Basic characteristics and application

Nonylphenol polyoxyethylene (4) ether ammonium sulfate (HT CO-458) is an anionic-non-ion surfactant, its molecular formula C23H43NO8S, molecular weight of 493.66. It is rich in foam, high activity of good detergency and its mild Can be widely used in civilian products, industrial areas.But the composition contains phenols, cosmetics, food lotion, automotive glass cleaning agents, pesticides and other aspects are not recommended in the textile processing, it has Alkali, bleach, desizing, dyeing low dosage and modification; and in emulsion polymerization, can be used as Emulsifier and stabilizer for vinyl acetate, acrylic, vinyl chloride, styrene, styrene and styrene and System. The product can also be used in the tannery industry. HT CO-458 has the following advantages when mild emulsion polymerization

◆ can be used alone: ​​HT CO-458 in addition to containing sparse-based nonylphenol, but also contains two

A hydrophilic-based group: a non-ion group consisting of an ethylene oxide chain [polyoxyethylene: - (CH2CH2O) 4; and an anionic group consisting of sulfate; Features HT CO-458 is actually an anionic-non-ion type Emulsifier, which can be used alone in emulsion polymerization, and because of its small CMC value, the use of less, the latex has the characteristics of small particle size, thus So that the emulsion film is transparent, the brightness of the film close to the oil-based resin

◆ emulsion stability: hydrophilic group of ethylene oxide chain [polyoxyethylene: - (CH2CH2O) 4] is located in the middle of the molecule, so that the end of the sulfuric acid group charge distribution is broader, not only makes the anion Emulsifier emulsifying ability Of the performance of this feature is very full, can be used to prepare small particles of latex widely used

And the ions far away from the latex particles with mutually exclusive ion charge, latex is not easy to agglomerate. Moreover, the structure of ethylene oxide in the water can be irregular bending stretch, water-soluble polymer particles around the So that the mechanical stability and thermal stability of the latex are increased.

◆ latex good quality: synthetic emulsion after film, its adhesion, water-based, yellowing resistance, scrub resistance and other properties, with the system selected Emulsifier varieties have a great relationship because of small performance Molecule Emulsifier can be migrated from the adhesive layer and enriched on the surface of the adhesive layer, resulting in the above defects. HT CO-458 is a high efficient Emulsifier, it is less in the system, say it is ammonium salts Emulsifier, This migration and enrichment capacity is much lower than sodium salt

HT CO-458 Molecular Structure Diagram

Part of the physical and chemical properties

Appearance (25 ℃) light yellow transparent liquid

Smell of ethanol

Active content (wt%) 58-59

Solid content (wt%) 62-66

Water content (wt%) 20-25

Ethanol content (wt%) 12-16

PH (1% aqueous solution) 6.5-7.5

Specific gravity (25 ° C, g / cm 3) 1.065

Viscosity (25 ℃, CPS) ~ 100

Freezing point (℃) <0

Flash point (closed cup, ℃) 30

Critical micelle concentration (CMC) (wt%) 0.020-0.050

* The above indicators are the company's internal control indicators, not the product sales of the indicators

Solubility

Insoluble in nonpolar solvents

Soluble in polar solvents

Completely dissolved in water

Foaming

Improved ROSS-MILES foam test (GB / T7462-94)

HT CO-458 Foam height ml (0.5%, 25)

At the beginning: 295

After 15 minutes: 250

Surface tension test

The surface tension of the product was measured at a temperature of 25 ° C in the following aqueous solution, and the results were as follows:

Concentration (25 ° C,%) 0 0.005 0.01 0.02 0.03 0.04 0.05 0.1 0.5 1.0

(Dynes / cm) 72.0 60.0 52.5 46.0 43.0 42.0 41.0 41.5 45.0 45.0

Wettability (Draves Experiment)

At room temperature (25 ° C), Draves sinks for seconds

%, The concentration of 1.0 0.5 0.1

Time, seconds 4.8 8.6 12.9

Application of the product in pure propylene pressure sensitive adhesive emulsion (for reference only)

(A) ratio

name	Reactor	Titration tank (pre-emulsification)	Dropping initiator
Deionized water Butyl acrylate acrylic acid Hydroxyethyl acrylate HT CO-458 Emulsifier Tert-dodecyl mercaptan Ammonium bicarbonate / water Ammonium persulfate Ammonium persulfate / water (priming)	191 - - - - -0.713 / 3.1 - 1.752 / 7.8	178 533.4 5.6 11.2 4.0 0. 07 1. - - -	2.8 - - - - - - 0.806 -

(B) the process

Add 0.713KG of ammonium bicarbonate in 3.1KG of water; take 4.65KG of ammonia dissolved in 4.65KG of water; take 1.752KG ammonium persulfate dissolved in 7.8KG water as the initial initiator, take 0.806KG ammonium persulfate dissolved 2.8KG water as a drop initiator; take 0.775KG tert-butyl hydroperoxide, 0.2KG Emulsifier HT CO-458 dissolved in 6.2KG water; depending on the process, take 0.775KG carved white powder dissolved in 7.8KG water (now with now Use). Defoamer 0.9KG plus 5.1KG water; surfactant HT OT-70 about 1.24KG add water 12.4KG; above with a good material to be used.

2) Take 178KG deionized water into the pre-emulsification kettle, add 4KG Emulsifier HT CO-458, stir 15 minutes later, followed by adding acrylic acid, hydroxyethyl acrylate, butyl acrylate, tert-dodecyl mercaptan, stirring for 20 minutes It is worth noting that in the following drops of the process, if see stratification, it takes a while to stir for a while.

3) Add 191KG deionized water to the reaction kettle and stir rapidly to about 60 ° C. Add a good aqueous solution of ammonium bicarbonate. When heating to 80 ° C, add 15.5KG of pre-emulsion to the autoclave. When the temperature is raised to 81 ° C, the stirring speed is adjusted to a speed of about 38 to 40 revolutions per minute, and the initial initiator solution is rapidly added.

4) When the temperature drops to near 84 ° C, adjust the stirring speed of 32 to 34 rpm and start dropping the initiator, about 1 to 2 minutes after the drop of pre-emulsion; in the subsequent operation, keep the temperature of 83 ~ 84 ° C and the whole pre-emulsion was added dropwise for 3.4 hours and the initiator was 3.6 hours.The pre-emulsion was added dropwise and washed with 15.4 Kg of water and added dropwise to the autoclave.

5) dropping the initiator and pre-emulsion, the temperature rose to 87 ℃, and heat for 1 hour; cooling to 70 ~ 72 ℃ with a good amount of dilute ammonia 3KG, and stirring for 10 minutes; then 15 minutes by adding tert-butyl Hydrogen peroxide solution, after 5 minutes, in 15 minutes by adding carved white powder solution; cooled to 50 ℃ plus the above half of the surfactant HT CO-458 aqueous solution.

6) before the discharge, followed by slowly dropping diluted ammonia 6.3KG, Defoamer aqueous solution 5.4KG, the remaining surfactant HT OT-70 solution.

(C) the test results

Solid content (%): 55.4

Viscosity (CPS): 120

PH: 8.5

Initial tack: <3cm (18 # steel ball)

Sticky:> 32 hours

180 ゜ peel force: 7.3N

Coating test results: film transparent, no particles, no bubbles, no fish eyes.

Biodegradation and environmental protection

HT CO-458 is not classified as environmentally hazardous by the State. This product may be partially biodegradable, but

Slow and deep degradation can be hazardous to the environment.

Health and safety

Before using this product, please carefully read the material safety data (MSDS) of our HT CO-458 product.

HT CO-458 does not have a significant hazard to health in routine industrial operations, but inhaled products

Ethanol steam can cause central nervous system discomfort. Skin directly in contact with the liquid, will cause moderate irritation, including pain. Eye contact with the product, can cause serious irritation, such as outside eyelid burning sensation.

Storage and operation

Please keep the HT CO-458 in a cool, ventilated place, away from heat and fire. When not in use, please keep the container in order to avoid gel. If gel occurs due to water or ethanol loss, add proper amount of ethanol, Barrel until the gel disappears, and the quality of the product does not change due to solidification.

Calcium plastic materials, enamel, stainless steel and other materials produced by the container, are suitable for HT CO-458 storage and processing. At room temperature, the product can save at least one year.

Important statement

The contents of this document are based on the company's research and are honest and reliable. The customer has the responsibility to verify and determine this

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.

Unauthorized, the information in this article shall not be used as any patented invention.