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Post Info TOPIC: Making Roof Cleaning Chemical Thicker.
Apple Roof Cleaning Tampa FL (813) 655-8777


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Making Roof Cleaning Chemical Thicker.
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Thickening AppleSauce ?? - Apr 26th, 07, 07:09 PM
 
 
We have been asked HOW to thicken up the Apple Sauce Roof Cleaning Product for longer cling on really steep roofs.

Here is some good reading about thickening Apple Sauce Roof Cleaning Chemical!
The basics taught here should apply to most any roof cleaning product.

The thickeners employed according to the present invention are inorganic materials which do not interact with Sodium hypochlorite. These materials, in finely ground form, are stirred into the hypochlorite solution to form stable, viscous suspensions. Materials suitable for this purpose include natural colloidal clays, synthetic clay products, metal oxides, alkaline earth metal carbonates, silica derived products and mixtures thereof. The thickener level ranges from about 5% to about 70%. It is important to note that the inorganic thickeners utilized be relatively free from heavy metal ion impurities in order to prevent catalytic hypochlorite decomposition and a resultant buildup of gaseous reaction products.

The natural clays applicable to our invention fall primarily into two major groups, namely attapulgites and smectites (montmorillonites). Attapulgites, for example, are represented by the Attagel based clays of the Engelhard Minerals & Chemicals Corp. and smectites are represented by alkali and alkaline earth metal bentonites such as Imvite FGB from Industrial Mineral Ventures, Inc.

Synthetic clay products are exemplified by multi-layered silicates similar in structure to natural smectite clays. Such synthetic clays are available under the trade name of Barasym Synthetic Minerals from NL-Industries. These materials vary in electrolyte sensitivity and must be individually selected to produce optimum physical stability of the thickened hypochlorite pastes.

It is critical in order to produce a stable hypochlorite paste that the level of thickeners be maintained within certain limits. For Attagel, the critical level is from about 10% to about 18% by weight of the composition. The critical range for Bentonite is about 7% to about 40% and for Barasym-PNS the critical range is about 7% to about 20%.

Viscosities from about 25,000 CPS to greater than 2,000,000 CPS of the paste may be obtained by using these critical limits.

Metal oxides are exemplified by zinc oxide, titanium dioxide, calcium oxide, magnesium oxide and the like. It is critical that the level of zinc oxide (J. T. Baker Chem. Co., Zinc Oxide Powder, Analyzed Reagent) when used alone as a thickener be maintained at about 55% by weight of the composition to obtain a stable product. Below the 55% level of zinc oxide, the paste composition separates rapidly whereas above 55% the composition loses its paste characteristics, solidifies rapidly and becomes difficult to stir and work with. The critical level for titanium dioxide (J. T. Baker Chem. Co., Titanium Dioxide CP, Analyzed Reagent) is about 50% to about 55% and for magnesium oxide (Fluka A. G., Magnesium Oxide puriss, p.a.) the critical level is about 50% to about 58%, the viscosity obtained therefrom in both cases being about 2,000,000 CPS. It is to be understood that the critical levels of these metal oxides would, of course, require adjustment with a change in particle size.

Typical alkaline earth metal carbonates, of the type used in the compositions of instant invention, are calcium carbonate and magnesium carbonate. The critical range for alkaline earth metal carbonates, e.g., calcium carbonate, is about 60% to about 68% by weight of the composition, the viscosity obtained therefrom being about 40,000 to about 200,000 CPS.

Silica derived products are represented by fumed silicas and pulverized amorphous silica gels. An example of the latter are the Syloid brand silicas of W. R. Grace & Co.

The critical range for colloidal silica, e.g., Syloid-244, is about 11% to about 20% by weight of the composition, the viscosity obtained therefrom being about 30,000 to about 700,000 CPS.

In addition to the inorganic thickening agent, the compositions may also contain alkaline and sequestering agents. It is well known in the art that hypochlorite decomposition and the loss of available chlorine can be slowed by maintaining the hypochlorite containing system at a relatively high pH, e.g. about 12.5 to 13.0. To maintain the required high pH, alkaline agents such as sodium, potassium, calcium or magnesium hydroxide and the like, may be added to the compositions. It should be understood that it is only the chlorine stability of the hypochlorite paste which is dependent on the pH of the composition, the viscosity and physical stability of the paste, per se, being independent of the high pH.

The presence of traces of heavy metals may catalyze hypochlorite decomposition and further induce chlorine losses. To minimize such losses, sequestering agents which do not react with hypochlorite may be incorporated in the composition of the instant invention, e.g., polyphosphates, such as tetrapotassium pyrophosphate or sodium tripolyphosphate.

The following examples, without limitation on the scope thereof, further illustrate our invention. All proportions and percentages herein and in the appended claims are by weight unless specified otherwise.

EXAMPLE I

A thick, free flowing, physically stable paste was obtained by mechanically mixing the following. The term "stable" or "stability" as used herein indicates that the composition essentially remains physically unchanged, the change in available chlorine level being substantially the same as in a corresponding unthickened hypochlorite solution.


______________________________________ % by Weight ______________________________________ Bentonite clay (Imvite FGB) 7.0 Sodium hypochlorite solution (10.6% 18.9 available chlorine) Distilled water 74.1 100.0 Adjusted with sodium hydroxide to pH 12.4 Theoretical available chlorine 2.00% Measured available Cl.sub.2 Initially 1.99% Cl.sub.2 availability after storage at ambient conditions for 2 wks. 1.96% for 5 wks. 1.92% for 8 wks. 1.89% ______________________________________

An unthickened aqueous sodium hypochlorite control with initial available Cl.sub.2 of 2.0% contained 1.95% available Cl.sub.2 after five weeks and 1.93% Cl.sub.2 after eight weeks at ambient conditions indicating that the addition of thickening agents according to the present invention did not affect the hypochlorite solution in any significant manner. Those skilled in the art know that a deterioration in the level of available chlorine readily occurs when certain conventional thickening materials are added to the hypochlorite solution. As the data herein indicate, our compositions remain stable without being affected by the addition of the thickeners to the aqueous hypochlorite.

Available chlorine was determined by the ASTM method D2022-64.

EXAMPLE II

A paste composition of good physical stability was obtained by mechanically mixing the following:


______________________________________ % by Weight ______________________________________ Attapulgite clay (Attagel 40) 15.1 Sodium hypochlorite solution 84.9 (12.3% available Cl.sub.2) 100.0 Adjustment with sodium hydroxide to pH 13.0 Available chlorine level: Theoretical: 10.50% Measured: Initially 10.47% After storage at ambient conditions for 1 week 9.54% 10 weeks 5.53% ______________________________________

An unthickened aqueous hypochlorite control with initial average Cl.sub.2 of 10.4%, dropped to 9.79% average Cl.sub.2 after one week and 6.99% average Cl.sub.2 after ten weeks at ambient conditions.

The above composition remained physically stable beyond ten weeks.

EXAMPLE III

A physically stable, thick, light colored, semi-translucent paste was obtained by blending a synthetic, micronsized, amorphous silica (Syloid 244) with sodium hypochlorite solution:


______________________________________ % by Weight ______________________________________ Syloid 244 11.10 Calcium hydroxide 0.20 Sodium hypochlorite solution (11.78%) 42.44 Distilled water 46.26 100.00 Adjustment with sodium hydroxide to pH 13.07 Available chlorine level: Theoretical: 5.0% Measured: Initially 4.89% After storage at ambient conditions 4.54% for three weeks


 
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Apple Roof Cleaning Tampa Florida

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813 655 8777

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Roof Cleaning Pro Greensboro NC (336)362 7659


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I USE ONE OF THESE THICKENERS

Tergitol NP-9 (Polyoxyethylene Nonylphenol)

http://www.chemistrystore.com/cart.cgi?group=49922&child=49929

Dawn or Ajax (regular)

Don't buy the anti-bacterial dish soap, it does not like bleach (it will cause a foamy mess/chemical reaction)

-- Edited by Mike Sullivan at 19:25, 2008-11-06

-- Edited by Mike Sullivan at 19:26, 2008-11-06

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Apple Roof Cleaning Tampa FL (813) 655-8777


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Mike Sullivan wrote:

I USE ONE OF THESE THICKENERS

Tergitol NP-9 (Polyoxyethylene Nonylphenol)

http://www.chemistrystore.com/cart.cgi?group=49922&child=49929

Dawn or Ajax (regular)

Don't buy the anti-bacterial dish soap, it does not like bleach (it will cause a foamy mess/chemical reaction)

-- Edited by Mike Sullivan at 19:25, 2008-11-06

-- Edited by Mike Sullivan at 19:26, 2008-11-06


The NP 9 surfactants I have used really thicken up the roof cleaning product.
But, the two roof cleaning chemicals fight each other.
So, when we do use the NP 9 surfactant in our roof cleaning product, we mix for THAT job, or a few more immediately folllowing.
We find if you "let it sit" in the tank, a noticable weakening is observed of the roof cleaning chemical.

 



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711 Westbrook

Brandon, FL 33511

813 655 8777

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Confident Roof Cleaning Houston TX


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Apple Roof Cleaning wrote:

Mike Sullivan wrote:

I USE ONE OF THESE THICKENERS

Tergitol NP-9 (Polyoxyethylene Nonylphenol)

http://www.chemistrystore.com/cart.cgi?group=49922&child=49929

Dawn or Ajax (regular)

Don't buy the anti-bacterial dish soap, it does not like bleach (it will cause a foamy mess/chemical reaction)

-- Edited by Mike Sullivan at 19:25, 2008-11-06

-- Edited by Mike Sullivan at 19:26, 2008-11-06


The NP 9 surfactants I have used really thicken up the roof cleaning product.
But, the two roof cleaning chemicals fight each other.
So, when we do use the NP 9 surfactant in our roof cleaning product, we mix for THAT job, or a few more immediately folllowing.
We find if you "let it sit" in the tank, a noticable weakening is observed of the roof cleaning chemical.



Thats an understatement. We have mixed the NP9 in the afternoon and used it. Then first thing in the morning, try to use it, and it is completely dead. It obliterates the SH. I used a whole bottle in a 100gl tank, and it didnt really thicken it much either.



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Apple Roof Cleaning Tampa FL (813) 655-8777


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Confident Roof Cleaning wrote:

 

Apple Roof Cleaning wrote:

Mike Sullivan wrote:

I USE ONE OF THESE THICKENERS

Tergitol NP-9 (Polyoxyethylene Nonylphenol)

http://www.chemistrystore.com/cart.cgi?group=49922&child=49929

Dawn or Ajax (regular)

Don't buy the anti-bacterial dish soap, it does not like bleach (it will cause a foamy mess/chemical reaction)

-- Edited by Mike Sullivan at 19:25, 2008-11-06

-- Edited by Mike Sullivan at 19:26, 2008-11-06


The NP 9 surfactants I have used really thicken up the roof cleaning product.
But, the two roof cleaning chemicals fight each other.
So, when we do use the NP 9 surfactant in our roof cleaning product, we mix for THAT job, or a few more immediately folllowing.
We find if you "let it sit" in the tank, a noticable weakening is observed of the roof cleaning chemical.



Thats an understatement. We have mixed the NP9 in the afternoon and used it. Then first thing in the morning, try to use it, and it is completely dead. It obliterates the SH. I used a whole bottle in a 100gl tank, and it didnt really thicken it much either.

 


We buy some kind of NP 9 Surfactant from Florida Chemical Supply in Tampa.
Here is what it does to the Mix.

 



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Apple Roof Cleaning Tampa Florida

711 Westbrook

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813 655 8777

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Roof Cleaning Corpus Christi TX


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I have some of the NP9 that I bought a while back.

How much would you add to the roof mix? 1 cup of NP9 per 5 gallons of mix or more or less?

Thanks.

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Chris Chappell
361-853-2513
Cleaning Shingle and Tile Roofs in Corpus Christi Texas
No Pressure Roof Cleaning in Corpus Christi Texas
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Apple Roof Cleaning Tampa FL (813) 655-8777


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Christopher wrote:

I have some of the NP9 that I bought a while back.

How much would you add to the roof mix? 1 cup of NP9 per 5 gallons of mix or more or less?

Thanks.


One Gallon to 300 gallons Roof Cleaning  mix, any more is HARD to rinse.
Pure Surfactant is a powerful additive, and a little goes a long way for roof cleaning.


 



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Apple Roof Cleaning Tampa Florida

711 Westbrook

Brandon, FL 33511

813 655 8777

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Here are more of our services

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Roof Cleaning Corpus Christi TX


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Thanks for the info Chris.

I will have to try that on my next roof cleaning I do.

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Chris Chappell
361-853-2513
Cleaning Shingle and Tile Roofs in Corpus Christi Texas
No Pressure Roof Cleaning in Corpus Christi Texas
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Iannacchione


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Can someone please let me know what size bottle of Ajax to use for a 100 gallon batch of cider sauce????

64oz?

Thank you all very much.
Brad

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Soapy Roof, LLC
New Kensington, PA 15068
Baltimore MD Roof Cleaning 410-482-4367


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Starting with 64oz will work, then add more if it isn't sticky enough. Remember the Dawn is a surfacant (sticky juice) the steeper the roof the more surfacant you want.

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Iannacchione


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Hey Bill,

thanks alot.  that makes perfect sense to me.  I appreciate your answer.

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Brad R. Iannacchione
Soapy Roof, LLC
New Kensington, PA 15068
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