Carbomer

Product Name: Carbomer
Application: Sanitizers
CAS No:
HS No:
FRP Refer:
Description: Carbomers function as thickening, dispersing, suspending and emulsifying agents in cosmetics and personal care products. They are widely used to provide emulsion stability.

AQUPEC HV-701EDR

INCI Name: Acrylates/C10-30 Alkylacrylate Crosspolymer

Introduction

AQUPEC HV-701EDR is the traditional Sumitomo Seika
product which has been specially designed to disperse
easily. Additionally, AQUPEC HV-701EDR is produced in
soft solvents (Class 2 of ICH guide, Benzene free).*
*ICH Guideline for Registration of Pharmaceuticals

Figure 1: Comparison between dispersion of HV-701EDR
and Carbomer

As Figure 1 shows, dispersion of HV-701EDR is
significantly much faster than that of carbomer. After 20 min
stirring, HV-701EDR is fully dispersed while dispersion of
carbomer needs some more time to be complete.

Chemical and physical characteristics:

* Not to be used as specification

Chemical Acrylates/C10-30 Alkylacrylate
Name Crosspolymer
CAS No. Confidential
Chemical
Structure
INCI name Acrylates/C10-30 Alkylacrylate

Crosspolymer
Appearance White Powder
Bulk density 0.18-0.22g/ml
pH(0.5 % aqueous)
a)		 Aprox 3
Solvent type Class 2 (Benzene free)

a) Before neutralization
Figure 2: Neutralization of AQUPEC HV-701EDR

AQUPEC HV-701EDR is Acrylates/C10-30 Alkylacrylate
Crosspolymer. AQUPEC HV-701EDR in water (before

DISCLAIMER

(1) This brochure (and the information contained herein) is provided solely for promotional and illustrative purposes only and is not nor
intended to constitute any promise, representation or any kind of warranty as to any product or any other matter. The information in this
brochure is subject to change without notice and is not intended to be relied upon.

(2) All representations and warranties relating to products are set out exhaustively in the relevant contract of sale or service, and nothing
in this brochure shall be construed as adding to or altering any term of such contract.

(3) Please refer all enquiries concerning any product or this brochure to SUMITOMO SEIKA CHEMICALS CO., LTD.

neutralization) is an acid (pH approx 3) cloudy dispersion (Figure 2). In this state, AQUPEC’s chains are tangled giving a low viscous medium. During neutralization, acid moities of AQUPEC are neutralized. The resulting acrylate groups repulse each other expanding AQUPEC’s chains (Figure 3). The result is a high viscous clear gel (Figure 2). On the other hand, as polymer chain contains some hydrophobic groups, good emulsion can be obtained. That fact makes the applicability of this polymer wider.

Figure 3: Mechanism of thickening of AQUPEC

Specifications

Table 1. Properties of AQUPEC HV-701EDR.

Item HV-701EDR
1wt% mucilagea) 30,000 – 45,000
(pH7.0-7.8, Spindle #6)
1 wt% mucilage
+ 1.0 wt% salt a)		 4,000 – 10,000
(pH7.0-7.8, Spindle #5)

a) Viscosity[mPas] (BH Type Viscometer, 20rpm).

Key benefits:

• Easy dispersion.
• Benzene free.
• High viscosity at low concentration (Figure 4).

Features.
Basic Polymer Properties in Water.

1) Effect of pH.

Excellent thickening effect is achieved in the range of pH 5 to 11 (Figure 5). Out of this range, a decrease in viscosity occurs due to high ionic strength.

2) Effect of electrolytes

General speaking, anionic thickeners (such as AQUPEC) behavior in solution is significantly affected by the ionic strength. When electrolytes (such as sodium chloride) are present thickening capacity of AQUPEC lowers. The result is a decrease in viscosity of the aqueous solution (Figure 6).

surfactant) may lead to the flocculation of AQUPEC.

Storage & Handling
AQUPEC HV-701EDR is very hygroscopic and swells quickly in the presence of water. Keep the container closed when not in use, and store in a dry and dark area.

Packing
15 kg box

Shelf life
Two years from the date of the initial analysis (except for “loss on drying”)

Recommendations for addition of HV-701EDR

  • Add AQUPEC HV-701EDR gradually to water or mixtures which contain more than 80% water (With stirring). A common stirring blade can be used, but a dispersion blade (Figure 7) is recommended.
  • Add AQUPEC HV-701EDR with stirring.
  • After AQUPEC HV-701EDR is dispersed uniformly, the addition of the proper neutralizer will give a gel. Other ingredients can be added as well to complete the formulation.
  • Before neutralization, the addition of some compounds which act as electrolytes (such as anionic surfactant) may lead to the flocculation of AQUPEC.

Suggested Applications.
AQUPEC HV-701EDR can be used for a wide range of

applications. For ex:

  • Moisturizing Cream
  • Shampoo

Viscosity Measurement Procedure

1. Using a graduated cylinder, measure 400 mL of distille water (previously maintained at 25oC), and pour into a clean dry 1000-mL beaker.
2. Set up a variable speed laboratory stirrer with a propeller blade and adjust the speed to 1000 ± 50 rpm.
3. Weigh AQUPEC (5 g for a 1 % solution).
4. Add slowly the polymer with stirring (approx 1000 rpm). When addition of polymer is finished, add 100 mL water in the beaker, and stir for 30 minutes.
5. Remove the propeller blade from beaker, and cover with watch glass or aluminum foil. Keep the solution in a water bath at 25 oC until foam breaks and there are not bubbles on the surface of the solution.
6. Place the “S” stirrer in the solution (Figure 8). Using a 10-mL graduated pipette quickly add the corresponding neutralizing agent.
7. Stir the gel formed at 220-250 rpm for one hour.
8. Check the pH of the gel with a pH meter. Values should be between 7.0-7.8. If solution is still acid, add some amount of NaOH solution 18 wt %. If it is too basic, discard it and prepare a new one.
9. For electrolyte resistance test: Add 5 g of NaCl (solution will be 1 wt % NaCl).
10. Check the temperature of the gel by placing a thermometer straight down into the center of the gel. Do not stir or incorporate any air into the gel, as it must be as free of air as possible. Leave in water bath until temperature becomes between 24.5 and 25.5oC.
11. Measure the viscosity of the gel with VISMETRON at 20 rpm using suitable spindle.

Formulations:

Moisturizing cream

Moisturizing Cream
PART A
Cetyl Alcohol 1.0 %
Caprylic/Capric Triglyceride 10.3 %
Isopropyl Myrystate 4.0 %
PART B
Water 74.3 %
Glycerin 5.0 %
AQUPEC HV-701EDR 0.2 %
Polysorbate 60 1.0 %
PART C
6% NaOH 2.2 %
PART D
Ethanol 6.0 %
100.0 %

Procedure

1. PART A: Mix PHASE A ingredients (bath at 75℃) .
2. PART B: In a separated beaker, mix Glycerin and Polysorbate 60 in water. Add AQUPEC HV-701EDR to that solution and disperse keeping temperature at 75℃.
3. Mix PART A and PART B (bath temperature = 75℃), with stirring.
4. Keep stirring while add the corresponding amount of 6% NaOH aqueous solution (PHASE C).
5. Cool mixture down (about 25℃).
6. When batch temperature becomes about 25℃, add PART D and stir.

Shampoo.

Shampoo
PART A
AQUPEC HV-701EDR 0.2 %
Water 16.0 %
PART B
Sodium Laureth Sulfate (3mon, 25%) 44.0 %
Potassium hydroxide (5%) 9.5 %
Water 9.5 %
PART C
Sodium Benzoate 0.3 %
Disodium EDTA 0.1 %
Water 6.0 %
PART D
Cocamidopropyl Betaine (30%) 21.3 %
PART E
Ceric Acid 0.4 %
100.0 %

Procedure

1. PHASE A: Disperse AQUPEC HV-701EDR in water. Warm it up to 60℃.
2. PHASE B: In a separated beaker, mix PHASE B ingredient.
3. Add PHASE B to PHASE A. Mix it 5 minutes keeping temperature at 60℃.
4. PHASE C: In a separated beaker, dissolve sodium benzoate and disodium EDTA in water.
5. Add PHASE C to the mixture, and mix it 5 minutes at 60℃.
6. Add PHASE E and mix it 5 minutes at 60℃.
7. After cooling down below 40℃, add PHASE E and stir.

Alcohol gel

Alcohol gel
AQUPEC HV-701EDR 0.5 %
Ethanol 70.0 %
PART B
Water 29.0 %
Diisopropanolamine 0.5 %
100.0 %

Procedure

1. Mix ethanol and water.
2. Disperse AQUPEC HV-701EDR, and stir it for about 5 hours.
3. Add diisopropylamine and stir.

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