Help: How do I make spray.starch with CO2

Formulating

Help: How do I make spray.starch with CO2

Posted by martinkul on May 6, 2014 at 6:18 pm

I want to make a 20kg Spray starch and hope to add CO2 inorder to achieve that aerosol kind of presure in my local spray can… plz wat ratios shud i use or is there an altetnative?

Ingredients:
corn starch
water
lavander oil
CO2
Methanol
guar gum

martinkul replied 10 years, 6 months ago 3 Members · 8 Replies
8 Replies

Bobzchemist

Member
May 7, 2014 at 9:11 am

I need more info. What kind of dispenser will you be packaging the starch into?
martinkul

Member
May 7, 2014 at 4:36 pm

Hi @Bobzchem

I want to put the starch in a plastic with a pump like SPRAY COVER/ spray gun. the ones used in glass cleaners…just the local home available plastics.

my intention is to see how i.make d starch in my kitchen with the CO2 added and then pure into the can and seal it.

so when i spray it wud come out as though it aerosol compressed..

please what do i do?
Bill_Toge

Member
May 7, 2014 at 6:42 pm

are you saying you want to use carbon dioxide as a propellant for an aerosol spray?
Bobzchemist

Member
May 7, 2014 at 6:45 pm

@martinkul,

You are running into a force/power containment problem. There’s no way to keep a CO2 charge in a regular sprayer - it just leaks out.

If you don’t want to just use the hand sprayer, you have three options:

1) use a pump-pressurized sprayer or mister:

http://www.amazon.com/418-1-Liter-One-Hand-Pressure-Sprayer/dp/B000BX4VXI

2) Use a compressed air-powered sprayer with a separate can:

http://www.homedepot.com/p/Preval-9-oz-Complete-Spray-Gun-267/202533738

3) use an electric sprayer

http://www.amazon.com/Wagner-0500007-Handheld-Airless-Multi-Sprayer/dp/B000VSFMX6/ref=sr_1_4?ie=UTF8&qid=1399502489&sr=8-4&keywords=electric+paint+sprayer
martinkul

Member
May 8, 2014 at 6:44 pm

@BILL_Toge
thats what I want to achieve.
using carbon my alternative to aerosoli compression.

please what would u advise?
martinkul

Member
May 8, 2014 at 6:46 pm

@Bobzchem.
Thanks A Bunch!

please what ratios of the chemicals would you.suggest i use?
for u just 20kg batch
Bobzchemist

Member
May 9, 2014 at 2:15 pm

@martinkul, any of the powered sprayers I mentioned should work with just about any spray starch formulation.

You can use this one and take out the propellant, for example:

http://www.google.com/patents/US4023978
martinkul

Member
May 10, 2014 at 5:58 pm

@Bobzchem

You are the best.

Thanks alot…

I learnt so much from the link you gave me and all your splendid advise.

Am working on the materials listed therein the site and I will surely post my result once am done.