[chemicalmatt]

Increases micelle formation.

[chemicalmatt]

Everything that @ketchito stated goes for me too. I’ll add one of the best ingredients to add to these systems - mentioned briefly - is a linear alkyl alcohol ethoxylate or PPG/PEG block copolymer. These are suds crushers that also act as enzyme stabilizers and mild detergents. Call it a “three-fer”

[chemicalmatt]

Add & mix glycerin stuff to the Sucragel XL at the very start before adding any oil.

[chemicalmatt]

I am not aware of where she learned of that deactivation property assigned to ethoxylates. Your empirical research clearly shows that it may have been misguided. Some ethoxylates (not all) have been known to deactivate parabens and some others, polysorbate 20 being notorious for that, but phenoxyethanol is entirely different chemistry. I say go with the flow.

[chemicalmatt]

You are definitely in need of a higher ratio of polysorbate 80:lipids. Try 5:1 and see how it turns out. Adding a food grade rheology stabilizer might help too. Carageenan gum comes to mind.

[chemicalmatt]

You will need to revamp that emulsifier blend and increase it. Glyceryl Stearate S.E. @ 4.0% | Polysorbate 80 at 1.5%. Sorbitan Stearate would work better, especially if you added a tad bit of stearic acid (1.0%) with a dram or so of triethanolamine (0.15%) to stabilize.

[chemicalmatt]

@Margaret PNC400 from 3V Sigma is identical to any pre-neutralized acrylic polymer (carbomers included) from any other source. As others have commented, inclusion of electrolytes, especially divalent ones, will crash virtually all of these. The formulations from P&G and Lubrizol likely do not have the usual dentrifices such as dicalcium phosphate, sodium bicarbonate, etc.; they may include silicas and silicates though. This is not a function of pH but crosslinking chemistry.

[chemicalmatt]

@Nikifarokhi I’ll answer best I can:

1. Negative, these are not eutectic, different chemistry and not water soluble

2, Acceptable concentrations: less than 1.0% menthol, less than 0.50% camphor. You’ll know if too much when you take a hot shower - both will sting the eyes when vaporized

3. Sure you can use MIT, especially in a rinse-off.

4 You may use NaOH solution, AMP or tromethamine to neutralize. If you use Synthalen W600 (acrylates Copolymer) from 3V Sigma USA, no need to back-acid titrate, just move on.

[chemicalmatt]

@nathanhamood The classic method of spray anticoagulant is to add a small amount of alkanolamide (lauramide MEA, cocamide DEA, cocoamide MIPA) to the formula; < 0.50%. This also functions as a resin plasticizer.

[chemicalmatt]

@Margaret The answer is yes, these tertiary amines all have an amino odor. Being cationic does not create sticky sensorial as a rule, but being a surfactant usually does.

[chemicalmatt]

@HenryLee With all those anionic acrylic polymers used there I do not foresee this ever being anything but an o/w emulsion. This is basically a Pickering emulsion. Test your pH directly and get on with your day.

[chemicalmatt]

@natiyo123 This is synonymous to canola oil. Use the comedomedic rating for that oil. You can use all you want.

[chemicalmatt]

Check out McKernan [www.mckernan.com] and use a PET cylinder or Boston round for the primary bottle, for a closure use a PP with SS ball/HDPE stem Euromist sprayer would be my recommendation, bottle and closure 20/410 or 20/415 neck finish if 2.0 fl.oz. (60ml) is your jam. Euromists have very small orifice size - why they mist so darn well, right? As for clogging, just add a little alkanolamide to the formula and keep suspended solids out.

• This reply was modified 1 week, 1 day ago by  chemicalmatt.

[chemicalmatt]

Use the Caframo mixer. No contest.

[chemicalmatt]

@Margaret the answer: a LOT of xylitol. That is the only sweetener listed so I’ll wager >10 % else this might make you puke with all that soap and carbonate. Also, this IS a solid state formula (powder).

[chemicalmatt]

Rapidgel EZ1 (3V Sigma USA) is a liquid that will thicken water-based formulations without any further neutralization needed. Drop in, mix 15 minutes, move on.

[chemicalmatt]

Thanks, Mike. Patchouli was the scent of choice for hippie chicks when I was a young man. Always reminds me of 1970’s love affairs.

[chemicalmatt]

When I used to manufacture alkaline relaxers (pH 13) I’d always inform my fragrance supplier of the application. Likewise, even more importantly, whenever the product was going to be a hot fill where bulk batch is held for 10 hours at 65C. They know the content of the fragrance and can inform & guide you. If that is not an option, just treat two swatches with the acid relaxer (carboxylol cysteine?), keep one out at RT as a control, subject the test swatch to the heating conditions, then comparison smell with a younger nose. Repeat two more times and get the 411.

[chemicalmatt]

I’ll take a stab here. Not knowing the grade of kaolin, but seeing you have not included a water-soluble alkali to saponify at least some of that stearic acid, then free calcium, magnesium, or aluminum ions from the kaolin are forming an oil soap with the stearic acid. That would present itself as a “swelling” or souffle’ texture on cooling to RT. Only mystery is this usually takes many days to appear, not immediately, so might be another effect.

[chemicalmatt]

Negative, not at that level since your combustibility is below the threshold limit. You will not be able to sell that in California, however, due to CARB limits.

[chemicalmatt]

@Abdullah The researchers chose a 1:5 mole ratio perhaps arbitrarily. Regardless: thank you so much for sharing this article. It explains a lot about LLC formation with fatty alcohols. Many thanks to you my friend.

[chemicalmatt]

Caframo mixers are the best! They are sold through VWR and other distributors. They can speed as high as 3000 rpm, so get a Cowles type (saw tooth) blade along with your standard blade and you will essentially have a homogenizer too as long as your project volume is smaller than 2000ml.

• This reply was modified 3 weeks, 6 days ago by  chemicalmatt.

[chemicalmatt]

Since @ketchito capably answered #2, I’ll go to #1: use Na2 EDTA, its sequestering activity is not compromised by cationics; and #3: to thicken just add cetyl alcohol or stearyl or both. Fatty alcohols highly associate with Polyquaternium-37, boosting viscosity.

[chemicalmatt]

The resource I and many others recommend in the USA is McKernan [www.mckernan.com]

mckernan.com

McKernan Packaging

McKernan Packaging offers wholesale bottles, surplus bottles and wholesale jars to customers worldwide. Offering continuous stock bottles, jars and packaging such as sprayers, pumps and closures at discount wholesale prices in bulk.

[chemicalmatt]

I surmise you have not actually compounded this in your laboratory yet? Whatever, see if you can get hold of Polyglcyeryl-4 Caprate or Polyglcyeryl-4 Stearate. Use either at >1.0% with that GSC too. Also I might add triethyl citrate (5.0%? yikes!) and zinc ricinoleate are doing 99% of the deodorizing there so DEL that “decalact deo” stuff, save some coin. And yes, you may SUB in euxyl9010. If you do so you won’t need all that citric acid/sodium citrate either - but then you will need to add TGDA since buffered citric acid was doing double-duty as the chelant there.