of about 3.3.
EXAMPLE II
This example illustrates the use of a composition of the present invention
(Composition A as described herein) to reduce the concentration of, preferably remove or
dissolve, calcium and/or starch glues and substances from corrugating equipment used in
manufacturing corrugated boxes.
Equipment was obtained from Packaging Corporation of America (PC A) located in
Waco, Texas and had been in use for several years. A significant amount of glue residue
(color of such residue was a dirty- white due to the glue drying to a semi-translucent
appearance over time) was observed. A significant concentration of glue residue was located
on a cross-member of the adhesive application device of such equipment about 10 inches
under the glue applicator which applied the glue to the web paperboard to form a corrugated
box sheet. The glue residue level had accumulated to such an extent that production
problems were encountered. PC A had requested assistance from several chemical companies
to develop a product which would remove or allow removal ofthe glue residue. It is believed
that twenty unsuccessful attempts were made by the various chemical vendor companies to do
so. Composition A was then applied directly to the glue residue using a trigger sprayer
Within about 5 minutes, the semi-translucent appearance of the glue residue turned to a white
color as such glue residue originally appeared (i.e., the appearance of the glue before it dried).
Layer by layer the accumulated glue residue turned white. Within about 20 minutes, the
layers of residue were all visibly re-hydrated and could be removed by hand by peeling each
layer from the cross-member. When Composition A reached the bottom layer of residue which had been estimated as having initially formed over 20 years prior, such bottom layer
was able to be removed which enabled the equipment to be operated again. Overall,
maintenance problems for the equipment based on glue residue was minimized. Before the
application of Composition A, the preferred and possibly only means to remove this residue
was with a hammer and chisel. The hammer and chisel were used to chisel the layers away
from the cross-member section ofthe adhesive application device.
EXAMPLE III
This example illustrates another use of a composition of the present invention
(Composition A as described herein) to remove organic substances and mineral residue from
equipment such as anilox rolls used in flexography processes.
Equipment utilizing anilox rolls was provided by Packaging Corporation of America
(PCA) located in Waco, Texas. Such equipment had been used for several years. An
inherent problem which exists in flexography processes is various contaminants have a
tendency to accumulate and bond to small laser-etched cells within the anilox rolls. These
cells supply water and solvent-based flexography inks to the raised image photo-polymer
printing plate. After removal of excess flexography inks, there are multiple procedures used
to remove sealants and residue from the anilox rolls. The anilox rolls of the PCA equipment
had various mineral and ink component deposits which could not be easily removed by
previous methods, such as baking soda blasting and using ultrasound equipment.
In a first method, Composition A was sprayed directly onto the surface of the anilox
roll cells having a concentration of 145 cells per linear inch of anilox roll. The anilox roll
was hydrated with Composition A and remained hydrated for about 5 minutes. Thereafter, a
standard aqueous-based flexographic wash was used to rinse the contamination out of the
cells. The application of Composition A appeared to decompose the bonded minerals and deposits, allowing such bonded minerals and deposits to be removed by washing with normal
alkaline types of flexography wash. This process allowed for recovery of cell depth and cell
volume of the anilox rolls. Composition A allowed for the anilox equipment to be cleaned on
press, without the costly purchase of cleaning equipment, which provided a reduction in
down-time and capital expenditure costs for PCA.
The second method of applying Composition A was by adding Composition A to the
flexography printing unit ink reservoir contacting the ink pump. The contact time was about
five minutes followed by rinsing using standard aqueous-based flexographic wash
procedures. Previously, methods such as baking soda blasting and using ultrasound
equipment were utilized, but had only cleaned the surface ofthe anilox cells. Composition A
performed better than such previous methods and opened the cells to a like-new condition.
EXAMPLE IV
This example illustrates another preparation of a composition ofthe present invention.
A 55-gallon quantity of a composition of the present invention was prepared by
mixing 18.15 gallons of a 35 weight percent hydrogen peroxide solution (obtained from FMC
Corporation, Philadelphia, Pennsylvania, as a 35 weight percent technical grade solution of
hydrogen peroxide in water) with 13.75 gallons of low solids water comprising less than
about 0.1 ppm dissolved solids (obtained from PGT Inc., Cedar Hill, Texas, the low solids
water had been produced by reverse osmosis) at room temperature (about 70°F) and
atmospheric pressure to thereby provide a resulting mixture. Total mixing time was about 15
minutes. The resulting mixture was then contacted with 23.1 gallons of a 5 weight percent
glycolic acid solution which had been prepared by contacting 1.65 gallons of 70 weight
percent glycolic acid solution (obtained from DuPont Chemical, Wilmington, Delaware, as a
70 weight percent technical grade solution of glycolic acid in water) with 21.45 gallons of low solids water comprising less than about 0.1 ppm dissolved solids (obtained from PGT
Inc., Cedar Hill, Texas, the low solids water had been produced by reverse osmosis) at room
temperature (about 70°F) and atmospheric pressure to thereby obtain about 55 gallons of a
composition of the present invention referred to herein as "Composition B" having a pH of
about 2.2.
EXAMPLE V
This example illustrates a use of a composition of the present invention (Composition
B as described herein) to remove residue and bacterial growth and fungi from a printing press
fountain solution recirculating system (a water-containing system).
A printing press was obtained from Rock Tenn Company, Waxahachie, Texas, and
contained a Man Roland fountain solution recirculating system, also referred to as a
dampening system, which comprised a blender, chiller, and recirculating unit containing an
approximately 30 gallon reservoir with a total capacity of 200 gallons of water. The
equipment has been used almost continuously for about 20 years. A significant amount of
mineral substance residue, such as mineral deposits consisting of calcium and lime deposits,
and bacterial and fungi growth was observed, including hair algae, which were white, green,
brown and various other colors which are common to the industry. Various solvents had been
used in an attempt to remove the residue and growth before such residue had accumulated and
caused production interraptions. Common industry products used for cleaning such printing
press recirculating systems included products comprising a mixture of sodium hydroxide,
glycol ethers, and various biocides, such as those sold by various chemical manufacturers,
including Varn International (a worldwide chemical manufacturer which manufactures
pressroom and printing chemicals and distributes such products throughout the world). However, use of such solvents was unsuccessful in removing the mineral residue and
bacterial and fungal growth. The mineral residue and growth had accumulated to a point that
such had become hardened within the water lines and could not be removed. The lines had
become plugged, making production difficult. An additional option of replacing the water
lines and/or flushing the water system with bleach would have been an option, but the amount
of water which would have to be consumed would have amounted to thousands of gallons of
water. In addition, production-related issues resulting from bleach residue would have been
difficult to alleviate, making the bleaching option undesirable and economically unfeasible.
A five-gallon quantity of Composition B described herein was supplied for the
following procedure. Composition B was poured directly, in one-pint quantities, into each of
the six water trays of the recirculating system. Upon contact of Composition B with the
mineral residue and bacterial and algae growth, it was observed that within about 15 to 30
seconds, water immediately began flowing in the return line from the press back to the
recirculating system indicating that Composition B was removing the various contaminants.
Then, the drain ofthe recirculating system became unplugged so that water could easily flow.
An additional four-gallon quantity of Composition B was then added directly to the 30-gallon
reservoir. Within about 15 to 30 seconds, water immediately began flowing in the return line
from the press back to the reservoir indicating that Composition B was removing the various
contaminants. It was observed that the substance being removed by Composition B contained
paper dust, slime, fungus, algae, ink components, and the like. About 35 gallons of such
substance were collected in an empty barrel. In about 30 minutes, about 200 gallons of fresh
water were passed through the water system to further help remove the debris and remains of
dead algae and bacterial growth and minerals which had been dislodged and/or dissolved by
Composition B. The recirculating system was then recharged with a standard fountain solution having
a pH of about 3.8. The press was immediately placed into production. Normal startup
recovery time had previously been about 20 to 25 printed sheets before production. After use
of Composition B, startup recovery time was about 2 to 3 sheets. It is believed that the better
startup was because the pH of Composition B was at or near the recommended pH of the
fountain solution. Before use of Composition B, products previously used comprised sodium
hydroxide, glycol ethers and biocides, with some of these products containing foaming agents
or alkalines such as caustic soda. The residual pH left in the water system after using
traditional cleaning products would normally be in a range of about 9 to about 10.5. Thus,
since the pH of fountain solutions is typically in a range of about 3.8 to about 4.0 and since
Composition B has a similar residual pH, use of Composition B provides a direct benefit to
production ability, print quality, and reduction of water costs.
EXAMPLE VI
This example illustrates a use of a composition of the present invention (Composition
B as described herein) to remove a contaminant from a swimming pool.
The test site consisted of a swimming pool which contained 25,000 gallons of water
which was substantially free of chlorine and other chemical substances. The swimming pool
was rectangular in shape with a shallow end depth of approximately three feet and a deep end
depth of approximately nine feet. The swimming pool had been covered and dormant for
about nine months. Before treatment, the water appeared blackish in color and emitted a
strong foul odor. The surface areas of the pool under water were covered with a green algae
growth which was about 1.5 inches thick. The green algae growth appeared to cover an
underlying gray-colored algae-type substance. Due to the extensive algae growth, the bottom
surface of the pool and the surfaces of the first and second steps of the pool were not visible. The filter media contained in the swimming pool filtration system was diametaceous earth.
The pH ofthe water was 7.2 and the temperature ofthe water was about 78°F.
A ten-gallon quantity of Composition B described herein was then added to the pool
by pouring Composition B at a steady rate into the pool from a plastic bucket while walking
around the edges of the pool from the shallow to the deep end. After approximately twenty-
five minutes, the color of the water turned to a light green "pea-soup" color. Debris began to
float to the top and such debris appeared to be large pieces of the green algae and gray-
colored algae-type substance. The clarity of the water continued to improve. After
approximately twenty-four hours, the water appeared to be somewhat cloudy or "milky" in
color. The green algae and gray-colored algae-type substance appeared to have been "killed"
with the remains of such algae appearing as a white skeletal debris which covered the bottom
ofthe pool with some of the debris floating on top. The pH ofthe pool was 6.8. A flocculent
was then added in an amount of about two fluid quarts to aid in the removal of the floating
debris. After approximately seventy-two hours from the addition of Composition B, the
bottom of the pool was vacuumed and the vacuumed debris was exhausted into an area next
to the pool. The pH of the pool was 6.8. Tap water was then added to the pool until the pH
of the pool water was 7.0.
The pool water remained uncovered, dormant, and was not circulated for two weeks.
After the two- week period, the dissolved oxygen (DO) was 106 parts per million (ppm), the
water appeared to very clear (the bottom surface of the deep end was visible), and the pump
used to circulate the pool water was started and set to circulate the pool water for two hours
each day. One week later (three weeks total time from the addition of Composition B), which
included a two-inch rain, the DO was 98 ppm. After one more week (four weeks total time
from the addition of Composition B), the DO was 44 ppm. The water was still clear, but several small areas of green algae growth on the surface areas of the pool underwater were
observed.
A 2.5 gallon "maintenance dose" of Composition B described herein was then added
to the pool by pouring from a plastic bucket at one end of the pool After adding, the DO was
100 ppm (which was the desired reading) and the pH was 7.4. The pool was then maintained
at a dosage rate of 2.5 gallons of Composition B added every two weeks.
EXAMPLE VII
This example demonstrates the effect of various increases in concentration of a
composition ofthe present invention.
Two test sites (1 and 2) were utilized to determine the toxicity of a composition of the
present invention. Test site 1 consisted of an outdoor water garden comprising a circular-
shaped fiberglass molded tank having a diameter of about 5 feet and which contained
approximately 500 gallons of water. The tank also contained soil, rock, several bricks, and 36
minnows. The water was foul-smelling and black in color. A substance which appeared to
be a black mold or algae covered the soil and rocks at the bottom ofthe tank.
An eight fluid ounce quantity of Composition B described herein was then
added to the tank by pouring Composition B directly from a plastic bottle into the water at
one end of the tank . The temperature of the water during addition was about 78°F. Upon
addition, the water immediately began to bubble. The bubbling began on one end of the tank
and proceeded to the other end of the tank within about 15 minutes. After 24 hours had
elapsed, the water appeared to be clear and the bricks and rock contained within the tank were
completely visible and were no longer covered with the black mold or algae. The minnows
appeared to be unaffected by the addition of Composition B. Skeletal debris appeared to
cover the bottom of the tank. A pH reading and dissolved oxygen reading were not obtained. Based on the observations, a recommended dosage rate of eight ounces of Composition B
applied every two to three weeks was developed.
Test site 2 consisted of a standard 29-gallon aquarium containing six gallons of
crashed coral gravel. To such aquarium was charged 29 gallons of reverse osmosis treated
water. The pH was 8.0. The growth medium used in the tank included a General Electric
brand Gro-Lite bulb (which had a UV spectrum similar to sunlight) and TETRA-MIN tropical
fish food. The water was allowed to cycle through the aquarium for about five days without
the addition of any chemicals, live fish, or plants. After five days, twenty-four small bait
shop minnows were added to the water and left alone for about two days (about 48 hours).
Then, Composition B was added in an amount of 100 parts Composition B by weight per
million parts water (i.e., 100 ppm). About thirty minutes after such addition, the dissolved
oxygen level was 106 ppm.
After twenty-four hours, the dissolved oxygen level was about 44 ppm and an
additional 200 ppm amount of Composition B was added. After thirty minutes, the dissolved
oxygen was about 210 ppm. The minnows were observed to be swimming near the bottom
of the tank. After an additional twenty-four hours, the dissolved oxygen was 86 ppm. An
additional 500 ppm amount of Composition B was then added. Thereafter, a reading for the
dissolved oxygen could not be obtained because the dissolved oxygen was so high that the
titration medium being used (sodium thiosulfate) kept turning black which prevented an
accurate dissolved oxygen reading from being obtained. Even after six hours had passed and
over 600 ppm of sodium thiosulfate had been used, a dissolved oxygen reading still could not
be obtained.
No additional chemicals were added to the tank for a period of four days. After ten
days had passed from the initial application of Composition B, the fish present in the tank
began to expire at a rate of about one fish per day over the next two weeks. The scales of about three ofthe fish appeared to be expanded away from the bodies of such fish. After four
weeks had passed since the initial application of Composition B to the tank, the water was
still very clear and free of algae growth. The dissolved oxygen was 44 ppm.
The results shown in the above examples clearly demonstrate that the present
invention is well adapted to carry out the objects and attain the ends and advantages
mentioned as well as those inherent therein.
Reasonable variations, modifications, and adaptations can be made within the scope
ofthe disclosure and the appended claims without departing from the scope of this invention.

Claims

WHAT IS CLAIMED IS: 1. A process of producing a composition comprising contacting hydrogen
peroxide, glycolic acid, and water wherein said water is present in an amount of least about
50 weight percent based on the total weight of said hydrogen peroxide, glycolic acid, and
water and at most about 99.9 weight percent based on the total weight of said hydrogen
peroxide, glycolic acid, and water.
2. The process according to claim 1 wherein the weight ratio of said hydrogen peroxide to said glycolic acid is at least about 1 : 1 and at most about 30:1.
3. The process according to claim 1 wherein the weight ratio of said hydrogen peroxide to said glycolic acid is at least about 2:1 and at most about 20:1.
4. The process according to claim 1 wherein the weight ratio of said hydrogen peroxide to said glycolic acid is at least about 2:1 and at most about 10:1.
5. The process according to claim 1 wherein said hydrogen peroxide is present as a hydrogen peroxide solution of said hydrogen peroxide and said water and wherein said
hydrogen peroxide solution comprises at least about 0.1 weight percent said hydrogen
peroxide and at most about 20 weight percent said hydrogen peroxide, and further wherein said glycolic acid is present as a glycolic acid solution of said glycolic acid and said water and
wherein said glycolic acid solution comprises at least about 1 weight percent said glycolic
acid and at most about 15 weight percent said glycolic acid.
6. The process according to claim 1 wherein said hydrogen peroxide is present as
a hydrogen peroxide solution of said hydrogen peroxide and said water and wherein said
hydrogen peroxide solution comprises at least about 0.5 weight percent said hydrogen peroxide and at most about 15 weight percent said hydrogen peroxide, and further wherein said glycolic acid is present as a glycolic acid solution of said glycolic acid and said water
wherein said glycolic acid solution comprises at least about 1 weight percent said glycolic
acid and at most about 10 weight percent said glycolic acid.
7. The process according to claim 1 further comprising contacting with isopropyl
alcohol.
8. The process according to claim 7 wherein said isopropyl alcohol has a purity
of at least about 99 percent.
9. The process according to claim 2 wherein said water is present in an amount of
least about 60 weight percent based on the total weight of said hydrogen peroxide, glycolic
acid, and water and at most about 97 weight percent based on the total weight of said
hydrogen peroxide, glycolic acid, and water.
10. The process according to claim 1 wherein said hydrogen peroxide is present as a hydrogen peroxide solution of said hydrogen peroxide and said water and wherein said
hydrogen peroxide solution comprises at least about 1 weight percent said hydrogen peroxide
and at most about 15 weight percent said hydrogen peroxide, and further wherein said
glycolic acid is present as a glycolic acid solution of said glycolic acid and said water and
wherein said glycolic acid solution comprises at least about 1 weight percent said glycolic
acid and at most about 5 weight percent said glycolic acid.
11. The process according to claim 1 wherein said water is present in an amount of
least about 70 weight percent based on the total weight of said hydrogen peroxide, glycolic
acid and water and at most about 95 weight percent based on the total weight of said
hydrogen peroxide, glycolic acid and water.
12. The process according to claim 1 further comprising contacting with a
component selected from the group consisting of potassium monopersulfate, silver, acids,
esters, alcohols, alpha hydroxy acids, beta hydroxy acids, and combinations thereof.
13. The process according to claim 12 wherein said acids are selected from the
group consisting of acetic, sulfuric, formic, peroxyacetic, and combinations thereof.
14. The process according to claim 12 wherein said alpha hydroxy and beta
hydroxy acids are selected from the group consisting of citric, lactic, maleic, and
combinations thereof.
15. The process according to claim 1 wherein said composition has a pH of at least about 1.5 and at most about 4.5.
16. The process according to claim 1 wherein said composition has a specific gravity of at least about 1.0 and at most about 1.5.
17. A composition prepared by the process of contacting hydrogen peroxide, glycolic acid, and water wherein said water is present in an amount of least about 50 weight
percent based on the total weight of said hydrogen peroxide, glycolic acid, and water and at
most about 99.9 weight percent based on the total weight of said hydrogen peroxide, glycolic
acid, and water.
18. The composition according to claim 17 wherein the weight ratio of said
hydrogen peroxide to said glycolic acid is at least about 1 : 1 and at most about 30:1.
19. The composition according to claim 17 wherein the weight ratio of said hydrogen peroxide to said glycolic acid is at least about 2:1 and at most about 20: 1.
20. The composition according to claim 17 wherein the weight ratio of said hydrogen peroxide to said glycolic acid is at least about 2:1 and at most about 10:1.
21. The composition according to claim 17 wherein said hydrogen peroxide is present as a hydrogen peroxide solution of said hydrogen peroxide and said water and wherein said hydrogen peroxide solution comprises at least about 0.1 weight percent said hydrogen peroxide and at most about 20 weight percent said hydrogen peroxide, and further wherein said glycolic acid is present as a glycolic acid solution of said glycolic acid and said water and wherein said glycolic acid solution comprises at least about 1 weight percent said glycolic acid and at most about 15 weight percent said glycolic acid.
22. The composition according to claim 17 wherein said hydrogen peroxide is present as a hydrogen peroxide solution of said hydrogen peroxide and said water and wherein said hydrogen peroxide solution comprises at least about 0.5 weight percent said hydrogen peroxide and at most about 15 weight percent said hydrogen peroxide, and further wherein said glycolic acid is present as a glycolic acid solution of said glycolic acid and said water wherein said glycolic acid solution comprises at least about 1 weight percent said glycolic acid and at most about 10 weight percent said glycolic acid.
23. The composition according to claim 17 wherein the process further comprises contacting with isopropyl alcohol.
24. The composition according to claim 23 wherein said isopropyl alcohol has a purity of at least about 99 percent.
25. The composition according to claim 18 wherein said water is present in an amount of least about 60 weight percent based on the total weight of said hydrogen peroxide, glycolic acid, and water and at most about 97 weight percent based on the total weight of said
hydrogen peroxide, glycolic acid, and water.
26. The composition according to claim 17 wherein said hydrogen peroxide is
present as a hydrogen peroxide solution of said hydrogen peroxide and said water and
wherein said hydrogen peroxide solution comprises at least about 1 weight percent said
hydrogen peroxide and at most about 15 weight percent said hydrogen peroxide, and further
wherein said glycolic acid is present as a glycolic acid solution of said glycolic acid and said
water and wherein said glycolic acid solution comprises at least about 1 weight percent said
glycolic acid and at most about 5 weight percent said glycolic acid.
27. The composition according to claim 17 wherein said water is present in an
amount of least about 70 weight percent based on the total weight of said hydrogen peroxide, glycolic acid and water and at most about 95 weight percent based on the total weight of said hydrogen peroxide, glycolic acid and water.
28. The composition according to claim 17 wherein the process further comprises
contacting with a component selected from the group consisting of potassium
monopersulfate, silver, acids, esters, alcohols, alpha hydroxy acids, beta hydroxy acids, and
combinations thereof.
29. The composition according to claim 28 wherein said acids are selected from
the group consisting of acetic, sulfuric, formic, peroxyacetic, and combinations thereof.
30. The composition according to claim 28 wherein said alpha hydroxy and beta
hydroxy acids are selected from the group consisting of citric, lactic, maleic, and
combinations thereof.
31. The composition according to claim 17 wherein said composition has a pH of at least about 1.5 and at most about 4.5.
32. The composition according to claim 17 wherein said composition has a
specific gravity of at least about 1.0 and at most about 1.5.
33. A composition comprising a molecule consisting of two carbon atoms, four
hydrogen atoms, and four oxygen atoms.
34. A composition according to claim 33 wherein two of said four hydrogen atoms and two of said four oxygen atoms are present as hydroxyl groups.
35. A process of removing or dissolving a contaminant from an environment comprising:
selecting a composition of hydrogen peroxide, glycolic acid, and water, wherein said water is present in an amount of least about 50 weight percent based on the total weight of
said hydrogen peroxide, glycolic acid, and water and at most about 99.9 weight percent based on the total weight of said hydrogen peroxide, glycolic acid, and water to provide a
composition and
contacting said contaminant with a concentration of said composition, wherein said
concentration is effective in removing at some of said contaminant from said environment.
36. A process according to claim 35 wherein said contaminant is selected from the
group consisting of Group II elements, Group III elements, Group IV elements, Group V
elements, Group VI elements, Group VII elements, Group VIII elements, algae, fungi,
bacteria, surfactants, natural gums, synthetic gums, organic compounds, paper fibers, paper
filters, clays, sulfites, sulfates, oxides, adhesives, starches, and combinations thereof.
37. A process according to claim 35 wherein said environment is selected from the
group consisting of water-containing systems, paper producing systems, pulp producing
systems, printing systems, packaging systems, flexographic systems, food processing systems,
bleaching systems, metallurgy systems, acid washing systems, veterinary product systems,
pesticide systems, meat processing systems, poultry processing systems, dairy processing
systems, sanitizing systems, and combinations thereof.
38. A process according to claim 37 wherein said water-containing systems are
selected from the group consisting of swimming pools, water treating systems, drainage
systems, boiler systems, chiller systems, sewage treating systems, irrigation systems, agricultural systems, cooling tower systems, and combinations thereof.
39. A process according to claim 35 wherein said contaminant comprises algae
and said environment comprises a water-containing system.
40. A process according to claim 39 wherein said water-containing system comprises a swimming pool.
41. A process according to claim 35 wherein said contaminant comprises a Group
II element and said environment comprises a printing system.
42. A process according to claim 35 wherein said contaminant comprises a Group
II element and said environment comprises a packaging system.
43. A process according to claim 35 wherein said contaminant comprises a starch
and said environment comprises a packaging system.
44. A process of producing a composition comprising contacting hydrogen
peroxide, glycolic acid, and water wherein said water is present in an amount of least about
50 weight percent based on the total weight of said hydrogen peroxide, glycolic acid, and
water.
EP01961943A 2000-08-04 2001-08-03 Method of making a composition, a product from such method, and the use thereof in removing or dissolving a contaminant from an environment Expired - Lifetime EP1409632B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CY20071101329T CY1107765T1 (en) 2000-08-04 2007-10-15 A METHOD FOR CREATING A COMPOSITION, A PRODUCT FROM A COMPLETE METHOD, AND ITS USE FOR REMOVING OR SOLVING A SINGLE SOLUTION

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US22306400P 2000-08-04 2000-08-04
US223064P 2000-08-04
PCT/US2001/024775 WO2002012428A1 (en) 2000-08-04 2001-08-03 Method of making a composition, a product from such method, and the use thereof in removing or dissolving a contaminant from an environment

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP06025103 Division 2006-12-05

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JP (2) JP5614912B2 (en)
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AU (1) AU8316501A (en)
BR (1) BR0113031B1 (en)
CA (1) CA2417927C (en)
CY (1) CY1107765T1 (en)
DE (1) DE60129477T2 (en)
DK (1) DK1409632T3 (en)
ES (1) ES2288980T3 (en)
IL (2) IL154269A0 (en)
MX (1) MXPA03001038A (en)
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US7029588B2 (en) * 2003-03-19 2006-04-18 Samuel Rupert Owens Oxidizing solution and process for contaminants
US8398781B2 (en) * 2004-08-27 2013-03-19 Ecolab Usa Inc. Methods for cleaning industrial equipment with pre-treatment
GEP20237469B (en) * 2020-11-10 2023-02-10 Dzala Llc Novel compositions for neutralizing toxic effects of hydrogen peroxide in living cells or tissues
DE102021129678A1 (en) 2021-11-15 2023-05-17 Knieler & Team Gmbh Ready-to-use aqueous disinfectant composition

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PL199174B1 (en) 2008-08-29
PL366164A1 (en) 2005-01-24
WO2002012428A1 (en) 2002-02-14
JP5976731B2 (en) 2016-08-24
MXPA03001038A (en) 2004-09-10
JP2004519529A (en) 2004-07-02
EP1409632B1 (en) 2007-07-18
ATE367431T1 (en) 2007-08-15
JP5614912B2 (en) 2014-10-29
JP2014224265A (en) 2014-12-04
NZ524399A (en) 2006-03-31
IL154269A0 (en) 2003-09-17
CA2417927A1 (en) 2002-02-14
NZ545460A (en) 2008-07-31
DK1409632T3 (en) 2007-11-12
ES2288980T3 (en) 2008-02-01
EP1409632A4 (en) 2004-08-25
IL154269A (en) 2007-03-08
CA2417927C (en) 2012-05-22
BR0113031B1 (en) 2012-01-24
BR0113031A (en) 2004-11-09
CY1107765T1 (en) 2013-04-18
ZA200300973B (en) 2004-07-28
CN1447852A (en) 2003-10-08
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AU8316501A (en) 2002-02-18
PT1409632E (en) 2007-10-11

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