Quick Search
TYLOSE H 20 P2 acts as a thickening and stabilizing agent.
TYLOSE H 20 P2 is a nonionic cellulose ether with delayed solubility to ensure a lump free solution in aqueous systems.
TYLOSE H 20 P2 exhibits high compatibility with other raw materials such as surfactant.
CAS: 9004-62-0
MF: C29H52O21
MW: 0
EINECS: 618-387-5
Synonyms
2-hydroxyethylcelluloseether;ah15;aw15(polysaccharide);aw15[polysaccharide];bl15;cellosize;The blood coHydroxyethyl cellulose etherngeals the appearance board;5-[6-[[3,4-dihydroxy-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxymethyl]-3,4-dihydroxy-5-[4-hydroxy-3-(2-hydroxyethoxy)-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxyoxan-2-yl]oxy-6-(hydroxymethyl)-2-methyloxane-3,4-diol
TYLOSE H 20 P2 is used in hair colorants, body lotion, liquid foundation and sun care products.
TYLOSE H 20 P2 is a commonly used cellulose ethers organic water-based ink thickening agent, belongs to a water-soluble non-ionic compound, with good water thickening ability, degraded by oxygen, acid and enzyme, under alkaline conditions can be crosslinked by Cu2+.
Has thermal stability, when heated, does not appear gelation, does not occur precipitation under acidic conditions, the film-forming property is good, the aqueous solution can be made of a transparent film, can be derived from the reaction of alkali cellulose with ethylene oxide, having properties such as thickening, emulsifying, adhesive, suspension, film-forming, maintaining moisture and protectiving colloid.
The role of thickener in the aqueous ink is thickened.
The viscosity of the ink added a thickening agent increases, can improve the physical and chemical stability of the ink; due to the increased viscosity, rheology of the ink can be controlled at the time of printing; the pigment and filler in ink is not easy to precipitate, increasing the storage stability of the water-based ink.
Thickening agent is a cellulose-based material and (or) polyvinyl alcohol substances. Cellulose substances may be methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose, Hydroxyethyl cellulose and hydroxypropylmethyl cellulose; polyvinyl alcohol material may be an or several species of polyethylene 400, 600, 800, 1000, 1600, 2000, 4000, 6000.
Hetastarch, another nonproteinaceous colloid, is a complex mixture of ethoxylated amylopectins ranging in molecular weight from 10 to 1,000 kDa (average molecular weight, ~450 kDa).
When infused as a 6% solution, hetastarch approximates the activity of human albumin.
The larger molecular weights, however, increase TYLOSE H 20 P2's intravascular residence time as well as its plasma expansion effects relative to albumin.
Hetastarch is synthetically produced, so TYLOSE H 20 P2 is degraded more slowly and is less antigenic than other colloids.
Despite these advantages, hetastarch is quite expensive and also has no oxygen-carrying capacity.
TYLOSE H 20 P2 is a non-ionic, water-soluble polymer derived from cellulose.
TYLOSE H 20 P2 has various industrial, commercial, and pharmaceutical applications.
TYLOSE H 20 P2 is a gelling and thickening agent derived from cellulose.
TYLOSE H 20 P2 is widely used in cosmetics, cleaning solutions, and other household products.
TYLOSE H 20 P2 and methyl cellulose are frequently used with hydrophobic drugs in capsule formulations, to improve the drugs' dissolution in the gastrointestinal fluids.
This process is known as hydrophilization.
TYLOSE H 20 P2 is also used extensively in the oil and gas industry as a drilling mud additive under the name HEC as well in industrial applications, paint and coatings, ceramics, adhesives, emulsion polymerization, inks, construction, welding rods, pencils and joint fillers.
TYLOSE H 20 P2 can be one of the main ingredients in water-based personal lubricants.
TYLOSE H 20 P2 is also a key ingredient in the formation of large bubbles as it possesses the ability to dissolve in water but also provide structural strength to the soap bubble.
Among other similar chemicals, TYLOSE H 20 P2 is often used as slime (and gunge, in the UK).
TYLOSE H 20 P2 is a commonly used thickener in paint & coating formulations.
TYLOSE H 20 P2 thickeners are used in paint & coating formulations to increase the viscosity of the paint and to improve its flow and leveling properties.
TYLOSE H 20 P2 is a commonly used cellulose ether organic water-based ink thickener.
TYLOSE H 20 P2 is a water-soluble non-ionic compound.
TYLOSE H 20 P2 has good thickening ability for water and can be degraded by oxygen, acid and enzyme.
TYLOSE H 20 P2 can be cross-linked by Cu2+ under chemical conditions.
TYLOSE H 20 P2 is stable to heat, does not gel when heated, does not precipitate under acidic conditions, and has good film-forming properties.
TYLOSE H 20 P2's aqueous solution can be made into a transparent film, which can be formed by the interaction of alkaline cellulose and ethylene oxide.
TYLOSE H 20 P2 has Thickening, emulsification, adhesion, suspension, film formation, moisture retention and colloid protection properties.
The function of thickeners in water-based inks is to thicken them.
TYLOSE H 20 P2 Chemical Properties
Melting point: 288-290 °C (dec.)
Density: 0.75 g/mL at 25 °C(lit.)
Bulk density: 350kg/m3
Storage temp.: 2-8°C
Solubility H2O: ≤5 wt. % at 20 °C
Form: powder
Color: Light brown powder
Odor: Odorless
PH: pH(20g/l,25℃) : 5.0～8.0
Biological source: rabbit
Water Solubility: almost transparency
Merck: 14,4673
Stability: Stable. Incompatible with strong oxidizing agents, acid chlorides, acid anhydrides
InChI: InChI=1S/C29H52O21/c1-10-15(34)16(35)24(13(8-33)45-10)49-28-20(39)18(37)25(50-29-26(43-5-4-30)21(40)23(42-3)12(7-32)47-29)14(48-28)9-44-27-19(38)17(36)22(41-2)11(6-31)46-27/h10-40H,4-9H2,1-3H3
InChIKey: CWSZBVAUYPTXTG-UHFFFAOYSA-N
CAS DataBase Reference: 9004-62-0(CAS DataBase Reference)
EPA Substance Registry System: TYLOSE H 20 P2 (9004-62-0)
TYLOSE H 20 P2 is white to yellowish fibrous or powdery solid, non-toxic, tasteless and soluble in water.
Insoluble in common organic solvents.
Having properties such as thickening, suspending, adhesive, emulsifying, dispersing, water holding.
Different viscosity range of solution can be prepared.
Having exceptionally good salt solubility to electrolyte.
TYLOSE H 20 P2 is soluble in hot or cold water, and does not precipitate at high temperature or boiling, so it has a wide range of solubility and viscosity characteristics, as well as non-thermal gelling properties.
TYLOSE H 20 P2 is a non-ionic polymer material , can coexist with a wide range of other water-soluble polymers, surfactants, and salts, and is an excellent colloidal thickener for high-concentration dielectric solutions.
The water retention capacity of TYLOSE H 20 P2 is twice that of methyl cellulose, and it has better flow regulation; the dispersing ability of hydroxyethyl cellulose is comparable to that of methyl cellulose and TYLOSE H 20 P2.
The specific dispersing ability is the worst, but the protective colloid ability is the strongest.
Uses
1. TYLOSE H 20 P2 is used for cracking method to extract polymerized dispersing agents such as oil water base gel fracturing fluid, polystyrene and polyvinyl chloride.
Also for latex thickening agent in paint industry, hygristor in electronics industry, cement anti-coagulant agent and water retention agent in construction industry.
Glazing in ceramic industry and toothpaste binder.
Also widely used in many aspects such as printing and dyeing, textile, paper, pharmaceutical, health, food, cigarettes, pesticides and fire extinguishing agent.
2. Used as a water-based drilling fluids, and thickening agent and filtrate reducer of completion fluids, thickening agent has obvious effect on brine drilling fluid.
Also can be used for filtrate reducer of oil well cement.
Cross-linking with the polyvalent metal ions into a gel.
3. As surfactants, protective colloids, emulsion stabilizers in combination with emulsion such as vinyl chloride, vinyl acetate emulsion, and a tackifier, dispersant, dispersion stabilizer of emulsion.
Widely used in many aspects such as coatings, fibers, dyeing, paper, cosmetics, pharmaceuticals, pesticides.
There are many uses in oil exploitation and machinery industry.
4. As surfactants, latex thickening agent, protective colloid, oil exploitation fracturing fluid and polystyrene and polyvinyl chloride dispersing agents, etc.
TYLOSE H 20 P2 is a thickener, protective colloid, binder, stabilizer, and suspending agent.
TYLOSE H 20 P2 is obtained from wood pulp Copyright 2014 Cengage Learning.
May not be copied, scanned, or duplicated, in whole or in part.
Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s).
Editorial Review has deemed that any suppressed content does not materially affect the overall learning experience.
Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require TYLOSE H 20 P2 or chemical cotton by treatment with an alkali.
Pharmaceutical Applications
TYLOSE H 20 P2 is a nonionic, water-soluble polymer widely used in pharmaceutical formulations.
TYLOSE H 20 P2 is primarily used as a thickening agent in ophthalmic and topical formulations, although it is also used as a binder and film-coating agent for tablets.
TYLOSE H 20 P2 is present in lubricant preparations for dry eye, contact lens care, and dry mouth.
The concentration of TYLOSE H 20 P2 used in a formulation is dependent upon the solvent and the molecular weight of the grade.
TYLOSE H 20 P2 is also widely used in cosmetics.
Production methods
1. Alkali cellulose is a natural polymer, each of a fiber-based ring contains three hydroxyl groups, the most active hydroxyl reaction to give TYLOSE H 20 P2.
The raw material cotton linter or refined pulp meal were immersed in 30% liquid caustic soda, took out to squeeze after half an hour.
Squeezed water containing soda to 1: 2.8, pulverized.
Pulverized alkali cellulose was added into the reaction kettle, sealed, vacuumized, nitrogen charge, repeated to vacuumize and nitrogen charge to replace atmosphere in the reaction kettle.
Precooled the liquid ethylene oxide was pressed into, cooling water was pumped in jacket of reaction kettle, controlled at about 25 ℃ and reacted for 2 h, crude product of TYLOSE H 20 P2 was obtained.
The crude product was washed with alcohol, added acetic acid to adjust pH value to 4-6, added glyoxal to crosslink and aging.
Then washed with water, centrifugal dewatering, dryed, milled to obtain Hydroxyethyl cellulose.
Raw material consumption (kg/t) linter or low pulp meal 730-780 liquid caustic soda (30%) 2400 ethylene oxide 900 alcohol (95%) 4500 acetic acid 240 Glyoxal (40%) 100-300.
2. The raw material cotton linter or refined pulp meal were immersed in 30% liquid caustic soda, after half an hour took out to squeeze.
Squeezed water containing soda to 1: 2.8, pulverized alkali cellulose was added into the reaction kettle, sealed and vacuumized, nitrogen charge, used nitrogen to replace all atmosphere in the reaction kettle, Precooled the liquid ethylene oxide was pressed into.
In the cooling, controlled at 25 ℃ and reacted for 2 h, to give the crude product of crude Hydroxyethyl cellulose.
The crude product was washed with ethanol and acetic acid was added to adjust the pH value to 4-6. added glyoxal to crosslink and aging, washed with water fast, finally centrifugal dehydration, dried, milled, obtained low salt Hydroxyethyl cellulose.
Production Methods
A purified form of cellulose is reacted with sodium hydroxide to produce a swollen alkali cellulose, which is chemically more reactive than untreated cellulose.
The alkali cellulose is then reacted with ethylene oxide to produce a series of hydroxyethyl cellulose ethers.
The manner in which ethylene oxide is added to cellulose can be described by two terms, the degree of substitution (DS) and the molar substitution (MS).
The DS designates the average number of hydroxyl positions on the anhydroglucose unit that have been reacted with ethylene oxide.
Since each anhydroglucose unit of the cellulose molecule has three hydroxyl groups, the maximum value for DS is 3.
MS is defined as the average number of ethylene oxide molecules that have reacted with each anhydroglucose unit.
Once a hydroxyethyl group is attached to each unit, TYLOSE H 20 P2 can further react with additional groups in an end-to-end formation.
This reaction can continue and there is no theoretical limit for MS.
