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Antistat For Household Products

Designed to enhance the performance of multisurface cleaners, CRODASTAT 300 effectively prevents static build up on many types of surfaces including, polyacrylic, polycarbonate  and glass.  Enhanced  static  control  is  achieved  with  CRODASTAT 300 without causing streaking or other hindrances to cleaning performance.  This proprietary cationic antistat is chloride free so corrosion issues are not expected.
 

BENEFITS  

•  Excellent antistatic performance on plastic and glass surfaces
•  Streak-free cleaning performance
•  Effective at low use levels
•  Compatible in aqueous and solvent based systems

RECOMMENDED APPLICATIONS  

•  Multisurface cleaners
•  Cleaners used around electronic equipment
•  Automotive interior cleaners
•  Glass cleaners Antistat sprays

PERFORMANCE

Static charge can be generated by frictional contact between two surfaces.  Antistats function by increasing surface conductivity which promotes the dissipation of the static charge.
The effectiveness of antistats can be quantified by applying a cleaning composition containing suitable additives to a substrate and measuring the ability of the treated substrate to dissipate an applied charge.  The ability to dissipate a static charge can be quantified by measuring the time required for the applied charge drop to 1/e.
Results from evaluations such as these demonstrate that high levels of antistatic performance can be achieved by incorporating CRODASTAT 300 into a variety of multisurface cleaner preparations.  The durability of performance is particularly relevant for formulations claiming efficacy over long periods.  As the data that follows demonstrates, CRODASTAT 300 performs exceptionally well at dissipating static charges and in providing this performance over extended periods.  

Test Procedure

CRODASTAT 300 is ideal for inclusion in water based multisurface/glass cleaner preparations such as test formulations WC10 and WC11 which contain 0.6% and 0.3% CRODASTAT 300 respectively.

Test Formulation WC10
 

		% by wt
Dowanol PnB (Propylene glycol n-butyl ether)	Dow Chemicals	5.0
Isopropyl alcohol		5.0
CRODASTAT 300	Croda	0.6
Deionized water		89.4

Test Formulation WC11
 

		% by wt
Dowanol PnB (Propylene glycol n-butyl ether)	Dow Chemicals	5.0
Isopropyl alcohol		5.0
CRODASTAT 300	Croda	0.3
Deionized water		89.7

The antistatic performance of these formulations were evaluated on glass, polycarbonate and polyacrylic test tiles over seven or nine-day periods.  The evaluations were carried out by applying a charge to the test substrate and determining the time for the surface voltage to decay to l/e.  A controlled humidity environment (40% RH at 25°C) was maintained throughout the test period.  Included in the evaluations were a Control (i.e. a test formulation without CRODASTAT 300) and a Blank (untreated test tile).

Antistatic Performance on Glass

With reference to figure 1 it can be seen that even after seven days, an exceptional level of antistatic performance on glass was obtained with formulation WC10 (0.6% CRODASTAT 300).  An excellent level of antistatic performance was achieved by formulation WC11 (0.3% CRODASTAT 300) as well.

Figure 1: Charge decay rates on glass  

Antistatic Performance on Polycarbonate

On application to a polycarbonate test tile (reference figure 2) excellent antistatic performance was achieved by WC10 (0.6% CRODASTAT 300) even after 9 days.   Very good level of antistatic performance was obtained by formulation WC11 (0.3% CRODASTAT 300) as well.

Figure 2 Charge decay rates on polycarbonate   

Antistatic Performance on Polyacrylic

On application to a polyacrylic test tile (reference figure 3) a high level of antistatic performance was achieved by WC10 (0.6% CRODASTAT 300) over a 7 day period.

Figure 3 Charge decay rates on polyacrylic 

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