Aliphatic multiple amine coating crosslinking agent

Aliphatic multiple amine coating crosslinking agent, such as ethylenediamine, divinyl three amine, triethylene tetramine, four ethylene amines, hexamethylenediamine, ethylene polyamine and so on.

The characteristics of fatty amine crosslinking agent

(1) high activity, ambient crosslinking.

(2) intense exothermic reaction, it is suitable for short period;

(3) usually takes after crosslinking. Crosslinking around 7 d at room temperature, then through 2 h / 80 ~ 100 ℃ after crosslinking, the performance is better;

(4) low thermal deformation temperature of crosslinked, general is 80 ~ 90 ℃;

(5) crosslinking material brittleness is larger;

(6) volatile and bigger toxicity.

Therefore, they are usually not directly used as crosslinking agent of paint, but by introducing new addition or condensation reaction using modified molecular structure.

Aliphatic refers to fat compounds composed of fat. Aliphatic compounds are chained hydrocarbons (open chain hydrocarbons) and cyclic hydrocarbons and their derivatives except aromatic compounds. Belong to aliphatic carbon ring compounds called alicyclic compounds.

Aliphatic refers to the structure is simple, the saturation of straight chain organic compounds, including organic polymer materials.

Multiple amine is not belong to a polyol, but it in polyurethane synthesis with polyol up effect similar to that of strictly speaking the polymer obtained cannot be named pu, shall be referred to as poly (amino formamide or polyurea, however, as a people will usually polyurethane class discussion.

The most commonly used multivariate amine has 3, 3 'two chlorine - 4, 4' : diphenyl methane diamine (MOCA) and propylene glycol double - (4, 4 'two amino) benzoic acid ester.

Other oligomer polyols, such as hydroxyl silicone resin is often used in special circumstances.

Definition: one or more of the ammonia molecules product of hydrogen atoms are replaced by alkyl called amines. According to the number of hydrogen atoms have been replaced in amine molecules, amine can be divided into primary amine, secondary amine and tertiary amine. For example: CH3CH2NH2 (primary amine) (CH3CH2) 2 nh (secondary amine) (CH3CH2) 3 n (tertiary amine)




Chinese name: Diethyl toluene diamine(DETDA)

Diethyltoluenediamine Uses:

The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.


Hydrogen in ammonia was replaced by the hydrocarbon compounds generated.

H of the amine can be seen as ammonia molecules are replaced by alkyl derivatives. Amines are widely exist in nature, have very important physiological activity and biological activity, such as many proteins, nucleic acids, hormones, antibiotics and alkaloid etc are amine complex derivatives.

According to the number of hydrogen is replaced, which in turn can be divided into primary amine, primary amine RNH2, secondary amine (secondary amine) R2NH,

Tertiary amine (tertiary amine) R3N, quaternary ammonium salt (quaternary ammonium salt) R4N + X -, such as methylamine CH3NH2, aniline C6H5NH2, ethylenediamine H2NCH2CH2NH2 and diisopropylamine (CH3) 2 ch 2 nh, triethanolamine (HOCH2CH2) 3 n, tetrabutyl ammonium bromide (CH3CH2CH2CH2) 4 n + Br -. Four hydroxyl ammonium hydroxide or ammonium salt of replacing, called quaternary amine alkali (quaternary ammonium hydroxide) or quaternary ammonium salt (quaternary ammonium salt). NH4 + ammonium R4NOH R4NX quaternary ammonium alkali quaternary ammonium salt.

According to amine molecules are connected to the nitrogen atom of the type of the hydroxyl and amine can be divided into aliphatic amine and aromatic amine. If amine molecules containing two or more amino (NH2), depending on the amino number of how many, can be divided into diamine, ternary amine.

Aliphatic compounds refers to hydrocarbon is straight chain structure, but can be saturated and unsaturated hydrocarbon.

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