Two hydrazide coating crosslinking agent

Two hydrazide coating crosslinking agent,Belong to the amine crosslinking agent.

In addition to the individual as a crosslinking agent, also can be used as dicyandiamide crosslinking promoter. The most common varieties of sebacate hydrazide. Melting point ? ? 185-185. The amount of epoxy resin powder coating of about 7%. Crosslinking conditions generally is 180 ? / 15 min or 180 ? / 20 min.

Each second hydrazide has six lively H atoms in the molecule (dicyandiamide has four), reaction junction. Advantages: relative dicyandiamide coating physical and mechanical performance is good, especially with long carbon chain structure and good flexibility; And epoxy resin compatibility good, do not need to add crosslinking accelerator; Yellowing resistance, suitable for white or light color powder coating.

Distilled water and 30% resistant - H2SO4 solution is more than 30 days, and as a comparison sample dicyandiamide 25 days is black. Disadvantages: high cost, have certain toxicity.

Sebacate hydrazine is a kind of chemicals, molecular formula is C10H22N4O2.

White crystalline powder, insoluble water, slightly soluble in acetone, acetic anhydride and acylation reaction can occur or chloride
Descriptors: appearance white crystalline powder, more than 185 ℃, melting point insoluble water, slightly soluble in acetone, with acetic anhydride or chloride can acylation reaction, is an important amide hydrazine compounds.

Sebacate hydrazide (SPH) is a kind of high melting point compound powder, made by organic acid and hydrazine reaction. It can be used as coupling agent of epoxy resin (EP) latent intercourse. EP/SPH for viscous material system of powder coating film has very good flexibility, water resistance, weather resistance, corrosion resistance, insulation and decoration.

Due to the system comprehensive performance is superior; In the decorative powder, insulation powder, smoldering powder, electrical powder, heavy-duty powder used in the well, in today's domestic and foreign, especially the manufacturing quality and high temperature fast heavy-duty powder and oil pipeline, spaceflight, aviation fuel, in areas such as indispensable latent sexual coupling agent. And increase strength in epoxy resin powder, glass fiber reinforced plastic products, such as side effect is very ideal. The products are highly trusted by customers at home and abroad.




Chinese name: Diethyl toluene diamine(DETDA)

Diethyltoluenediamine Raw material ：

TDA industrial, Sichuan production

Ethylene (Et) polymer grade, Shanghai production

TEA industrial imports

A reagent grade additives


Used as type latent epoxy resin adhesives crosslinking agent, the dosage of reference 7 ~ 8, applicable period > 3 months. Crosslinking conditions of 150 ℃ / 20 ~ 30 min. Lower than the dicyandiamide crosslinking temperature, short crosslinking time, good water resistance, high bonding strength, 30 min 150 ℃ / crosslinking of shear strength of 24.5 MPa. Crosslinked heat deformation temperature of 160 ~ 165 ℃. Also used as a modified rapid crosslinking poly vinyl acetate emulsion crosslinking agent, increase initial bonding strength and ultimate strength and water resistance.

Adipic acid hydrazide aka and hydrazide, single product is white crystal, soluble in water, poisoning. Mainly used for crosslinking agent of epoxy powder coating and coating additives, metal attenuated agent and other polymer additives and water treatment agent. With bifunctional crosslinking reagent, dedicated to aldehyde, generated a relatively stable hydrazone links. With sodium hyaluronate as protein drug carrier after crosslinking. And diacetone acrylamide in water emulsion and water soluble polymer crosslinked crosslinking role. Can also be used for indoor formaldehyde adsorbent materials and intermediates.

Mainly used for crosslinking agent of epoxy powder coating and coating additives, metal attenuated agent and other polymer additives and water treatment agent.

Adipic acid hydrazide double functional group compounds, with sodium hyaluronate as protein drug carrier after crosslinking. And diacetone acrylamide in water emulsion and water soluble polymer crosslinked after crosslinking role, such as coating, adhesive, fiber and plastic processing, hair gel, etc., also can be used as a crosslinking agent and coating epoxy powder coating additives, metal attenuated agent and other polymer additives and water treatment agent, indoor formaldehyde adsorbent materials and intermediates.

With bifunctional crosslinking reagent, dedicated to aldehyde, generated a relatively stable hydrazone links. Especially for connecting glycoprotein, such as antibodies.

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Diethyl toluene diamine(DETDA)  http://www.yaruichem.com