ORGAL M 420
ORGAL M 420
www.atamankimya.com
ORGAL M 420 by ATAMAN Kimya
Synthetic Thickener
Polyacrylate Resin Emulsion
IINTRODUCTION
Orgal M 420 is an APEO free, acid containing crosslinked acrylic emulsion copolymer.
When the emulsion is diluted with water and neutralized with a base, each emulsion particle swells greatly.
The emulsion clarifies under these conditions and becomes highly viscous.
Once neutralized, solutions of Orgal M 420 cannot be reverted to emulsion form as a reduction in pH will precipitate the polymer.
Solutions of Orgal M 420 salts are more similar in properties to solutions of natural gums or higher viscosity grades of water soluble cellulose derivatives than the other grades of acrylic thickeners.
Solutions are prepared for use rapidly, since neutralization occurs almost instantaneously with a variety of standard bases.
Handling is greatly simplified compared to that necessary with powdered natural or synthetic gums.
It is possible in specific cases to incorporate Orgal M 420 into a latex emulsion or other suspension without preneutralization as first determined on a laboratory basis.
Solutions of Orgal M 420 effectively suspend pigments, abrasives and other fine particle solids.
Unlike conventional thickeners, salts of Orgal M 420 have no flocculating action; thickened lattices remain free of any creaming tendency and aqueous suspensions are free of sedimentation.
Orgal M 420 is acrylic thickener with pseudoplastic profile.
Orgal M 420 is suitable for coatings.
Orgal M 420 provides required rheology to products.
Technical sheet of Orgal M 420:
Orgal M 420 is a general purpose acrylic thickener with a pseudoplastic profile. Orgal M 420 is suitable for coatings.
Orgal M 420 type : Rheology modifiers / thickeners
Orgal M 420 is a general purpose, alkali swellable, hydrophobically modified anionic acrylic copolymer based thickener. Orgal M 420 can be formulated easily. It provides the required rheology to the products.
Orgal M 420 Rheology Modifiers / Viscosity Modifiers / Thickeners> Alkaline Swellable Acrylic Polymers (ASE / HASE)
Chemical composition: Acrylic copolymer
COMMERCIAL product condition
ORGAL M 420 is a polymer offers excellent interaction with various polyurethane rheology regulators.
Figure 2 shows the proportions of the polyurethane thickener used to equalize the final viscosity of the paint containing 30% PVC based on ORGAL M 420 and other acrylic polymers of styrene at 7000-8000 cps.
Here we see the good performance of ORGAL M 420 compared to other styrenic acrylic polymers and offering a cost advantage.
New generation ORGAL M 420 has excellent color intensity performance with different dye systems thanks to its innovative technology.
ORGAL M 420 the comparison of the intensity of colors with different colors appears visually.
Orgal M 420, polymer, used the paint gives a better intensity of color.
The abrasion resistance performance in paints made with ORGAL M 420 is much better than paints made with other styrene acrylic polymers.
According to the test carried out according to ISO 11998, the loss of micron on the surface of the paint determines the performance.
Orgal M 420 used in To paints.
Decreased micron loss at the surface indicates better performance.
Decorative construction paints have different binder technologies.
These differences are shaped by performance characteristics, local market needs and environmental / health issues.
The most styrenic acrylic binder polymers are the first choice in many markets due to their high pigment bond strength and high rub resistance due to their hydrophobic character.
Orgal M 420 produced with this technology usually contain ammonia and cause a strong odor in the product.
Organic Chemistry has developed ORGAL M 420, a new generation, ammonia-free and environmentally sensitive polymer, meeting customer requirements.
ORGAL M 420 is a 50% solids styrene acrylic polymer developed for interior and exterior paint applications.
In summary, the main features of the ORGAL M 420 are as follows.
-ORGAL M 420 is a styrene acrylic polymer without APEO and without ammonia.
-ORGAL M 420 offers excellent interaction with various PU rheology organizers,
-ORGAL M 420 gives perfect color intensity with different dye systems,
-ORGAL M 420 has excellent adhesion to pigments and excellent resistance to friction,
-ORGAL M 420 offers very good adhesion on mineral surfaces,
-ORGAL M 420 has excellent water resistance,
-ORGAL M 420 has a low viscosity which facilitates use in production facilities.
ORGAL M 420, which is the product of long term studies of innovation and the use of new technologies, is an excellent choice for high quality paints as ammonia free styrene acrylic polymer with reduced environmental effects.
Technical sheet
Orgal M 420 is a styrene acrylic copolymer emulsion without ammonia, APEO or formaldehyde.
Suitable for formulating moisture barrier coatings, roof coatings and cement based 2 component roof coating systems.
Exhibits very good adhesion, flexibility, durability, low glass transition temperature and water resistance.
Shows compatibility with cement mixtures. The shelf life of Orgal M 420 is 12 months.
Orgal M 420 forms a transparent, elastic and slightly tacky film when dried above 0 ° C.
Product type Acrylic and acrylic copolymers Styrene acrylic copolymers
Chemical composition Styrene acrylic copolymer
Liquid physical form.
ORGAL M 420 has been developed to be suitable for use in the following paint formulations.
-Interior and exterior matt and semi-gloss paints,
-Textured paints,
-Interior / exterior acrylic coatings,
-Varnishes / fillers,
-Putties.
Polymers or combinations of polymers are used for the production, namely vinyl acetate / vinyl versatate, vinyl acetate / acrylate, acrylate and styrene / acrylate.
Dispersions based on these bases can be used in the following applications: interior and exterior paints, glossy and semi-gloss paints, primers, decorative coatings, plasters, roof coatings, silicate paints, top coats for thermal insulation systems, low VOC paints, elastomeric wall paints .
Furthermore Orgal M 420 used on, paints, varnishes and stains for wood, sandable impregnants, insulating varnishes for wood and paints for metals.
TYPIICAL PROPERTIES
Appearance: Milky liquid
Solid Content % ± 0,5 :28
Viscosity as supplied : 10 cps
Solution Viscosity with
1% NH4+ salt : 3.000 cps
5% NH4+ salt : 25.000 cps
Specific Gravity, as supplied : 1,054 @ 25°C
pH (when packed): 2.0 – 4.0
APPLICATION PROPERTIES
The tendency of Orgal M 420 to foam when rapidly agitated may be controlled effectively with 0,1 % Nopco 1497V, based on Orgal M 420 as supplied.
Other defoaming agents may have advantages for some applications.
Orgal M 420 is a stable emulsion,resisting mechanical shear that can be encountered during bulk handling or in high speed mixing equipment.
Freezing or addition of soluble iron, copper or multivalent cations to the emulsion may cause precipitation of polymer solids.
If the emulsion is accidentally frozen and settling of the polymer is evident, the product is recoverable in form by diluting it with water and adding alkali to form the salt solution.
Neutralization of Emulsion:
The reaction of Orgal M 420 with a base analogous to a weak acid-base titration.
Orgal M 420 has a buffering effect, since pH changes only slightly until the polymer is fully neutralized at a pH of approximately 8.
The rate of reaction between Orgal M 420 and a base is rapid.
The time required for complete neutralization is essentially the same as that necessary to obtain a thorough mixture of the emulsion with the base solution.
In stoichiometric calculations, Orgal M 420 solids have effective equivalent weight of 218.
Table 1 has been provided for convenience in preparing solutions of the sodium, potassium and ammonium salts.
Table 1: Preparation of Typical Salts
ORGAL M 420(parts by weight)
WATER(parts by weight)
ALKALI SOLUTION (parts by weight)
Sodium Salt 10% NaOH
1% 3,3 95,0 1,7
5% 16,4 75,2 8,4
Potassium Salt 10% KOH
1% 3,1 94,7 2,2
5% 15,4 73,5 11,1
Ammonium Salt 28% NH4OH
1% 3,4 96,3 0,26
5% 16,8 81,9 1,3
The following simple precautions should be followed when Orgal M 420 solutions are prepared:
Adding a base to Orgal M 420 as supplied will cause an unworkable gel to form immediately.
5% total solids appears to be the maximum concentration for solutions which can be readily handled.
Heating Orgal M 420 solutions in the presence of excess base, pH 10 or higher, is undesirable since change in properties may occur.
When a base is mixed with diluted Orgal M 420, agitation should be adequate to disperse the material uniformly.
To decrease foam or occlusion of air, however, the rate and duration of agitation should be held to a minimum.
Any of the following commercially available bases may be used satisfactorily with Orgal M 420.
Inorganic Bases Organic Bases
Sodium hydroxide
Sodium carbonate
Ethanolamine
Potassium hydroxide
Dibasic sodium phosphate
Dicthanolamine
Ammonium hydroxide
Sodium phosphate
Morpholine
Sodium bicarbonate
Sodium perborate
Alkylamines
Sodium silicate
The slight effect of temperature upon viscosity and high viscosity of aqueous Orgal M 420 solutions are particularly noteworthy as the greater thickening efficiency of Orgal M 420 at low concentrations compared to the cellulosic thickeners.
Solutions of Orgal M 420 are compatible with soaps, synthetic detergents and dispersing agents.
The multivalent cations such as copper, aluminum or iron may cause turbidity in Orgal M 420 solutions.
At high concentrations, these cations will precipitate the polymer.
Film Properties:
Films of Orgal M 420 or its salts are clear and somewhat brittle.
Through hygroscopic, they are less water sensitive than films of most other acrylic thickening agents.
Films prepared from the ammonium salt are less sensitive to water than those cast from the sodium salt.
Soft, flexibile films can be prepared by adding glycerin or other glycols to solutions of Orgal M 420 salts, while reaction with the zinc-ammonia complex produces a water insoluble film on drying.
However, this zinc polyacrylate film can be redispersed in dilute caustic or ammonia solutions.
The high viscosity of Orgal M 420 solutions, even at low concentrations, suggests their use to suspend pigments and fillers in water-based paints, inks or other coatings and the abrasive particles in waxes or polishes.
Dispersions of high density pigments thickened to only 500 to 1.000 cps will show no tendency to separate even after several months of storage.
Orgal M 420 doesn’t flocculate pigment dispersions in marked contrast to some other thickeners.
Orgal M 420 is also useful for viscosity adjustment of emulsion and latex compounds of many types.
In situ thickening:
With the more stable lattices and emulsions, such as those commonly used for paint, paper and cloth coatings, Orgal M 420 may be incorporated without dilution or neutralization.
This procedure of in situ thickening has the desirable advantage of avoiding altogether the handling of dilute, viscous solutions.
It is desirable to disperse the Orgal M 420 emulsion quickly and uniformly to avoid any localized concentration of acid polymer.
With acid emulsions, base may then be added to obtain viscosity, while normally alkaline compounds should be modified with extra base before Orgal M 420 is added.
Final pH should be greater than 7,5.
Emulsions or latex compounds thickened by this procedure may show a minor viscosity increase for several hours after adding Orgal M 420.
PRODUCT HANDLIING – STORAGE – SHELFLIIFE
To ensure safe storage of this emulsion, containers should be well sealed to prevent the water evaporation and skin forming.
The emulsion must be stored between 5-25°C for a maximum of 12 months and freezing must be avoided.