Coating with mixture of crosslinking agent

Coating with mixture of crosslinking agent,Glycidyl ester PT910/912 system.

As early as 1992, a number of major producers would ever focus on the dangers of TGIC powder, and decided to give up in the near future the use of TGIC.

PT910/912 by Huntsman glycidyl ester of polybasic acid and dibasic acid mixture of glycidyl ester. PT910 actually is a mixture of 1:3 weight with the following structure.

The mixture compared with those of TGIC crosslinking agent to eliminate its ecology toxic, but still have certain contact toxicity and severe irritation. Due to reduced functionality, its reactivity is TGIC is low, need to join the promoter formula design.

Because PT910 functionality than TGIC degree is low, the functionality of the mechanical properties of crosslinking time and use more sensitive resin type. Can add promoter (or catalyst) or use a higher reactivity of polyester to compensate PT910 reactivity is lower.

Use the generic raw materials to synthesize a high glass transition temperature, good storage stability of polyester resin. Use PT910 as crosslinking agent of coatings for outdoor durability with TGlC powder.

Even with extraordinary measures PT910 powder coating system is also difficult to extinction, there seems to be only with the method of dry mixing, so that its application is limited by the further.

Compared with other types of powder coating polyester powder coating, with unique properties. In weather resistance, resistance to ultraviolet optical performance is better than epoxy resin. Because the polyester resin with polar group, so the powder rate higher than epoxy resin, baking process not easy yellowing, high gloss, good flowing property, thick paint membrane, shallow features such as color, thus has the very good adornment sex. More commonly used in refrigerators, washing machines, vacuum cleaners, instrument shell, bicycle, furniture and other fields.

Acrylic powder coating has two kinds of thermoplastic and thermosetting. The biggest advantages of thermosetting acrylic resin powder coating has excellent weather resistance and colour retention, resistance to polluting, metal adhesion, excellent coating appearance, suitable for decorative powder coating.




Chinese name: Diethyl toluene diamine(DETDA)

Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.

Density 1.022

Viscosity (20 ℃) ??mPa·ss290±10

Pour Point ℃-9

Boiling point of310°C

Flash Point°C161.1°C


Thermoplastic powder coatings is began in 1950, it melt under the spray temperature, cooling solidification film.

Just because of its simple processing and spraying methods, powder coating, cooling or heating melting on the surface and extraction solidified into a membrane, does not need complex curing device. Most use of common polymer materials are on the market, most conditions can meet the requirements of the using performance.

But there are also some deficiencies, such as high melting temperature, low level of coloring, poor adhesiveness and metal surface. In spite of this, the commonly used thermoplastic powder coatings are still show some special properties, including polyolefin powder coating has excellent solvent resistance.

Poly (vinylidene fluoride coating has outstanding weathering; Polyamide has excellent wear resistance; Polyvinyl chloride (PVC) has better price/performance ratio; Thermoplastic polyester powder coating has a beautiful appearance and high artistic quality, etc. These features make the thermoplastic powder coating occupies a large proportion in the coating market.

PVC powder is one of the cheapest polymer industrialized mass production. It has excellent solvent resistance, good to water and acid corrosion resistance, impact resistance, salt fog resistance, to prevent food contamination and electrostatic spraying with high dielectric strength. Mainly used for coating metal plates, steel furniture, chemical equipment, etc.

Polyethylene powder coating has excellent anti-corrosion properties, chemical resistance and excellent electrical insulation and resistance to ultraviolet radiation. The disadvantage is that mechanical strength is not high, poor adhesion to substrates. Can be used for chemical pool tank, impeller, pump, pipe wall, instrument shell, sheet metal, the refrigerator screen, auto parts, etc.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd 

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