AMMONIUM POLYACRYLATE
AMMONIUM POLYACRYLATE
CAS Number: 9003-03-6
Boiling Point: 141°C
Molecular Formula: C3H4O2+NH4
EC/List Numbers: 618-348-2
Systematic Name: 2-Propenoic acid
Ammonium Polyacrylate is a polymer anionic dispersant intended for paint products.
Ammonium Polyacrylate is supplied in the form of 40% aqueous solution of ammonium salt of polyacrylic acid.
Ammonium Polyacrylate is a clear or lightly murky yellow liquid.
Ammonium Polyacrylate has very good dispersing properties, especially in case of titanium white and mineral fillers.
Ammonium Polyacrylate is compatible with widely used acrylic dispersions, styrene and acrylic dispersions, as well as with homo- & copolymers of vinyl acetate.
Ammonium Polyacrylate is also highly compatible with the most popular rheology modifiers.
Ammonium Polyacrylate is better in improving water resistance of paint coats than sodium salt of polyacrylic acid.
The application of Ammonium Polyacrylate significantly decreases the viscosity of aqueous suspensions of titanium white and mineral fillers.
Therefore, the product allows large amounts of pigment and/or fillers to be efficiently introduced into the water system.
Even low concentrations of EXOdis PC40A provide paint products with very good stability.
Ammonium Polyacrylate has a positive impact on the compatibility of pigments in colour products.
Ammonium Polyacrylate is also used as a basic dispersing agent in waterborne decorative paints.
Thanks to Ammonium Polyacrylates low content volatile organic compounds (“VOCs”), the product may be used to create paint formulations in compliance with Directive 2004/42/EC.
The recommended level of use in waterborne paints is 0.1 – 0.6% (w/w).
Appearance: Colourless to pale yellow, clear liquid free from impurities
Density: 1.063g/cm3
Solids Content: 38.5%
pH: 6.5
Total Active Solids: 40%
Brookfield Viscosity: 80 – 300 cps
Percent Ash (typical):0.01%
Density at 25°C:1.25 Mg/m3
Weight Per Gallon:9.8 lb.
pH at 25°C:7.0 to 8.0
Viscosity at 25°C:50 kPa·s (50 cps)
Solubility:Very soluble in water systems.
Stability:Stable in the presence of acids andalkalies over a wide pH range.
Storage:Product should be stored above 10°C(50°F).
Advantages of Ammonium polyacrylate:
-Very good dispersing properties, especially in case of titanium white and mineral fillers,
-Basic dispersant for waterborne paints,
-Recommended for paints with low VOC,
-Compatible with widely used acrylic dispersions, styrene and acrylic dispersions, as well as with Homo- & copolymers of vinyl acetate,
-Compatible with rheology modifiers,
-Efficient even at low concentrations,
-Non-classified according to CLP,
-Positive impact on compatibility with pigments,
-Positive impact on water resistance of the coating.
Applications of Ammonium Polyacrylate:
-Decorative paints for interior and exterior,
-Titanium white concentrates,
-Plasterwork
Alternative names of Ammonium Polyacrylate:
Water solution of polyacrylic acid ammonium salt, Ammonium polyacrylate, anionic dispersant for dyes, 2-propenoic acid ammonium salt, homopolymer, polyacrylic acid ammonium salt.
Ammonium Polyacrylate is an Ammonium salt of polyacrylic acid Ammonium Polyacrylate uses and applications include:
-Pigment dispersant for paintscoatings, ceramics, paper
-Thickener and stabilizer for synthetic latexes
-Stabilizer for emulsion polymerization
-Wetting agent for cementpigment manufacturing
-Viscous stabilizer
-In coatings adhesives
-Dipped, cast, and molded goods
-Cements for rug backing
-Spraying, spreading, brushing, and extruding compds.
-Surfactant in cosmetics
Polyacrylates are prepared in aqueous solution under specially controlled reactıon conditions to produce efficient flocculants.
Ammonıum acrylate to polymerized at a monomer concentration within the range from about 10 weight percent of the polymerization system up to the monomer saturation level, in the presence of at least 0.1 weight percent of ammonium hydroxide.
The upper limit on the amount of hydroxide employed will range downwardly from about 15 weight percent to approxımately 5 weıght percent for monomer concentrations from 10 to 40 weight percent respectıvely.
Further improvement ın polymer propertıes is achıeved by the incorporation of at least about 1 weight percent, based on the weight of polymerızatıon system, of an alkali metal salt.
One of the potential factors that may limit the ruminant animal’s ability to digest fiber is the reduced retention and subsequent passage of cellulolytic microorganisms from the rumen.
Bacterial passage may be decreased by an inert support.
Ammonium polyacrylate is a hygroscopic organic polymer that is non-toxic to animals and environmentally degradable.
A digestibility trial was conducted with six Holstein steers cannulated at ruminal, duodenal and ileal sites to determine if an ammonium polyacrylate gel (GEL: 20 g ammonium polyacrylate hydrated in 2 l tap water containing 20 g glucose animal-1 day-1) would increase total tract nutrient digestion.
Intake and digestion of organic matter were not affected (p > 0.10) by GEL but NDF digestibility was decreased (p < 0.06) when GEL was consumed.
Although GEL appeared to be present in the rumen samples, higher concentrations may be needed to elicit a detectable in vivo response.
Ammonium Polyacrylate undergoes the typical reactions of a carboxylic acid. When reacted with an alcohol, it forms the corresponding ester.
The esters and salts of acrylic acid are collectively known as acrylates (or propenoates). The most common alkyl esters of acrylic acid are methyl, butyl, ethyl, and 2-ethylhexyl acrylate.
Ammonium Polyacrylate and its esters readily combine with themselves (to form polyacrylic acid) or other monomers (e.g. acrylamides, acrylonitrile, vinyl compounds, styrene, and butadiene) by reacting at their double bond, forming homopolymers or copolymers, which are used in the manufacture of various plastics, coatings, adhesives, elastomers, as well as floor polishes and paints.
Ammonium Polyacrylate is used in many industries like the diaper industry, the water treatment industry or the textiles industry.
On a worldwide scale the consumption rate of acrylic acid is projected to reach more than an estimated 8,000 kilotons, by 2020.
This increase is expected to occur as a result of using Ammonium Polyacrylate in new applications, including personal care products, detergents and products that are used for adult incontinence.
Ammonium Polyacrylate is an organic compound with the formula CH2=CHCOOH.
Ammonium Polyacrylate is the simplest unsaturated carboxylic acid, consisting of a vinyl group connected directly to a carboxylic acid terminus.
Ammonium Polyacrylate has a characteristic acrid or tart smell.
Ammonium Polyacrylate is miscible with water, alcohols, ethers, and chloroform. More than a million tons are produced annually.
Synonyms:
Poly(Acrylate Ammonium)
Poly(Acrylic Acid)
Ammonium Salt
Poly(Ammonium Acrylate)
Acrylic Acid
Ammonium Salt Polymer
Ammonium Polyacrylate
2-Propenoic Acid
Homopolymer
Ammonium Salt