Coating with glycidyl ester crosslinking agent PT910/912 system

Coating with glycidyl ester crosslinking agent 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. A mixture of PT910 is actually a 1:3 weight.

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.

Polycondensation reaction synthesis of polyvinyl chloride resin coating components (prepolymer) acid and polybasic acid acid can be divided into the unit. Unit acid contains only a carboxyl group (rosin acid and benzoic acid), polybasic acid containing two or more carboxyl (such as acid, sebacic acid), therefore calls polybasic acid.

Polybasic acid usually can be ionized in aqueous solution and produce three or more of the hydroxonium ion H3O + acids. Such as H3PO4 phosphate. Mainly refers to in the organic chemistry with three or more carboxyl - COOH carboxylic acid, such as both benzene tetracarboxylic C6H2 (-cooh) group 4, etc.




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


According to the acid-base proton theory, according to the acid can be given the number of protons (H +), the acid is divided into one yuan acid (such as HCl, NH4 +), dibasic acid (e.g., H2C2O4, - H2SO4) and ternary acid [such as H3PO4, Fe (H2O) 63 +], etc. Not a dollar acid are collectively referred to as polybasic acid. Multiple ionization of weak acid in water was conducted step by step, such as H3PO4 three ionization, every step ionization has corresponding ionization equilibrium constant. Generally speaking, the first step of multiple weak acid ionization tend to be far greater than the second and the third step, when considering multiple weak acid aqueous solution acidity, generally the first step in ionization equilibrium calculation.

Glyceride usually refers to the glycerol and fatty acids (including saturated fatty acids and unsaturated fatty acid) by the esterification of the ester generated by class.

According to the number of molecules used fatty acid molecules can be divided into a (fat) acid glycerol ester C3H5 (OH) 2 (OCOR), glycerin (fat) acid ester C3H5 (OCOR) (OH) 2 and triglyceride (fat) acid ester C3H5 (OCOR). 3. High carbon number of fatty acids (commonly known as senior fatty acid) glyceride is the main element of the natural oils. Is one of the largest triglyceride (triglyceride), such as three oleic acid glycerol ester (oil), glycerin three palmitic acid ester (soft fat fine) and glycerol stearic acid ester (stearin).

Glyceride is neutral substance. Does not dissolve in water. Soluble in organic solvents. Hydrolysis is going to happen. Such as grease with caustic soda hydrolysis (saponification) generate a high carbon number of fatty acid sodium salt (sodium soap, namely plain soap) and glycerin.

Glyceride is neutral fat, is one of the composition of blood fats, the role of the storage and delivery, most of the particles exist in celiac and very low density lipoprotein. Triglycerides and cholesterol, are causing atherosclerosis risk factors, the modern people more carefully to prevent higher standards of living.

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