Features and uses
2-acrylamido-2-methylpropane sulfonic acid sodium salt is an acylamino chain sulfonates whose molecular formula is C7H12NNaO4S and has a molecular weight of 229.23. The acrylamide groups in HT A-2405 accelerate the polymerization reaction; The methyl group and sodium methanesulfonate are bound to the amino group to prevent its hydrolysis and thermal degradation. The sulfonation group allows the monomer to exhibit a higher affinity for both water-based and Ionomer, the gel, particle size, surface charge density, latex stability, etc., produced by the preparation of the emulsion of HT A-2405 have been studied in detail. Since the polymer has the characteristics of polymer electrolyte, The use of HT A-2405, not only can replace the carboxylic acid monomer (such as acrylic acid), but also reduce the amount of other surfactants used, making pure C, vinegar The mechanical stability of the emulsion-resistant and styrene-based emulsions has been significantly improved, with good resistance to hydrolysis and thermal stability; products made from these emulsions have a smooth and flexible, comfortable touch It showed significant improvement in scrub resistance of coatings made. Therefore, HT A-2405 is a highly reactive, high affinity Water-based functional polymerizable monomer, but also a polymerizable Surfactant.
HT A-2405 is widely used in industrial, cosmetic, polymer synthesis and other industries such as water treatment, mining, flocculants, oilfield chemicals, daily necessities, medical supplies, cosmetics, detergents and detergents, Paper Coatings, Polymeric Emulsions, Coatings and Adhesives, Paints, Leather Tanning and Dyeing Polymers, Nonwoven Adhesives, Water Absorbents, Thickener, Leakproof and Sealants, etc. Especially for water treatment applications It can also be used as a third monomer for synthetic fibers.
O H CH3
‖ | |
CH2 = CH-C -N-C-CH2-SO3Na
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CH3
HT A-2405 structure diagram
Part of the physical and chemical properties
Pale yellow transparent liquid color (APHA) up to 150
Active content (%) 47-50
Solid content (%) 50-53
Solvent content (%) 47-50
Acrylic content (%) is less than 0.1
The acrylamide content (%) is less than 0.1
Flash point closed, ℃> 100 ℃
Refractive index (n20, D) 1.419-1.424
Freezing point - 28 ℃
Specific gravity (g / cm3) 1.20-1.23
Viscosity (20 ° C, mpa.s) is less than 30
Polymerization inhibitor (MEMQ, ppm) 65-90
Solubility
In a polar, non-polar solvent can be dissolved
Completely dissolved in water
Foam test (GB / T7462-94) HT A-2405 Foam height ml (0.5%, 25 ℃)
At the beginning: 5 10 15
Foam height 1 0.5 0
Typical composition using HT A-2405 to synthesize the emulsion, not only can reduce the amount of other Emulsifier, but also can make the system does not contain carboxyl monomer, in order to avoid viscosity changes, copper erosion phenomenon, other quality of the emulsion also improved.
Table 1: pure C, vinegar C, styrene-acrylic ratio:
Ingredients Pure acrylic emulsion Styrene - acrylic emulsion Vinyl Acetate Emulsion butyl acrylate 24.9 23.4 9.46
Methyl methacrylate 30.3 Styrene: 25.9 Vinyl acetate: 37.8
HT A-2405 0.6 0.5 0.5
HT A-102 0.04 0.035 HT A-103: 0.9
Baking soda 0.11 0.10 0.14
Sodium persulfate 0.33 0.33 Potassium persulfate: 0.21
Tert-butyl hydroperoxide 0 0 0.02
Carved white powder 0 0 0.02
Water 43.72 49.765 50.95
Total 100 100 100
Table 2: Performance test:
Performance Pure acrylic emulsion styrene-acrylic emulsion Vinyl Acetate emulsion Solid content (%) 50.2 50.5 48.5
Calcium salt stability greater than 40 greater than 30 greater than 20
Particle size (nm) 210 250 110
Gel (ppm) 200 120 ----
Film forming temperature ℃ 18 21 10
Freeze - thaw stability
Mechanical stability (min) 3.5 8.5 12
Biodegradation and environmental protection
HT A-2405 is not listed by the State as a hazardous substance. This product is completely biodegradable.
Health and Safety Before using, please read the company's Material Safety Data (MSDS) for this product carefully.
HT A-2405 does not pose a danger to the human body under normal industrial conditions, but should avoid long-term, high-dose exposure, or it may be cancerous or cancerous ).
Acute oral (mouse) LD50 values ??greater than 5g / kg. Based on current data, this substance is only a low toxicity category, but this does not indicate that the company's commitment to HT A-2405 can be used for the production of human implant products, The use of untreated HT A-2405 in the product The user should review the application of the product in the context of human health and environmental protection.
Storage and operation
Store the HT A-2405 in a dark, ventilated place, store at or below 26 ° C, and close the container when not in use. Wear protective equipment (such as glasses, gloves, etc.) during operation.
Calcium, plastic materials, enamel, stainless steel and other materials produced by the container, are suitable for HT A-2405 storage and processing. Avoid contact with strong acid and alkali, oxidants, catalysts, etc. polymerization inhibitor and high purity oxygen has a very good polymerization effect, normal In case, the product is kept for at least one year.
IMPORTANT NOTICE The contents of this document are based on the Company's research and are reliable and reliable, and it is the responsibility of the customer to verify and determine whether the product and the information are suitable for their own use. The manufacturer and the seller are not responsible or liable for the information in this document The
Unauthorized, the information in this article shall not be used as any patented invention.