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From June 19th to 20th, the 37th International Fine and Specialty Chemicals Exhibition was held at the Düsseldorf Exhibition Center in Germany, attracting representatives from the global chemical and materials industries. As a company focusing on chemicals and materials, East Chemicals showcased its unique solutions at the exhibition with high-performance chemicals and advanced materials as its main line.

Hydroxypropyl methyl cellulose is a synthetic polymer made from natural cellulose through chemical modification. Cellulose ether is a derivative of natural cellulose. The production of cellulose ether is different from synthetic polymers. Its most basic material is cellulose, a natural polymer compound. Due to the special structure of natural cellulose, cellulose itself has no ability to react with etherifying agents. However, after treatment with the swelling agent, the strong hydrogen bonds between and within the molecular chains are destroyed, and the active release of the hydroxyl group becomes alkali cellulose with the ability to react. After the reaction of the etherifying agent, the -OH group is converted into the -OR group. Cellulose ether is obtained.

Polycarboxylate water-reducing agents has the properties of high water reduction and high slump retention, and can impart high strength and durability to concrete. It has shown outstanding advantages in high-quality projects such as national large-scale water conservancy, nuclear power, and bridges. Compared with naphthalene-based water-reducing agents, polycarboxylate water-reducing agents are sensitive to the mud content of sand and gravel aggregates [1-3] and are expensive. Therefore, in laboratories and engineering construction, attempts have been made to mix polycarboxylate water-reducing agents and naphthalene-based water-reducing agents to take advantage of their respective advantages.

CPhI North America 2024 will be held in Philadelphia, USA from May 07-09. As the world's top professional exhibition for the pharmaceutical industry, CPHI North America is the only pharmaceutical industry event in the United States that covers the entire industry chain including drug research and development, production, and packaging.

On April 29, the three-day 16th Chongqing International Battery Technology Forum/Exhibition (CIBF2024) concluded successfully at the Chongqing International Expo Center. During this period, East Chemical shined at the venue with its hard-core products, providing one-stop solutions for chemical raw material manufacturers.

1. Cement mortar: improve the dispersion of cement sand, greatly improve the plasticity and water retention of mortar, have an effect on preventing cracks and enhance the strength of cement.

HPMC is a non-ionic cellulose ether polymer, which has different chemical properties according to the degree of substitution of the substituent groups and the degree of modification. It is a non-ionic, odorless, odorless white fiber Pure ether powder.

Gypsum mortar is a building material with gypsum as the main component. Gypsum accounts for 70% to 80% of the total weight of the mortar. Other components include lime, silicate, etc. The following is a summary of the effects of several mortar additives on gypsum mortar.

VAE Re-dispersible Polymer Powder is mainly used in dry; Interior and exterior wall putty powder, tile adhesive, tile jointing agent, dry powder interface agent, exterior wall external insulation mortar, self leveling mortar repair mortar, decorative mortar, waterproof mortar external insulation dry mixed mortar.

Due to its excellent properties, polycarboxylate superplasticizers are widely used in many fields, including:

(1) Whiteness: Although whiteness cannot determine whether HPMC is easy to use, and if whitening agent is added in the production process, its quality will be affected. However, most good products have good whiteness.

The VAE Re-dispersible Polymer Powder will disperse in water to form a stable lotion, but the redispersibility of the emulsion powder only occurs once, and the hardened mortar and other materials will not disperse again in water.