The main performance ofhydroxyethyl celluloseis that it is soluble in cold and hot water and has no gelling properties. It has a wide range of substitution, solubility and viscosity. precipitation. Hydroxyethyl cellulose solution can form a transparent film and has non-ionic characteristics that do not interact with ions and has good compatibility.

①High temperature and good water solubility: Compared withmethylcellulose (MC)which is only soluble in cold water, hydroxyethyl cellulose is soluble in hot or cold water. Broad range of solubility and viscosity characteristics, and non-thermal gelation.

② Salt tolerance: Due to its non-ionic form, it can coexist with other water-soluble polymers, surfactants, and salts in a wide range. Therefore, hydroxyethyl cellulose has better salt tolerance compared with ionic carboxymethyl cellulose (CMC).

③Water retention, leveling, and film-forming properties: Its water-retaining capacity is twice that of methylcellulose. It has excellent flow regulation and excellent film-forming properties, filter loss reduction, miscibility, and protective colloid properties.

Uses of hydroxyethyl cellulose

Hydroxyethyl cellulose is a nonionic water-soluble cellulose ether product that is widely used in architectural coatings, petroleum, polymer polymerization, medicine, daily necessities, papermaking inks, fabrics, ceramics, construction, agriculture and other industries. It has the functions of thickening, bonding, emulsifying, dispersing, and stabilizing, and can retain water, form films, and provide protective colloid effects. Easily soluble in cold and hot water, solutions with a wide viscosity range are available. One of the faster cellulose ethers.

1

latex paint

Hydroxyethylcelluloseis the most commonly used thickener in latex coatings. In addition to thickening latex paint, it also has the functions of emulsifying, dispersing, stabilizing and retaining water. It is characterized by significant thickening effect, good color development, film-forming properties and storage stability. Hydroxyethylcellulose is a non-ionic cellulose derivative that can be used over a wide pH range. It has good compatibility with other materials in the composition such as pigments, additives, fillers and salts. Coatings thickened with hydroxyethyl cellulose have good rheology at various shear rates and are pseudoplastic. Construction methods such as brushing, roller coating, and spraying can be used. It has good construction properties, is not easy to drip, sag and splash, and has good leveling properties.

HEC

2

polymerization

Hydroxyethyl cellulose has dispersing, emulsifying, suspending and stabilizing effects in the polymerization or copolymerization components of synthetic resins and can be used as a protective colloid. It is characterized by strong dispersion ability, thin particle "film", fine particle size, uniform particle shape, loose shape, good fluidity, high product transparency, and easy processing. Since hydroxyethyl cellulose is soluble in cold and hot water and has no gelling temperature point, it is more suitable for various polymerization reactions.

Important physical properties to examine the quality of a dispersant are the surface (or interfacial) tension, interfacial strength and gelling temperature of its aqueous solution. These characteristics of hydroxyethyl cellulose are suitable for the polymerization or copolymerization of synthetic resins.

Hydroxyethyl cellulose has good compatibility with other water-soluble cellulose ethers and PVA. The composite system thus formed can achieve a comprehensive effect that complements each other's strengths. Composite resin products not only have good quality, but also reduce material loss.

3

oil drilling

In oil drilling and production, high-viscosity hydroxyethyl cellulose is mainly used as a thickening agent for completion fluids and finishing fluids. Low viscosity hydroxyethyl cellulose is used as a water loss reducing agent. In various muds required for drilling, completion, cementing, and fracturing operations, hydroxyethyl cellulose is used as a thickener to obtain good fluidity and stability of the mud. When drilling, it can improve the sand-carrying capacity of the mud and extend the service life of the drill bit. In low-solid completion fluids and cementing fluids, the excellent water loss reduction performance of hydroxyethyl cellulose can prevent a large amount of water from entering the oil layer from the mud, and can increase the productivity of the oil layer.

4

Daily chemicals

Hydroxyethylcellulose is an effective film-forming agent, adhesive, thickener, stabilizer and dispersant in shampoos, hair sprays, neutralizers, conditioners and cosmetics; in laundry detergents it is a foulant redeposition agent. Hydroxyethyl cellulose dissolves quickly at high temperatures, which can speed up the production process and improve production efficiency. The distinctive feature of the detergent is that it contains hydroxyethyl cellulose and its advantage is that it can improve the smoothness and mercerization of the fabric.

5

architecture

Hydroxyethylcellulose can be used in construction products such as concrete mixes, fresh mortars, gypsum plasters or other mortars to retain moisture during construction before setting and hardening. In addition to improving the water retention of building products, hydroxyethyl cellulose can extend the correction and opening time of stucco or mastic. Reduces crusting, slipping and sagging. This can improve construction performance, increase work efficiency, save time, and at the same time increase the volume expansion rate of mortar, thus saving raw materials.

6

agriculture

Hydroxyethylcellulose is used as a thickening agent for spray emulsions or suspensions in pesticide emulsion and suspension formulations. It can reduce the drift of pesticides and make them firmly adhere to the leaves of plants, thereby increasing the effect of foliar spraying. Hydroxyethyl cellulose can also be used as a film-forming agent in seed coatings and coating agents; as a binder and film-forming agent in tobacco leaf recycling.

7

Paper and ink

Hydroxyethyl cellulose can be used as a sizing agent on paper and board and as a thickener and suspending agent for water-based inks. In the papermaking process, the superior properties of hydroxyethyl cellulose include compatibility with most gums, resins and inorganic salts, low foaming, low oxygen consumption, and the ability to form a smooth surface film. The film has lower surface permeability and stronger gloss, which can also reduce costs. Paper sized with hydroxyethyl cellulose for high quality printing. In the production of water-based inks, water-based inks thickened with hydroxyethyl cellulose dry quickly, have good color diffusion, and do not cause adhesion.

8

fabric

Used as adhesive and sizing agent in fabric printing and dyeing slurries and latex paints; used as thickener for sizing materials on the back of carpets. Used as molding agent and binder in glass fiber; used as modifier and binder in leather pulp. Providing these coatings or adhesives with a wider viscosity range allows the coating to settle more evenly and quickly, and improves print clarity.

9

ceramics

High-strength adhesive for formulating ceramics.

10

toothpaste

It can be used as a thickening agent in toothpaste manufacturing.