Chemical properties of paint crosslinking agent

Chemical properties of paint crosslinking agent

The crosslinking agent is soluble in aromatic hydrocarbons, halogenated hydrocarbon, naphthene, acetone, polyol, etc., which are soluble in alkane and insoluble in water.

The chemical properties of crosslinking agent: stable under normal temperature, can be stored at room temperature for a long time. The functional group of TAIC is three allyl propyl, which has the general commonality of fatty olefins, such as various addition reactions, homopolymerization and copolymerization, Prins reaction, etc. Under the peroxide caused, TAIC than other allyl polymerization, occurred more often in air heated to above 140 ℃ and the reaction, become transparent, qualitative hard homopolymer.

Are the crosslinking agents toxic? The answer is: not all are toxic, but most are toxic.

Crosslinking agents can bridge the lines between linear molecules and allow multiple linear molecules to bond to each other. A substance that promotes or regulates the formation of a covalent bond or ionic bond between the polymer chains.

Crosslinking agents are called in different industries. For example, the rubber industry habit is called vulcanization. The plastics industry is called "curing agent", "curing agent" and "hardener"; It is called "curing agent" and "hardener" in the adhesive or coating industry. The names are different, but they reflect the same chemical nature.

It is often a substance containing many functional groups, such as organic diacid, polyol, etc. Or molecules contain multiple unsaturated double bonds, such as diethylbenzene and diisocyanate. It can be made with monomer, to be condensed (or polymerized) to a certain degree, to make the product into an insoluble crosslinked polymer; Also can keep a certain number of functional groups in linear molecules (or double bond) and then add certain substances to crosslinking, such as the curing of phenolic resin and rubber vulcanization, etc.




Chinese name: Diethyl toluene diamine(DETDA)

Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).


It is often a substance containing many functional groups, such as organic diacid, polyol, etc. Or molecules containing multiple unsaturated double bonds, such as diethylbenzene and diisocyanate, N, n-methyl-diacrylamide (MBA), etc. It can be made with monomer to be condensed (or polymerized) to a certain degree of cross-linking, making the product into an insoluble cross-linked polymer; Also can keep a certain number of functional groups in linear molecules (or double bond) and then add certain substances to crosslinking, such as the curing of phenolic resin and rubber vulcanization, etc.

Crosslinking agent on the one hand, can have the effect of cationic modified agent, on the one hand, it can react with fiber, can react with hydrolyzed dye again, thus improve the dyeing the dark and the color fastness, and also improve the utilization rate of dye.

In addition, it can react with an nh2-0h on certain active dyes, and can also react with cellulose fiber. Highly diversified crosslinking system formation, dye, fiber more closely joined together tightly, prevent the dye from the fiber, and ultimately achieve the purpose of improving the wet rubbing fastness. The crosslinking agent FKJ can obviously improve the dyeing depth and wet rubbing fastness of viscose/flax-blended fabric.

The reactive dyes dyed fabric was treated with FKJ, the L * value decreased from 19.36 to 17.62 ~ 18.95, and the wet friction fastness increased 0.5 ~ 1.0. Crosslinking agent FKJ is best used in flax-blended fabric dyeing, which is the best colour for dyeing. Pad dyeing liquid - drying - steaming (102 ℃ by 2 ~ 3 min) - rolling processing liquid and drying - steaming to wash in cold water, hot water washing to soaping, cold water washing is the most ideal treatment technology. From the dyeing process of 1, 2, 3, the dyeing technique of no.3 dyeing is the best in black and wet. Comparison of three types of cationic modification agents, 2, 3 and FKJ, can be obtained by using the FKJ, which is better than modifier 3 and modifier 2.

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